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题名: Polydopamine-mediated surface-functionalization of graphene oxide for heavy metal ions removal
作者: Dong, ZH(董志华); Zhang, F(张丰); Wang, D(王栋); Liu, X(刘霞); Jin, J(靳健)
通讯作者: Jin, J (靳健)
关键词: Graphene oxide ; Polydopamine ; Heavy metal ion adsorption ; Surface functionalization
刊名: JOURNAL OF SOLID STATE CHEMISTRY
发表日期: 2015
DOI: 10.1016/j.jssc.2014.06.030
卷: 224, 页:6
收录类别: SCI
部门归属: 纳米仿生研究部
英文摘要: By utilizing polydopamine (PD) nano-thick interlayer as mediator, polyethylenimine (PEI) brushes with abundant amine groups were grafted onto the surface of PD coated graphene oxide (GO) uniformly via a Michael-Addition reaction and produced a PEI-PD/GO composite nanosheets. The PEI-PD/GO composite exhibited an improved performance for adsorption of heavy metal ions as compared to PEI-coated GO and pure GO. The adsorption capacities for Cu2+, Cd2+, Pb2+, Hg2+ are up to 87, 106, 197, and 110 mg/g, respectively. To further make the GO based composite operable, PEI-PD/RGO aerogel was prepared through hydrothermal and achieved a high surface area up to 373 m(2)/g. Although the adsorption capacity of PEI-PD/RGO aerogel for heavy metal ions decreases a little as compared to PEI-PD/GO composite dispersion (38, 32, 95, 113 mg/g corresponding to Cu2+, Cd2+, Pb2+, and Hg2+, respectively), it could be recycled several times in a simple way by releasing adsorbed metal ions, indicating its potential application for cleaning wastewater. (C) 2014 Elsevier Inc. All rights reserved.
语种: 英语
JCR小类分区: 四区
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内容类型: 期刊论文
URI标识: http://ir.sinano.ac.cn/handle/332007/3401
Appears in Collections:纳米仿生研究部_靳健团队_期刊论文

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Recommended Citation:
Dong, ZH,Zhang, F,Wang, D,et al. Polydopamine-mediated surface-functionalization of graphene oxide for heavy metal ions removal[J]. JOURNAL OF SOLID STATE CHEMISTRY,2015,224:6.
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