Ag/SiO_2多孔纳米材料的制备及其对PCB77的吸附  

Preparation of Porous Silver/Silica Nanomaterials and Their Adsorption of PCB77

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)

机构地区：[1]莆田学院环境与生物工程学院,福建莆田351100 [2]福建省新型污染物生态毒理效应与控制重点实验室,福建莆田351100 [3]生态环境及其信息图谱福建省高等学校重点实验室,福建莆田351100

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)

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.

关 键 词：银/二氧化硅 多孔纳米材料 多氯联苯 吸附 

分 类 号：TQ424.2[化学工程] X131.2[环境科学与工程—环境科学]