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Open Access Article
1 - بررسی ویژگی های فیزیکی و مکانیکی نانوچندسازه حاصل از اختلاط آرد پوسته برنج لنجان اصفهان، پلیمر زیستی نشاسته ذرت و نانورس
مسعود رحمتی* آرش فرج پور رودسری -
Open Access Article
2 - Investigation of the effect of compatibilization of oxidized polypropylene in molten phase on the mechanical, physical, and morphological properties of reed plant flour-high density polyethylene composite
Mohammad Shamsian Mohammad Dahmardeh Ghalehno Fatemeh Dehdast Seyedeh Rahil ChalakehThis study aimed to investigate the possibility of making reed plant flour-high density polyethylene composite usingoxidized poly-propylene as a compatibilizer. For this purpose, reed plant flour, high density polyethylene, and oxidizedpoly-propylene compatibilizer in t MoreThis study aimed to investigate the possibility of making reed plant flour-high density polyethylene composite usingoxidized poly-propylene as a compatibilizer. For this purpose, reed plant flour, high density polyethylene, and oxidizedpoly-propylene compatibilizer in the specified value were mixed into the internal mixer for 6 min and after that, theresulting amorphous materials turned to the granules using a laboratory mill. Finally, the granules turned to reed-plasticplates using a hot press. Mechanical tests such as bending and tensile resistances and their modulus and physicalproperties such as water absorption and thickness swelling in 2 and 24 h were measured. A fourier transform infraredspectroscopy machine was used to check the modification of oxidized poly-propylene and the morphology of thecomposites was studied by electron microscopy images. The results demonstrated that with increasing thecompatibilizer, the mechanical properties were linearly increased, while the water absorption and thickness swellingwere decreased. Electron microscopy images showed that improved adhesion at the interface between the reed plantflour and polymer fibers. The Fourier-transform infrared spectroscopy also showed that due to the oxidation ofpolypropylene, hydrophilic regions are formed in it. Manuscript profile -
Open Access Article
3 - تاثیر اصلاح شیمیایی آرد چوب بر دوام طبیعی، خواص حرارتی و ریخت‌شناسی چندسازه چوب پلاستیک در برابر قارچ رنگین‌کمان (Trametes Versicolor)
سعید اسمعیلی‌مقدم افسانه شهرکی فاطمه دهدست ملیحه آصفی -
Open Access Article
4 - بررسی خصوصیات فیزیکی و مقاومت به ضربه چندسازه آردچوب-ضایعات ماهی- پلی‌اتیلن سنگین
علی کاظمی تبریزی مصطفی سفیدروح میثم مهدی نیا -
Open Access Article
5 - اثر درصد ذرات لیگنوسلولزی نخل و کلرید کلسیم بر ویژگی های مقاومت خمشی، مدول الاستیسیته و چسبندگی داخلی پانلهای چندسازه چوب سیمان
مرضیه کریمی سید خلیل حسینی هاشمی ابوالفضل کارگرفرد غزاله ارشدی نیا -
Open Access Article
6 - بررسی ویژگی‌های فیزیکی و مکانیکی نانوچندسازه حاصل از آرد پوست پسته، پلی‌اتیلن سنگین، نانو رس و انیدرید مالئیک پیوندشده با پلی‌اتیلن
رسول شباحتی آرش فرج‎پور رودسری اصغر تابعی -
Open Access Article
7 - Evaluation of antibacterial activity of magnesium oxide nanoparticles in ZSM-12 zeolite obtained from rice husk
Azita Albouyeh afshin pourahmad Hassan KefayatiBackground and Objective: Rice husk is an agricultural by-product material comprising about 22% of the weight of rice. Even though some of this husk is converted into end products such as feedstock and adsorbent most is burnt openly, causing environmental and health pro MoreBackground and Objective: Rice husk is an agricultural by-product material comprising about 22% of the weight of rice. Even though some of this husk is converted into end products such as feedstock and adsorbent most is burnt openly, causing environmental and health problems especially in poor and developing countries. Therefore, it is very important to find pathways to fully utilize the rice husk. Material and Methodology: In this study, the fabrication and characterization of ZSM-12 zeolite using rice husk ash as an alternative cheap silica source, and synthesis and characterization of magnesium oxide nanoparticles in ZSM-12 matrix by solid state reaction and ion exchange methods is reported. Disk diffusion method and MIC were used to evaluate the antimicrobial activity of nanoparticles on gram-negative (Escherichia coli) and gram-positive (Staphylococcus aureus) strains of bacteria compared to standard commercial antibiotic disks. Findings: Synthesized samples were evaluated using X-ray diffraction, scanning electron microscopy, energy dispersive X-Ray spectroscopy and transmission electron microscopy. XRD results revealed diffraction peaks for each of the two compounds in the MgO/ZSM-12 nanocomposite. Discussion and Conclusion: Transmission electron microscopy image of nanocomposite indicated that nanoparticles size of MgO is ~ 35 nm. Nanocomposite exhibited antibacterial activity with minimal inhibitory concentration of 96 µg/mL against E. coli and S. aureus. Manuscript profile -
Open Access Article
8 - The effect of fish powder using on wood plastic composite biodegradability
