Graphene oxide caged in cellulose microbeads for removal of malachite green dye from aqueous solution

被引:113
作者
Zhang, Xiaomei [1 ,2 ]
Yu, Hongwen [2 ]
Yang, Hongjun [2 ]
Wan, Yuchun [1 ]
Hu, Hong [1 ]
Zhai, Zhuang [1 ]
Qin, Jieming [1 ]
机构
[1] Changchun Univ Sci & Technol, Dept Mat Sci & Engn, Changchun 130022, Peoples R China
[2] Chinese Acad Sci, Northeast Inst Geog & Agroecol, Changchun 130102, Peoples R China
基金
中国国家自然科学基金;
关键词
Graphene oxide; Cellulose; Beads; Adsorption; Malachite green; CARBON NANOTUBES; ACTIVATED CARBON; ACRIDINE-ORANGE; ADSORPTION; WASTE; BEADS; WATER;
D O I
10.1016/j.jcis.2014.09.048
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 simple sol-gel method using non-toxic and cost-effective precursors has been developed to prepare graphene oxide (GO)/cellulose bead (GOCB) composites for removal of dye pollutants. Taking advantage of the combined benefits of GO and cellulose, the prepared GOCB composites exhibit excellent removal efficiency towards malachite green (>96%) and can be reused for over 5 times through simple filtration method. The high-decontamination performance of the GOCB system is strongly dependent on encapsulation amount of GO, temperature and pH value. In addition, the adsorption behavior of this new adsorbent fits well with the Langmuir isotherm and pseudo-second-order kinetic model. (c) 2014 Elsevier Inc. All rights reserved.
引用
收藏
页码:277 / 282
页数:6
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