RGO/Ag2S/TiO2 ternary heterojunctions with highly enhanced UV-NIR photocatalytic activity and stability

被引：120
作者：
Liu, Tongyao [1 ,2 ]
Liu, Bin [1 ,2 ]
Yang, Linfen [1 ,2 ]
Ma, Xinlong [2 ]
Li, Hao [1 ,2 ]
Yin, Shu [3 ]
Sato, Tsugio [3 ]
Sekino, Tohru [4 ]
Wang, Yuhua [1 ,2 ]
机构：
[1] Lanzhou Univ, Sch Phys Sci & Technol, Dept Mat Sci, Lanzhou 730000, Peoples R China
[2] Minist Educ, Key Lab Special Funct Mat & Struct Design, Beijing, Peoples R China
[3] Tohoku Univ, Inst Multidisciplinary Res Adv Mat, Aoba Ku, 2-1-1 Katahira, Sendai, Miyagi, Japan
[4] Osaka Univ, Inst Sci & Ind Res, Suita, Osaka 565, Japan
来源：
APPLIED CATALYSIS B-ENVIRONMENTAL | 2017年 / 204卷
关键词：
Photocatalysis; UV-NIR light; Heterostructures; Stability; NEAR-INFRARED PHOTOCATALYSIS; PHOTO-FENTON REACTION; TIO2 NANOTUBE ARRAY; VISIBLE-LIGHT; HYDROGEN-PRODUCTION; HETEROSTRUCTURE PHOTOCATALYST; NANOBELT HETEROSTRUCTURES; COMPOSITE PHOTOCATALYST; SURFACE MODIFICATION; LITHIUM STORAGE;
D O I：
10.1016/j.apcatb.2016.12.011
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：
A series of novel RGO/Ag2S/TiO2 heterostructure photocatalysts has been synthesized successfully by a facial hydrothermal and simple ionexchange method. During the preparation, the reduction of graphene oxide (GO) and growth of TiO2 and Ag2S are accomplished smoothly, and the functions of each part are developed well together. Compared with pure TiO2, Ag2S and Ag2S/TiO2 nanocomposite, the obtained 3 wt.% RGO/Ag2S/TiO2 nanocomposite exhibits a significant enhancement of ultraviolet (UV) and near-infrared (NIR) light photocatalytic activities. Owing to its extended photoresponsive range, great adsorptive property and efficient electron-hole separation capacity. Furthermore, benefited by the introduction of reduced graphite oxide (RGO), the deterioration of Ag2S is inhibited well and the stability of RGO/Ag2S/TiO2 nanocomposite has been enhanced greatly. (C) 2016 Elsevier B.V. All rights reserved.
引用
收藏
页码：593 / 601
页数：9
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