A facile fabrication of plasmonic g-C3N4/Ag2WO4/Ag ternary heterojunction visible-light photocatalyst

被引：77
作者：
Dai, Kai [1 ]
Lv, Jiali [1 ]
Lu, Luhua [2 ]
Liang, Changhao [1 ,3 ,4 ]
Geng, Lei [1 ]
Zhu, Guangping [1 ]
机构：
[1] Huaibei Normal Univ, Coll Phys & Elect Informat, Huaibei 235000, Peoples R China
[2] China Univ Geosci, Fac Chem Engn & Mat Sci, Wuhan 430074, Peoples R China
[3] Chinese Acad Sci, Hefei Inst Phys Sci, Inst Solid State Phys, Key Lab Mat Phys, Hefei 230031, Peoples R China
[4] Chinese Acad Sci, Hefei Inst Phys Sci, Inst Solid State Phys, Anhui Key Lab Nanomat & Nanotechnol, Hefei 230031, Peoples R China
来源：
MATERIALS CHEMISTRY AND PHYSICS | 2016年 / 177卷
基金：
中国国家自然科学基金;
关键词：
Composite materials; Chemical synthesis; Electron microscopy; Crystal structure; IN-SITU SYNTHESIS; AG-BASED PHOTOCATALYST; COMPOSITE PHOTOCATALYSTS; HYDROGEN-PRODUCTION; DRINKING-WATER; SOLAR; TIO2; NANOPARTICLES; CONVERSION; G-C3N4;
D O I：
10.1016/j.matchemphys.2016.04.065
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
It's important to reduce recombination of electrons and holes and enhance charge transfer through fine controlled interfacial structure. In this work, novel graphitic-C3N4 (g-C3N4)/Ag2WO4/Ag ternary photo catalyst has been synthesized by deposition of Ag2WO4 onto g-C3N4 template and followed by sun light reduction of Ag2WO4 into Ag2WO4/Ag. As-prepared g-C3N4/Ag2WO4/Ag presented significantly enhanced photocatalytic performance in degrading methylene blue (MB) under 410 nm LED light irradiation. Metallic Ag-o is used as plasmonic hot spots to generate high energy charge carriers. Optimal g-C3N4 content has been confirmed to be 40 wt%, corresponding to apparent pseudo-first-order rate constant kapp of 0.0298 min(-1), which is 3.3 times and 37.3 times more than that of pure g-C3N4 and Ag2WO4, respectively. This novel ternary g-C3N4/Ag2WO4/Ag structure material is an ideal candidate in environmental treatment and purifying applications. (C) 2016 Elsevier B.V. All rights reserved.
引用
收藏
页码：529 / 537
页数：9
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