کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6454855 1418818 2017 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Preparation and characterization of Cu modified BiYO3 for carbon dioxide reduction to formic acid
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی کاتالیزور
پیش نمایش صفحه اول مقاله
Preparation and characterization of Cu modified BiYO3 for carbon dioxide reduction to formic acid
چکیده انگلیسی


- CO2 was photocatalytic reduction to formic acid by Cu/BiYO3 under visible-light.
- The oxygen vacancies were formed in Cu/BiYO3.
- The separation of photo-generated carriers of BiYO3 was improved by doping with Cu.
- The Cu/BiYO3 has a better electronic transmission capacity than the BiYO3.
- The photocatalytic activity of BiYO3 was enhanced by doping with Cu.

Bismuth yttrium oxide (BiYO3) photocatalysts doped with different Cu amounts were synthesized via a hydrothermal method, characterized and applied for the photocatalytic reduced CO2 to formic acid under the visible light irradiation. The particle size of Cu/BiYO3 was smaller than that of BiYO3, and the surface area of BiYO3 was increased from 6.75 m2/g to 18.64 m2/g when the Cu doping amount of was 2.0%. The FT-Raman results reveal the formation of oxygen vacancies after doping with Cu, which suppressed the charge recombination, and the electrochemical impedance spectroscopy (EIS) proved that the Cu/BiYO3 has a better electronic transmission capacity. The HCOOH amount of photocatalytic reduction of CO2 was 2.04 μmol /mL by using 2.0% Cu/BiYO3 as photocatalyst, which was 2.2 times than that of BiYO3. The highly improved performance of the 2.0% Cu/BiYO3 can be ascribed to the increased surface area, increased light absorption, and efficient charge separation.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Catalysis B: Environmental - Volume 202, March 2017, Pages 364-373
نویسندگان
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