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Reference type: Journal
Authors: Li LL, Yang SM, Ding SQ, Shang PL, Yang J, Cao Q, Zha WL
Article Title: Preparation and Application of Bisphenol-A TiO2 Gel Molecularly Imprinted Electrochemical Sensor Based on the Sensitivity-Enhancement of Gold Nanoparticles.
Publication date: 2018
Journal: Chinese Journal of Applied Chemistry
Volume: 35
Issue: (4)
Page numbers: 484-490.
DOI: 10.11944/j.issn.1000-0518.2018.04.170107
Alternative URL: http://yyhx.ciac.jl.cn/EN/abstract/abstract16902.shtml

Abstract: A bisphenol-A (BPA) TiO2 gel molecularly imprinted electrochemical sensor was fabricated using gold nanoparticles (AuNPs) as sensitivity-enhanced materials based on surface sol-gel and self-assembly methods. AuNPs were characterized by scanning electron microscopy (SEM) and energy dispersive spectroscopy. BPA, TiO2 gel, and BPA-imprinted TiO2 gel were characterized by Fourier transform infrared (FTIR) spectrometry. Under optimal conditions, the sensor exhibits a good linear response from 1.0 x 10-8 to 1.0 x 10-5 mol/L for bisphenol A, with correlation coefficient 0.995 and a low detection limit of 0.6 x 10-8 mol/L (S/N=3). The prepared sensor was successfully applied in the detection of actual sample with 97.4%~103% recoveries.
Template and target information: bisphenol A, BPA
Author keywords: gold nanoparticles, bisphenol A, TIO2, sol-gel method, self-assembly method, Molecularly imprinted sensor


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