کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4756266 1419007 2018 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Short communicationZnO2-promoted ZnO as an efficient photocatalyst for the photoreduction of carbon dioxide in the presence of water
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی کاتالیزور
پیش نمایش صفحه اول مقاله
Short communicationZnO2-promoted ZnO as an efficient photocatalyst for the photoreduction of carbon dioxide in the presence of water
چکیده انگلیسی


- The hybrid ZnO2/ZnO was produced by an H2O2 treatment procedure with varying concentrations.
- The total yield of 1.0Zn-60 increased from 3.5 μmol L− 1 to 73.5 μmol L− 1 of pristine ZnO.
- The ZnO2/ZnO possesses abundant oxygen vacancies and OH, which are active sites of CH4 and CH3OH.

ZnO2-promoted ZnO photocatalysts were synthesized via H2O2 treatment, and their structural properties, optical properties, and activity for CO2 photoreduction were systematically studied. It was revealed that an excess of ZnO2 increased the surface area and enhanced oxygen vacancies, which significantly increased the adsorption capacity of molecular CO2. As a result, ZnO2-promoted ZnO showed a 21 times enhancement of CO2 photoreduction, with the total yield of 1.0Zn-60 increased from 3.5 μmol L− 1 to 73.5 μmol L− 1 of pristine ZnO. Based on the results of in situ CO2-IR and product distribution, a reaction mechanism for CO2 photoreduction on ZnO catalyst was proposed.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Catalysis Communications - Volume 103, 5 January 2018, Pages 24-28
نویسندگان
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