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Synthesis and Characterization of Mesoporous TiO2 in Acetonitrile Medium(PDF)

《南京师大学报(自然科学版)》[ISSN:1001-4616/CN:32-1239/N]

Issue:
2011年03期
Page:
58-64
Research Field:
化学
Publishing date:

Info

Title:
Synthesis and Characterization of Mesoporous TiO2 in Acetonitrile Medium
Author(s):
Xu QianqianYang Chun
School of Chemistry and Materials Science,Nanjing Normal University,Nanjing 210046,China
Keywords:
acetonitrileEISAmesoporous TiO2 synthesis
PACS:
O643.36;O614.411
DOI:
-
Abstract:
Mesoporous TiO2 was generally synthesized by using ethanol as solvent via Evaporation-Induced Self-Assembly ( EISA) method. Ethanol was replaced by acetonitrile,the mesoporous TiO2 materials were prepared by using TiCl4 and Ti( OBu) 4 as titanium precursors in the presence of triblock copolymer P123. By comparison of the syntheses in ethanol and in acetonitrile solvent,we found that the mesostructure obtained in acetonitrile is similar to that obtained in ethanol; but the crystallinity of sample is higher in the former. Effects of the different titanium source ratio and the different calcination temperature on the mesostructure and the crystallization degree of sample were also investigated. The results indicate that the molar ratio of TiCl4 /Ti( OBu) 4 = 1∶ 1 and the calcination at 350℃ are the optimal conditions for the sample synthesized in acetonitrile. The uniform and cylinder-like channels and anatase TiO2 with higher crystallinity can be obtained under such conditions.

References:

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Last Update: 2011-09-15