Facile synthesis of anatase/rutile TiO2/g-C3N4 multi-heterostructure for efficient photocatalytic overall water splitting

被引：71

作者：

Fang, Yuxuan ^{[1
]}

Huang, Wenxin ^{[2
]}

Yang, Siyuan ^{[1
]}

Zhou, Xunfu ^{[1
]}

Ge, Chunyu ^{[3
]}

Gao, Qiongzhi ^{[1
]}

Fang, Yueping ^{[1
]}

Zhang, Shengsen ^{[1
]}

机构：

[1] South China Agr Univ, Minist Educ, Coll Mat & Energy, Key Lab Biobased Mat & Energy, 483 Wushan Rd, Guangzhou 510642, Peoples R China

[2] EPA, Environmetal Protect Montoring Stn, Shantou 515041, Peoples R China

[3] South China Agr Univ, Ctr Expt Teaching Common Basic Courses, 483 Wushan Rd, Guangzhou 510642, Peoples R China

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2020年 / 45卷 / 35期

基金：

中国国家自然科学基金;

关键词：

Photocatalytic water splitting; Multi-heterostructure; Anatase/rutile TiO2; g-C3N4; GRAPHITIC CARBON NITRIDE; HYDROGEN EVOLUTION; Z-SCHEME; G-C3N4; NANOPARTICLES; PERFORMANCE; COCATALYST; COMPOSITE; NANOCOMPOSITES; INHIBITION;

D O I：

10.1016/j.ijhydene.2020.04.214

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：

Rational design of high-efficiency heterostructure photocatalyst is an effective strategy to realize photocatalytic H-2 evolution from pure water, but remains still a considerable challenge. Herein, an anatase/rutile TiO2/g-C3N4 (A/R/CN) multi-heterostructure photocatalyst was prepared by a facile thermoset hybrid method. The combination of two type-II semiconductor heterostructures (i.e., A/R and R/CN) significantly improve the separation and transfer efficiency of photogenerated carriers of anatase TiO2, rutile TiO2 and g-C3N4, and A/R/CN photocatalyst with high activity is obtained. The optimal A/R/CN photocatalyst exhibits significantly increased photocatalytic overall water splitting activity with a rate of H-2 evolution of 374.2 mu mol g(-1) h(-1), which is about 8 and 4 times that of pure g-C3N4 and P25. Moreover, it is demonstrated to be stable and retained a high activity (ca. 91.2%) after the fourth recycling experiment. This work comes up with an innovative perspective on the construction of multi-heterostructure interfaces to improve the overall photocatalytic water splitting performance. (C) 2020 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.

引用

页码：17378 / 17387

页数：10

共 57 条

[1] Review on photocatalytic conversion of carbon dioxide to value-added compounds and renewable fuels by graphitic carbon nitride-based photocatalysts [J].