Nitrogen-doped graphene modified AgX@Ag (X = Br, Cl) composites with improved visible light photocatalytic activity and stability

被引:33
作者
Dong, Chao [1 ]
Wu, Kong-Lin [1 ]
Wei, Xian-Wen [1 ]
Wang, Jing [1 ]
Liu, Li [1 ]
Jiang, Bin-Bin [2 ]
机构
[1] Anhui Normal Univ, Anhui Key Lab Funct Mol Solids, Anhui Lab Mol Based Mat, Coll Chem & Mat Sci,Key Lab Funct Mol Solids,Mini, Wuhu 241000, Peoples R China
[2] Anhui Univ Technol, Sch Chem & Engn, Maanshan 243002, Peoples R China
基金
中国国家自然科学基金;
关键词
Nitrogen-doped graphene; AgX@Ag; Composites; Visible-light plasmonic photocatalyst; Catalytic properties; HIGHLY EFFICIENT; FACILE SYNTHESIS; PLASMONIC PHOTOCATALYST; SELECTIVE OXIDATION; ASSISTED SYNTHESIS; PERFORMANCE; NANOCOMPOSITE; OXIDE; NANOPARTICLES; FABRICATION;
D O I
10.1016/j.apcata.2014.09.025
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
Nitrogen-doped graphene modified AgX@Ag (NG-AgX@Ag, X = Br, Cl) composites were prepared by a simple co-precipitation method under ambient condition. The composites possessed higher photocatalytic activity than corresponding bare AgX@Ag and TiO2-AgX@Ag towards degradation of rhodamine B (RhB) aqueous solution under visible light irradiation, which can be ascribed to the corporative effects of more light harvest, enhanced adsorption capacity and more efficient separation of photogenerated electron-hole pairs after integrated with nitrogen-doped graphene. The NG-AgX@Ag (X = Br, Cl) composites exhibited efficiencies of 86% and 89% for photodegradation of RhB, which were about 2 times and 1.8 times of corresponding bare AgX@Ag (X = Br, Cl), respectively. The composites also had a relatively high stability. (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码:11 / 18
页数:8
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