Fabrication of bimodal mesoporous carbons from petroleum pitch by a one-step nanocasting method

被引：38

作者：

Li, Siyu ^{[1
]}

Liang, Yeru ^{[1
]}

Wu, Dingcai ^{[1
,2
]}

Fu, Ruowen ^{[1
,2
]}

机构：

[1] Sun Yat Sen Univ, Inst Mat Sci, PCFM Lab, Sch Chem & Chem Engn, Guangzhou 510275, Guangdong, Peoples R China

[2] Sun Yat Sen Univ, DSAPM Lab, Guangzhou 510275, Guangdong, Peoples R China

来源：

CARBON | 2010年 / 48卷 / 03期

关键词：

NANOPOROUS CARBON; SILICA; TEMPLATES; ADSORPTION; REPLICAS; AEROGELS; SIZE;

D O I：

10.1016/j.carbon.2009.10.037

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 one-step nanocasting method to prepare a bimodal mesoporous carbon from a highly hydrophobic carbon precursor, i.e., petroleum pitch, has been successfully developed by adopting tetrahydrofuran and hydrofluoric acid as solvent and catalyst, respectively, for the gelation reaction of tetraethyl orthosilicate and water. Experimental results show that the introduction of proper amounts of petroleum pitch does not hamper this gelation reaction, thus forming a uniform silica/carbon composite. it was found that the as-prepared nanoporous carbon has a three-dimensional 3.4 nm-sized wormholelike mesoporous network with well-distributed 17.1 nm-sized particlelike mesopores. Such a bimodal mesoporous carbon has a high Brunauer-Emmett-Teller surface area (782 m(2) g(-1)) and a very large total pore volume (3.0 cm(3) g(-1)). (C) 2009 Elsevier Ltd. All rights reserved.

引用

页码：839 / 843

页数：5

共 24 条

[1] Influences of mesopore size on oxygen reduction reaction catalysis of Pt/carbon aerogels [J].