فهرس المقالات Solvothermal

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  1 - Synthesis and Characterization of Zn3 (BTC)2 Nanoporous Sorbent and its Application for Hydrogen Storage at Ambient Temperature
  Mansoor Anbia Mojtaba Faryadras Ali Ghaffarinejad
  Metal organic frameworks (MOFs) are considered an interesting option for hydrogen storage. These materials show an exceptional H2 uptake. Here, Zn3(BTC)2as MOF was synthesized with a solvothermal method. The phase stability and microstructure of the Zn3(BTC)2was chara أکثر

  Metal organic frameworks (MOFs) are considered an interesting option for hydrogen storage. These materials show an exceptional H2 uptake. Here, Zn3(BTC)2as MOF was synthesized with a solvothermal method. The phase stability and microstructure of the Zn3(BTC)2was characterized in terms of their properties and structures, using a number of analyticaltechniques including FT-IR, XRD, SEM, BET and TGA. The analyses confirmed that theproduct has a conical shape structure with a Langmuir specific surface area of over 257m²/g. This MOF has shown to have a hydrogen storage capacity of 0.8 wt% at room temperatureand 13 bar. تفاصيل المقالة
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  2 - Novel Solvothermal Route for the Synthesis of Pure Ultrafine Anatase Nanoparticles
  Aliakbar Tarlani Fatemeh Darkhosh
  Titanium oxide nanoparticles were synthesized via a solvothermal treatment of titanium isopropoxide in the presence of L-lysine (lysine). The prepared nanostructures characterized by atomic force microscopy (AFM), X-ray diffraction (XRD), thermogravimetric analysis (T أکثر

  Titanium oxide nanoparticles were synthesized via a solvothermal treatment of titanium isopropoxide in the presence of L-lysine (lysine). The prepared nanostructures characterized by atomic force microscopy (AFM), X-ray diffraction (XRD), thermogravimetric analysis (TGA), diffraction scanning calorimetry (DSC), scanning electronic microscopy (SEM), transmission electron microscopy (TEM) and photoluminescence (PL) spectroscopy. Results exhibited that peptization in the absence of the additive led to the non-uniform (from nano to micro size) anatase particles, while well-dispersed anatase nanoparticles were obtained in the small range from titania-lysine precursor. Well-organizing the growth of anatase particles during the calcinations can be attributed to initial amorphous phase of the as-synthesized lysine sample. تفاصيل المقالة
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  3 - Enhancement of Methane Adsorption by Lithium Doping into Metal-Organic Framework Cu-BDC
  Mansoor Anbia Hosein Pazoki
  Copper (II) carboxylate, (Cu-BDC), metal-organic-framework (MOF) has been synthesized undersolvothermalconditions and used as a new adsorbent for the methane. The Lithium doping intoCu-BDC, (Li-Cu-BDC), is made by impregnating Cu-BDC with an ethanol solution ofLiNO3, أکثر

  Copper (II) carboxylate, (Cu-BDC), metal-organic-framework (MOF) has been synthesized undersolvothermalconditions and used as a new adsorbent for the methane. The Lithium doping intoCu-BDC, (Li-Cu-BDC), is made by impregnating Cu-BDC with an ethanol solution ofLiNO3, followed by heat treatment in vacuum. The adsorbent was characterized by X-ray diffraction (XRD), Fourier transform infrared (FT-IR), Thermogravimetric analysis (TGA). Inductively coupled plasma atomic emission spectrometry (ICP-AES) and Brunauer-Emmet- Teller (BET) technique. The Sorption capacity of the methane on Cu-BDC and Li-Cu-BDC range of pressure 1-20 bar and at 298 K was investigated by volumetric measurement. This work shows that Li-Cu-BDCCompared with Cu-BDC has higher sorption capacity for CH4. تفاصيل المقالة
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  4 - Solvothermal synthesis of copper nanoparticles loaded on multi-wall carbon nanotubes as catalyst for thermal decomposition of ammonium perchlorate
  Hassan Tavakoli Rasoul Sarraf-Mamoory Alireza zarei
  Copper nanoparticles were synthesized on multiwall carbon nanotubes, (Cu)/(MWCNTs), based on solvothermal method. The used reagents include MWCNTs, cupric nitrate trihydrate (Cu (NO3)2.3H2O), diethylene glycol (DEG), diethanol amine. Characterization of Cu/MWCNTS nanopa أکثر

