Improvement of visible light photocatalytic acetaldehyde decomposition of bismuth vanadate/silica nanocomposites by cocatalyst loading

被引：24

作者：

Murakami, Naoya ^{[1
]}

Takebe, Naohiro ^{[1
]}

Tsubota, Toshiki ^{[1
]}

Ohno, Teruhisa ^{[1
]}

机构：

[1] Kyushu Inst Technol, Dept Appl Chem, Fac Engn, 1-1 Sensuicho, Kitakyushu, Fukuoka 8048550, Japan

来源：

JOURNAL OF HAZARDOUS MATERIALS | 2012年 / 211卷

关键词：

Visible-light responsive photocatalyst; Bismuth vanadate; Silica; Reduction cocatalyst; BIVO4; MECHANISM; DRIVEN; WATER; DEGRADATION; TEMPERATURE; PARTICLES; OXIDES; O-2;

D O I：

10.1016/j.jhazmat.2011.12.038

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Photocatalytic activity of bismuth vanadate (BiVO4) for acetaldehyde decomposition under visible light irradiation was improved by inclusion of a nanocomposition of silica as an adsorbent material and loading of platinum (Pt) or trivalent iron ion (Fe3+) as reduction cocatalysts. Addition of silica enhanced photocatalytic activity due to improvement of adsorption ability, but total decomposition of acetaldehyde was not observed within 24 h of visible light irradiation. For further improvement of photocatalytic activity, BiVO4 with an optimized amount of silica composition were modified with Pt or Fe3+. Photodeposition of Pt greatly increased photocatalytic activity, and acetaldehyde was totally decomposed within 24 h of visible light irradiation. (c) 2011 Elsevier B.V. All rights reserved.

引用

页码：83 / 87

页数：5

共 23 条

[1] Pristine simple oxides as visible light driven photocatalysts: Highly efficient decomposition of organic compounds over platinum-loaded tungsten oxide [J].