Photocatalytic Activity of Hierarchical Flower-Like TiO_(2) Superstructures with Dominant {001} Facets

作     者：XIANG Quanjun YU Jiaguo 向全军;余家国

作者机构：State Key Laboratory of Advanced Technology for Material Synthesis and ProcessingWuhan University of TechnologyWuhan 430070HubeLChina 

出 版 物：《催化学报》 (催化学报)

年 卷 期：2011年第32卷第4期

页      面：525-531页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 070304[理学-物理化学(含∶化学物理)] 08[工学] 0817[工学-化学工程与技术] 0703[理学-化学] 

基　　金：supported by the National Natural Science Foundation of China(50625208,20773097,and 20877061) the National Basic Research Program of China(973Program,2007CB613302and2009CB939704) Fundamental Research Funds for the Central Universities(2010-YB-01) 

主　　题：titanium dioxide {001}facet hierarchical flower-like titanium dioxide superstructure photocatalytic activity acetone methyl orange 

摘      要：The fabrication of well defined hierarchical structures of anatase TiO_(2) with a high percentage of reactive facets is of great importance and *** flower-like TiO_(2) superstructures(HFTS)self-assembled from anatase TiO_(2) nanosheets with exposed{001}facets(up to 87%)were synthesized by a simple alcohothermal strategy in a HF-H_(2)O-C_(2)H_(5)OH mixed solution using titanate nanotubes as *** samples were characterized by X-ray diffraction,scanning electron microscopy,transmission electron microscopy,and N2 adsorption-desorption *** photocatalytic activity was evaluated by the photocatalytic oxidation decomposition of acetone in air and methyl orange in aqueous solution under UV *** photocatalytic activity of HFTS was much higher than that of commercial Degussa P25 and tabular-shaped anatase TiO_(2) obtained using pure water as the synthesis *** enhancement in photocatalytic activity was related to several factors,including the hierarchically porous structure,exposed{001}facets,and increased light harvesting *** HFTS was also of interest for use in solar cells,photocatalytic H_(2) production,optoelectronic devices,sensors,and catalysis.