CoPtx-loaded Zn0.5Cd0.5S nanocomposites for enhanced visible light photocatalytic H2 production

被引：30
|
作者：
Wang, Hanbin [1 ]
Li, Yang [1 ]
Shu, Dan [1 ]
Chen, Xu [1 ]
Liu, Xiang [1 ]
Wang, Xina [1 ]
Zhang, Jun [1 ]
Wang, Hao [1 ]
机构：
[1] Hubei Univ, Fac Phys & Elect Sci, Hubei Collaborat Innovat Ctr Adv Organ Chem Mat, Wuhan 430062, Peoples R China
来源：
INTERNATIONAL JOURNAL OF ENERGY RESEARCH | 2016年 / 40卷 / 09期
关键词：
photocatalyst; hydrogen evolution; visible light; Zn0.5Cd0.5S; CoPt alloy; cocatalyst; HYDROGEN-PRODUCTION; WATER; EFFICIENT; NANOPARTICLES; PERFORMANCE; GENERATION; NANOSHEETS;
D O I：
10.1002/er.3522
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
Zn0.5Cd0.5S solid solution, modified with bimetallic CoPtx nanoparticles, has been prepared using a two-step organic solution method. The photocatalytic H-2 production rate of CoPtx-Zn0.5Cd0.5S nanocomposites with different composition and percentage of CoPtx was investigated. The results showed that the 1 wt% CoPt3-Zn0.5Cd0.5S sample had the best activity which was 4.7 times higher than that of pure Zn0.5Cd0.5S and 1.2 times higher than that of Pt-Zn0.5Cd0.5S for photocatalytic H-2 production. The transient photocurrent response of the Zn0.5Cd0.5S showed an obvious increase in the current density after CoPtx loading. Electrochemical impedance spectra measurements showed that the CoPtx-Zn0.5Cd0.5S nanocomposites with x = 2 and 3 had lower charge transfer resistance R-t than that of Pt-Zn0.5Cd0.5S. The enhanced catalytic properties of the CoPtx-Zn0.5Cd0.5S nanocomposites are attributed to their better accumulation ability for photoexcited electrons and higher rate for charge separation and transportation. Copyright (C) 2016 John Wiley & Sons, Ltd.
引用
收藏
页码：1280 / 1286
页数：7
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