ali kazemiAs the use of wood plastic composites (WPC) in various industries has increased significantly and due to the high importance of environmental issues in industry and research and the fact that products made of petroleum polymers have too little biodegradability, it is im MoreAs the use of wood plastic composites (WPC) in various industries has increased significantly and due to the high importance of environmental issues in industry and research and the fact that products made of petroleum polymers have too little biodegradability, it is important to conduct research to improve and solve this environmental problem. Due to the high amount of volatile nitrogen, low quality fish powder is not used in the industry, and as a result, it can be use as cheap and biodegradable filler in wood plastic. In this research, the effect of fish powder amount, substrate type, and coupling agent (MAPE) amount on the physical characteristics of wood-plastic composite was investigated. The results showed that by increasing fish powder amount and decreasing coupling agent amount, the highest amount of degradability is obtained. Manuscript profile -
Open Access Article
9 - تشخیص سریع و اندازه‌گیری حساس لوودوپا در نمونه‌های دارویی و زیستی با استفاده از استخراج فاز جامد ترکیب شده با طیف‌نورسنج تحرک یونی
معصومه محمدنژاد نرگس انصاری -
Open Access Article
10 - Synthesis of Chitosan-Folic acid/ Magnetite Nanocomposite from Shrimp Shells and its Antibacterial Activities on Escherichia coli and Staphylococcus aureus
Juliet Ordoukhanian Shahla Mozaffari Narges Ajami Shima NahalIn this study, by preparing chitosan from shrimp shell which is low- cost and available, the degradable and biocompatible nanocomposite from folic acid functionalized chitosan was obtained by the addition of magnetite nanoparticles. First, by adding folic acid in an aci MoreIn this study, by preparing chitosan from shrimp shell which is low- cost and available, the degradable and biocompatible nanocomposite from folic acid functionalized chitosan was obtained by the addition of magnetite nanoparticles. First, by adding folic acid in an acidic medium to the prepared chitosan, the chitosan-folic acid derivative was obtained via ultrasonic dispersion. Then, by adding it to the solution of magnetite nanoparticles prepared by co-precipitation method from Fe (II) and Fe (III) salts by addition of ammonia solution, chitosan- folic acid/ magnetite nanocomposite was prepared which has special antibacterial properties on some pathogenic microorganisms. The properties of the prepared nanocomposite were investigated by Fourier transform Infrared (FTIR), scanning electron microscopy (SEM), and X-ray diffraction (XRD) analysis. The results of antibacterial tests showed that both the derivatives prepared from chitosan at the concentration of 200 μg/ml could inhibit the growth of gram-negative Escherichia coli and gram-positive Staphylococcus aureus Manuscript profile -
Open Access Article
11 - Effect of quartz filler with fluoride-containing barium aluminosilicate on the mechanical properties of light-cured dental composites based on Bis-GMA/UDMA/TEGDMA
babak akbari Sahar Vahedi Maryam Jamshidi Farhood Najafi: In this project, a dental composite has been prepared using Bis-GMA, UDMA, and TEGDMA resins along with quartz and barium aluminosilicate fillers containing fluoride. After the fabrication stage, FTIR tests were performed to study the surface modification of fillers, More: In this project, a dental composite has been prepared using Bis-GMA, UDMA, and TEGDMA resins along with quartz and barium aluminosilicate fillers containing fluoride. After the fabrication stage, FTIR tests were performed to study the surface modification of fillers, UTM to determine the flexural strength and stiffness test. Then, SEM images were obtained from the fracture surfaces of the bending test. The results of the UTM test were about 23% higher than the standard level of ISO4049 (93MPa) and the hardness test result was 84.4 HV, which is in the acceptable range for dental composites. FTIR peaks related to quartz and barium silicate glass systems showed the success of the silanization process in these two systems. In general, it seems that the composition prepared in this study can meet the requirements of a dental composite. However, further studies need to be carried out. Manuscript profile -
Open Access Article
12 - Simultaneous determination of dopamine and tyrosine by electrochemical method using glassy carbon electrode modified with the prepared ZIF-8@CO-TA nanocomposite
Naz-Maryam Setoodeh Shohreh Jahani Maryam Kazemipour Mohammad Mehdi ForoughiConventional methods for simultaneous measurement of biological, medical and pharmaceutical samples are time consuming, costly and complex, and require sample preparation. Therefore, the methods that despite being cheap and simple, have very high selectivity and sensiti MoreConventional methods for simultaneous measurement of biological, medical and pharmaceutical samples are time consuming, costly and complex, and require sample preparation. Therefore, the methods that despite being cheap and simple, have very high selectivity and sensitivity, are of interest. In this study, a nanocomposite, abbreviated as ZIF-8@CO-TA, was synthesized using the zeolite imidazolate framework, cobalt, and tannic acid. The prepared nanocomposite was characterized by a scanning electron microscope (SEM), a transmission electron microscope (TEM), and Fourier transform infrared (FTIR) spectroscopy. The glassy carbon electrode modified with this nanocomposite was applied for simultaneous measurement of dopamine and tyrosine, in pH=6, by using electrochemical techniques of differential pulse voltammetry, cyclic voltammetry, and chronoamperometry. In the range of 10.0-140.0 μM using differential pulse voltammetry, the detection limits of 3.2 and 6.38 μM were obtained for dopamine and tyrosine, respectively. The glassy carbon electrode modified with this nanocomposite showed good long-term stability. Manuscript profile -
