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  

Preparation and Adsorptive Property of Cyclodextrin/Graphene Oxide Composite for Cu^(2+)

作　　者：邹静[1] 王芳辉[2] 杨艳丽[1] 马少华[1] ZOU Jing;WANG Fanghui;YANG Yanli;MA Shaohua(Shaanxi Institute of Technology, Xi'an 710300, China;College of Science,Beijing University of Chemical Technology,Beijing 100029, China)

机构地区：[1]陕西国防工业职业技术学院,西安710300 [2]北京化工大学理学院,北京100029

出　　处：《中国塑料》2019年第4期17-21,共5页China Plastics

基　　金：陕西省教育厅专项科研计划项目(17JK0066)

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 Cu2+ as well as the cavity structure of cyclodextrin.

关 键 词：环糊精 氧化石墨烯 吸附性能 复合材料 

分 类 号：TQ322[化学工程—合成树脂塑料工业]