Amino group functionalized SiO2@graphene oxide for efficient removal of Cu(II) from aqueous solutions

doi:10.1016/j.cherd.2019.03.028

IMR OpenIR

	Amino group functionalized SiO2@graphene oxide for efficient removal of Cu(II) from aqueous solutions
	Li, Min 1; Feng, Jian 1; Huang, Kun 2; Tang, Si 1; Liu, Ruihua 3; Li, Huan 1; Ma, Fuye 1; Meng, Xiaojing 1
通讯作者	Li, Min(limin1406@163.com) ; Meng, Xiaojing(mengxiaojing88@126.com)
	2019-05-01
发表期刊	CHEMICAL ENGINEERING RESEARCH & DESIGN
ISSN	0263-8762
卷号	145 页码:235-244
摘要	Herein, we report the synthesis and enhanced Cu(II) ions sorption performance of SiO2@GO-NH2 by an easy, cost-effective and efficient synthesis protocol. Various characterization techniques are employed to study the structure, morphology, chemical composition and porous nature of as-synthesis SiO2@GO-NH2 nanocomposite. Mechanistic insight into the adsorption process has been provided by using pseudo-second-order and Langmuir model. The maximum adsorption capacity of 105.4 mg g(-1) has been attained at 308 K according to Langmuir model and the adsorption equilibrium has been attained within 35 min. The results reveal that as-synthesized SiO2@GO-NH2 possesses fast adsorption kinetics. For the first time, the adsorption mechanism of Cu(II) ions has been explained by using ex-situ post sorption characterization of Cu(II)-loaded SiO(2)OGO-NH2. A series of experiments suggested that the Cu(II) ions are adsorbed on the SiO2@GO-NH2 surface by forming covalent bonds with available functional groups (-NH2 and-NH-). In other words, the adsorption process in SiO2@GO-NH2 is a chemical sorption process. These findings indicate that SiO2@GO-NH2 can be served as a promising sorbent for the efficient recovery and cost-effective elimination of Cu(II) ions from wastewater. (C) 2019 Institution of Chemical Engineers. Published by Elsevier B.V. All rights reserved.
关键词	Graphene oxide Silica gel Adsorption Cu(II)
资助者	National Natural Science Foundation of China ; Scientific and Technological Research Program of Chongqing Municipal Education Commission
DOI	10.1016/j.cherd.2019.03.028
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[51708075] ; Scientific and Technological Research Program of Chongqing Municipal Education Commission[KJ1713335] ; Scientific and Technological Research Program of Chongqing Municipal Education Commission[KJQN201801527]
WOS研究方向	Engineering
WOS类目	Engineering, Chemical
WOS记录号	WOS:000469896500023
出版者	INST CHEMICAL ENGINEERS
引用统计	被引频次：32[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/133814
专题	中国科学院金属研究所
通讯作者	Li, Min; Meng, Xiaojing
作者单位	1.Chongqing Univ Sci & Technol, Dept Chem Engn, Chongqing 401331, Peoples R China 2.Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, 72 Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China 3.Tsinghua Univ, Inst Nucl & New Energy Technol, Beijing 100084, Peoples R China
推荐引用方式 GB/T 7714	Li, Min,Feng, Jian,Huang, Kun,et al. Amino group functionalized SiO2@graphene oxide for efficient removal of Cu(II) from aqueous solutions[J]. CHEMICAL ENGINEERING RESEARCH & DESIGN,2019,145:235-244.
APA	Li, Min.,Feng, Jian.,Huang, Kun.,Tang, Si.,Liu, Ruihua.,...&Meng, Xiaojing.(2019).Amino group functionalized SiO2@graphene oxide for efficient removal of Cu(II) from aqueous solutions.CHEMICAL ENGINEERING RESEARCH & DESIGN,145,235-244.
MLA	Li, Min,et al."Amino group functionalized SiO2@graphene oxide for efficient removal of Cu(II) from aqueous solutions".CHEMICAL ENGINEERING RESEARCH & DESIGN 145(2019):235-244.