Hierarchical flower-like SnSe2 supported Ag3PO4 nanoparticles: Towards visible light driven photocatalyst with enhanced performance

被引：157
作者：
Tan, Pengfei [1 ]
Chen, Xi [1 ]
Wu, Laidi [1 ]
Shang, Yan Yang [1 ]
Liu, Wenwen [1 ]
Pan, Jun [1 ]
Xiong, Xiang [1 ]
机构：
[1] Cent S Univ, State Key Lab Powder Met, Changsha 410083, Hunan, Peoples R China
来源：
APPLIED CATALYSIS B-ENVIRONMENTAL | 2017年 / 202卷
基金：
美国国家科学基金会; 中国国家自然科学基金;
关键词：
Ag3PO4; SnSe2; Ag3PO4/SnSe2; composite; Visible light; Z-scheme; Photocatalyst; INDOOR WEAK LIGHT; Z-SCHEME; HETEROJUNCTION PHOTOCATALYST; NANOCOMPOSITE PHOTOCATALYST; PHENOL DEGRADATION; FACILE FABRICATION; COMPOSITE; HETEROSTRUCTURES; STABILITY; IRRADIATION;
D O I：
10.1016/j.apcatb.2016.09.033
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 novel three-dimensional (3D) hierarchical flower-like Ag3PO4/SnSe2 composite photocatalyst was successfully prepared via an in situ precipitation method. The composition, microstructure and optical properties of the Ag3PO4/SnSe2 composites were thoroughly investigated. Nano-sized Ag3PO4 particles were uniformly dispersed on the surface of 3D flower-like SnSe2. The obtained Ag3PO4/SnSe2 composites presented enhanced performance for photocatalytic degradation of Rhodamine B (RhB) compared with pure Ag3PO4 and SnSe2 under visible light irradiation. The Ag3PO4/SnSe2-6 composite exhibited the optimal efficiency for photocatalytic decomposition of RhB, approximately 4.2 and 26 times higher than those of pure Ag3PO4 and SnSe2. Significantly, the superior stability was also observed after four cycles. The enhanced performance of the Ag3PO4/SnSe2 composites under visible light was ascribed to a synergistic effect including the matched energy band structures, increased light harvesting and boosted separation efficiency of photo-generated carriers. A possible photocatalytic mechanism of the composite was also discussed. (C) 2016 Elsevier B.V. All rights reserved.
引用
收藏
页码：326 / 334
页数：9
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