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Effects of aging conditions on the structural properties of mesoporous SiO2/TiO2 composite materials with crystallized framework

Published online by Cambridge University Press:  01 February 2006

Hua Li ,
Wei-hua Shen ,
Jian-lin Shi ,
Liang-ming Xiong ,
Jian Liang  and
Meilin Ruan
Hua Li
Affiliation:
State Key Laboratory of High Performance Ceramic and Superfine Microstructure, Shanghai Institute of Ceramic, Chinese Academy of Science, Shanghai 200050, People’s Republic of China
Wei-hua Shen
Affiliation:
State Key Laboratory of High Performance Ceramic and Superfine Microstructure, Shanghai Institute of Ceramic, Chinese Academy of Science, Shanghai 200050, People’s Republic of China
Jian-lin Shi*
Affiliation:
State Key Laboratory of High Performance Ceramic and Superfine Microstructure, Shanghai Institute of Ceramic, Chinese Academy of Science, Shanghai 200050, People’s Republic of China
Liang-ming Xiong
Affiliation:
State Key Laboratory of High Performance Ceramic and Superfine Microstructure, Shanghai Institute of Ceramic, Chinese Academy of Science, Shanghai 200050, People’s Republic of China
Jian Liang
Affiliation:
State Key Laboratory of High Performance Ceramic and Superfine Microstructure, Shanghai Institute of Ceramic, Chinese Academy of Science, Shanghai 200050, People’s Republic of China
Meilin Ruan
Affiliation:
State Key Laboratory of High Performance Ceramic and Superfine Microstructure, Shanghai Institute of Ceramic, Chinese Academy of Science, Shanghai 200050, People’s Republic of China
*
a)Address all correspondence to this author. e-mail: jlshi@sunm.shcnc.ac.cn
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Abstract

Well-organized mesoporous SiO2/TiO2 materials with crystallized framework were synthesized. The resultant materials showed high surface area (180–300 m2/g), narrow pore-size distribution (3.5–6 nm), and nanocrystalline framework. The influences of aging conditions on the mesoporous 80TiO2–20SiO2 materials were investigated. The water in the initial solution is beneficial for the mesostructural organization of the as-prepared sample while air moisture (relative humidity) during the aging process plays a key role in the crystallization of the calcined sample. Low aging temperature is another decisive factor to the formation of the mesostructure.

Keywords

AgingCompositeStructural
Type
Articles
Information
Journal of Materials Research , Volume 21 , Issue 2 , February 2006 , pp. 380 - 385
Copyright
Copyright © Materials Research Society 2006

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