Ordered Mesoporous Boron Carbide Based Materials via Precursor Nanocasting

被引：24

作者：

Borchardt, Lars ^{[1
]}

Kockrick, Emanuel ^{[1
]}

Wollmann, Philipp ^{[1
]}

Kaskel, Stefan ^{[1
]}

Guron, Marta M. ^{[2
]}

Sneddon, Larry G. ^{[2
]}

Geiger, Dorin ^{[3
,4
]}

机构：

[1] Tech Univ Dresden, Dept Inorgan Chem, D-01062 Dresden, Germany

[2] Univ Penn, Dept Chem, Philadelphia, PA 19104 USA

[3] Tech Univ Dresden, Triebenberg Lab, HRTEM, D-01328 Dresden, Germany

[4] Tech Univ Dresden, Electron Holog Inst Struct Phys, D-01328 Dresden, Germany

来源：

CHEMISTRY OF MATERIALS | 2010年 / 22卷 / 16期

关键词：

TRANSITION-METAL; MOLECULAR-SIEVES; CARBON; TEMPLATE; SILICA; NANOFIBERS; CATALYSIS; NANOPARTICLES; DEPOSITION; CERAMICS;

D O I：

10.1021/cm100837r

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070305 [高分子化学与物理];

摘要：

Ordered mesoporous boron carbide materials with high specific surface areas up to 778 m(2)/g and hexagonal pore arrangement symmetries were obtained for the first time using a nanocasting strategy and the molecular bisdecaboranyl-hexane precursor for the infiltration into an ordered mesoporous silica template (SBA-15). Different preparation conditions were investigated, and it was found that by adjusting the precursor loading either nanorod structured replicas or tubular structured (CMK-5-like) materials were obtained. Changing the impregnation techniques, the solvents, and/or the pyrolysis temperatures allows tailoring of the properties of the hexagonal ordered mesoporous boron carbide replicas. The pore arrangement was altered to cubic ordered mesoporous boron carbide using KIT-6 silica matrix for nanocasting.

引用

页码：4660 / 4668

页数：9

共 41 条

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