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Open Access Article
1 - Determination of kinetic and thermodynamic parameters of heavy metal removal from aqueous solution by nano zero valent iron (NZVI) and nano copper oxide (nCuO)
رقیه حمزه نژاد ابراهیم سپهر عباس صمدی میرحسن رسولی صدقیانی حبیب خداوردیلوIn order to study the equilibrium, kinetic and thermodynamic of cadmium (Cd), lead (Pb), copper (Cu) and zinc (Zn) adsorption by nano zero valent iron (nZVI) and nano copper oxide (nCuO), batch experiments carried out with different initial concentration of the metals a MoreIn order to study the equilibrium, kinetic and thermodynamic of cadmium (Cd), lead (Pb), copper (Cu) and zinc (Zn) adsorption by nano zero valent iron (nZVI) and nano copper oxide (nCuO), batch experiments carried out with different initial concentration of the metals at different time and temperature. The results showed that the removal efficiency and adsorption capacity of nano particlesincreased with increasing initial concentration. Among adsorption kinetic models, pseudo second order model was better fitted for experimental data (R2=0.99-1.00). The adsorption data were well fitted with Langmuir model compared to Freundlich, Temkin and Dubinin-Radushkevich models. Maximum mono layer adsorption (qmax) of Cd, Pb, Cu and Zn were obtained 218, 239, 242 and 215 mg g-1 for nano zero valent iron and 90, 176, 100 and 76 for nano copper oxide respectively. The sorption energy parameter (E) of Dubinin-Radushkevich isotherm and Gibbs free energy change (ΔG) indicated that the metals adsorption processes were physical and spontaneous. The separation factor of Langmuir (RL) indicated that the sorption reactions of metals by the nano particles is favorable (RL=0.03-0.50). Manuscript profile -
Open Access Article
2 - Sub-Lethal Effects of Exposure to Copper Oxide Nanoparticles on Growth Indices and Body Biochemical Composition of Common Carp (Cyprinus Carpio)
hasan sahraei Seyyed Abbas Hoseini Seyyed Aliakbar Hedayati Rasoul GhorbaniBackground and Objective: Due to the increasing use of nanoparticles in human activities, as well as its role in reducing the adverse effects of heavy metals on living organisms, at this study the effects of sub-lethal concentrations of copper nanoparticles were discuss MoreBackground and Objective: Due to the increasing use of nanoparticles in human activities, as well as its role in reducing the adverse effects of heavy metals on living organisms, at this study the effects of sub-lethal concentrations of copper nanoparticles were discussed on growth factors and biochemical composition carcass of common carp. Method: 82 carp with an average weight of 42 ± 2 g was prepared and after adaptation for the laboratory condition, were exposed at 42 days at three treatments (10, 40, 80 ppm) and three replicates respectively, also a control group were prepared with three replications under the affect of sub-lethal concentrations of copper oxide nanoparticles. Findings: Analysis of growth indices showed that all growth indices had significantly different (P<0/05) with metal treatments in compared to the control group. So the control group had the highest average body weight, percent of body weight, SGR rate, and feed conversion efficiency with averaging 2.93. The lowest specific growth rate and the highest rate of conversion were related to the treatment number three (80 ppm), respectively. The amount of ash, fat, protein and maximum moisture was observed at the control group. The highest percentage of protein and fat was at treatment (3) and concentration of 80 milligrams per litre of copper oxide nanoparticles that in this regard showed significant differences (P<0.05) with the control group. Discussion and Conclusion: The results indicate that the presence of copper oxide nanoparticles in aquatic ecosystems have negative effects on growth and biochemical composition of fish carcasses even at sub-lethal concentrations, that by increasing the concentration of the nanoparticles in aquatic ecosystems, the influence of these effects will become clearer. Manuscript profile -
Open Access Article
3 - Gill Histopathological Changes of Common Carp (Cyprinus carpio) During Exposure to Sub-Lethal Concentrations of Copper Oxide Nanoparticles
