光催化
材料科学
复合数
石墨氮化碳
催化作用
分解水
化学工程
制氢
化学
复合材料
有机化学
工程类
作者
Feifei Mei,Zhen Li,Kai Dai,Jinfeng Zhang,Changhao Liang
出处
期刊:Chinese Journal of Catalysis
[China Science Publishing & Media Ltd.]
日期:2020-01-01
卷期号:41 (1): 41-49
被引量:262
标识
DOI:10.1016/s1872-2067(19)63389-9
摘要
In recent years, environmental pollution and energy crisis have become increasingly serious issues owing to the burning of fossil fuels. Among the many technologies, decomposition of water to produce hydrogen has attracted much attention because of its sustainability and non-polluting characteristic. However, highly efficient decomposition of water that is driven by visible light is still a challenge. Herein, we report the large-scale preparation of step-scheme porous graphite carbon nitride/Zn0.2Cd0.8S-diethylenetriamine (Pg-C3N4/Zn0.2Cd0.8S-DETA) composite by a facile solvothermal method. It was found by UV-vis spectroscopy that 15%Pg-C3N4/Zn0.2Cd0.8S-DETA exhibited suitable visible absorption edge and band gap for water decomposition. The hydrogen production rate of 15%Pg-C3N4/Zn0.2Cd0.8S-DETA composite was 6.69 mmol g−1 h−1, which was 16.73, 1.61, and 1.44 times greater than those of Pg-C3N4, CdS-DETA, and Zn0.2Cd0.8S-DETA, respectively. In addition, 15%Pg-C3N4/Zn0.2Cd0.8S-DETA composite displayed excellent photocatalytic stability, which was maintained for seven cycles of photocatalytic water splitting test. We believe that 15%Pg-C3N4/Zn0.2Cd0.8S-DETA composite can be a valuable guide for the development of solar hydrogen production applications in the near future.
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