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：

070304 ; 081704 ;

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

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