  Copper nanoparticles were synthesized on multiwall carbon nanotubes, (Cu)/(MWCNTs), based on solvothermal method. The used reagents include MWCNTs, cupric nitrate trihydrate (Cu (NO3)2.3H2O), diethylene glycol (DEG), diethanol amine. Characterization of Cu/MWCNTS nanoparticles was performed by techniques of Fourier transform infrared spectroscopy (FTIR), Raman spectroscopy, X-ray diffraction spectroscopy (XRD), Inductively coupled plasma (ICP), differential scanning calorimeter (DSC), and Field Emission Scanning Electron Microscopy (FE-SEM).The results show that the surface of MWCNTs is covered by Cu nanoparticles, and the diameter of Cu/MWCNTs nanoparticles gets larger than that of MWCNTs. Furthermore, in the presence of Cu/MWCNTs composite particles, the synthesized Cu/MWCNTs showed 95% Cu loaded on the MWCNTs. The results showed that using 3 wt.-% Cu/MWCNTs nano catalyst lowered the decomposition temperature of AP by 121.76 °C. The total enthalpy, for this case, was 1384.46 J g -1. This work indicates that the catalytic performance of Cu/MWCNTs can be improved the thermal decomposition of AP. تفاصيل المقالة
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  5 - Simple solvothermal synthesis of a novel Er3+ and Nd3+ doped Sr2As2O7 nanomaterials and investigation of catalytic performance for synthesis of organic compounds
  shahka Ekhtiyari leila kafi ahmadi shahin khademinia
  10.22034/jna.2021.1911170.1232
  Doping some lanthanide ions into Sr2As2O7 crystal system is reported for first time by a simple solvothermal method using Sr(NO3)2, As2O3, Er2O3 and Nd2O3 compounds. Characterization of the as-synthesized nanomaterials is done by powder X-ray (PXRD) analysis. Rietveld a أکثر

  Doping some lanthanide ions into Sr2As2O7 crystal system is reported for first time by a simple solvothermal method using Sr(NO3)2, As2O3, Er2O3 and Nd2O3 compounds. Characterization of the as-synthesized nanomaterials is done by powder X-ray (PXRD) analysis. Rietveld analysis data confirmed that the synthesized materials were crystallized in a mixture of three crystal phases. FESEM images revealed that dopant ion type had a considerable effect on the morphology of the final product. The data showed that the morphology of the synthesized materials were comb-like structure and particle. Direct band gap energy (Eg) of the materials obtained using ultraviolet-visible spectra showed that the Eg was about 3.5 eV. The synthesized nanomaterials were used as catalyst in the Biginelli reactions. The data confirmed that the materials could behave as Lewis acid catalyst in the reactions. The catalytic performance of the synthesized sample was 92% when the catalyst amount was 0.03 g, reaction temperature was 90 °C and the reaction time was 100 min. تفاصيل المقالة
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  6 - Synthesis of TiO2 nanorods with a microwave assisted solvothermal method and their application as dye-sensitized solar cells
  Hossein Rezvani Nikabadi Saeed Khosroababdi
  10.22034/jna.2019.1877392.1157
  In this work, Titanium dioxide (TiO2) nanostructures have been synthesized via a microwave assisted solvothermal method using titanium tetraisopropoxide (TTIP), polyvinylpyrrolidone (PVP) and Ascorbic Acid (AA) in ethanol. The mole ratio of PVP/AA was found to be critic أکثر

  In this work, Titanium dioxide (TiO2) nanostructures have been synthesized via a microwave assisted solvothermal method using titanium tetraisopropoxide (TTIP), polyvinylpyrrolidone (PVP) and Ascorbic Acid (AA) in ethanol. The mole ratio of PVP/AA was found to be critical in determining the morphology and crystal phase of the final product. PVP/AA mole ratio was varied from 1 up to 15 to obtain different morphologies of TiO2. The structural analysis by XRD diffraction confirmed formation of titanium dioxide. The Williamson-Hall (W-H) analysis was used to study the individual contributions of crystallite sizes and lattice strain on the peak broadening of the TiO2 nanoparticles. FTIR spectrum was used to estimate the various functional groups present in the nanostructures. Scanning electron microscope (SEM) images demonstrated nanoparticle, short nanorod, and long nanorods for 5, 10 and 15 mole ratio of PVP/AA respectively. TiO2 nanoparticles and nanorods have been used as photoelectrode in dye-synthesized solar cell (DSSCs) fabrication. The efficiencies of solar cells were calculated 3.23% and 4.01% for nanoparticles and nanorods, respectively. تفاصيل المقالة
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  7 - Synthesis of TiO2 nanorods with a microwave assisted solvothermal method and their application as dye-sensitized solar cells
  Hossein Rezvani Nikabadi Saeed Khosroababdi
  10.22034/jna.2020.675050
  Inthiswork, Titanium dioxide (TiO2) nanostructures have beensynthesized via amicrowave assisted solvothermalmethod using titanium tetraisopropoxide (TTIP),polyvinylpyrrolidone(PVP) and Ascorbic Acid (AA) in ethanol. The mole ratio ofPVP/AA was found to be critical in de أکثر

