Visible-Light Photocatalytic Properties of W18O49/TiO2 and WO3/TiO2 Heterocomposites

被引：28

作者：

Rawal, Sher Bahadur ^{[1
]}

Bera, Sandipan ^{[1
]}

Lee, Wan In ^{[1
]}

机构：

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

来源：

CATALYSIS LETTERS | 2012年 / 142卷 / 12期

关键词：

Visible-light photocatalyst; W18O49/TiO2; WO3/TiO2; Heterojunction; 2-Propanol; EFFICIENT DECOMPOSITION; GASEOUS; 2-PROPANOL; OXIDATION REACTION; TITANIUM-DIOXIDE; METHYLENE-BLUE; TIO2; DEGRADATION; WATER; IRRADIATION; PHOTOCHEMISTRY;

D O I：

10.1007/s10562-012-0924-z

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：

Dark blue W18O49 nanorod (NR) with similar to 50 nm length and similar to 4 nm width was synthesized by thermally induced crystal growth process. Pale yellow WO3 NR with the same dimension was also prepared by post-annealing the as-prepared W18O49 NR at 400 A degrees C in air. The W18O49/TiO2 and WO3/TiO2 nanocomposites were then formed by coupling the corresponding NRs and TiO2 by sol-gel process. Under visible-light irradiation (lambda A a parts per thousand yenA 422 nm), the W18O49/TiO2 showed a remarkably high photocatalytic activity in removing gaseous 2-propanol (IP) and in evolving CO2. Its efficiency (6.9 ppm CO2 in 2 h) was more than twice that of the WO3/TiO2, which seems to be caused by a profound visible-light absorbance of W18O49 NR.

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页码：1482 / 1488

页数：7

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