Non-Aqueous Preparation of High-Crystallinity Hierarchical TiO2 Hollow Spheres with Excellent Photocatalytic Efficiency

被引：31

作者：

Lue, Xujie ^{[1
]}

Ding, Shangjun ^{[1
]}

Xie, Yian ^{[1
]}

Huang, Fuqiang ^{[1
,2
]}

机构：

[1] Chinese Acad Sci, Shanghai Inst Ceram, CAS Key Lab Mat Energy Convers, Shanghai 200050, Peoples R China

[2] Peking Univ, Coll Chem & Mol Engn, Beijing 100871, Peoples R China

来源：

EUROPEAN JOURNAL OF INORGANIC CHEMISTRY | 2011年 / 18期

基金：

中国国家自然科学基金;

关键词：

Nanostructures; Crystal growth; Titanium; Synthetic methods; Photolysis; LARGE SURFACE-AREA; SOLVOTHERMAL SYNTHESIS; TITANIA; ANATASE;

D O I：

10.1002/ejic.201100151

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

High-crystallinity hierarchical anatase TiO2 hollow spheres were prepared by a high-temperature (350 degrees C) and nonaqueous solvothermal method in the absence of water, templates, or additives. The hollow structures were assembled from highly crystallized TiO2 nanoparticles and exhibit superior photocatalytic properties relative to those of Degussa P25 TiO2 under irradiation with UV light. The influence of reaction temperature on the crystallinity, morphology, crystallite shape and size, band gap, specific surface area, and pore size distribution of TiO2 has been studied in detail. It is evident that reaction temperature is the most important factor to increase the crystallinity of TiO2 in order to improve its charge transfer and transport properties, which are important in photocatalysis.

引用

页码：2879 / 2883

页数：5

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