نتایج جستجو برای: cotio3 clay
تعداد نتایج: 21990 فیلتر نتایج به سال:
CoTiO3-clay nano-composites were synthesized via a conventional sol-gel method; the gel was calcinated at 500 - 800°C for 2 hours. The presence of rhombohedra phase of CoTiO3 in clay matrix was confirmed by XRD, FTIR, SEM. Cobalt titanate-clay nano-composites were prepared with 5-20%(w/w) by sol-gel method. The spectra results were investigated at 20% (w/w) concentration .The optimum condition ...
cotio3-clay nano-composites were synthesized via a conventional sol-gel method; the gel was calcinated at 500 - 800°c for 2 hours. the presence of rhombohedra phase of cotio3 in clay matrix was confirmed by xrd, ftir, sem. cobalt titanate-clay nano-composites were prepared with 5-20%(w/w) by sol-gel method. the spectra results were investigated at 20% (w/w) concentration .the optimum condition ...
CoTiO3-clay nano-composites were synthesized via a conventional sol-gel method; the gel was calcinated at 500 - 800°C for 2 hours. The presence of rhombohedra phase of CoTiO3 in clay matrix was confirmed by XRD, FTIR, SEM. Cobalt titanate-clay nano-composites were prepared with 5-20%(w/w) by sol-gel method. The spectra results were investigated at 20% (w/w) concentration .The optimum condition ...
The low-temperature heat capacities of nickel titanate (NiTiO3), cobalt titanate (CoTiO3), and cobalt carbonate (CoCO3) were measured between 2 and 300 K, and thermochemical functions were derived from the results. Our new data show previously unknown low-temperature lambda-shaped heat capacity anomalies peaking at 37 K for CoTiO3 and 26 K for NiTiO3. From our data we calculate standard molar e...
Co/TiO2 catalysts with different cobalt loadings (3.8, 7.5 and 15 wt%) were prepared by impregnation method of Co(NO3)2 6H2O over titania. Samples containing Co(NO3)2·6H2O TiO2 in stoichiometric proportions order to obtain CoTiO3 Co2 TiO4 phases also synthesized. The effect the calcination treatment at two temperatures, 550 1150 °C, was investigated. Characterizations several techniques, such a...
Bimetallic oxides are demonstrated to show better electrochemical performance than single transition metal oxides. Recently, ilmenite-type titanate (MTiO3, M = Fe, Co, Ni, etc.) is emerging as a promising anode for lithium-ion batteries (LIBs) due its comparable theoretical capacity and small volumetric change during cycling. However, the practical still harmed by poor electronic conductivity. ...
در این تحقیق نانوکامپوزیت CoTiO3/TiO2 با دو نسبت وزنی مختلف TiO2 و CoTiO3 از پیش مادههای تیتانیمایزوپروپکساید (TTIP) و استاتکبالت بهروش سل-ژل سنتز و بهروش غوطهوری برروی شیشهی سودالایم لایهنشانی شدند. نمونهها با سرعت oC/min 5 به دمای oC600 رسانده شدند و بهمدت 4ساعت در کوره کلسینه شدند. آنالیز فازی و ریزساختاری نمونهها با پراش پرتو ایکس (XRD) و میکروسکوپ الکترونی روبشی(SEM) مورد بررسی...
در این تحقیق نانوکامپوزیت cotio3/tio2 با دو نسبت وزنی مختلف tio2 و cotio3 از پیش ماده های تیتانیم ایزوپروپکساید (ttip) و استات کبالت به روش سل-ژل سنتز و به روش غوطه وری برروی شیشه ی سودالایم لایه نشانی شدند. نمونه ها با سرعت oc/min 5 به دمای oc600 رسانده شدند و به مدت 4ساعت در کوره کلسینه شدند. آنالیز فازی و ریزساختاری نمونه ها با پراش پرتو ایکس (xrd) و میکروسکوپ الکترونی روبشی(sem) مورد بررسی ...
Photocatalytic H2 evolution from ethanol dehydrogenation is a convenient strategy to store solar energy in highly valuable fuel with potential zero net CO2 balance. Herein, we report on the synthesis of CoTiO3/TiO2 composite catalysts controlled amounts distributed CoTiO3 nanodomains for photocatalytic dehydrogenation. We demonstrate these materials provide outstanding hydrogen rates under UV a...
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