Open Access Article
13 - Investigation of MoO3/Clin and Mn2O3-MoO3/Clin nanocomposites’ performance for thiophene removing process by adsorption/catalytic oxidation method
Masoumeh Khatamain Zahra Chenari Azin Yavari Baharak Divband Ziba Karimi Sasn Mohammadzadeh Baharak Mardangahi Sara Fazli-ShokouhiIn this research, the clinoptilolite (clin) ore from Mianeh in East Azarbaijan was used for the preparation of nanocomposites. MoO3 and Mn2O3-MoO3 oxides were loaded on acid-washed zeolites by impregnation method and MoO3/Clin and Mn2O3-MoO3/Clin composites with 18 wt. MoreIn this research, the clinoptilolite (clin) ore from Mianeh in East Azarbaijan was used for the preparation of nanocomposites. MoO3 and Mn2O3-MoO3 oxides were loaded on acid-washed zeolites by impregnation method and MoO3/Clin and Mn2O3-MoO3/Clin composites with 18 wt. % of oxides were prepared. The prepared composites were characterized by XRD, FT-IR, FESEM, and EDX techniques. The presence of peaks related to the MoO3 and Mn2O3 oxides in the XRD pattern of composites and the existence of approximately spherical nanoparticles with sizes lower than 100 nm in their SEM images confirmed the preparation of composites. The catalytic activity of nanocomposites for removing thiophene was studied by the adsorption/oxidation method and the effect of solvent type, temperature, and oxidant on removal efficiency of thiophene was investigated. The results showed that Mn2O3-MoO3/Clin composite has better catalytic activity than MoO3/Clin in removing thiophene. Moreover, the increasing of temperature and applying NaClO as an oxidant improved the thiophene's degradation efficiency by this composite. The highest removal efficiency was obtained at 298 K in water-ethanol solvent by using oxidant for Mn2O3-MoO3/Clin composite which was about 66%. By changing the solvent from a polar solution (water and ethanol) to a nonpolar solvent (n-hexane) the removal efficiency decreased. Manuscript profile -
Open Access Article
14 - Magnesium ferrite/reduced graphene oxide nanocomposite and its photocatalytic application in pollutant degradation and fuel production
majid Ghanimati Mohsen Lashgari Vassilios BinasPreparation of effective nanocomposite energy materials using Earth-abundant elements and eco-friendly chemicals for application in photocatalytic degradation of hazardous materials and production of fuel is a sustainable strategy for pollutant removal and supplying hyd MorePreparation of effective nanocomposite energy materials using Earth-abundant elements and eco-friendly chemicals for application in photocatalytic degradation of hazardous materials and production of fuel is a sustainable strategy for pollutant removal and supplying hydrogen, the green/carbon-free fuel in modern world. In this article, the nanostructured magnesium ferrite (MgFe2O4) semiconductor was synthesized and employed for the production of hydrogen gas through the light-induced splitting of alkaline H2S solution and photocatalytic degradation of methyl orange–a refractory azo dye. Investigations revealed that the synthesized photocatalyst has the ability to destroy pollutant and produce hydrogen. To improve the photocatalyst activity, graphene oxide (GO) precursor was prepared through the modified Hummers method and utilized directly in the hydrothermal synthesis of MgFe2O4/rGO nanocomposite. The evidence showed that the presence of rGO (reduced graphene oxide) and the formation of nanocomposite can significantly increase the decolorization ability and hydrogen release in terms of enlarging the photocatalyst surface area, slowing down the electron-hole recombination, and enhancing photon absorption. The degradation efficiency was 84% [measured after one hour operation of the photoreactor] and the rate of hydrogen release was 5567 µmol/h [per gram of photocatalyst], indicated the good performance of the nanocomposite photocatalyst in pollutant removal and fuel production Manuscript profile -
Open Access Article
15 - Low temperature ethanol vapor sensor based on H-CeO2/Fe nanocomposite:Ultra-sensitive, selective and repeatable performance
elnaz yousefian susan samadi Khadijeh Kalateh mohammad yousefi Ali ParsaIn this paper, hollow-CeO2/Fe (H-CeO2/Fe) nanocomposite was synthesized by hydrothermal assisted sol-gel method and the sensitivity of this gas sensor to ethanol, 2-propanol, and methanol was investigated. The structural properties and morphology of H-CeO2/Fe nanocompos MoreIn this paper, hollow-CeO2/Fe (H-CeO2/Fe) nanocomposite was synthesized by hydrothermal assisted sol-gel method and the sensitivity of this gas sensor to ethanol, 2-propanol, and methanol was investigated. The structural properties and morphology of H-CeO2/Fe nanocomposite were investigated by X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), BET, and transmission electron microscopy (TEM). The synthesized sensor sensitivity to ethanol was higher than the other volatile organic compounds at 29 °C and relative humidity (RH) of 45%. The sensitivity, reproducibility, response, and recovery times as performance characteristics and relative standard deviation (RSD), limit of detection (LOD), and determination coefficient were also evaluated. The results showed that the H-CeO2/Fe sensor could be used to quantitative and qualitative analysis of ethanol. The response mechanism of the sensor to ethanol was also discussed. Manuscript profile -
