Preparation of polyamidoamine dendrimers functionalized magnetic graphene oxide for the adsorption of Hg(II) in aqueous solution | |
Ma, Ying-Xia; Xing, Dan; Shao, Wen-Jie; Du, Xue-Yan; La, Pei-Qing | |
2017-11 | |
发表期刊 | JOURNAL OF COLLOID AND INTERFACE SCIENCE |
ISSN | 0021-9797 |
卷号 | 505页码:352-363 |
摘要 | In this study, using graphene oxide supported Fe3O4 nanoparticles as carriers, ethylenediamine and methyl acrylate as functional monomer, different generations of polyamidoamine dendrimers functionalized magnetic graphene oxide (MGO-PAMAM), up to generation 4.0, were successfully synthesized via step by step growth chemical grafting approach and magnetic separation technology. In the process of synthesizing dendrimers, the generation of dendrimers was increased with the increasing of reaction cycles. In other words, the dendrimers generation is determined from the number of branch iterations. The obtained MGO-PAMAM were characterized by transmission electron microscopy (TEM), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), elemental analysis, X-ray photoelectron spectroscopy (XPS), thermogravimetric analysis (TGA), vibrating sample magnetometer (VSM), nitrogen adsorption/desorption isotherm and Zeta potential analysis. The adsorption properties of the synthesized products for Hg(II) in aqueous solution were investigated by batch experiments. The results showed that the MGO-PAMAM with generation 3.0 of dendrimers (MGO-PAMAM-G3.0) has the maximum adsorption capacity of 113.71 mg.g(-1). The adsorption process of MGO-PAMAM-G3.0 for Hg(II) was well described by the pseudo-second-order kinetics model and the Langmuir isotherm model. The Hg(II) adsorbed on the surface of MGO-PAMAM-G3.0 was reduced to Hg(I) in the adsorption process. In addition, the MGO-PAMAM possesse good magnetic separation performance. (C) 2017 Elsevier Inc. All rights reserved. |
关键词 | Magnetic graphene oxide Polyamidoamine Dendrimers Adsorption Hg(II) |
DOI | 10.1016/j.jcis.2017.05.104 |
收录类别 | SCI ; SCIE |
语种 | 英语 |
资助项目 | National Natural Science Foundation of China[51403091] ; Postdoctoral Science Foundation of China[2015M572616] |
WOS研究方向 | Chemistry |
WOS类目 | Chemistry, Physical |
WOS记录号 | WOS:000410464100038 |
出版者 | ACADEMIC PRESS INC ELSEVIER SCIENCE |
EI入藏号 | 20172403754980 |
EI主题词 | Mercury compounds |
EI分类号 | 701.2 Magnetism: Basic Concepts and Phenomena - 741.3 Optical Devices and Systems - 761 Nanotechnology - 801 Chemistry - 802.2 Chemical Reactions - 802.3 Chemical Operations - 804 Chemical Products Generally - 804.2 Inorganic Compounds - 815.1.1 Organic Polymers |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | https://ir.lut.edu.cn/handle/2XXMBERH/33033 |
专题 | 研究生院 材料科学与工程学院 省部共建有色金属先进加工与再利用国家重点实验室 |
通讯作者 | Ma, Ying-Xia; Du, Xue-Yan |
作者单位 | Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, Key Lab Nonferrous Met Alloys & Proc, Minist Educ,Sch Mat Sci & Engn, Lanzhou 730050, Gansu, Peoples R China |
第一作者单位 | 省部共建有色金属先进加工与再利用国家重点实验室 |
通讯作者单位 | 省部共建有色金属先进加工与再利用国家重点实验室 |
第一作者的第一单位 | 省部共建有色金属先进加工与再利用国家重点实验室 |
推荐引用方式 GB/T 7714 | Ma, Ying-Xia,Xing, Dan,Shao, Wen-Jie,et al. Preparation of polyamidoamine dendrimers functionalized magnetic graphene oxide for the adsorption of Hg(II) in aqueous solution[J]. JOURNAL OF COLLOID AND INTERFACE SCIENCE,2017,505:352-363. |
APA | Ma, Ying-Xia,Xing, Dan,Shao, Wen-Jie,Du, Xue-Yan,&La, Pei-Qing.(2017).Preparation of polyamidoamine dendrimers functionalized magnetic graphene oxide for the adsorption of Hg(II) in aqueous solution.JOURNAL OF COLLOID AND INTERFACE SCIENCE,505,352-363. |
MLA | Ma, Ying-Xia,et al."Preparation of polyamidoamine dendrimers functionalized magnetic graphene oxide for the adsorption of Hg(II) in aqueous solution".JOURNAL OF COLLOID AND INTERFACE SCIENCE 505(2017):352-363. |
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