Sensitive photoelectrochemical assay of Pb 2+ based on DNAzyme-induced disassembly of the "Z-scheme" TiO 2 /Au/CdS QDs system

Herein, based on DNAzyme-induced disassembly of the "Z-scheme" TiO /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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Bibliographische Detailangaben
Veröffentlicht in:	Chemical communications (Cambridge, England) England), 2020-07, Vol.56 (59), p.8261-8264
Hauptverfasser:	Meng, Leixia, Liu, Mengyue, Xiao, Ke, Zhang, Xiaohua, Du, Cuicui, Chen, Jinhua
Format:	Artikel
Sprache:	eng
Schlagworte:	Biosensing Techniques Cadmium Compounds - chemistry Cations, Divalent - analysis DNA, Catalytic - chemistry Electrochemical Techniques Gold - chemistry Lead - analysis Limit of Detection Metal Nanoparticles - chemistry Photochemical Processes Quantum Dots - chemistry Sulfides - chemistry Titanium - chemistry
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Beschreibung
Zusammenfassung:	Herein, based on DNAzyme-induced disassembly of the "Z-scheme" TiO /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.
ISSN:	1359-7345 1364-548X
DOI:	10.1039/d0cc03149f