期刊
BIOELECTROCHEMISTRY
卷 129, 期 -, 页码 211-217出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.bioelechem.2019.04.014
关键词
Molecularly imprinted electrochemical sensor; Metal-organic frameworks; Polypyrrole; Prussian blue; 17 beta-estradiol
资金
- National Natural Science Foundation of China [21671132]
In this paper, we constructed MIL-53 (AlOHbdc, bdc = benzene-1,4-dicarboxylate) /CNTs and Prussian blue (PB) as the double sensitization material of the sensing platform, in which the MIL-53/CNTs hybrid can not only increase the specific surface area but also increase the conductivity of the sensor and PB can play a role in amplifying electrical signals and accelerating electron transmission. Pyrrole was used as monomer and E2 was used as template for electropolymerization to form conductive film. Moreover, the overoxidation/dedoping elution method were used to simplify the experimental process. Under optimal conditions, the MIECS exhibited an excellent sensitivity and high selectivity with a wide linear response range between 10(-14) to 10(-9) mol L-1 and an estimated detection limit of 6.19 x 10(-15) mol L-1. (C) 2019 Published by Elsevier B.V.
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