A simple method to prepare titania nanomaterials of core-shell structure, hollow nanospheres and mesoporous nanoparticles  

作　　者：ZHANG Hui LI DeQian SHAO GaoSong YUAN ZhongYong 

机构地区：[1]Institute of New Catalytic Materials Science,Engineering Research Center of Energy Storage and Conversion(Ministry of Education),College of Chemistry,Nankai University,Tianjin 300071,China [2]Key Laboratory of Rare Earth Chemistry and Physics,Changchun Institute of Applied Chemistry,Chinese Academy of Sciences,Changchun 130022,China

出　　处：《Science China Chemistry》2009年第9期1498-1503,共6页中国科学（化学英文版）

基　　金：Supported by the National Natural Science Foundation of China (Grant No 20673060);973 Project (Grant No 2009CB623502);the Natural Science Foundation of Tianjin (Grant No 08JCZDJC21500);the Specialized Research Fund for the Doctoral Program of Higher Education (Grant No 20070055014);the Program for New Century Excellent Talents in University (Grant No NCET-06-0215)

摘　　要：A simple method to prepare titania nanomaterials of core-shell structure, hollow nanospheres and mesoporous nanoparticles has been developed. The core-shell nanostructures with NH4Cl as core and TiO2·xH2O-NH4Cl as shell were prepared in nonaqueous system by the deposition on the surface of the aggregated NH4Cl crystals, which could be transformed into mesoporous anatase nanoparticles or hollow nanospheres by calcination at 500°C or extraction with methanol, respectively. The hierarchical mesoporous nanostructures benefited the photocatalytic activities of the resultant titania nanomaterials, demonstrated by the UV light photodegradation of Methyl Orange.A simple method to prepare titania nanomaterials of core-shell structure, hollow nanospheres and mesoporous nanoparticles has been developed. The core-shell nanostructures with NH4Cl as core and TiO2·xH2O-NH4Cl as shell were prepared in nonaqueous system by the deposition on the surface of the aggregated NH4Cl crystals, which could be transformed into mesoporous anatase nanoparticles or hollow nanospheres by calcination at 500℃ or extraction with methanol, respectively. The hierarchical mesoporous nanostructures benefited the photocatalytic activities of the resultant titania nanomateri-als, demonstrated by the UV light photodegradation of Methyl Orange.

关 键 词：TITANIA MESOPOROUS core/shell structure HOLLOW SPHERE NANOPARTICLE 

分 类 号：TB383.1[一般工业技术—材料科学与工程]