Template Synthesis and Characterization of TiO2 Nanotubules

Abstract

Abstract: The template method for preparing nanostructures entails the synthesis of the desired material within the pores of a nanoporous membrane. In this work, TiO₂ nanotubules of the anatase form have been synthesized by sol-gel chemical method using porous anodic alumina as the template. Transmission electron microscopy(TEM), scanning electron microscopy(SEM), infrared spectroscopy(IR) and X-ray diffraction were used to investigate the structure and morphology of the TiO₂ nanotubules. The results showed that the diameter and length of the obtained nanotubules were determined by the pore size and length of the PAAtemplate. It was founded that through control of immersion time, both tubules and fibrils can be prepared; in addition, the wall thickness of the nanotubules can be varied at will. The result indicated that the sol particles absorbed preferably to the pore walls of the PAAmembrane due to the fact that the pore walls were negatively charged and the TiO₂ particles were positively charged.

Key words: TiO₂ nanotubules, Porous anodic alumina(PAA), Sol-gel, Electron microscopy

CLC Number:

O646

TrendMD:

LI Xiao-Hong, ZHANG Xiao-Gang, LI Hu-Lin . Template Synthesis and Characterization of TiO₂ Nanotubules[J]. Chem. J. Chinese Universities, 2001, 22(1): 130.

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Template Synthesis and Characterization of TiO₂ Nanotubules

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