Photocatalytic performance of α-, β-, and γ-Ga2O3 for the destruction of volatile aromatic pollutants in air
Photocatalytic performance of α-, β-, and γ-Ga2O3 for the destruction of volatile aromatic pollutants in air
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α-、β-和γ-Ga2O3 光催化破坏空气中挥发性芳香污染物的性能
DOI：
10.1016/j.jcat.2007.05.012
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发表时间：
2007-08-15
影响因子：
7.3
通讯作者：
Fu, Xianzhi
中科院分区：
文献类型：
--
作者：
Hou, Yidong;Wu, Ling;Fu, Xianzhi
制备了三种多晶型的Ga 2 O3（α-、β-和γ-Ga 2 O3），并通过挥发性芳香族化合物（例如，苯、甲苯和甲苯）在干燥空气流中在室温下在UV光照射下进行。结果表明，Ga 2 O3催化剂的光催化活性明显高于商品TiO 2。不同晶型的Ga 2 O3的光催化活性受其晶体结构的影响较大，其比活性依次为：β-Ga 2 O3> α-Ga 2 O3> γ-Ga 2 O3。的Ga 2 O3多晶型物的光催化活性的差异的原因进行了讨论的结晶度，几何结构，和多晶型物的电子性质。(c)2007爱思唯尔公司All rights reserved.
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.