A one-pot approach to hierarchically nanoporous titania hollow microspheres with high photocatalytic activity

被引：255

作者：

Yu, Jiaguo ^{[1
]}

Liu, Wen ^{[1
]}

Yu, Huogen ^{[1
]}

机构：

[1] Wuhan Univ Technol, State Key Lab Adv Technol Mat Synth & Proc, Wuhan 430070, Peoples R China

来源：

CRYSTAL GROWTH & DESIGN | 2008年 / 8卷 / 03期

关键词：

LIQUID-PHASE DEPOSITION; MACRO-/MESOPOROUS TITANIA; TIO2; THIN-FILMS; MESOPOROUS TITANIA; CALCINATION TEMPERATURE; SELF-TRANSFORMATION; SILICA MICROSPHERES; HYDROTHERMAL METHOD; METHYLENE-BLUE; SURFACE-AREA;

D O I：

10.1021/cg700794y

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A simple one-step template method for the fabrication of crystalline titania (TiO2) hollow microspheres, based on template-directed deposition and in situ template-sacrificial dissolution, is developed in pure water by using SiO2 microspheres as templates and TiF4 as the precursor at 60 degrees C. The wall thickness and size of the TiO2 hollow spheres can be controlled by adjusting the concentration of the precursor TiF4 and the size of the SiO2 spheres, respectively. The prepared TiO2 hollow spheres exhibit hierarchically nanoporous structures and a It high photocatalytic activity. This hierarchically micromeso-macrostructured TiO2 hollow microspheres should find various potential applications in photocatalysis, catalysis, solar cells, and separation and purification processes.

引用

页码：930 / 934

页数：5

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