改性氧化石墨烯对Cu^2+吸附性能的研究  

Study on the Adsorption Property of the Modified Graphene Oxide for Cu2+

作　　者：宋军旺[1] 王博涛[1] 郭睿[2] 凌洁[1] SONG Jun-wang;WANG Bo-tao;GUO Rui;LING Jie(College of Chemical Engineering,Shaanxi Energy Institute,Xianyang 712000,China;The Ministry of Education Key Laboratory of Auxiliary Chemistry and Technology in Light Industry,Shaanxi University of Science and Technology,Xi’an 710021,China)

机构地区：[1]陕西能源职业技术学院化学工程系,陕西咸阳712000 [2]陕西科技大学轻化工助剂化学与技术教育部重点实验室,陕西西安710021

出　　处：《化学与粘合》2020年第3期162-165,共4页Chemistry and Adhesion

基　　金：陕西省2019年度专项科学研究计划项目(编号:19JK0194);陕西能源职业技术学院2019年校级科研课题(编号:19KYP04)。

摘　　要：采用改进的Hummer法制得氧化石墨烯(GO),用巯基乙胺对GO进行改性,制得巯基化氧化石墨烯(SH-GO),对有关产物的形貌和结构进行了表征,考察了pH值、SH-GO用量、吸附时间等因素对SH-GO吸附Cu2+效果的影响。结果表明,GO呈无序分布的片状结构,含有较多的含氧基团;pH值为5时的吸附效果最佳;SH-GO投加量为200mg·L^-1时,吸附效率可达98.8%;120min可达到吸附平衡;吸附过程符合准二级动力学模型和朗格缪尔等温吸附方程;SH-GO重复使用性能良好。The graphene oxide(GO)is prepared by modified Hummer method, then the GO is modified?by mercaptoethylamine in order to obtain thiol-functionalized graphene oxide(SH-GO). The morphology and structure of relative products are characterized. The effects of p H value, SH-GO dosage and adsorption time on the adsorption behavior of SH-GO for Cu2+ are discussed. The results show that the GO is flaky and distributes without regulation, and contains a large amount of oxygen-containing groups. The effect of adsorption will be best when the p H value is 5. The adsorption ef-ficiency can be 98.8% when the SH-GO dosage is 200 mg/L. The adsorption equilibrium is achieved in 120 mins. The adsorption process highly con-forms to the quasi-second-order kinetic model and Langmuir equation. The reusability of SH-GO is excellent.

关 键 词：氧化石墨烯 改性 铜离子 吸附 

分 类 号：TB332[一般工业技术—材料科学与工程]