Development of a new efficient visible-light-driven photocatalyst from SnS2 and polyvinyl chloride

被引：205

作者：

Zhang, Yongcai ^{[1
]}

Zhang, Fen ^{[1
]}

Yang, Zhanjun ^{[1
]}

Xue, Huaiguo ^{[1
]}

Dionysiou, Dionysios D. ^{[2
]}

机构：

[1] Yangzhou Univ, Jiangsu Key Lab Environm Mat & Environm Engn, Sch Chem & Chem Engn, Yangzhou 225009, Jiangsu, Peoples R China

[2] Univ Cincinnati, Environm Engn & Sci Program, Dept Biomed Chem & Environm Engn, Engn Res Ctr 705, Cincinnati, OH 45221 USA

来源：

JOURNAL OF CATALYSIS | 2016年 / 344卷

基金：

中国国家自然科学基金;

关键词：

Tin disulfide; Polyvinyl chloride; Nanocomposites; Photoelectrochemical properties; Photocatalysis; Cr(VI) reduction; EXPOSED; 001; FACETS; SOLVOTHERMAL SYNTHESIS; HIGH-PERFORMANCE; GRAPHENE OXIDE; HYDROGEN-PRODUCTION; QUANTUM DOTS; HETEROJUNCTION PHOTOCATALYSTS; HYDROTHERMAL SYNTHESIS; FACILE FABRICATION; AQUEOUS CR(VI);

D O I：

10.1016/j.jcat.2016.10.022

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：

This work reports the development of a new efficient visible-light-driven composite photocatalyst comprising SnS2 nanoflakes and conjugated polymer (CPVC) from the dehydrochlorination of polyvinyl chloride (PVC). The optimum synthesis conditions were explored to obtain the most efficient SnS2/CPVC composite photocatalyst. The formation of SnS2/CPVC nanocomposites was confirmed by X-ray diffraction, X-ray photoelectron spectroscopy, Raman spectroscopy, high-resolution transmission electron microscopy, and elemental mapping characterization. The photocatalytic tests demonstrated that SnS2/CPVC nanocomposites exhibited not only far higher visible-light-driven photocatalytic activity than SnS2 nanoflakes, but also good photocatalytic stability and reusability in the reduction of aqueous Cr (VI) under visible-light (lambda > 420 nm) irradiation. The mechanism underlying the improved photocatalytic efficiency of SnS2/CPVC nanocomposites was elucidated, based on comparison between the optical, photoelectric, and electrochemical properties of SnS2/CPVC nanocomposites and SnS2 nanoflakes, as well as the matched electronic band structures between SnS2 and CPVC. (C) 2016 Elsevier Inc. All rights reserved.

引用

页码：692 / 700

页数：9

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