Fabrication of Tunable Core-Shell Structured TiO2 Mesoporous Microspheres Using Linear Polymer Polyethylene Glycol as Templates

被引：101

作者：

Cui, Yuming ^{[1
]}

Liu, Lei ^{[1
]}

Li, Bo ^{[1
]}

Zhou, Xingfu ^{[1
]}

Xu, Nanping ^{[1
]}

机构：

[1] Nanjing Univ Technol, Coll Chem & Chem Engn, State Key Lab Mat Oriented Chem Engn, Nanjing 210009, Peoples R China

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2010年 / 114卷 / 06期

基金：

中国国家自然科学基金;

关键词：

HOLLOW SPHERES; PHOTOCATALYTIC ACTIVITY; TITANIA NANOTUBES; ZNO NANOSHEETS; ANATASE TIO2; SOLAR-CELLS; ROUTE; DEGRADATION; NANOSPHERES; ORGANIZATION;

D O I：

10.1021/jp908613u

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Mesoporous core-shell structured titanium dioxide (TiO2) microspheres were successfully prepared by a facile one-step hydrothermal method using polyethylene glycol (PEG, MW 2000) as the soft template. The products were characterized in light of the morphology and chemical composition using scanning electron microscopy, transmission electron microscopy, and X-ray powder diffraction (XRD) techniques. The XRD patterns show that the direct hydrothermal synthesized product is anatase titanium dioxide. The Brunauer-Emmett-Teller surface area is 113.8 m(2)/g, and the average pore size is 5.78 nm. In addition, the morphology evolution of core-shell structured titanium dioxide with the different hydrothermal times was also studied. Research shows that the shell morphology and the core size of the core-shell TiO2 spheres can be easily tuned by controlling the hydrothermal time through the Ostwald ripening process. A possible growth mechanism of the mesoporous core-shell structured TiO2 hollow microspheres was also proposed in this paper.

引用

页码：2434 / 2439

页数：6

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