Mesostructured crystalline ceria with a bimodal pore system using block copolymers and ionic liquids as rational templates

被引：115

作者：

Brezesinski, T

Erpen, C

Iimura, K

Smarsly, B

机构：

[1] Max Planck Inst Colloids & Interfaces, D-14476 Potsdam, Germany

[2] Utsunomiya Univ, Fac Engn, Dept Appl Chem, Utsunomiya, Tochigi 3218585, Japan

来源：

CHEMISTRY OF MATERIALS | 2005年 / 17卷 / 07期

关键词：

D O I：

10.1021/cm0479180

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：

A concept is shown to fabricate mesoporous ceria thin films with a crystalline framework and a bimodal pore size distribution by evaporation-induced self-assembly followed by a suitable temperature treatment and template removal strategy. The use of a suitable block copolymer ((CH2CH2CH2(CH)CH2CH3)(79)(OCH2CH2)(89)OH), "KLE") and an ionic liquid template (leading to pores 3 nm in diameter) generated a bimodal pore system of deformed spherical mesopores of ca. 6 nm x 16 nm with the smaller pores being located in the matrix between the larger ones. The porosity was studied by a combination of quantitative SAXS analysis, physisorption, AFM, and TEM, introducing a general methodology for a quantitative structural characterization of such films.

引用

页码：1683 / 1690

页数：8

共 51 条

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