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Reference type: Journal
Authors: Feng SS, Wei XP, Zhong L, Li JP
Article Title: A Novel Molecularly Imprinted Photoelectrochemical Sensor Based on g-C3N4-AuNPs for the Highly Sensitive and Selective Detection of Triclosan.
Publication date: 2018
Journal: Electroanalysis
Volume: 30
Issue: (2)
Page numbers: 320-327.
DOI: 10.1002/elan.201700514

Abstract: A novel molecularly imprinted polymer (MIP) photoelectrochemical sensor was fabricated for the highly sensitive and selective detection of triclosan. The MIP photoelectrochemical sensor was fabricated using graphite-like carbon nitride (g-C3N4) and gold nanoparticles (AuNPs) as photoelectric materials. The MIP/g-C3N4-AuNPs sensor used photocurrent as the detection signal and was triggered by ultraviolet light (UV-Light 365 nm). g-C3N4-AuNPs was immobilized on indium tin oxide electrodes to produce the photoelectrochemically responsive electrode of the MIP/g-C3N4-AuNPs sensor. A MIP layer of poly-o-phenylenediamine was electropolymerized on the g-C3N4-AuNPs-modified electrode to act as the recognition element of the MIP/g-C3N4-AuNPs sensor and to enable the selective adsorption of triclosan to the sensor through specific binding. Under optimal experimental conditions, the designed MIP/g-C3N4-AuNPs sensor presented high sensitivity for triclosan with a linear range of 2 x 10-12 to 8 x 10-10 M and a limit of detection of 6.01 x 10-13 M. Moreover, the MIP/g-C3N4-AuNPs sensor showed excellent selectivity. The sensor had been successfully applied in the analysis of toothpaste samples
Template and target information: triclosan
Author keywords: Photoelectrochemical sensor, molecular imprinting, Triclosan, Graphite-like Carbon Nitride, gold nanoparticles

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