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;
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.
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.
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