硅藻基Cr(Ⅵ)表面离子印迹吸附材料的制备及其对Cr(Ⅵ)的吸附性能  

Synthesis of Diatom-based Cr(Ⅵ)Surface Ion-Imprinted Adsorption Material and Its Adsorption Properties to Cr(Ⅵ)

作　　者：张航 马蓉 弓亮 黄丽丽 陈南春[1] 解庆林[2,3] 马丽丽[2] ZHANG Hang;MA Rong;GONG Liang;HUANG Lili;CHEN Nanchun;XIE Qinglin;MA Lili(School of Materials Science and Engineering,Guilin University of Technology,Guilin 541004,Guangxi,China;School of Environmental Science and Engineering,Guilin University of Technology,Guilin 541006,Guangxi,China;Collaborative Innovation Center for Water Pollution Control and Water Safety in Karst Area,Guilin University of Technology,Guilin 541004,Guangxi,China)

机构地区：[1]桂林理工大学材料科学与工程学院,广西桂林541004 [2]桂林理工大学环境科学与工程学院,广西桂林541006 [3]桂林理工大学,广西岩溶地区水污染控制与用水安全保障协同创新中心,广西桂林541004

出　　处：《材料导报》2022年第8期183-188,共6页Materials Reports

基　　金：国家自然科学基金(51564008,41665005);广西自然科学基金(2019GXNSFBA245083)。

摘　　要：本工作采用硅藻作为基体材料,选取Cr(Ⅵ)离子为模板、3-氨基丙基三乙氧基硅烷(APTES)为功能单体、环氧氯丙烷(ECH)为交联剂,通过表面离子印迹技术合成了一种环境友好型硅藻基Cr(Ⅵ)离子印迹吸附材料(DE/Cr(Ⅵ)-IIP)。采用傅里叶变换红外光谱(FTIR)、扫描电子显微镜(SEM)、扫描电子显微镜能谱(EDS)、X射线光电子能谱(XPS)以及Zeta电位对材料进行表征分析,探究了材料的形成过程。材料对Cr(Ⅵ)离子的吸附符合Langmuir等温吸附模型和准二级动力学模型,且材料表现出对Cr(Ⅵ)离子的高吸附率、高选择性和良好再生性。In this work,an environmentally friendly chromium ion-imprinted adsorption material was synthesized via surface ion-imprinted technique.The diatom chromium ion-imprinted polymer(DE/Cr(Ⅵ)-IIP)was formed by grafting the complex of diatom as matrix material,Cr(Ⅵ)ion as template,3-aminopropyltriethoxysilane(APTES)as functional monomer,and epichlorohydrin(ECH)as crosslinker.The material was characterized by using Fourier transform infrared(FTIR),scanning electron microscopy(SEM),energy dispersive spectrometry(EDS),X-ray photoelectron spectroscopy(XPS)and Zeta potential.The formation process of the material was explored.The adsorption of the material to Cr(Ⅵ)ions conforms to Langmuir isotherm model and pseudo-second-order kinetic model.The material showed high adsorption rate,high selectivity and good regeneration.

关 键 词：硅藻 表面离子印迹 形成过程 选择性吸附 

分 类 号：TB34[一般工业技术—材料科学与工程]