Open Access Article
16 - The Study of the effect of nanographene and nanographene oxide on physical and mechanical properties of natural rubber nanocomposites
Bagher Mohammadi Fahimeh NoriIn this work, natural rubber (latex) nanocomposites were prepared by adding reduced graphene oxide and graphene oxide nanoparticles to the pristine latex. Then some physical and mechanical properties of these nanocomposites were investigated. These properties included t MoreIn this work, natural rubber (latex) nanocomposites were prepared by adding reduced graphene oxide and graphene oxide nanoparticles to the pristine latex. Then some physical and mechanical properties of these nanocomposites were investigated. These properties included tensile strength at peak point, tensile strength at breaking point, tensile percentage, surface cohesion, and rheometry. The experimental results of these nanocomposites were compared with those of natural rubber. The results showed that nanocomposites containing graphene oxide were much more desirable in terms of physical and mechanical properties than nanocomposites containing reduced graphene oxide. Both of these nanocomposites had better results in terms of physical and mechanical properties than pristine natural rubber. The FESEM images showed that the surface of samples which containing nanographene, had better uniformity and adhesion than those of the original latex. The surface adhesion of nanocomposites, containing nanographene oxide was much better and more desirable comparing to the others. Manuscript profile -
Open Access Article
17 - Preparation and evaluation of polyvinyl alcohol nanocomposite containing zinc oxide nanoparticles and montmorillonite
Negar Motakef Kazemi elaheh mollaakbari Raheleh HalabianThe purpose of this research is to investigate the mechanical, antibacterial, and cytotoxic properties of biocompatible polyvinyl alcohol (PVOH) nanocomposite modified with zinc oxide (ZnO) nanoparticles and montmorillonite (MMT) to prepare a film for use in food packag MoreThe purpose of this research is to investigate the mechanical, antibacterial, and cytotoxic properties of biocompatible polyvinyl alcohol (PVOH) nanocomposite modified with zinc oxide (ZnO) nanoparticles and montmorillonite (MMT) to prepare a film for use in food packaging. Zinc oxide nanoparticles were synthesized by hydrothermal method via chemical reduction process. This method was performed using zinc acetate salt as a metal precursor, soda as reductant and water as a solvent for 1 hour at a temperature of 80°C. The samples were characterized by X-ray diffraction (XRD) to evaluate the crystal structure, and field emission scanning electron microscope (FESEM) to check the size of the particles and morphology of the samples. The mechanical properties of the samples were investigated. The obtained results showed that the moisture content in the optimal film was reduced to 1.01 x 10-8 g/m3 and the tensile strength and Young's modulus were increased to 0.492 MPa and 24.1 Pa, respectively. The antibacterial activity against Escherichia coli was evaluated by the agar well method and the final nanocomposite showed the highest antibacterial property with the non-growth halo of 0.64 mm. Cytotoxicity of the samples was recorded using the MTT assay method on the HEK293 cell line after 1, 3, and 5 days. The highest percentage of normal cell viability was observed at the concentration of 0.25 mg/ml of the sample and the final nanocomposite showed the highest cell viability. Based on the obtained results, nanocomposite containing zinc oxide nanoparticles and montmorillonite can have a good potential for use in food packaging industries. Manuscript profile -
Open Access Article
18 - Synthesis, characterization, and evaluation of antibacterial activities of novel nanocomposite films chitosan/phosphorus triamide/Fe3O4 NPs
samad yarahmadi niloufar dorosti maryam pas abdul naser mohammadiIn this work, new nano-composite of chitosan/phosphorus triamide with Fe3O4 NPs (1, 2.5, 5%) was prepared. The Fe3O4 NPs were synthesized at size of about 18-24 nm with a spherical morphology through co-precipitation method by using FeCl3.9H2O and FeCl2.4H2O salts. The MoreIn this work, new nano-composite of chitosan/phosphorus triamide with Fe3O4 NPs (1, 2.5, 5%) was prepared. The Fe3O4 NPs were synthesized at size of about 18-24 nm with a spherical morphology through co-precipitation method by using FeCl3.9H2O and FeCl2.4H2O salts. The phosphorus triamide derivative was synthesized from the reaction of tert-butylamine with phosphoryl chloride. X-ray diffraction (XRD) patterns and scanning electron microscope (SEM) images of chitosan, phosphorus triamide, Fe3O4 NPs, chitosan/phosphorus triamide, and chitosan/phosphorus triamide/1-5% Fe3O4 NPs were investigated and the results confirmed the formation of the desired films. Further, morphology and the size of nanoparticles were investigated by changing ultrasonic frequency (37 and 80 Hz) and power (30, 60, and 100 W). The in vitro antibacterial activities were evaluated against two gram-positive Staphylococcus aureus (S. aureus), Bacillus cereus (B. cereus) and one gram-negative Pseudomonas aeruginosa (P. aeruginosa) bacteria. Nanocomposite containing higher percent of Fe3O4 NPs showed more antibacterial activities. Results also displayed greater antibacterial effects against B. cereus bacterium. Manuscript profile -
