期刊
ACS CATALYSIS
卷 9, 期 1, 页码 25-37出版社
AMER CHEMICAL SOC
DOI: 10.1021/acscatal.8b03638
关键词
photocatalysis; light intensity; titanium dioxide (TiO2); oxygen reduction; hydrogen peroxide (H2O2); catalyst inactivation
资金
- German Research Foundation (DFG) [BL 1425/1-1]
This study focuses on understanding the mechanisms for optimization of the photocatalytic hydrogen peroxide production over TiO2 (Aeroxide P25). Via precise control of the reaction parameters (pH, temperature, catalyst amount, oxygen content, sacrificial electron donor, and light intensity), it is possible to tune either the apparent quantum yield or the production rate. As a result of the optimization, apparent quantum yields of up to 19.8% and production rates of up to 83 mu M min(-1) were obtained. We also observed a light-dependent change of the reaction order and an interdependency of the light intensity and catalyst amount, and we developed a well-fitting kinetic model for it, which might also be applied to other reactions. Furthermore, a previously unreported inactivation of the photocatalyst in the case of water oxidation is described.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据