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Photocatalytic performance of α-, β-, and γ-Ga2O3 for the destruction of volatile aromatic pollutants in air by Yidong Hou; Ling Wu; Xinchen Wang; Zhengxin Ding; Zhaohui Li; Xianzhi Fu is a Materials Science article available to read on EtoBox.

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Three polymorphs of Ga 2 O 3 (α-, β-, and γ -Ga 2 O 3 ) 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 Ga 2 O 3 catalysts exhibited much higher photocatalytic activity than commercial TiO 2 . The photocatalytic activities of the Ga 2 O 3 polymorphs were strongly influenced by their crystal structure, and their specific activities decreased in the following order: The reasons for the differences in photocatalytic activity of the Ga 2 O 3 polymorphs are discussed in terms of crystallinity, geometric structure, and electronic properties of the polymorphs.

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Author

Yidong Hou; Ling Wu; Xinchen Wang; Zhengxin Ding; Zhaohui Li; Xianzhi Fu

Publisher

Elsevier Science; Elsevier ; Elsevier Inc.; Elsevier BV (ISSN 0021-9517)

Published

2007

Language

EN

Field

Materials Science (Physical Sciences)