Open Access Article
19 - Synthesis and characterization of copper oxide/graphene oxide naanocomposite functionalized with nanoplatinum for efficient adsorption of cefixime antibiotic from aqueous solutions
Payam Arabkhani Arash AsfaramCefixime is one of the most widely used antibiotics in the world that its presence in the environment, even at low concentrations, causes serious health problems. The current study was conducted with the aim of evaluating the efficiency of copper oxide/graphene oxide na MoreCefixime is one of the most widely used antibiotics in the world that its presence in the environment, even at low concentrations, causes serious health problems. The current study was conducted with the aim of evaluating the efficiency of copper oxide/graphene oxide nanocomposite functionalized with nanoplatinum as an efficient nano adsorbent in removing cefixime antibiotic from aqueous solutions. For this purpose, the effect of the main operating variables on the efficiency of the adsorbent in antibiotic removal was studied and optimized with the surface response method. Also, the adsorption behavior was investigated by isotherm, kinetic, and thermodynamic studies. The results showed that under optimal conditions, the experimental removal efficiency of cefixime was 99.38±1.25% and the Langmuir maximum adsorption capacity was calculated to be 213.41 mg g-1. Also, thermodynamic studies indicated the adsorption process was spontaneous in nature, endothermic, and reversible. The obtained results showed the potential ability of the presented nanocomposite in removing cefixime from polluted water. Manuscript profile -
Open Access Article
20 - Preparation of nanocomposites of graphene-metal-organic framework based on bismuth by laser ablation in liquid and investigation of optical properties and antibacterial activities of them
Negar Motakef Kazemi Fereydoon Ataei Davoud DorranianPulsed laser ablation (PLA) was used for the first time to synthesis graphene nanocomposites and bismuth-based metal-organic framework (Bi-MOF) in liquid environment. In this work, Bi-MOF nanostructures were synthesized by laser ablation of bismuth target as a connector MorePulsed laser ablation (PLA) was used for the first time to synthesis graphene nanocomposites and bismuth-based metal-organic framework (Bi-MOF) in liquid environment. In this work, Bi-MOF nanostructures were synthesized by laser ablation of bismuth target as a connector center, benzene-1,3,5-tricarboxylic acid (BTC) as a bridging ligand, and methanol (MeOH) and dimethylformamide (DMF) as a solvent. In the first step, three samples of Bi-MOF nanostructures were produced in three different ligand concentrations. Then MOF-graphene nanocomposites were produced by Nd:YAG pulsed laser ablation of graphite target in the three obtained Bi-MOF nanostructures samples. The nanocomposites were characterized by X-ray diffraction (XRD) to study the crystal structure, Fourier transform infrared (FTIR) spectroscopy to determine functional groups, field emission scanning electron microscopy (FESEM) and transmission electron microscopy (TEM) to present the morphology, ultraviolet-visible (UV-Vis) spectroscopy to evaluate the band gap of the samples. The antibacterial activity of the samples was evaluated against Escherichia coli (E. coli) as Gram-negative bacterium and Staphylococcus aureus (S. aureus) as Gram-positive bacterium. Based on the results, pulsed laser ablation is an environmentally friendly method that is able to produce MOF-graphene nanocomposites in a short period of time, and these nanostructures can be widely used, including in neutralizing harmful bacteria. Manuscript profile -
Open Access Article
21 - بررسی ویژگی جذبی و فتوکاتالیستی نانوچندسازه‌های سنتز شده بر پایه گرافن در حذف مواد رنگ‌زای پساب‌های صنعتی
فاطمه سخائی اسماعیل صلاحی محمدابراهیم علیا ایمان مباشرپور -
Open Access Article
22 - تأثیر اصلاح سطحی گرافن بر ضریب پوشش‌دهی امواج الکترومغناطیس نانوچندسازه گرمانرم یورتان/نانوگرافن
اعظم نصراصفهانی علی اصغر کتباب -
Open Access Article
23 - ساخت نانوذره‌های CuO در بستر موردنیت و بررسی ویژگی ضدباکتری آن
سمیرا کریمی افشین پوراحمد لیلا اسدپور -
Open Access Article
24 - Preparation, identification and application of ZnO/Bentonite nanocomposite in nitrate removal from contaminated watere
رباب شاهی معصومه خاتمیان بهارک دیوبندBentonite is a clay which has high surface area and makes it a good option for the placement of metal oxide nanoparticles, such as zinc oxide, thereby forming a nanocomposite. In the recent years, various applications of this kind of nanocomposites have been investigate MoreBentonite is a clay which has high surface area and makes it a good option for the placement of metal oxide nanoparticles, such as zinc oxide, thereby forming a nanocomposite. In the recent years, various applications of this kind of nanocomposites have been investigated by researchers in water and wastewater treatment. Accordingly, in this research, the bentonite was powdered by ball mills and then, ZnO/Bentonite nanocomposite was prepared by ultrasound irradiation and gel degradation method with starch. The nanocomposite was identified by XRD, FTIR, SEM and EDX techniques, and the efficiency of the sample was studied for removing of nitrate ions from water. The results showed that environmental factors such as pH, contact time, adsorbent amount, and nitrate concentration were effective in removal percentage. Optimal removing percentage of the nitrate solution with 30 mg/l was achieved by 0.6 g of nanocomposite which could remove 70% of the nitrate from solution. Manuscript profile -
