Removal of Cr(VI) from aqueous solution using magnetite/non-oxidative graphene composites: Synergetic effect of Cr(VI) on dyes removal

被引：8
作者：
Zheng, Mengliang [1 ]
Ahn, Yongtae [1 ]
Yoon, Yeojoon [2 ]
Park, Won Kyu [2 ,3 ]
Jung, Youmi [1 ]
Kwon, Minhwan [1 ]
Yang, Woo Seok [2 ]
Kang, Joon-Wun [1 ]
机构：
[1] Yonsei Univ, Dept Environm Engn, Yonseidae Gil 1, Wonju 220710, Gangwon Do, South Korea
[2] Korea Elect Technol Inst, Elect Mat & Device Res Ctr, Seongnam Si, South Korea
[3] Sungkyunkwan Univ, Sch Adv Mat Sci & Engn, Suwon, South Korea
来源：
SEPARATION SCIENCE AND TECHNOLOGY | 2016年 / 51卷 / 18期
关键词：
Magnetite; non-oxidative graphene; Cr(VI); dyes; adsorption; synergetic effect; CHROMIUM REMOVAL; OXIDE COMPOSITE; ADSORPTION; ADSORBENT; NANOPARTICLES; ACID; CYCLODEXTRIN; NANOSHEETS; CHITOSAN; ISOTHERM;
D O I：
10.1080/01496395.2016.1231693
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Non-oxidative graphene (nOG) synthesized from natural graphite powder was modified with magnetite (Fe3O4) for removal of Cr(VI) and dyes in aqueous solution. The adsorption behavior of Cr(VI) on Fe3O4/nOG (M-nOG) was systematically investigated, and the simultaneous adsorption of Cr(VI) and dyes such as methylene blue (MB) and rhodamine B (RhB) was evaluated. Adsorption kinetic and isotherm of Cr(VI) were fitted well with pseudo-second-order model and Sips model, respectively. For the binary system, Cr(VI) removal was not affected with increasing the dye concentration, whereas the adsorption capacity of both MB and RhB was enhanced with increasing the concentrations of Cr(VI).
引用
收藏
页码：2958 / 2969
页数：12
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