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Fabrication of Three-Dimensionally Ordered Macro-/Mesoporous Titania Monoliths by a Dual-Templating Approach

Published online by Cambridge University Press:  01 July 2011

Zhiyan Hu ,
Zhongjiong Hua ,
Shaohua Cai ,
Jianfeng Chen ,
Yushan Yan  and
Lianbin Xu
Zhiyan Hu
Affiliation:
Key Lab for Nanomaterials, Ministry of Education, Beijing University of Chemical Technology, Beijing 100029, China
Zhongjiong Hua
Affiliation:
Key Lab for Nanomaterials, Ministry of Education, Beijing University of Chemical Technology, Beijing 100029, China
Shaohua Cai
Affiliation:
Key Lab for Nanomaterials, Ministry of Education, Beijing University of Chemical Technology, Beijing 100029, China
Jianfeng Chen
Affiliation:
Key Lab for Nanomaterials, Ministry of Education, Beijing University of Chemical Technology, Beijing 100029, China
Yushan Yan
Affiliation:
Department of Chemical and Environmental Engineering, University of California at Riverside, Riverside, CA 92521
Lianbin Xu*
Affiliation:
Key Lab for Nanomaterials, Ministry of Education, Beijing University of Chemical Technology, Beijing 100029, China Department of Chemical and Environmental Engineering, University of California at Riverside, Riverside, CA 92521
*
*E-mail: [email protected]
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Abstract

Three-dimensionally ordered macro-/mesoporous (3DOM/m) TiO2 monoliths were fabricated by a dual-templating synthesis approach employing a combination of both colloidal crystal templating (hard-templating) and surfactant templating (soft-templating) techniques. Titania precursor, consisting of amphiphilic triblock copolymer Pluronic P123 as a mesopore-structure-directing agent and titanium tetraisopropoxide as a titanium source, was infiltrated into the void spaces of the poly(methyl methacrylate) (PMMA) colloidal crystal monolith. Subsequent thermal treatment produced 3DOM/m TiO2 monolith. The macropore walls of the prepared 3DOM/m TiO2 exhibit a well-defined mesoporous structure with narrow pore size distribution, and the mesopore walls are composed of nanocrystalline anatase TiO2. The material also shows a high surface area (171 m2/g), and large pore volume (0.402 cm3/g).

Keywords

nanostructureporosityself-assembly
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1352: Symposium GG – Titanium Dioxide Nanomaterials , 2011 , mrss11-1352-gg05-10
Copyright
Copyright © Materials Research Society 2011

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