Open Access Article
25 - Synthesis and characterization of graphitic carbon nitride/kaolin nanocomposite for photocatalytic removal of nitrate from aqueous solutions
Elham Asadi Mohammad Hadi Ghasemi Parviz Ahmadi Nahid Monajjemi Maryam Afsharpour Majid BaghdadiNitrate ion in water causes human poisoning and is very dangerous. Photocatalytic removal of nitrate from water and conversion to nitrogen gas is of great importance. In this study, heterogeneous nanocomposite g-C3N4/kaolinite, due to its natural kaolin substrate has be MoreNitrate ion in water causes human poisoning and is very dangerous. Photocatalytic removal of nitrate from water and conversion to nitrogen gas is of great importance. In this study, heterogeneous nanocomposite g-C3N4/kaolinite, due to its natural kaolin substrate has been considered to nitrate reduction in the presence of UV light. The results of nanocomposite photocatalyst analysis using FTIR, SEM, EDS, and XRD instruments have clearly shown that the surface of the kaolin is covered by graphitic carbon nitride. In this work, the nitrate aqueous solution containing nitrate ion (50 ppm) was subjected to a photocatalytic reaction. Nitrate removal results showed the highest rate of nitrate degradation in the first 60 minutes compared with graphitic carbon nitride and kaolin individually. With the removal efficiency of 93.15% using the above method, the initial concentration of 50 ppm reaches 3.5 ppm, nitrate ion, which is below the permissible level of nitrate according to the World Health Organization standard. Therefore, the use of nanocomposite is a convenient choice to remove nitrate from water due to the simplicity of the preparation and commercial access to the raw materials required for synthesis, as well as high efficiency and selectivity to N2 in nitrate degradation and non-contamination of effluent. Manuscript profile -
Open Access Article
26 - Comparing the ability of modified nanoclays with multiwall carbon nanotubes in adsorption of ibuprofen from aqueous solutions in the presence of UV light
sajad sedaghat pourya samiefar mohamad attar -
Open Access Article
27 - Synthesis and characterization of conductive hydrogel nanocomposite for controlled drug delivery of cis-platin
حسن فتحی نژاد جیرندهی مروارید نباتی احمدی معصومه مسکین فامThe present work is including synthesis and characterization of conductivity of a super-absorbent conductive hydrogelnanocomposte and its controlled drug release. For this purpose, superabsorbent conductive hydrogel by Guar gum was synthesized based on grafting copolyme MoreThe present work is including synthesis and characterization of conductivity of a super-absorbent conductive hydrogelnanocomposte and its controlled drug release. For this purpose, superabsorbent conductive hydrogel by Guar gum was synthesized based on grafting copolymerization of acrylic acid monomer and proximity of some carbon nanotubes; in addition, polymerization reaction was done in aqueous phase )distilled water( and in the presence of ammonium persulfate as initiator and Methylene bisacrylamide as cross-linked. The results were assessed by FT-IR, cyclic Voltammetry and Scanning Electron microscope. However, the effect of carbonnanotube’s amount on nanocomposite was characterized by increasing this amount, the gel content, equilibrium swelling in distilled water, pH sensitivity, and conductivity increases. In the second stage, cisplatin drug was loaded in hydrogelnao composite and the percentage of drug release in phosphate buffer solution )PBS( was measured by appropriate electrical stimulation. The results show that the synthesized hydrogel is reasonable option for controlled drug release Manuscript profile -
Open Access Article
28 - حذف سرب (II) و کادمیم از فاضلاب جنوب تهران با استفاده از نانوچندسازه Zeolite N.P./GO
سوسن صمدی آیناز کارخانه میثم مقدم برنا سید امیرعباس ذکریا -
Open Access Article
29 - Vanadium cross-linked CMC-PEG-PLGA based on nanocomposite hydrogel with sodium alginate coating as a pH-sensitive insulin delivery system
Seyyed Nabiollah Hosseini Asieh Abbassi Dolavi Seyed Javad Zia-e-Haq Ayyub Saeedi: In recent years, significant advances have been made in the use of biomedical polymers as targeted carriers for the release of drugs, proteins, and growth factors. Vanadium (V) nanocomposite hydrogels were prepared in this study due to the formation of vanadium nanopa More: In recent years, significant advances have been made in the use of biomedical polymers as targeted carriers for the release of drugs, proteins, and growth factors. Vanadium (V) nanocomposite hydrogels were prepared in this study due to the formation of vanadium nanoparticles inside the swollen CMC hydrogels. The formation of vanadium (V) nanoparticles in hydrogels has been studied using Fourier transform infrared spectroscopy (FTIR), X-ray diffraction patterns (XRD), scanning electron microscopy (SEM) experimental techniques. The XRD patterns analysis confirmed the formation of vanadium