摘要
采用湿化学方法制备了新型银/二氧化硅(Ag/SiO_2)多孔纳米复合材料并对其结构进行了表征,探索了此种材料对3,3′,4,4′-四氯联苯(PCB77)的吸附性能,并对吸附过程中的动力学数据进行了拟合。结果表明,采用准一级吸附动力学拟合其吸附过程相关系数为0.958 7,用Freundlich和Langmuir吸附等温模型拟合相关系数分别为0.972 7、0.980 9,说明Ag/SiO_2多孔纳米复合材料是一种有效的PCB77吸附剂。
A new type of silver/silica(Ag/SiO2)porous nanomaterial was prepared by wet chemical methodand its structure was characterized.The adsorption properties of 3,3',4,4'-four polychlorinated biphenyls(PCB77)on the porous silver/silica nanomaterials were explored.The kinetic data results showed that the cor-relation coefficient of adsorption process was 0.9587 by quasi-first-order adsorption kinetics.The fitting coeffi-cients of Freundlich and Langmuir isotherms models were 0.9727 and 0.9809,respectively.The results indi-cate that Ag/SiO2 porous nanomaterial is an effective adsorbent.
作者
饶艳英
苏俊明
戴煌光
翁宏斌
李章良
RAO Yanying;SU Junming;DAI Huangguang;WENG Hongbin;LI Zhangliang(College of Environmental and Biological Engineering,Putian University,Putian Fujian 351100,China;Fujian Provincial Key Laboratory of Ecology-toxicological Effects&Control for Emerging Contaminants,Putian Fujian 351100,China;KeyLaboratory of Ecological Environment and Information Atlas of Fujian Colleges and Universities,PutianFujian 351100,China)
出处
《莆田学院学报》
2018年第5期60-65,共6页
Journal of putian University
基金
福建省教育厅科技项目(JK2016035
JAT160425)
福建省自然科学基金项目(2016J05043)
莆田学院科技项目(2016026
2018060)
关键词
银/二氧化硅
多孔纳米材料
多氯联苯
吸附
silver/silica
porous nanomaterial
polychlorinated biphenyls
adsorption
