Ferrites boosting photocatalytic hydrogen evolution over graphitic carbon nitride: a case study of (Co, Ni)Fe2O4 modification
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- 作者：Jie Chen ; Daming Zhao ; Zhidan Diao ; Miao Wang ; Shaohua Shen
- 关键词：Graphitic carbon nitride ; Ferrites ; Photocatalytic water splitting ; Solar hydrogen conversion
- 刊名：Chinese Science Bulletin
- 出版年：2016
- 出版时间：February 2016
- 年：2016
- 卷：61
- 期：4
- 页码：292-301
- 全文大小：3,067 KB
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Daming Zhao (1)
Zhidan Diao (1)
Miao Wang (1)
Shaohua Shen (1)
1. International Research Center for Renewable Energy, State Key Laboratory of Multiphase Flow in Power Engineering, Xi’an Jiaotong University, Xi’an, 710049, China - 刊物主题：Science, general; Life Sciences, general; Physics, general; Chemistry/Food Science, general; Earth Sciences, general; Engineering, general;
- 出版者：Springer Berlin Heidelberg
- ISSN：1861-9541
文摘
The charge carrier separation and surface catalytic redox reactions are of primary importance as elementary steps in photocatalytic hydrogen evolution. In this study, both of these two processes in photocatalytic hydrogen evolution over graphitic carbon nitride (g-C3N4) were greatly promoted with the earth-abundant ferrites (Co, Ni)Fe2O4 modification. CoFe2O4 was further demonstrated to be a better modifier for g-C3N4 as compared to NiFe2O4, due to the more efficient charge carrier transfer as well as superior surface oxidative catalytic activity. When together loading CoFe2O4 and reductive hydrogen production electrocatalyst Pt onto g-C3N4, the obtained Pt/g-C3N4/CoFe2O4 photocatalyst achieved visible-light (λ > 420 nm) hydrogen production rate 3.5 times as high as Pt/g-C3N4, with the apparent quantum yield reaching 3.35 % at 420 nm. Keywords Graphitic carbon nitride Ferrites Photocatalytic water splitting Solar hydrogen conversion