Enhanced mechanical strength of chitosan hydrogel beads by impregnation with carbon nanotubes

被引：81

作者：

Chatterjee, Sudipta ^{[2
]}

Lee, Min W. ^{[1
]}

Woo, Seung H. ^{[2
]}

机构：

[1] Pohang Univ Sci & Technol, Dept Chem Engn, Pohang 790784, Gyeonybuk, South Korea

[2] Hanbat Natl Univ, Dept Chem Engn, Taejon 305719, South Korea

来源：

CARBON | 2009年 / 47卷 / 12期

基金：

新加坡国家研究基金会;

关键词：

CONGO RED; ADSORBENTS; ADSORPTION;

D O I：

10.1016/j.carbon.2009.06.043

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：

Chitosan (CS) hydrogel beads were impregnated with carbon nanotubes (CNTs), and their mechanical strength, acid stability and adsorption capacity to the anionic dye, Congo red (CR), were investigated by comparing with a conventional reinforcing method of cross-linking with epichlorohydrin (ECH). CS/CNT hydrogel beads were manufactured by dispersing CNTs (0.01 wt.%) with cetyltrimethylammonium bromide (CTAB) (0.05 wt.%) into CS solution (1 wt.%). Maximum endurable force at complete breakdown of CS hydrogel beads increased from 1.87 to 7.62 N with incorporation of CNTs and its adsorption capacity increased from 178.32 to 423.34 mg g(-1) for adsorption of CR. (C) 2009 Elsevier Ltd. All rights reserved.

引用

页码：2933 / 2936

页数：4

共 11 条

[1] Nitrate removal from aqueous solutions by cross-linked chitosan beads conditioned with sodium bisulfate [J].