hasan sahraei Seyyed Abbas Hoseini Seyyed Aliakbar Hedayati Rasoul GhorbaniBackground and Objective:At the present century, using of copper Nano-particles has increased within the environment. In this regard influx of Nano-materials to the environment may have harmful impact on living organisms, including fish. The aim of this study was to exa MoreBackground and Objective:At the present century, using of copper Nano-particles has increased within the environment. In this regard influx of Nano-materials to the environment may have harmful impact on living organisms, including fish. The aim of this study was to examine histological lesions of cooper nanoparticles on the gill tissue of common carp. Method: In order to investigate the effects of histopathological changes of Nano copper oxide on the gill of carp, 60 pieces of young common carp with an average weight of 42± 2 gr were divided in 3 groups with three replicates for exposure group of Nano copper oxide (10, 40, 80, mg/l of copper oxide) and a control group of fish for 6 weeks. Findings: Histopathology of Gill tissue showed that the copper nanoparticles have such injuries as cell swelling, Aourtism , edema, secondary connecting adjacent blades, shortening of the secondary blade, and hyperplasia. Gill histopathological result showed that at high concentrations (80 ppm), lesions were mostly detachment, hyperplasia and sticking attach Lamela, versus harm in low concentrations (10 and 40 ppm) to form Aurism, inflation squamous cell and the shortening of the secondary blades. Discussion and Conclusion Due to changes of gill tissue in the common carp at various concentrations of copper nanoparticles compared with the control group, it can be concluded that copper nanoparticles can have significant effects on fish gill tissue. Therefore it can be used as a simple and useful tool to assess the impact of these new born contaminants on fish and also human environmental. Manuscript profile -
Open Access Article
4 - Synthesis of amidoalkyl naphthols in solvent-free conditions using iron oxide, zinc oxide and copper oxide green nanocatalysts
Samaneh Mohammad Ebrahimzadeh Sepasgozar Sharareh Mohseni Babak Feizyzadeh Ali MorsaliIn recent years, attention has been paid to using recyclable nanocatalysts as heterogeneous catalysts in producing organic compounds. In this research, an eco-friendly synthesis of amido alkyl naphthols is described from the reaction of β-naphthol and various aroma MoreIn recent years, attention has been paid to using recyclable nanocatalysts as heterogeneous catalysts in producing organic compounds. In this research, an eco-friendly synthesis of amido alkyl naphthols is described from the reaction of β-naphthol and various aromatic aldehydes, amides, and amines by using magnetic Iron oxide nanoparticles (Fe3O4 NPS), Zinc Oxide nanoparticles (ZnO NPS), and Copper Oxide nanoparticles (CuO NPS) as heterogeneous catalysts. The structure of products was studied using characterization techniques such as Fourier Transform Infrared Analysis (FTIR), 13CNMR, and 1HNMR. The reusability of the catalyst for this synthesis has been studied for at least four runs without significant loss of their activities. Manuscript profile -
Open Access Article
5 - Photocatalytic and Sonocatalytic Removal of Reactive Red 195 Dye in the Presence of Copper Oxide Nanoparticles Synthesized from Peganum harmala Extract
R. Fekri S.A. Mirbagheri E. Fataei G.R. Ebrahimzadeh-Rajaei L. Taghavi -
Open Access Article
6 - Green synthesis of Copper Oxide Nanopartcles Using Extract of Hypericum Perforatum and Marrubium Vulgare and Evaluation of Antioxidant Properties of Herbal Extracts and Antibacterial Feature of Green-Synthesized Nanostructures
F. Ghahremani C. Izanloo -
Open Access Article
7 - Investigation of antimicrobial properties of green synthesized CuO nanostuctures using Berberis integerrima aqueous extract on infected surgical wound caused by Staphylococcus aureus
Parvin Eskandari Faeze Naghilonia Reza Shapouri Mahdi ArfaeiBackground & Aims: CuO is one of the most important transition metal oxides due to its interesting properties. It is used in various technological applications such as high critical temperature superconductors, gas sensors, photocatalyst, and so on. Staphylococcus a MoreBackground & Aims: CuO is one of the most important transition metal oxides due to its interesting properties. It is used in various technological applications such as high critical temperature superconductors, gas sensors, photocatalyst, and so on. Staphylococcus aureus bacteria causes a wide range of infectious diseases. In this study, the antimicrobial activity of the synthesized copper oxide nanoparticles in the presence of Berberis integerrima aqueous extract on the infected surgical wound caused by this bacterium was investigated in mice. Materials and methods: First, copper oxide nanoparticles were synthesized in the presence of Berberis integerrima aqueous extract