Pt@Cu2O/WO3 composite photocatalyst for enhanced photocatalytic water oxidation performance

被引：105
作者：
Gong, Huihua [1 ]
Zhang, Yifeng [1 ]
Cao, Yue [1 ]
Luo, Maolan [1 ]
Feng, Zhicheng [2 ]
Yang, Wenbin [2 ]
Liu, Kewei [1 ]
Cao, Hongmei [1 ]
Yan, Hongjian [1 ]
机构：
[1] Sichuan Univ, Coll Chem, Chengdu 610065, Sichuan, Peoples R China
[2] Southwest Univ Sci & Technol, State Key Lab Environm Friendly Energy Mat, Chengdu 621010, Sichuan, Peoples R China
来源：
APPLIED CATALYSIS B-ENVIRONMENTAL | 2018年 / 237卷
基金：
中国国家自然科学基金;
关键词：
Composite photocatalyst; Square-like WO3; Cu2O; Photocatalytic water splitting; VISIBLE-LIGHT IRRADIATION; HYDROGEN EVOLUTION; WO3; NANOPARTICLES; FACILE SYNTHESIS; CU2O; COCATALYSTS; STABILITY; MECHANISM; G-C3N4; NANOCRYSTALS;
D O I：
10.1016/j.apcatb.2018.05.086
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
In this study, Pt@Cu2O/WO3 composite photocatalyst was constructed via coupling Cu2O onto the edged (200) and (020) facets of square-like WO3 nanoplates and followed by photodeposition of Pt onto Cu2O. The remarkably enhanced photocatalytic water oxidation activity over such assembled Pt@Cu2O/WO3 composite photocatalyst was observed. The superior photocatalytic performance can be attributed to intrinsic nature of charge separation between different facets of square-like WO3, highly efficient WO3-to-Cu2O electron transfer occurring at the intimate contact interface between WO3 and Cu2O, and Pt as reduction cocatalyst. This work will provide new deep insights into the design of crystal-based Z-scheme heterostructure photocatalysts by facet preferentially coupling one semiconductor with another.
引用
收藏
页码：309 / 317
页数：9
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