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化工新型材料  2018, Vol. 46 Issue (12): 125-128    
  新材料与新技术 本期目录 | 过刊浏览 | 高级检索 |
氧化石墨烯辐射接枝4-乙烯基吡啶及其对Cr(Ⅵ)吸附性能研究
张有为1, 马慧玲2*, 刘平桂1, 赫丽华1, 罗文1
1.北京航空材料研究院,北京100095;
2.北京服装学院材料科学与工程学院,北京100029
Radiation-induced grafting of 4-vinyl pyridine on graphene and its Cr(Ⅵ) adsorption
Zhang Youwei1, Ma Huiling2, Liu Pinggui1, He Lihua1, Luo Wen1
1.Beijing Institute of Aeronautical Materials,Beijing 100095;
2.School of Materials Science and Engineering,Beijing Institute of Clothing,Beijing 100029;
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摘要 通过辐照接枝法在氧化石墨烯(GO)的表面接枝4-乙烯基吡啶(4-VP)制备了一种新型Cr(Ⅵ)吸附剂,并研究了单体浓度和吸收剂量对4-VP接枝率的影响。结果表明:聚4-乙烯基吡啶成功接枝到GO表面。接枝产物对Cr(Ⅵ)具有较好的吸附性能,在40min即可达到吸附平衡,吸附机理为离子交换机理,吸附过程符合朗格缪尔吸附等温模型,理论最大吸附量为114.9mg/g。在pH=3.12时,吸附剂对Cr(Ⅵ)吸附量可以达到最大值99.8mg/g。
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张有为
马慧玲
刘平桂
赫丽华
罗文
关键词:  氧化石墨烯  4-乙烯基吡啶  辐射接枝  Cr(Ⅵ)吸附    
Abstract: A novel adsorbent for Cr(Ⅵ) was prepared by radiation-induced grafting of 4-vinyl pyridine onto the surface of graphene oxid.The grafting yield was adjusted by the total absorbed dose and the concentration of 4-vinyl pyridine.Fourier transform infrared spectroscopy confirmed that poly(4-vinyl pyridine) grafted onto the surface of graphene oxide.It was found that adsorption equilibrium could be achieved within 40min.The adsorption kinetics was followed by ion exchange mechanism,and Equilibrium data were explained with the help of Langmuir equation.The maximum theoretical Cr(Ⅵ) uptake of adsorbent was 114.9mg/g.The adsorption capacity reached a maximum Cr(Ⅵ) uptake (99.8mg/g) as pH was 3.12.
Key words:  graphene oxide    4-vinyl pyridine    radiation-induced grafting    Cr(Ⅵ) adsorption
收稿日期:  2017-03-18                     发布日期:  2019-01-07      期的出版日期:  2018-12-20
基金资助: 国家自然科学基金青年基金(11505011和11405168)
通讯作者:  马慧玲(1984-),女,博士,副教授,主要研究方向为功能化石墨烯及石墨烯纳米复合材料的制备。   
作者简介:  张有为(1985-),男,博士,工程师,主要研究方向为石墨烯的辐射改性及石墨烯复合材料的制备。
引用本文:    
张有为, 马慧玲, 刘平桂, 赫丽华, 罗文. 氧化石墨烯辐射接枝4-乙烯基吡啶及其对Cr(Ⅵ)吸附性能研究[J]. 化工新型材料, 2018, 46(12): 125-128.
Zhang Youwei, Ma Huiling, Liu Pinggui, He Lihua, Luo Wen. Radiation-induced grafting of 4-vinyl pyridine on graphene and its Cr(Ⅵ) adsorption. New Chemical Materials, 2018, 46(12): 125-128.
链接本文:  
http://www.hgxx.org/CN/  或          http://www.hgxx.org/CN/Y2018/V46/I12/125
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