Photocatalytic oxidation of toluene to benzaldehyde over anatase TiO2 hollow spheres with exposed {001} facets
Photocatalytic oxidation of toluene to benzaldehyde over anatase TiO2 hollow spheres with exposed {001} facets
复制标题
在具有暴露的{001}面的锐钛矿型TiO2空心球上光催化氧化甲苯生成苯甲醛
DOI：
10.1016/j.catcom.2011.03.007
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发表时间：
2011-06-10
影响因子：
3.7
通讯作者：
Zhu, Jian
中科院分区：
文献类型：
--
作者：
Cao, Feng-Lei;Wang, Jin-Guo;Zhu, Jian
采用水热法制备了一系列新型的纳米TiO 2空心结构。当水热时间从20 min增加到72 h时，所得的TiO 2实心球逐渐转变为表面结晶度更高且（001）晶面暴露的TiO 2空心球。与其他TiO 2基样品和商业产品Degussa P-25相比，所制备的TiO 2 -72 h样品对甲苯选择性光催化氧化为苯甲醛表现出最高的活性。这种优异的光催化性能主要归因于TiO 2 -72 h的表面结晶度提高，增强了紫外线吸收和电荷分离效率。皇冠版权所有（C）2011由Elsevier B. V.出版。保留所有权利。
A new series of anatase TiO2 hollow structures were prepared by a facile hydrothermal process. When the hydrothermal time was increased from 20 min to 72 h, the resulting TiO2 solid spheres gradually transformed into TiO2 hollow spheres with higher surface crystallinity and exposed (001) facets. The as-prepared TiO2-72 h sample exhibited the highest activity comparing to other TiO2-based samples and commercial product Degussa P-25 towards the selective photocatalytic oxidation of toluene to benzaldehyde. Such great photocatalytic performance was mainly attributed to enhanced UV-adsorption and better charge separation efficiency due to higher surface crystallinity of TiO2-72 h. Crown Copyright (C) 2011 Published by Elsevier B.V. All rights reserved.