ZnO2-promoted ZnO as an efficient photocatalyst for the photoreduction of carbon dioxide in the presence of water

被引：33

作者：

Guo, Qiangsheng ^{[1
,3
]}

Zhang, Qinghong ^{[1
]}

Wang, Hongzhi ^{[2
]}

Zhao, Zhe ^{[3
]}

机构：

[1] Donghua Univ, State Key Lab Modificat Chem Fibers & Polyer Mat, Shanghai 201620, Peoples R China

[2] Donghua Univ, Coll Mat & Engn, Shanghai 201620, Peoples R China

[3] Shanghai Inst Technol, Dept Mat Sci & Engn, Shanghai 201418, Peoples R China

来源：

CATALYSIS COMMUNICATIONS | 2018年 / 103卷

基金：

中国国家自然科学基金;

关键词：

ZnO2; ZnO; CO2; phototreduction; CH4; CH3OH; RAY PHOTOELECTRON-SPECTROSCOPY; CHARGE-CARRIER DYNAMICS; CO2; REDUCTION; PERFORMANCE ENHANCEMENT; VISIBLE ACTIVITY; LIGHT; COMPOSITE; NANOSTRUCTURES; CONVERSION; NANOWIRES;

D O I：

10.1016/j.catcom.2017.09.010

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

ZnO2-promoted ZnO photocatalysts were synthesized via 11202 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 photo reduction, with the total yield of 1.0Zn-60 increased from 3.5 mu mol L-1 to 73.5 mu mol 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.

引用

页码：24 / 28

页数：5

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