TEMPO-oxidized cellulose hydrogel as a high-capacity and reusable heavy metal ion adsorbent

被引：143

作者：

Isobe, Noriyuki ^{[1
]}

Chen, Xiaoxia ^{[1
]}

Kim, Ung-Jin ^{[2
]}

Kimura, Satoshi ^{[1
,2
]}

Wada, Masahisa ^{[1
,2
]}

Saito, Tsuguyuki ^{[1
]}

Isogai, Akira ^{[1
]}

机构：

[1] Univ Tokyo, Grad Sch Agr & Life Sci, Dept Biomat Sci, Bunkyo Ku, Tokyo 1138657, Japan

[2] Kyung Hee Univ, Dept Plant & Environm New Resources, Coll Life Sci, Yongin 446701, Gyeonggi Do, South Korea

来源：

JOURNAL OF HAZARDOUS MATERIALS | 2013年 / 260卷

关键词：

Cellulose hydrogel; TEMPO-mediated oxidation; Heavy metal ion; Adsorbent; MEDIATED OXIDATION; WASTE-WATER; NATIVE CELLULOSE; ADSORPTION; DYES; EQUILIBRIUM; BIOSORPTION; REMOVAL; PB(II); CU(II);

D O I：

10.1016/j.jhazmat.2013.05.024

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Nitroxy radical catalyzed oxidation with hypochlorite/bromide (TEMPO-mediated oxidation) was performed on a cellulose hydrogel prepared using LiOH/urea solvent. TEMPO oxidation successfully introduced carboxyl groups onto the surface of the cellulose hydrogel with retention of the gel structure and its nanoporous property. The equilibrium measurement of Cu2+ adsorption showed favorable interaction with Cu2+ and high maximum adsorption capacity. In addition, over 98% of the adsorbed Cu2+ was recovered using acid treatment, and the subsequent washing allowed the TEMPO-oxidized gels to be used repeatedly. Furthermore, the TEMPO-oxidized cellulose hydrogel showed high adsorption capacity for other toxic metal ions such as Zn2+, Fe3+, Cd2+, and Cs+. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：195 / 201

页数：7

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