Improvement of the hydrophilicity of electrospun porous carbon nanofibers by grafting phenylsulfonic acid groups

被引：13

作者：

Bai, Yu ^{[1
]}

Huang, Zheng-Hong ^{[1
]}

Zhang, Zhen-Xing ^{[1
]}

Kang, Feiyu ^{[1
]}

机构：

[1] Tsinghua Univ, Dept Mat Sci & Engn, Beijing 100084, Peoples R China

来源：

JOURNAL OF COLLOID AND INTERFACE SCIENCE | 2013年 / 394卷

基金：

国家高技术研究发展计划(863计划);

关键词：

Electrospun porous carbon nanofibers; Surface functionalization; Hydrophilicity; Adsorption selectivity; VOLATILE ORGANIC-COMPOUNDS; ACTIVATED CARBON; SURFACE MODIFICATION; MICROPOROUS CARBONS; FUEL-CELLS; ADSORPTION; NANOTUBES; OXIDATION; BENZENE; TOLUENE;

D O I：

10.1016/j.jcis.2012.11.043

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：

Electrospun porous carbon nanofibers fabricated by electrospinning and steam activation were functionalized by spontaneous grafting of phenylsulfonic acid (PSA) groups. SEM and Raman observation suggested that modified electrospun nanofibers did not exhibit distinct changes of surface morphology and intrinsic graphitic structure. Nitrogen adsorption showed decrease in surface area and pore volume of modified carbon nanofibers. XPS and elementary analysis were conducted to characterize the surface chemistry of carbon nanofibers. The hydrophilic character was measured by the contact angles and static adsorption isotherms of water. The adsorption isotherms of benzene and butanone showed that the increasing hydrophilicity led to enhancement of adsorption performance for butanone on carbon nanofibers, indicating that the adsorption selectivity to hydrophilic organic compounds was improved. (C) 2012 Elsevier Inc. All rights reserved.

引用

页码：177 / 182

页数：6

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