Citation: LI Ying, XU Wen-Kai, LI Ping, ZHU Xiao-Xue, HUANG Yan-Feng, ZHANG Ji-Mei. Molecularly Imprinted Polymer Electrochemical Sensor Based on Fe₃O₄/MnO₂ Doped Graphene Composites for Determination of 17β-Estradiol in Aquatic Environment[J]. Chinese Journal of Analytical Chemistry, ;2018, 46(7): 1047-1054. doi: 10.11895/j.issn.0253-3820.171195 shu

Molecularly Imprinted Polymer Electrochemical Sensor Based on Fe₃O₄/MnO₂ Doped Graphene Composites for Determination of 17β-Estradiol in Aquatic Environment

1.
School of Environmental and Chemical Engineering, Tianjin Polytechnic University, State Key Laboratory of Hollow Fiber Membrane Materials and Membrane Process, Tianjin 300387, China;
2.
School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China

Received Date: 24 August 2017
Revised Date: 30 March 2018

Fund Project: This work was supported by the National Natural Science Foundation of China (Nos. 21106101, 21475095), the Natural Science Foundation of Tianjin, China (No.13JCQNJC06300) and Postdoctoral Foundation of China (No. 2013M540281).

In this paper, Fe₃O₄/MnO₂ doped graphene molecularly imprinted hybrid material (Fe₃O₄/MnO₂-MIP@RGO) was successfully synthesized via reversible addition fragmentation chain transfer (RAFT) molecularly imprinting technique by using methacrylic acid as functional monomer, divinylbenzene as cross-linker, Fe₃O₄/MnO₂@RGO as carrier, and 17β-estradiol (17β-E2) as template molecule. A novel molecularly imprinting electrochemical sensor by using Fe₃O₄/MnO₂-MIP@RGO modified electrode was constructed to specifically detect trace 17β-E2 in water. The experimental results showed that the Fe₃O₄/MnO₂-MIP@RGO electrochemical sensor exhibited rapid and linear current response to 17β-E2 in water samples with a linear range of 4 nmol/L to 0.8 μmol/L (R=0.9852), the detection limit was 47.2 pmol/L (3σ) and the relative standard deviation (RSD) was from 2.1% to 2.5%. This study provides a simple and efficient, economical and reliable method for the monitoring of 17β-estradiol in the complex water environment.
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Molecularly Imprinted Polymer Electrochemical Sensor Based on Fe3O4/MnO2 Doped Graphene Composites for Determination of 17β-Estradiol in Aquatic Environment

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通讯作者: 陈斌, bchen63@163.com

Molecularly Imprinted Polymer Electrochemical Sensor Based on Fe₃O₄/MnO₂ Doped Graphene Composites for Determination of 17β-Estradiol in Aquatic Environment