Novel Ag/AgCl/K6Nb10.8O30 photocatalyst and its enhanced visible light photocatalytic activities for the degradation of microcystin-LR and acid red G

被引：20

作者：

Zou, Xi ^{[1
,2
]}

Wan, Zhen ^{[3
]}

Wan, Chengyan ^{[1
,2
]}

Zhang, Gaoke ^{[3
]}

Pan, Xiaojie ^{[1
,2
]}

Peng, Jianhua ^{[1
,2
]}

Chang, Jianbo ^{[1
,2
]}

机构：

[1] Minist Water Resources, Inst Hydroecol, Key Lab Ecol Impacts Hydraul Projects & Restorat, Wuhan 430079, Peoples R China

[2] Chinese Acad Sci, Wuhan 430079, Peoples R China

[3] Wuhan Univ Technol, Sch Resources & Environm Engn, Wuhan 430070, Peoples R China

来源：

JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL | 2016年 / 411卷

基金：

中国国家自然科学基金;

关键词：

Heterostructures; Ag/AgCl/K6Nb10.8O30; composites; Microcystin-LR; Acid red G; Visible light irradiation; CONTROLLED HYDROTHERMAL SYNTHESIS; Z-SCHEME PHOTOCATALYST; COMPOSITE; TIO2; PERFORMANCE; MECHANISM; NANOCOMPOSITES; EFFICIENCY; REMOVAL; BIVO4;

D O I：

10.1016/j.molcata.2015.11.009

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：

Novel visible-light response Ag/AgCl/K6Nb10.8O30 composites were synthesized using a wet chemical route and a precipitation-photoreduction method. The as-prepared catalysts were characterized by field emission scanning electron microscopy (FE-SEM), transmission electron microscopy (TEM), energy-dispersive X-ray spectro-scope (EDS), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), UV-vis diffuse reflectance spectroscopy (DRS), surface photovoltage spectroscopy (SPS) and Nexus Fourier transform infrared (FT-IR) spectroscopy. The TEM result determined the formation of Ag/AgCl/K6Nb10.8O30. The visible-light photocatalytic activity the as-prepared Ag/AgCl/K6Nb10.8O30 composites was evaluated by the degradation of microcystin-LR and ARG aqueous solution. The as-prepared Ag/AgCl/K6Nb10.8O30 composites exhibited excellent photocatalytic activities for the degradation of microcystin-LR and ARG aqueous solution under visible light irradiation, which results from the excellent photo-response of Ag NPs in the visible light region and the efficiently separation of photo-induced carriers caused by the heterostructures. The O-2(center dot-) and h(+) were confirmed to be the main active species in the photocatalytic process and the as-prepared composites remained good stability under visible light irradiation. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：364 / 371

页数：8

共 51 条

[1] In situ oxidation synthesis of Ag/AgCl core-shell nanowires and their photocatalytic properties [J].