摘要
制备了分子印迹硅纳米-氧化石墨烯复合吸附材料,并研究了复合材料对双酚A(Bisphenol A,BPA)的吸附性能。实验结果表明:复合吸附材料对BPA的吸附在35min内达到吸附平衡,Langmuir等温线模型得出最大吸附容量约为338.3mg/g;相对于BPA的结构类似物,对BPA具有良好的选择吸附性能;在溶液p H接近6时对BPA的去除率最高,低温条件有利于吸附的进行;该材料具有优异的循环吸附性能。
A composite nano-material(MIP-GON)was prepared by coupling multi-layer surface imprinted silica nano-particles(MIP)with graphene oxide(GO).The adsorption property of MIP-GON for Bisphenol A was investigated.The experimental results showed that the adsorption equilibrium of BPA by the composite adsorption material was reached within 35 mins.The adsorption isothermal was well fitted by the Langmuir model,with a maximum adsorption capacity of 338.3mg/g.The composite material has fairly good selectivity for Bisphenol A comparing with its structural analogs.The absorption efficiency of the material was pH dependent,with optimal absorption around pH of 6.In addition,low temperature was favorable for the adsorption process.The material has excellent cyclic adsorption properties.
作者
夏秋鹏
王淳
王安
XIA Qiu-peng;WANG Chun;WANG An(College of Architecture&Environment,Sichuan University,Chengdu 610065,China;Chengdu Institute of Biology,Chinese Academy of Sciencei,Chengdu 610041,China)
出处
《四川环境》
2021年第1期28-35,共8页
Sichuan Environment
关键词
分子印迹
硅纳米
氧化石墨烯
双酚A
吸附
Molecular imprinting
silica nanoparticle
graphene oxide
Bisphenol A
selective adsorption