nanoparticles in a hydrogel matrix, and scanning electron microscopy micrographs also showed that the size of the nanoparticles was from 22 to 74 nm in the hydrogel matrix. The swelling behavior of nanocomposite hydrogels was studied at pH of 2.1 and 7.4. Hydrogels have shown better water absorption in less pH. Fourier transform infrared spectroscopy indicates the interaction between polysaccharides and the samples taken from the drug indicate that the drug-loaded peaks were loaded appropriately. With the release of drug from nanocomposite and pure hydrogel hydrogels, it was observed that its release rate in nanocomposite hydrogels was lower and the amount of its release decreased with increasing percentage of nanoparticles. In the cytotoxicity test after 24 h, the cell viability was in the range of 74.35% -96.05% (compared with the control sample, which was 100%). In the hydrogel nanocomposite sample containing insulin had the lowest cell viability of insulin 31.25 μg/ml after 24 h and it had the highest cell viability at 1000 (μg/ml) concentration with 25.7% cell cytotoxicity compared to the control group. Manuscript profile -
Open Access Article
30 - جذب رنگ بنفش بلوری از محلول‌های آبی با آب‌ژل‌های نانوچندسازه مغناطیسی بر پایه صمغ عربی حاوی نانوذرات کبالت
حسین قاسم زاده محمدی فاطمه مهدوی روچی بهمن واشقانی فراهانی -
Open Access Article
31 - Green synthesis of Ag nanoparticles on the calcite support using Salix aegyptiaca leaf extract and its catalytic activity investigation in removal of dyes
akbar Rostami leila rostamiIn this work, Ag nanoparticles (Ag NPs) were immobilized on the surface of mineral calcite (CaCO3) using leaf extract of pussy willow (Salix aegyptiaca) as reducing and stabilizing agent. Conversion of Ag+ to Ag NPs was carried out within a few minutes at room temperatu MoreIn this work, Ag nanoparticles (Ag NPs) were immobilized on the surface of mineral calcite (CaCO3) using leaf extract of pussy willow (Salix aegyptiaca) as reducing and stabilizing agent. Conversion of Ag+ to Ag NPs was carried out within a few minutes at room temperature. The calcite and its Ag nanocomposite (Ag NPs/Calcite) were characterized by fourier transform infrared (FTIR), ultraviolet and visible spectroscopy (UV-Vis), X-ray powder diffraction (XRD) and field emission scanning electron microscope (FESEM) couplied with energy dispersive X-ray spectroscopy (EDS or EDX), and transmission electron microscopy (TEM) techniques. The broad peaks between 450-500 nm in the UV-Vis spectrum of silver nanoparticles and Ag NPs/Calcite is assigned to a surface plasmon absorption. According to the TEM image, the average size of the Ag NPs on the surface of calcite surface was 11 nm. The Ag NPs/Calcite nanocomposite was used in the catalytic reduction reaction of methyl orange (MO), methylen blue (MB), and rhodamine B (RhB). The catalyst was reused three times without considerable loss in its activity. Manuscript profile -
Open Access Article
32 - مدل سازی و شبیه سازی بلورینگی در نانوچندسازه برپایه پلی پروپیلن/ گرافن در فرایند قالب گیری تزریقی
محمدرضا منافی پدرام منافی معصومه شیرزاد -
Open Access Article
33 - Synthesis, identification and improvement of thermal and mechanical properties of acrylic coatings by nanoparticles
Shokoufeh Bagheri Maryam Kalantari Somayeh Fozooni Hasan Hashemipour RafsanjaniThe polymer matrix in the organic-mineral hybrid nanocomposites is flexible and lightweight, and inorganic nanoparticles are responsible for high thermal stability and improved their mechanical properties. In this study, Methyl Methacrylate-Butyl Acrylate copolymer (BA- MoreThe polymer matrix in the organic-mineral hybrid nanocomposites is flexible and lightweight, and inorganic nanoparticles are responsible for high thermal stability and improved their mechanical properties. In this study, Methyl Methacrylate-Butyl Acrylate copolymer (BA-MMA) was synthesized by conventional emulsion polymerization with conversion percentage of 96.15%. In order to synthesize nanocomposite, nanoparticles of silver, titanium dioxide, iron oxide (Fe3O4), unmodified silica, and modified silica with 3-(tri-methoxysilyl) propyl methacrylate (MPS) and dichloromethyl vinylsilane (DMVS) modifiers were used. Based on the results of the thermal gravimetric analysis, nanocomposite prepared from BA-MMA copolymer-containing 0.3 g of modified silica with 0.183 milliliters of chloro-methyl vinyl-silane modifier showed the highest thermal stability. Mechanicl resistance of this sample in terms of the scratch was investigated by nano-scratch instrument and the results showed that, the coating with the lower friction coefficient 0.724 and lower scratch coefficient 0.267 has high scratch resistance. Chemical structure of synthesized compounds were confirmed by Fourier transform infrared spectroscopy. Manuscript profile -
Open Access Article
34 - Core–shell TiO2 coated magnetic mesoporous Nanocomposite modified with a surfactant for the removal of methylene blue dye from environmental water samples
maryam ezoddin laleh adl nasabIn this study, a core–shell TiO2 coated magnetic mesoporous nanocomposite (Fe3O4@MCM@TiO2) was synthesized and modified with an anionic surfactant for the removal of a cationic dye, (methylene blue) from well and wastewater samples. Fe3O4 was loaded on mesopore (M MoreIn this study, a core–shell TiO2 coated magnetic mesoporous nanocomposite (Fe3O4@MCM@TiO2) was synthesized and modified with an anionic surfactant for the removal of a cationic dye, (methylene blue) from well and wastewater samples. Fe3O4 was loaded on mesopore (MCM-41) and coated with TiO2 as a nano platelet shell. An anionic surfactant, sodium dodecyl sulfate (SDS), was used to modify the adsorbent through hemimicelles/admicelles process and also to prevent the agglomeration of the adsorbent. The surface chemical characteristics and morphology of the prepared Fe3O4@MCM@TiO2were studied by the Fourier transform infrared (FT-IR) spectroscopy, X-ray diffraction (XRD), Field emission scanning electron microscope (FESEM), and Brunauer-Emmett-Teller (BET) analytical techniques. The effect of effective parameters for the removal of methylene blue was also studied. The adsorption data fitted with the Langmuir model showed a short equilibrium time with the maximum capacity uptake of 227.27 mg g-1. This method was successfully applied for removal of methylene blue in environmental water samples with an appropriate recovery in the range of 89.0 and 94.2%. Manuscript profile -
Open Access Article
35 - بررسی ویژگی‌های نوری و گرمایی نانوچندسازه‌های زیست‌تخریب‌پذیر نشاسته-پلی‌وینیل الکل-نانوخاک رس و کربوکسی‌متیل‌سلولز-پلی‌وینیل الکل-نانوخاک رس
خدیجه دیده‌بان عطیه طالب ماهرو خالقی مقدم -
Open Access Article
36 - Synthesis of tin oxide-maghemite magnetic nanocomposite coated with chitosan pH-sensitive polymer and investigation of quercetin loading and release conditions
Maziar Ashouri mohsen ghorbani sohrab kazemiThe aim of this study was to investigate the loading and release conditions of quercetin using a pH-sensitive nanocarrier. Initially, tin oxide nanoparticles and magnetic nanocomposites were synthesized; then, chitosan biopolymer functionalized with folic acid was used MoreThe aim of this study was to investigate the loading and release conditions of quercetin using a pH-sensitive nanocarrier. Initially, tin oxide nanoparticles and magnetic nanocomposites were synthesized; then, chitosan biopolymer functionalized with folic acid was used to coat the magnetic nanocomposite. In order to optimize the nanocarrier, loading times (4, 3, 2, 1 and 5 hours), the amount of nanocarrier (10.5 and 15 mg), drug concentration (15, 25, 35, and 50 ppm), and solvent (methanol and Ethanol) were investigated with an iron to tin ratio of 0.2. Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), scanning electron microscopy (SEM), and particle size distribution were used to investigate the properties of nanoparticles, and according to the results, synthesized nanocomposites had a homogenous structure with particle size between 5 to 25 nm, the amount of carrier was 10 mg, the concentration of the drug was 15 ppm with methanol solvent and the loading time was 4 hours with a maximum loading efficiency of 85% and was selected as the optimal nanocarrier. The maximum adsorption capacity was obtained based on the Langmuir model and Sips were 36.2322 mg / g and 37.3915 mg / g, respectively. Absorption synthetic studies have shown that quercetin adsorption has followed second-degree synthetics. In order to evaluate the intelligent release of the drug, its release in laboratory conditions using phosphate salt solution with buffer properties in different pHs was investigated and the synthesized nanocarrier showed complete release in the acidic pH of 2.5. Manuscript profile -
Open Access Article
37 - بررسی ویژگی‌های نوری، ساختاری، ریخت‌شناسی و کاتالیستی نوری لایه‌های نازک نانوچندسازه ZnS:CuS تهیه‌شده به روش حمام شیمیایی
اعظم کریمی بهشته سهرابی -
Open Access Article
38 - Synthesis, characterization and study of Pt/A type-HMS micro/mesoporous catalysts in the normal heptane reforming process
Nastaran ParsafardIn present work, the gas phase reforming of normal heptane was used to study the catalytic activity of micro/mesoporous composites. The influence of the structures of these catalysts on the normal heptane conversion and the selectivity to various products including mult MoreIn present work, the gas phase reforming of normal heptane was used to study the catalytic activity of micro/mesoporous composites. The influence of the structures of these catalysts on the normal heptane conversion and the selectivity to various products including multi and mono branched isomers and cracking products was studied. Various characterization techniques, i.e., X-ray diffraction (XRD), X-ray florescence (XRF), Fourier transform infrared (FTIR), UV-Vis diffuse reflectance spectroscopy (UV-Vis DRS), thermogravimetry and differential thermal analyzer (TGA/DTA), and nitrogen adsorption-desorption measurements were used for characterization of the catalysts. The catalytic activity and stability in normal heptane reforming for platinated composite materials consisting of HMS mesopore section (hexagonal mesoporous silica) and microspore section of series A zeolites including 3A, 4A, and 5A, were very close to each other. However, the results show that the selectivity toward the formation of isomers is remarkably high for Pt/4A-HMS composite catalyst. The results show that the effective parameter on catalytic performance is the aluminum amount (or Si/Al ratio) in the structure of the prepared catalysts. Manuscript profile -
Open Access Article
39 - تهیه، شناسایی ساختار و ویژگی ضدباکتری نانوچندسازه‌های پلی(آنترانیلیک اسید)/نقره
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