Photocatalytic performance of alpha-, beta-, and gamma-Ga2O3 for the destruction of volatile aromatic pollutants in air | Health & Environmental Research Online (HERO)

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HERO ID

6949952

Reference Type

Journal Article

Title

Photocatalytic performance of alpha-, beta-, and gamma-Ga2O3 for the destruction of volatile aromatic pollutants in air

Author(s)

Hou, Y; Wu, L; Wang, X; Ding, Z; Li, Z; Fu, X; ,

Year

2007

Is Peer Reviewed?

Yes

Journal

Journal of Catalysis
ISSN: 0021-9517
EISSN: 1090-2694

Publisher

ACADEMIC PRESS INC ELSEVIER SCIENCE

Location

SAN DIEGO

Volume

250

Issue

Page Numbers

12-18

Language

English

DOI

10.1016/j.jcat.2007.05.012

Web of Science Id

WOS:000249104000002

URL

https://www.scopus.com/inward/record.uri?eid=2-s2.0-34447645968&doi=10.1016%2fj.jcat.2007.05.012&partnerID=40&md5=6e730e6e1185b5db26d463dd10a7cfbe
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Abstract

Three polymorphs of Ga2O3 (alpha-, beta-, and gamma-Ga2O3) were prepared, and their photocatalytic activities were evaluated by the decomposition of volatile aromatic compounds (e.g., benzene, toluene, and ethylbenzene) in dry air stream under UV light illumination at room temperature. It was found that the Ga2O3 catalysts exhibited much higher photocatalytic activity than commercial TiO2. The photocatalytic activities of the Ga2O3 polymorphs were strongly influenced by their crystal structure, and their specific activities decreased in the following order: beta-Ga2O3 > alpha-Ga2O3 > gamma-Ga2O3. The reasons for the differences in photocatalytic activity of the Ga203 polymorphs are discussed in terms of crystallinity, geometric structure, and electronic properties of the polymorphs. (c) 2007 Elsevier Inc. All rights reserved.