A photoelectrochemical aptasensor for tetracycline based on the self-assembly of 2D MoS2 on a 3D ZnO/Au/ITO electrode

Weixin Li; Xinyang Wang; Lifen Chen; Fang Luo; Longhua Guo; Cuiying Lin; Jian Wang; Bin Qiu; Zhenyu Lin

doi:10.1039/D3AN01280H

A photoelectrochemical aptasensor for tetracycline based on the self-assembly of 2D MoS₂ on a 3D ZnO/Au/ITO electrode†

Weixin Li,^a Xinyang Wang,^a Lifen Chen,*^c Fang Luo,^b Longhua Guo,^c Cuiying Lin,^a Jian Wang,

*^a Bin Qiu

^a and Zhenyu Lin

*^a

Author affiliations

* Corresponding authors

^a Ministry of Education Key Laboratory for Analytical Science of Food Safety and Biology, Fujian Provincial Key Laboratory of Analysis and Detection for Food Safety, College of Chemistry, Fuzhou University, Fuzhou, Fujian, China
E-mail: jwang@fzu.edu.cn, zylin@fzu.edu.cn

^b College of Biological Science and Engineering, Fuzhou University, Fuzhou, Fujian 350116, China

^c College of Biological, Chemical Sciences and Engineering, Jiaxing University, Jiaxing, Zhejiang 314001, China
E-mail: chenlf@zjxu.edu.cn

Abstract

Two-dimensional (2D) layered MoS₂ has good dispersion and adsorption properties, but being a narrow bandgap semiconductor limits its application in photoelectric sensing. In this study, a homogeneous photoelectrochemical sensor based on three-dimensional (3D) ZnO/Au/2D MoS₂ is proposed for the ultrasensitive detection of tetracycline (TET). MoS₂ is uniformly embedded on the 3D ZnO/Au surface by ordered self-assembly. The physical method of π–π interaction of MoS₂ replaces the conventional use of chemically modifying aptamers on the electrode material surface. Under optimal conditions, this method has been successfully applied to the detection of TET in milk, honey, pig kidney and pork samples with reliable results. We believe that this study presents a method for the preparation of sensing carriers and target detection with great potential for application.

This article is part of the themed collection: Analyst HOT Articles 2023

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Article information

DOI: https://doi.org/10.1039/D3AN01280H
Article type: Paper
Submitted: 27 Jul 2023
Accepted: 03 Sep 2023
First published: 04 Sep 2023

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Analyst, 2023,148, 4995-5001

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A photoelectrochemical aptasensor for tetracycline based on the self-assembly of 2D MoS₂ on a 3D ZnO/Au/ITO electrode

W. Li, X. Wang, L. Chen, F. Luo, L. Guo, C. Lin, J. Wang, B. Qiu and Z. Lin, Analyst, 2023, 148, 4995 DOI: 10.1039/D3AN01280H

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