  Inthiswork, Titanium dioxide (TiO2) nanostructures have beensynthesized via amicrowave assisted solvothermalmethod using titanium tetraisopropoxide (TTIP),polyvinylpyrrolidone(PVP) and Ascorbic Acid (AA) in ethanol. The mole ratio ofPVP/AA was found to be critical in determining the morphology and crystal phaseof the final product. PVP/AA mole ratio varied from 1 up to 15 to obtain differentmorphologies of TiO2. The structural analysis by XRD diffraction confirmedformation of titanium dioxide. The Williamson-Hall (W-H) analysis was usedto study the individual contributionsofcrystallite sizes and lattice strain on thepeak broadening of the TiO2 nanoparticles.FTIR spectrum was used to estimatethe various functional groups present in the nanostructures. Scanning electronmicroscope (SEM) images demonstrate nanoparticle, short nanorod, and longnanorods for 5,10 and 15 mole ratio of PVP/AA respectively. TiO2 nanoparticlesand nanorodshave been used as photoelectrode in dye-synthesized solar cell(DSSCs) fabrication. The efficiencies of solar cells were calculated 3.23%and4.01% for nanoparticles and nanorods, respectively. تفاصيل المقالة
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  8 - Facile Synthesis of Pd/Cu2O Octahedral with Enhanced Photocatalytic Activity and Its Application of Degradation of Direct Red 278
  Shahla Ekhtiyari Leila Kafi-Ahmadi Shahin Khademinia
  10.22034/jna.2021.685875
  Doping some lanthanide ions into Sr2As2O7 crystal system is reported for thefirst time by a simple solvothermal method using Sr(NO3)2, As2O3, Er2O3 andNd2O3 compounds. Characterization of the as-synthesized nanomaterials isdone by powder X-ray (PXRD) analysis. Rietveld' أکثر

  Doping some lanthanide ions into Sr2As2O7 crystal system is reported for thefirst time by a simple solvothermal method using Sr(NO3)2, As2O3, Er2O3 andNd2O3 compounds. Characterization of the as-synthesized nanomaterials isdone by powder X-ray (PXRD) analysis. Rietveld's analysis data confirmed thatthe synthesized materials were crystallized in a mixture of three crystal phases.FESEM images revealed that dopant ion type had a considerable effect on themorphology of the final product. The data showed that the morphology of thesynthesized materials was comb-like structure and particle. Direct bandgapenergy (Eg) of the materials obtained using ultraviolet-visible spectra showed thatthe Eg was about 3.5 eV. The synthesized nanomaterials were used as catalysts inthe Biginelli reactions. The data confirmed that the materials could behave asLewis acid catalyst in the reactions. The catalytic performance of the synthesizedsample was 92% when the catalyst amount was 0.03 g, the reaction temperature was90 °C and the reaction time was 100 min. تفاصيل المقالة
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  9 - بررسی اثر حلال های اتانول، اتیلن گلیکول و آب دیونیزه بر خواص ساختاری و نوری نانومواد هیبریدی نقره-اکسیدمس ساخته شده به روش مایکرویو-سولوترمال/هیدروترمال
  مهرداد سلطانی فرید جمالی شینی
  برای سنتز نانومواد هیبریدی نقره و اکسیدمس با فرآیند مایکروویو-سولوترمال/هیدروترمال از آب دیونیزه، اتانول و اتیلن گلیکول به عنوان حلال استفاده شده است. اثر نوع حلال بر خواص ساختاری و نوری مورد مطالعه قرار گرفت. نمونه های بدست آمده با استفاده ازآنالیزهای الگوی پراش، میکرو أکثر

  برای سنتز نانومواد هیبریدی نقره و اکسیدمس با فرآیند مایکروویو-سولوترمال/هیدروترمال از آب دیونیزه، اتانول و اتیلن گلیکول به عنوان حلال استفاده شده است. اثر نوع حلال بر خواص ساختاری و نوری مورد مطالعه قرار گرفت. نمونه های بدست آمده با استفاده ازآنالیزهای الگوی پراش، میکروسکوپ الکترونی عبوری، طیف سنجی نورتابناکی و جذبی مورد مشخصه یابی قرار گرفتند. برای تمام نمونه ها دمای تابش دهی °C 120 و زمان تابش دهی min 5 استفاده شده است. مطالعات الگوی پراش نمونه ها نشان داد که محصول بدست آمده دارای فاز های نقره و اکسیدمس می باشد. آنالیز عنصری نمونه ها حضور عناصر نقره، مس و اکسیژن را در نمونه ها نشان داد. تصاویرمیکروسکوپ الکترونی عبوری حکایت ازشکل های غیر منظم و بهم چسبیده نقره و اکسیدمس دارد. لبه جذب در مقایسه با حالتی که از آب دیونیزه استفاده شد یک جابجایی بسمت طول موج های کمتر (جابجایی آبی) را نشان داد. یک کاهش در شدت باند گسیلی برای نانوساختارهای سنتز شده در اتانول و اتیلن گلیکول در مقایسه با نمونه ساخته شده در آب دیونیزه وجود دارد. تفاصيل المقالة