聚乙烯亚胺修饰的氧化石墨烯对Cr(Ⅵ)的吸附性能研究

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英文篇名：Research on the adsorption capability of polyethyleneimine modified graphene oxide for Cr(Ⅵ) 作者：张秋平 ; 张文银 ; 罗鸿威 ; 郭鹏翔 英文作者：Zhang Qiuping;Zhang Wenyin;Luo Hongwei;Guo Pengxiang;School of Science and Technology,Xinyang University; 关键词：聚乙烯亚胺 ; 氧化石墨烯 ; Cr(Ⅵ) ; 吸附 英文关键词：polyethyleneimine;;graphene oxide;;Cr(Ⅵ);;adsorption 中文刊名：工业水处理 英文刊名：Industrial Water Treatment 机构：信阳学院理工学院; 出版日期：2019-04-20 出版单位：工业水处理 年：2019 期：04 基金：河南省高等学校青年骨干教师培养计划项目(2016GGJS-205);; 河南省高等学校重点科研项目(18B150026);; 信阳学院2017年大学生创新创业训练计划项目(CX20170005) 语种：中文; 页：57-60 页数：4 CN：12-1087/X ISSN：1005-829X 分类号：X703

摘要

将聚乙烯亚胺(PEI)接枝到氧化石墨烯(GO)表面,得到聚乙烯亚胺修饰的氧化石墨烯(GO-PEI)材料。通过FTIR、XRD、TGA对GO-PEI的结构及PEI接枝量进行表征,并研究其对水中Cr(Ⅵ)的吸附性能。结果表明,PEI成功接枝到GO表面,其氨基含量为13.72 mmol/g。GO-PEI对Cr(Ⅵ)表现出优良的吸附性能,其吸附过程符合Langmuir等温吸附模型和准二级动力学模型。GO-PEI对Cr(Ⅵ)的去除是吸附与化学还原共同作用的结果。
        The polyethyleneimine modified graphene oxide(GO-PEI) has been synthesized by grafting polyethyleneimine(PEI) to the surface of graphene oxide(GO). The structure of GO-PEI and grafting extent of PEI have been characterized by means of FTIR,XRD and TGA,and its adsorption capability for Cr(Ⅵ) from water investigated. The results indicate that PEI is grafted to GO surface successfully,and its content of amino is 13.72 mmol/g. GO-PEI exhibits excellent adsorption capability for Cr(Ⅵ). Its adsorption process complies with the Langmuir isothermal adsorption model and pseudo-second order kinetics model. The removal of Cr(Ⅵ) by GO-PEI is a result from the combined action of adsorption and chemical reduction.

引文

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