Efficient photocatalytic degradation of volatile organic compounds by porous indium hydroxide nanocrystals.
Efficient photocatalytic degradation of volatile organic compounds by porous indium hydroxide nanocrystals.
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DOI：
10.1021/es902702v
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发表时间：
2010-01
影响因子：
11.4
通讯作者：
T. Yan;Jinlin Long;Xicheng Shi;Donghui Wang;Zhaohui Li;Xuxu Wang
中科院分区：
文献类型：
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作者：
T. Yan;Jinlin Long;Xicheng Shi;Donghui Wang;Zhaohui Li;Xuxu Wang
在超声辐射下，通过胶溶沉淀法成功地制备了高比表面积（110 m2·g-1）的纳米多孔In（OH）3光催化剂。采用X射线粉末衍射（XRD）、热重分析、氮吸附、透射电子显微镜和紫外-可见漫反射光谱对催化剂进行了表征。通过紫外光照射下气相分解几种挥发性有机污染物（丙酮、苯和甲苯）来评价样品的光催化活性，并与商业二氧化钛（Degussa P25）进行比较。结果表明，合成的In（OH）（3）具有比In（2）O（3）和TiO（2）更高的光催化活性和耐久性。因此，纳米In（OH）（3）在环境治理中具有潜在的应用价值，特别是在中国制鞋厂含苯废气的治理中。In（OH）（3）的优异光催化性能与其强的氧化能力、丰富的表面羟基、高比表面积以及多孔结构有关。
Nanosized porous In(OH)(3) photocatalysts with high surface areas (as much as 110 m(2)*g(-1)) were successfully synthesized by peptization of colloidal precipitates under ultrasound radiation. The resulting catalysts were characterized by X-ray powder diffraction (XRD), thermogravimetric analysis, nitrogen adsorption, transition electron microscopy, and UV-vis diffuse reflection spectroscopy. The photocatalytic activities of the samples were evaluated by the gas-phase decomposition of several volatile organic pollutants (acetone, benzene, and toluene) under UV light illumination and were compared with that of the commercial titania (Degussa P25). Results revealed that the as-synthesized In(OH)(3) exhibited much higher photocatalytic activity and durability than both In(2)O(3) and TiO(2). One, therefore, can conclude that nanosized In(OH)(3) has potential application in environmental treatment, especially in the removal of benzene-containing exhaust emissions from shoemaking plants in China. The excellent photocatalytic performance of In(OH)(3) can be attributed to its strong oxidation capability, abundant surface hydroxyl groups, and high BET surface area as well as the porous texture.