氧化石墨烯基表面印迹材料的制备及对镉离子吸附性能研究  

Study on Preparation of Graphene Oxide-based Surface Imprinting Material and Its Adsorption Performance for Cadmium Ions

作　　者：吴新华[1] 刘久逢 肖洁[1] 刘军[1] WU Xin-hua;LIU Jiu-feng;XIAO Jie;LIU Jun(Hunan Chemical Vocational Technology College,Zhuzhou Hunan 412004,China)

机构地区：[1]湖南化工职业技术学院,湖南株洲412000

出　　处：《辽宁化工》2023年第9期1257-1260,1264,共5页Liaoning Chemical Industry

基　　金：湖南省教育厅科学研究基金项目(项目编号:20C0678)。

摘　　要：以γ-甲基丙烯酰氧基丙基三甲氧基硅烷(KH570)改性后的氧化石墨烯(GO)为载体(FGO),甲基丙烯酸(MA)为功能单体,镉离子(Cd^(2+))为模板,偶氮二异丁腈(AIBN)为引发剂,制备了FGO与MA表面印迹Cd^(2+)的复合材料(FGO/MAIIP)和非表面印迹Cd^(2+)的复合材料(FGO/MANIP)。采用红外光谱(IR)和X射线光电子能谱(XPS)对印迹FGO/MAIIP、非印迹FGO/MANIP复合材料进行表征,考察了其对Cd^(2+)的吸附性能。结果显示:KH570与MA成功接枝到GO表面;发现当吸附剂FGO/MAIIP用量为0.4 g/L,pH=5,温度25℃,吸附时间为10 min条件下,FGO/MAIIP对Cd^(2+)的吸附量达到156 mg/g,对Zn^(2+)的选择系数达到8.34,相对分离比达到10.8。FGO/MAIIP composite with Cd^(2+)imprinting and composites of non-surface-imprinted Cd^(2+)(FGO/MANIP)were prepared usingγ-methacryloxypropyl trimethoxysilane(KH570)modified graphene oxide(GO)as the carrier,methacrylic acid(MA)as the functional monomer,cadmium ion(Cd^(2+))as the template,and azodiisobutyric nitrile(AIBN)as the initiator.IR and XPS characterization of Cd^(2+)imprinted FGO/MA,unimprinted FGO/MA composites was carried out to investigate Cd^(2+)adsorption.The results showed that KH570 and MA were successfully grafted to GO surface;when the amount of FGO/MAIIP was 0.4 g·L^(-1),pH was 5,the temperature was 25℃,the adsorption time was 100 min,Cd^(2+)adsorption of FGO/MAIIP reached 156 mg·g^(-1),the selection factor of Zn^(2+)reached 8.34,and the relative separation ratio reached 10.8.

关 键 词：氧化石墨烯 甲基丙烯酸 表面印迹 吸附 

分 类 号：TH145.1[一般工业技术—材料科学与工程]