and confirmed by XRD, FT-IR, FE-SEM analyses, and the MIC and MBC levels of the nanostructures used were determined by the dilution method in Mueller Hinton Broth culture medium. Also, after creating a skin wound and inoculating the solution of Staphylococcus aureus bacteria with a concentration of (5 × 105 CFU/ml), the concentration of MBC along with Eucerin ointment was checked on the infected wounds. Results: In general, copper oxide nanoparticles synthesized in the presence of Berberis integerrima aqueous extract has a significant antimicrobial activity to control the growth of Staphylococcus aureus bacteria. Also, the synthesized copper oxide has a favorable antimicrobial and reparative effect on the infected surgical wound caused by this bacterium. Conclusion: According to the findings, copper oxide nanoparticles can be effectively and efficiently synthesized by Berberis integerrima aqueous extract in simple and environmentally friendly conditions. It also has a significant antibacterial effect on Staphylococcus aureus bacteria and has a favorable reparative effect compared to Eucerin ointment. Copper oxide nanoparticles can be expected to play an effective role in the treatment of microbial infections. Key words: Berberis integerrima, copper nanoparticles, Eucerin, mice, Staphylococcus aureus. Manuscript profile -
Open Access Article
8 - جذب رنگهای اریتروزین و کارموزین قرمز از محلولهای آبی با جاذب نانو اکسید مس: بررسی سینتتیکی و ترمودینامیکی
محمد کاظم محمدی -
Open Access Article
9 - Synthesis of copper oxide nanoparticles by chemical method and investigation of their antimicrobial properties
Mina Ramezani Asma Shamsai Ramin Mohammadi-AlouchehIntroduction: Copper oxide is one of the most important metal oxides that has unique properties in various technological applications, such as superconductors, and has been used as an antimicrobial agent against numerous bacterial species. In the present study, CuO Nps MoreIntroduction: Copper oxide is one of the most important metal oxides that has unique properties in various technological applications, such as superconductors, and has been used as an antimicrobial agent against numerous bacterial species. In the present study, CuO Nps was synthesized using chemical methods and its antimicrobial activity was investigated. Materials and Methods: Copper oxide nanoparticles were synthesized using the microwave method, and XRD, EDX, SEM, FTIR, and UV-vis analyses were performed to investigate the physical and chemical properties. The antimicrobial and antifungal effects of copper oxide nanoparticles on pathogenic bacteria including Staphylococcus aureus, Escherichia coli, and Fusarium solani were evaluated using MIC and MBC tests and well diffusion assay. Results: The results showed that at a concentration of 20 mg/mL, copper oxide nanoparticles inhibited the growth of Staphylococcus aureus. Similarly, growth inhibition of Escherichia coli was observed at a concentration of 4 mg/mL of nanoparticles. Furthermore, Fusarium solani exhibited increased sensitivity to copper oxide nanoparticles at concentrations higher than 50 mg/mL, with a growth inhibition zone diameter of 18 mm at a concentration of 100 mg/mL. Discussion and Conclusion: Copper oxide nanoparticles can be introduced as a strong antimicrobial agent. Manuscript profile -
Open Access Article
10 - Histopathological study of gill in common carp (Cyprinus carpio) and goldfish (Carassius auratus) during exposure to lethal concentrations of nano-zinc oxide, nano copper oxide and nano titanium dioxide
Aliakbar Hedayati Fatemeh Darabitabar hassan rezaeiApart from skin, gills are the first place of direct exposure of fish to toxins or pollutants therefore study of changes in gill structure is a suitable indicator of toxins or pollutants under stressful conditions. The aim of this study was to investigate pathological a MoreApart from skin, gills are the first place of direct exposure of fish to toxins or pollutants therefore study of changes in gill structure is a suitable indicator of toxins or pollutants under stressful conditions. The aim of this study was to investigate pathological alterations of gill tissue in common carp during exposure to different nanoparticles. For this study, 210 fry common carp with a total length of 7.36±0.30 cm and goldfish with a total length of 6.50±0.43 cm in 6 treatments with 3 replicates in each treatment were placed in 60 liter aquariums in groups of 11 individuals. Gill tissue samples of common carp and goldfish were taken 7 days after exposure to 50% lethal concentration of nano-zinc oxide, nano copper oxide and titanium