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基于SI-ATRP技术制备磁性甲基对硫磷分子印迹聚合物及其吸附性能

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焦琳娟, 徐先燕, 吴晓莹, 赵存元. 基于SI-ATRP技术制备磁性甲基对硫磷分子印迹聚合物及其吸附性能[J]. 环境化学, 2020, (1): 89-100. doi: 10.7524/j.issn.0254-6108.2019070503
引用本文: 焦琳娟, 徐先燕, 吴晓莹, 赵存元. 基于SI-ATRP技术制备磁性甲基对硫磷分子印迹聚合物及其吸附性能[J]. 环境化学, 2020, (1): 89-100. doi: 10.7524/j.issn.0254-6108.2019070503
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JIAO Linjuan, XU Xianyan, WU Xiaoying, ZHAO Cunyuan. Synthesis of methyl-parathion molecularly imprinted magnetic nanoparticles via surface-initiated atom transfer radical polymerization (SI-ATRP) and its adsorption properties[J]. Environmental Chemistry, 2020, (1): 89-100. doi: 10.7524/j.issn.0254-6108.2019070503
Citation: JIAO Linjuan, XU Xianyan, WU Xiaoying, ZHAO Cunyuan. Synthesis of methyl-parathion molecularly imprinted magnetic nanoparticles via surface-initiated atom transfer radical polymerization (SI-ATRP) and its adsorption properties[J]. Environmental Chemistry, 2020, (1): 89-100. doi: 10.7524/j.issn.0254-6108.2019070503
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基于SI-ATRP技术制备磁性甲基对硫磷分子印迹聚合物及其吸附性能

  • 1. 韶关学院化学与环境工程学院, 韶关, 512005;

  • 2. 中山大学化学学院, 广州, 510275

    • 通讯作者: 徐先燕, E-mail: sofiaxxy@hotmail.com ; 
  • 基金项目:

    2017年广东省教育厅青年创新人才类项目（2017KQNCX180），2016年韶关市科技计划项目（201604），2016年度韶关学院科研项目（SZ2016KJ03）和2016年韶关学院大学生创新创业训练计划项目（Sycxcy2016-113）资助.

Synthesis of methyl-parathion molecularly imprinted magnetic nanoparticles via surface-initiated atom transfer radical polymerization (SI-ATRP) and its adsorption properties

  • 1. College of Chemistry and Environmental Engineering, Shaoguan University, Shaoguan, 512005, China;

  • 2. School of Chemistry, Sun Yat-Sen University, Guangzhou, 510275, China

    • Corresponding author: XU Xianyan, sofiaxxy@hotmail.com ; 
  • Fund Project: Supported by the Innovation Projects of Department of Education of Guangdong Province(2017KQNCX180), the Science and Technology Foundation of Shaoguan(201604)and Shaoguan University(SZ2016KJ03)and the Undergraduate Training Program for Innovation and Entrepreneurship of Shaoguan University(Sycxcy2016-113).

