Surface modification of graphene oxide by pyridine derivatives for copper(II) adsorption from aqueous solutions

被引：24
|
作者：
Guo, Yuexin [1 ,2 ]
Jia, Zhiqian [1 ,3 ]
Cao, Meijuan [4 ]
机构：
[1] Beijing Normal Univ, Coll Chem, Beijing 100875, Peoples R China
[2] North China Univ Sci & Technol, Sch Pharm, Tangshan 063009, Peoples R China
[3] Dalian Univ Technol, State Key Lab Fine Chem, Dalian 116024, Peoples R China
[4] Beijing Inst Graph Commun, Beijing Engn Res Ctr Printed Elect, Beijing 102600, Peoples R China
来源：
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY | 2017年 / 53卷
基金：
中国国家自然科学基金;
关键词：
Graphene oxide; Adsorption; Pyridine derivatives; Surface modification; Copper(II); HEAVY-METAL IONS; WASTE-WATER; ELOVICH EQUATION; THIN-FILM; REMOVAL; CONTAMINATION; EFFICIENT; MEMBRANES; CATALYST; WASTEWATERS;
D O I：
10.1016/j.jiec.2017.05.003
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Graphene oxide (GO) was covalently modified by series of pyridine derivatives with SOCl2 activation method for adsorption of Cu(II) for the first time. The effects of pyridine derivatives structure, adsorption thermodynamics, kinetics and adsorbents reusability were investigated. The adsorption capacity of modified GO is related to the number of pyridine groups, and substituent position. The maximum adsorption capacity of 4'-carboxy-2,2':6',2 ''-terpyridine modified GO (GO-CTPy) reaches 119.6 mg g(-1), which is much higher than that of other modified GO. The adsorption can be well described by the Langmuir isotherm model and pseudo-second-order kinetic model. GO-CTPy exhibited excellent regeneration and reusability. (C) 2017 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.
引用
收藏
页码：325 / 332
页数：8
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