Carbon dots（Cdots） with a broad light absorption range could be a potential stable sensitizer for TiO2,which is an excellent ultraviolet（UV） response photocatalyst. Herein, we systematically investigated the different color emissive Cdots-sensitized TiO2 for H2 production.Firstly, all kinds of Cdots enhanced the photocatalytic properties of TiO2. All the Cdots-sensitized TiO2 exhibits visible light H2 production due to their absorption in the visible light region. The photocurrent and H2 production amount display strong dependence on the light absorption range of Cdots. The blue-emissive Cdots endow the weak H2 production rate due to its weak absorption in the visible light. The enhanced photocatalytic activities are mainly contributed to the strong light absorbance and high-efficient charge separation. The light absorption of green-and red-emissive Cdots is another main factor for the high catalytic activities besides charge separation.
类型: 期刊论文
作者: Dong-Xue Yang,Dan Qu,Xiang Miao,Wen-Shuai Jiang,Li An,Yuan-Jing Wen,Dan-Dan Wu,Zai-Cheng Sun
来源: Rare Metals 2019年05期
年度: 2019
分类: 工程科技Ⅰ辑
专业: 化学,无机化工
单位: Beijing Key Laboratory for Green Catalysis and Separation,Department of Chemistry and Chemical Engineering, School of Environmental and Energy, Beijing University of Technology
基金: financially supported by the Beijing Municipal High Level Innovative Team Building Program (No. IDHT20180504),the National Natural Science Foundation of China (Nos. 21805004,21671011,21872001 and 51801006),Beijing Natural Science Foundation (No. KZ201710005002 and 2192005),the Natural Science Foundation of the Beijing Municipal Education Committee,China Postdoctoral Science Foundation (No. 2018M641133),Beijing Postdoctoral Research Foundation (No. 2018-ZZ-021),Chaoyang District Postdoctoral Research Foundation (No. 2018-ZZ-026)
分类号: O643.36;TQ116.2
页码: 404-412
总页数: 9
文件大小: 1325K
下载量: 3
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