环境工程学报2018，Vol.12Issue(2)：441-447,7.DOI:10.12030/j.cjee.201706252
蛋白类污染物在PVDF/GO杂化膜表面的吸附特性
Adsorption characteristics of protein contaminants in PVDF/GO hybrid membrane surface
摘要
Abstract
In order to investigate the fouling behavior of proteins on the surface of membranes,this experiment adopted modified Hummers to prepared the "two-dimensional structure" of graphene oxide (GO).We prepared modified membranes with different amounts of GO addition and unraveled the dynamic process of pollution of bovine serum albumin (BSA) on the surface of modified membranes by self-made coated chips and dissipative quartz crystal microbalance (QCM-D) and so on.The results show that the surface of GO contains a large number of hydrophilic functional groups,and the contact angles of the modified membrane decreased in different degrees with the variational of GO additions,the higher the hydrophilicity of the modified membrane,the lower the adsorpted rate and saturation adsorption capacity of BSA on the membrane surface.The adsorption and accumulation of pollutants on the modified membrane surface underwent two stages in the adsorption process,first BSA accumulated rapidly on the membrane surface and the viscoelasticity of the polluted layer was smaller at the initial stage,the hydrophilic functional groups on the surface of the GO modified membranes contributed the water molecules to permeate into the polluted layer during the later adsorption period continuously and change the conformation of the adsorbed layer,resulting in a significant increase in its viscoelasticity,so the anti fouling performance of modified membrane was higher improved.关键词
氧化石墨烯/聚偏氟乙烯/超滤膜/耗散型石英晶体微天平/膜污染Key words
graphene oxide/polyvinylidene fluoride/ultrafiltration membrane/dissipation type quartz crystal micro balances/membrane fouling分类
资源环境引用本文复制引用
徐亚伟,朱振亚,王磊,姜家良,李青青..蛋白类污染物在PVDF/GO杂化膜表面的吸附特性[J].环境工程学报,2018,12(2):441-447,7.基金项目
陕西省重点科技创新团队计划(2017KCT-19-01) （2017KCT-19-01）
陕西省重点产业链(群)项目(2017ZDCXL-GY-07-03) （群）