  • 摘要: 基于DFT计算，优选出甲基对硫磷（MP）和功能单体甲基丙烯酸（MAA），4-乙烯基吡啶（4-VP）的配比为1∶2∶1，采用表面引发原子转移自由基聚合（SI-ATRP）技术，制备了核壳式磁性甲基对硫磷分子印迹聚合物（Fe3O4@MPIPs）.通过扫描电子显微镜（SEM）、透射电子显微镜（TEM）、傅立叶变换红外光谱仪（FTIR）、X-射线衍射仪（XRD）和振动样品磁强计（VSM）对该磁性印迹聚合物进行了表征，并结合磁固相萃取（M-SPE）技术和气相色谱（GC）研究了其对MP的吸附行为，结果表明，Fe3O4@MPIPs对模板分子MP具有良好的特异性识别作用，在30 min内快速达到吸附平衡，最大吸附量为11.5 mg·g-1；与乐果和马拉硫磷相比，Fe3O4@MPIPs对MP的选择性系数分别为4.57和5.10，相对选择性系数分别为4.11和4.18.气相色谱检测结果表明，该磁性印迹聚合物可用于土豆样品中MP的快速分离富集，其加标回收率为87.4%—99.4%，RSD为3.6%—4.5%；重复使用5次后，Fe3O4@MPIPs回收率仍在90.3%以上，吸附量仍保持在第1次吸附量的82%以上.
    Abstract: A super-magnetic methyl parathion surface-molecularly imprinted nanoparticles Fe3O4@MPIPs were prepared via surface initiated atom transfer radical polymerization (SI-ATRP) with a theoretical proposed polymerization ratio of 1:2:1 for methyl parathion (MP):methacrylic acid (MAA):4-vinylpridine (4-VP). The morphology of Fe3O4@MPIPs was characterized by SEM,TEM,FTIR,VSM,and XRD. The adsorption properties were explored via a methodology of combining M-SPE coupled with gas chromatography. Results suggested that the well selective recognition of Fe3O4@MPIPs towards MP,which could reach the sorption equibrium in 30 mins with a max adsorption capacity of 11.5 mg·g-1. The selectivity coefficients of Fe3O4@MIPs for MP/dimethoate and MP/malathion were 4.57 and 5.10,respectively. While the relative selectivity coefficients of Fe3O4@MIPs for MP/dimethoate and MP/malathion were 4.11 and 4.18,respectively. Data tested by gas chromatography further suggested the Fe3O4@MPIPs could be used to fast determine methyl parathion in potato samples,of which the spiked methyl parathion of potato was successfully determined and the recoveries ranging from 87.4% to 99.4% with RSD of 3.6%-4.5% (n=7). The memory and recognition ability to MP for the regenerated adsorbent remain higher than 90.3% (>82% of the first adsorption) after five cycles.
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  • 收稿日期:  2019-07-05
  • 刊出日期:  2020-01-01

基于SI-ATRP技术制备磁性甲基对硫磷分子印迹聚合物及其吸附性能

    通讯作者: 徐先燕, E-mail: sofiaxxy@hotmail.com ; 
  • 1. 韶关学院化学与环境工程学院, 韶关, 512005;
  • 2. 中山大学化学学院, 广州, 510275
  • 收稿日期:  2019-07-05
  • 网络出版日期:  2020-01-01
基金项目:

2017年广东省教育厅青年创新人才类项目（2017KQNCX180），2016年韶关市科技计划项目（201604），2016年度韶关学院科研项目（SZ2016KJ03）和2016年韶关学院大学生创新创业训练计划项目（Sycxcy2016-113）资助.

摘要: 基于DFT计算，优选出甲基对硫磷（MP）和功能单体甲基丙烯酸（MAA），4-乙烯基吡啶（4-VP）的配比为1∶2∶1，采用表面引发原子转移自由基聚合（SI-ATRP）技术，制备了核壳式磁性甲基对硫磷分子印迹聚合物（Fe3O4@MPIPs）.通过扫描电子显微镜（SEM）、透射电子显微镜（TEM）、傅立叶变换红外光谱仪（FTIR）、X-射线衍射仪（XRD）和振动样品磁强计（VSM）对该磁性印迹聚合物进行了表征，并结合磁固相萃取（M-SPE）技术和气相色谱（GC）研究了其对MP的吸附行为，结果表明，Fe3O4@MPIPs对模板分子MP具有良好的特异性识别作用，在30 min内快速达到吸附平衡，最大吸附量为11.5 mg·g-1；与乐果和马拉硫磷相比，Fe3O4@MPIPs对MP的选择性系数分别为4.57和5.10，相对选择性系数分别为4.11和4.18.气相色谱检测结果表明，该磁性印迹聚合物可用于土豆样品中MP的快速分离富集，其加标回收率为87.4%—99.4%，RSD为3.6%—4.5%；重复使用5次后，Fe3O4@MPIPs回收率仍在90.3%以上，吸附量仍保持在第1次吸附量的82%以上.

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