dioxide nanoparticles. Histological changes were evident in samples exposed to nano-zinc oxide, nano copper oxide and titanium dioxide nanoparticles while no detectable changes were observed in control gill. The symptoms observed in both fish consisted of gill hyperplasia, adhesion of secondary lamellae, increased levels of mucus and hyperemia. The most common complication observed was gill hyperplasia and an increase in the amount of mucus. The results of this study indicate that 50% lethal concentration of nanoparticles of titanium, copper and zinc can cause tissue damage and destruction. Also, sub-lethal toxicity of nano-zinc oxide is higher than nano copper oxide and nano titanium dioxide and causes much wider effects on gill tissue of common carp and goldfish. Manuscript profile -
Open Access Article
11 - Investigation of structural and antimicrobial properties of copper oxide nanoparticles produced using Iranian violet extract
Ali Davari Vahid Hakimzadeh Elham Mahdian mostsfa shahidiThe bio-production method has been respected due to the lack of energy consumption and environmental compatibility. In this study, the green synthesis of copper oxide nanoparticles from the extract of Iranian violent flower and its anti-bacterial properties compared to MoreThe bio-production method has been respected due to the lack of energy consumption and environmental compatibility. In this study, the green synthesis of copper oxide nanoparticles from the extract of Iranian violent flower and its anti-bacterial properties compared to two common antibiotics was investigated. First, aqueous extract of Iranian violent flower prepared and admixed with CuO solution at a concentration of 1 mM. After changing the color of extract, the reaction product was examined by spectrophotometric and X-ray diffraction. Finally, antibacterial properties of synthesized nanoparticles were investigated using disk diffusion method. Also, the MIC (minimum inhibitory concentration of growth and MBC (minimum bactericidal concentration) were determined by two methods of micro dilution and dilution in the tube. The synthesized copper oxide nanoparticles showed the most absorbance at 266 nm and had a spherical shape with an average size of 50-80 nm. The results of the antibacterial studies showed that the synthesized copper oxide nanoparticles had more antibacterial activity against staphylococcus aureus than Escherichia coli. The extract of Iranian violent flower has the ability of reducing CuO ion to copper oxide nanoparticles. Also, synthesized copper oxide nanoparticles have good antibacterial activities. Manuscript profile -
Open Access Article
12 - Optimization and Characterization of Plant-Mediated Green Synthesis of Copper Oxide Nanoparticles Using Leaf Aqueous Extract of Hibiscus Sabdariffa L.
sahar sadegnia ebrahim molashahi alireza einali omid azizian sharmePhysical and chemical methods for synthesis of nanoparticles are not cost efficient. Present study is the first report to phytosynthesis of Copper Oxide nanoparticles using leaf aqueous extract of Hibiscus sabdariffa L. In this research, 2 ml of extract was added to 4 m MorePhysical and chemical methods for synthesis of nanoparticles are not cost efficient. Present study is the first report to phytosynthesis of Copper Oxide nanoparticles using leaf aqueous extract of Hibiscus sabdariffa L. In this research, 2 ml of extract was added to 4 ml of CuCl2.2H2O with concentration 10 mM. In order to obtain nanoparticles with uniform shape and size, the parameters affecting to synthesis, such as: pH of reaction, volume and concentration of extract, concentration of Copper salt and time of reaction were studied and all of them were optimized by UV-Vis spectrophotometry technique. Transmission Electron Microscopy (TEM) and Fourier Transformation Infra-Red (FT-IR) spectroscopy were used for investigated the shape and size of nanoparticles and detection the functional groups involved in the synthesis and stabilization Copper Oxide nanoparticles respectively. Results showed that the extract of Hibiscus sabdariffa L. can reduces the Cu 2+ ions to Cu 0 atoms with nano metric size and the color of solution changed to green. The TEM image of CuO NPs showed that the average size was between 10-20 nm and all of them had spherical shape. Also, the best condition for the synthesis of Copper Oxide nanoparticles were at: pH= 8, 9 mL of extract with concentration of 5% and CuCl2.2H2O with concentration of 10 mM and these nanoparticles were very stable in 6 days after synthesis. Manuscript profile
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