A comparative study on the photocatalytic activities of two visible-light plasmonic photocatalysts: AgCl-SmVO4 and AgI-SmVO4 composites

被引：38

作者：

Dong, Lvzhuo ^{[1
]}

He, Yiming ^{[2
]}

Li, Tingting ^{[1
]}

Cai, Jun ^{[2
]}

Hu, Wenda ^{[2
]}

Wang, Sisi ^{[2
]}

Lin, Hongjun ^{[3
]}

Luo, Mengfei ^{[1
]}

Yi, Xiaodong ^{[4
]}

Zhao, Leihong ^{[1
]}

Weng, Weizheng ^{[4
]}

Wan, Huilin ^{[4
]}

机构：

[1] Zhejiang Normal Univ, Inst Phys Chem, Zhejiang Key Lab React Chem Solid Surfaces, Jinhua 321004, Peoples R China

[2] Zhejiang Normal Univ, Dept Mat Phys, Jinhua 321004, Peoples R China

[3] Zhejiang Normal Univ, Coll Geog & Environm Sci, Jinhua 321004, Peoples R China

[4] Xiamen Univ, State Key Lab Phys Chem Solid Surfaces, Xiamen 361005, Peoples R China

来源：

APPLIED CATALYSIS A-GENERAL | 2014年 / 472卷

基金：

中国国家自然科学基金;

关键词：

Photocatalysis; AgI-SmVO4; AgCl-SmVO4; Visible light; Composite; AG-AT-AGCL; HIGHLY EFFICIENT; DEGRADATION; NANOPARTICLES; ROLES; XPS; BR;

D O I：

10.1016/j.apcata.2013.12.017

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：

Two novel plasmonic photocatalysts, AgCl-SmVO4 and AgI-SmVO4 composites, were prepared in this study. The two photocatalysts were characterized by X-ray diffraction, X-ray photoelectron spectroscopy, scanning electron microscopy, transmission electron microscopy, and UV-vis diffuse reflectance spectroscopy. The results showed that the prepared samples have a similar phase composition. The two photocatalysts both consist of SmVO4, AgX (X= Cl, I), and Ag. However, their photocatalytic activities varied significantly. The photocatalytic testing result showed that the AgI-SmVO4 hybrid exhibited a photocatalytic activity approximately three times higher than that of AgCl-SmVO4 in the photodegradation of rhodamine B under visible-light illumination. In addition to the strong adsorption ability for dyes, the suitable band potential of AgI and SmVO4 was considered as another important reason for the higher photocatalytic activity of AgI-SmVO4. It was suggested that this excellent property would lead to a high separation efficiency of electron-hole pairs, improving the photocatalytic activity. This speculation was further verified by the photocurrent-time and active species trapping measurements. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：143 / 151

页数：9

共 40 条

[1] Photocatalytic reduction of CO2 to hydrocarbons using AgBr/TiO2 nanocomposites under visible light [J].

Abou Asi, Mudar ;

He, Chun ;

Su, Minhua ;

Xia, Dehua ;

Lin, Long ;

Deng, Huiqi ;

Xiong, Ya ;

Qiu, Rongliang ;

Li, Xiang-zhong .

CATALYSIS TODAY, 2011, 175 (01) :256-263

[2] A plasmonic photocatalyst consisting of sliver nanoparticles embedded in titanium dioxide [J].

Awazu, Koichi ;

Fujimaki, Makoto ;

Rockstuhl, Carsten ;

Tominaga, Junji ;

Murakami, Hirotaka ;

Ohki, Yoshimichi ;

Yoshida, Naoya ;

Watanabe, Toshiya .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2008, 130 (05) :1676-1680

[3] XPS studies for vanadium pentoxide along the catalytic bed:: oxidative dehydrogenation of propane [J].

Barbero, BP ;

Cadús, LE ;

Hilaire, L .

APPLIED CATALYSIS A-GENERAL, 2003, 246 (02) :237-242

[4] Preparation, characterization and visible-light photocatalytic activity of AgI/AgCl/TiO2 [J].

Cao, Jing ;

Xu, Benyan ;

Luo, Bangde ;

Lin, Haili ;

Chen, Shifu .

APPLIED SURFACE SCIENCE, 2011, 257 (16) :7083-7089

[5]

Fujishima A., 2000, J PHOTOCH PHOTOBIO C, V1, P1, DOI DOI 10.1016/S1389-5567(00)00002-2

[6] Plasmon-Induced Photodegradation of Toxic Pollutants with Ag-Agl/Al2O3 under Visible-Light Irradiation [J].

Hu, Chun ;

Peng, Tianwei ;

Hu, Xuexiang ;

Nie, Yulun ;

Zhou, Xuefeng ;

Qu, Jiuhui ;

He, Hong .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2010, 132 (02) :857-862

[7] Tuning metal@metal salt photocatalytic abilities by different charged anions [J].

Huang, Hui ;

Li, Xiaorui ;

Kang, Zhenhui ;

Liu, Yang ;

Li, Haitao ;

He, Xiaodie ;

Lian, Suoyuan ;

Liu, Jinglin ;

Lee, Shuit-Tong .

DALTON TRANSACTIONS, 2010, 39 (44) :10593-10597

[8] Tuning the Relative Concentration Ratio of Bulk Defects to Surface Defects in TiO2 Nanocrystals Leads to High Photocatalytic Efficiency [J].

Kong, Ming ;

Li, Yuanzhi ;

Chen, Xiong ;

Tian, Tingting ;

Fang, Pengfei ;

Zheng, Feng ;

Zhao, Xiujian .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2011, 133 (41) :16414-16417

[9] Preparation, characterization, photoactivity and XPS studies of Ln2ZrTiO7 (Ln = Sm and Nd) [J].

Kumar, B. Vijaya ;

Velchuri, Radha ;

Prasad, G. ;

Sreedhar, B. ;

Ravikumar, K. ;

Vithal, M. .

CERAMICS INTERNATIONAL, 2010, 36 (04) :1347-1355

[10] Degradation of Acid Orange 7 using magnetic AgBr under visible light: The roles of oxidizing species [J].

Li, Guoting ;

Wong, K. H. ;

Zhang, Xiwang ;

Hu, Chun ;

Yu, Jimmy C. ;

Chan, R. C. Y. ;

Wong, P. K. .

CHEMOSPHERE, 2009, 76 (09) :1185-1191

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