CIESC Journal ›› 2023, Vol. 74 ›› Issue (2): 941-952.DOI: 10.11949/0438-1157.20221291

• Material science and engineering, nanotechnology • Previous Articles     Next Articles

Study on synthesis, adsorption and desorption performance of linear temperature-sensitive segment polymer regulated intelligent ReO4- ion-imprinted polymer

Wan XU1,2(), Zhenbin CHEN1,2(), Huijuan ZHANG1,2, Fangfang NIU1,2, Ting HUO1,2, Xingsheng LIU1,2   

  1. 1.School of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou 730050, Gansu, China
    2.State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou University of Technology, Lanzhou 730050, Gansu, China
  • Received:2022-09-26 Revised:2022-12-31 Online:2023-03-21 Published:2023-02-05
  • Contact: Zhenbin CHEN

线性温敏性聚合物嵌段调控的ReO4-智能离子印迹聚合物的设计制备及其吸附分离性能研究

许万1,2(), 陈振斌1,2(), 张慧娟1,2, 牛昉昉1,2, 火婷1,2, 刘兴盛1,2   

  1. 1.兰州理工大学材料科学与工程学院,甘肃 兰州 730050
    2.兰州理工大学省部共建有色金属先进加工与再利用 国家重点实验室,甘肃 兰州 730050
  • 通讯作者: 陈振斌
  • 作者简介:许万(1998—),男,硕士研究生,xuwanzong@163.com
  • 基金资助:
    甘肃省自然科学基金项目(22JR5RA227);沈阳材料科学国家实验室与有色金属先进加工与再利用国家重点实验室联合基金项目(18LHZD003)

Abstract:

The linear temperature-sensitive polymer poly(N,N-dimethyl acrylamide) (PDEA) was firstly synthesized by reversible addition-fragmentation chain transfer (RAFT). Subsequently, it was introduced into the ion-imprinted polymer preparation system using acrylic acid (AA), acrylamide (AM), and N,N-diethylacrylamide (DEA) as functional monomers, ReO4- as template ion, N,N-methylenebisacrylamide (NMBA) as crosslinker, and a mixture of methanol and water (VmethanolVwater=3∶7) as solvent. After the self-assembly was completed, polymerization was initiated by Vc-H2O2 to prepare an intelligent ion-imprinted polymer ReO4--IIP with linear temperature-sensitive polymer block regulation. The structure and morphology of ReO4--IIP were characterized by Fourier transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM), and the adsorption and separation performance of ReO4--IIP was evaluated by inductively coupled plasma atomic emission spectroscopy (ICP-AES). The results showed that ReO4--IIP was successfully prepared, the saturated adsorption capacity of ReO4--IIP was 0.1126 mmol/g, the desorption rate was 75%, and it had good selectivity in the binary mixed solution. After 7 adsorption/desorption cycles, ReO4--IIP still maintains good adsorption-desorption capacity, indicating that ReO4--IIP has great industrial application prospects.

Key words: smart ion-imprinted polymer, linear temperature-sensitive block, rhenium separation and recovery, selective adsorption, ReO4--IIP

摘要:

首先采用可逆加成断裂聚合法(RAFT),合成了线性温敏性聚合物聚N,N-二乙基丙烯酰胺(PDEA),之后将其引入到以丙烯酸(AA)、丙烯酰胺(AM)、N,N-二乙基丙烯酰胺(DEA)为功能单体,ReO4-为模板离子,N,N-亚甲基双丙烯酰胺(NMBA)为交联剂,甲醇和水混合溶液(V甲醇V蒸馏水=3∶7)为溶剂的离子印迹聚合物制备体系,自组装完成后,用Vc-H2O2引发聚合,制备出一种线性温敏性聚合物嵌段调控的智能离子印迹聚合 物——ReO4--IIP。用傅里叶变换红外光谱(FTIR)和扫描电子显微镜(SEM)对ReO4--IIP的结构和形貌进行了表征,以电感耦合等离子体发射光源(ICP-AES)为表征手段对ReO4--IIP的吸附分离性能进行了评价。结果表明:ReO4--IIP被成功制备,ReO4--IIP的饱和吸附量为0.1126 mmol/g,解吸率为75%,在二元混合溶液中具有良好的选择性,在经过7次吸附/解吸循环后,ReO4--IIP依旧保持良好的吸附解吸能力,表明ReO4--IIP具有巨大的工业应用前景。

关键词: 智能离子印迹聚合物, 线性温敏性嵌段, 铼分离回收, 选择性吸附, ReO4--IIP

CLC Number: