Fabrication and assembly of two-dimensional TiO2/WO3•H2O heterostructures with type II band alignment for enhanced photocatalytic performance

被引：37

作者：

Xu, Tao ^{[1
]}

Wang, Yun ^{[2
,3
]}

Zhou, Xiaofang ^{[1
]}

Zheng, Xiaoli ^{[1
]}

Xu, Qun ^{[1
]}

Chen, Zhimin ^{[1
]}

Ren, Yumei ^{[1
]}

Yan, Bo ^{[1
]}

机构：

[1] Zhengzhou Univ, Coll Mat Sci & Engn, Zhengzhou 450052, Peoples R China

[2] Griffith Univ, Ctr Clean Environm & Energy, Gold Coast, Qld 4222, Australia

[3] Griffith Univ, Griffith Sch Environm, Gold Coast, Qld 4222, Australia

来源：

APPLIED SURFACE SCIENCE | 2017年 / 403卷

基金：

中国国家自然科学基金;

关键词：

2D heterostructures; Type II band alignment; WO3 center dot H2O; TiO2; Supercritical CO2; HYDROTHERMAL SYNTHESIS; H-2; EVOLUTION; NANOSHEETS; GRAPHENE; MICROSPHERES; WO3; WS2;

D O I：

10.1016/j.apsusc.2017.01.242

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：

The recombination of photo-induced charges is one of the main issues to limit the large-scale applications in photocatalysis and photoelectrocatalysis. To improve the charge separation, we fabricate a novel type II 2D ultrathin TiO2/WO3 center dot H2O heterostructures with the assistance of supercritical CO2 (SC CO2) in this work. The as-fabricated heterostructures possess high photocatalytic activity for the degradation of methyl orange(MO) and high photocurrent response under simulated solar light (AM 1.5). For the TiO2/WO3 center dot H2O heterostructures, the MO solution could be degraded by 95.5% in 150 min, and the photocurrent density reaches to 6.5 mu A cm(-2), exhibiting a significant enhancement compared with pure TiO2 and WO3 center dot H2O nanosheets. (C) 2017 Elsevier B.V. All rights reserved.

引用

页码：564 / 571

页数：8

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