Two-dimensional heterojunction photocatalysts constructed by graphite-like C3N4 and Bi2WO6 nanosheets: Enhanced photocatalytic activities for water purification

被引：103

作者：

Chen, Fen ^{[1
]}

Li, Di ^{[2
]}

Luo, Bifu ^{[1
]}

Chen, Min ^{[1
]}

Shi, Weidong ^{[1
]}

机构：

[1] Jiangsu Univ, Sch Chem & Chem Engn, Zhenjiang 212013, Peoples R China

[2] Jiangsu Univ, Inst Energy Res, Zhenjiang 212013, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2017年 / 694卷

基金：

中国博士后科学基金; 中国国家自然科学基金;

关键词：

Two-dimensional; g-C3N4; Visible-light photocatalytic; Water purification; Electron transfer; VISIBLE-LIGHT EFFICIENCY; COMPOSITE PHOTOCATALYSTS; HYDROGEN-PRODUCTION; MECHANISM INSIGHT; METHYL-ORANGE; DEGRADATION; POLLUTANTS; POLLUTION; TIO2; HETEROSTRUCTURES;

D O I：

10.1016/j.jallcom.2016.09.326

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：

Two-dimensional g-c(3)N(4)/Bi2WO6 heterojunction photocatalysts have been successfully synthesized by a multi-step method. Based on the structure and morphology characterization, the as-prepared photo-catalysts exhibited a nanosheet/nanosheet hybrid structure, which could provide a large heterogeneous surface area, increase the transmission route of photo-induced carriers and then suppress the charge recombination. To investigate the practical photocatalytic performance for water purification of these heterojunction photocatalysts, organic dyes such as Rhodamine B (RhB) and antibiotics including tetracycline (TC) and ciprofloxacin (CIP) have been selected as the target pollution under visible-light irradiation. The optimum photocatalyst (the weight ratio of g-C3N4 to Bi2WO6 is 1:0.67) was more than three times and two times than pure g-C3N4 and Bi2WO6, respectively. The enhanced photocatalytic activities of g-C3N4/Bi2WO6 heterojunction photocatalysts might be ascribed to the two-dimensional structure. In combination of the experiment results, the possible photo-induced charge transfer route has been detailed illustrated. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：193 / 200

页数：8

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