Sensitive photoelectrochemical assay of Pb2+ based on DNAzyme-induced disassembly of the “Z-scheme” TiO2/Au/CdS QDs system

Leixia Meng; Mengyue Liu; Ke Xiao; Xiaohua Zhang; Cuicui Du; Jinhua Chen

doi:10.1039/D0CC03149F

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Sensitive photoelectrochemical assay of Pb²⁺ based on DNAzyme-induced disassembly of the “Z-scheme” TiO₂/Au/CdS QDs system†

Leixia Meng,^a Mengyue Liu,^a Ke Xiao,^a Xiaohua Zhang,

^a Cuicui Du^a and Jinhua Chen

*^a

Author affiliations

* Corresponding authors

^a State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, P. R. China
E-mail: chenjinhua@hnu.edu.cn
Fax: +86-731-88821848
Tel: +86-731-88821848

Abstract

Herein, based on DNAzyme-induced disassembly of the “Z-scheme” TiO₂/Au/CdS QDs system, a facile and sensitive photoelectrochemical biosensor was developed for lead ion assay and a low detection limit of 0.13 pM was obtained.

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Article information

DOI: https://doi.org/10.1039/D0CC03149F
Article type: Communication
Submitted: 01 May 2020
Accepted: 15 Jun 2020
First published: 15 Jun 2020

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Chem. Commun., 2020,56, 8261-8264

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Sensitive photoelectrochemical assay of Pb²⁺ based on DNAzyme-induced disassembly of the “Z-scheme” TiO₂/Au/CdS QDs system

L. Meng, M. Liu, K. Xiao, X. Zhang, C. Du and J. Chen, Chem. Commun., 2020, 56, 8261 DOI: 10.1039/D0CC03149F

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