环糊精-氧化石墨烯复合材料的制备及其对Cu~(2+)的吸附性能研究

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英文篇名：Preparation and Adsorptive Property of Cyclodextrin/Graphene Oxide Composite for Cu~(2+) 作者：邹静 ; 王芳辉 ; 杨艳丽 ; 马少华 英文作者：ZOU Jing;WANG Fanghui;YANG Yanli;MA Shaohua;Shaanxi Institute of Technology;College of Science,Beijing University of Chemical Technology; 关键词：环糊精 ; 氧化石墨烯 ; 吸附性能 ; 复合材料 英文关键词：cyclodextrin;;graphene oxide;;adsorption property;;composite 中文刊名：ZGSU 英文刊名：China Plastics 机构：陕西国防工业职业技术学院;北京化工大学理学院; 出版日期：2019-04-26 出版单位：中国塑料 年：2019 期：v.33;No.301 基金：陕西省教育厅专项科研计划项目(17JK0066) 语种：中文; 页：ZGSU201904005 页数：5 CN：04 ISSN：11-1846/TQ 分类号：21-25

摘要

采用改进的hummer法制备出氧化石墨烯,再与适量的环糊精溶液以及水合肼和氨水进行还原反应得到环糊精-氧化石墨烯复合材料,测定了复合材料在不同pH、时间、温度等条件下对水体中的Cu~(2+)的吸附量。结果表明,环糊精-石墨烯复合材料对水溶液中的Cu~(2+)具有优异的吸附性能,在中性条件下,经24 h后吸附量达212.44 mg/g,吸附率为83.46%;这主要是因为氧化石墨烯的巨大表面积和表面含氧基团对Cu~(2+)的静电吸引力,以及环糊精的空腔结构所致。
        The graphene oxide(GO) was prepared by a modified hummer 's method and then reacted with a proper amount of cyclodextrin solution, hydrazine hydrate and ammonia water to obtain a cyclodextrin/GO composite. The amounts of adsorption of the composite for Cu~(2+)were measured at different pH values, time and temperatures. The results indicated that the cyclodextrin/GO composite exhibited an excellent adsorption capability to Cu~(2+) in aqueous solutions, and its adsorption capacity reached 212.44 mg/g after 24 h under the neutral condition, presenting the adsorption efficiency of 83.46 %. Such a result was mainly due to the large surface area of the graphene oxide and the electrostatic attraction of the surface oxygen-containing groups to Cu~(2+) as well as the cavity structure of cyclodextrin.

引文

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