Novel Ag3PO4/TiO2 composites for efficient decomposition of gaseous 2-propanol under visible-light irradiation

被引：160

作者：

Rawal, Sher Bahadur ^{[1
]}

Sung, Sang Do ^{[1
]}

Lee, Wan In ^{[1
]}

机构：

[1] Inha Univ, Dept Chem, Inchon 402751, South Korea

来源：

CATALYSIS COMMUNICATIONS | 2012年 / 17卷

基金：

新加坡国家研究基金会;

关键词：

Heterojunction; Photocatalyst; Visible light; Ag3PO4; Ag3PO4/TiO2; 2-propanol; PHOTOCATALYTIC ACTIVITY; HYDROTHERMAL SYNTHESIS; TIO2; DEGRADATION; SEMICONDUCTORS; OXIDATION; CDS; PHOTOCHEMISTRY; BEHAVIOR; DIOXIDE;

D O I：

10.1016/j.catcom.2011.10.034

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070305 [高分子化学与物理];

摘要：

Ag3PO4 nanoparticle of similar to 100 nm size was synthesized by an ion-exchange reaction between AgNO3 and Na3PO4 at ambient condition. The dark yellowish Ag3PO4 with a bandgap of 2.44 eV revealed significant visible-light absorption. Novel heterojunction structures of Ag3PO4/TiO2 were then fabricated by covering the surface of Ag3PO4 with polycrystalline TiO2 by sol-gel process. Under visible-light irradiation (lambda >= 420 nm). 3/97 Ag3PO4/TiO2 (in wt.% ratio) showed remarkably high photocatalytic activity in removal of gaseous 2-propanol (IP) and in evolution of CO2. Its photocatalytic behavior seemed to be caused by the inter-semiconductor hole-transfer between the valence band (VB) of Ag3PO4 and TiO2. (C) 2011 Elsevier B.V. All rights reserved.

引用

收藏

页码：131 / 135

页数：5

相关论文

共 38 条

[1]

UV-vis versus visible degradation of Acid Orange II in a coupled CdS/TiO2 semiconductors suspension [J].

Bessekhouad, Y. ;

Chaoui, N. ;

Trzpit, M. ;

Ghazzal, N. ;

Robert, D. ;

Weber, J. V. .

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY, 2006, 183 (1-2) :218-224

[2]

Facet Effect of Single-Crystalline Ag3PO4 Sub-microcrystals on Photocatalytic Properties [J].

Bi, Yingpu ;

Ouyang, Shuxin ;

Umezawa, Naoto ;

Cao, Junyu ;

Ye, Jinhua .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2011, 133 (17) :6490-6492

[3]

Self-assembly of active Bi2O3/TiO2 visible photocatalyst with ordered mesoporous structure and highly crystallized anatase [J].

Bian, Zhenfeng ;

Zhu, Jian ;

Wang, Shaohua ;

Cao, Yong ;

Qian, Xufang ;

Li, Hexing .

JOURNAL OF PHYSICAL CHEMISTRY C, 2008, 112 (16) :6258-6262

[4]

Efficient decomposition of organic compounds with FeTiO3/TiO2 heterojunction under visible light irradiation [J].

Gao, Bifen ;

Kim, Yong Joo ;

Chakraborty, Ashok Kumar ;

Lee, Wan In .

APPLIED CATALYSIS B-ENVIRONMENTAL, 2008, 83 (3-4) :202-207

[5]

Photo-catalytic degradation of methyl orange and formaldehyde by Ag/InVO4-TiO2 thin films under visible-light irradiation [J].

Ge, Lei ;

Xu, Mingxia ;

Fang, Haibo .

JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL, 2006, 258 (1-2) :68-76

[6]

Photoelectrochemical cells [J].

Grätzel, M .

NATURE, 2001, 414 (6861) :338-344

[7]

Sonochemical synthesis and visible light photocatalytic behavior of CdSe and CdSe/TiO2 nanoparticles [J].

Ho, WK ;

Yu, JC .

JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL, 2006, 247 (1-2) :268-274

[8]

ENVIRONMENTAL APPLICATIONS OF SEMICONDUCTOR PHOTOCATALYSIS [J].

HOFFMANN, MR ;

MARTIN, ST ;

CHOI, WY ;

BAHNEMANN, DW .

CHEMICAL REVIEWS, 1995, 95 (01) :69-96

[9]

Core-shell microspherical Ti1-xZrxO2 solid solution photocatalysts directly from ultrasonic spray pyrolysis [J].

Huang, Yu ;

Zheng, Zhi ;

Ai, Zhihui ;

Zhang, Lizhi ;

Fan, Xiaoxing ;

Zou, Zhigang .

JOURNAL OF PHYSICAL CHEMISTRY B, 2006, 110 (39) :19323-19328

[10]

PHOTOELECTROCATALYTIC REDUCTION OF CARBON-DIOXIDE IN AQUEOUS SUSPENSIONS OF SEMICONDUCTOR POWDERS [J].

INOUE, T ;

FUJISHIMA, A ;

KONISHI, S ;

HONDA, K .

NATURE, 1979, 277 (5698) :637-638

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