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Two-dimensional black phosphorus nanoflakes: A coreactant-free electrochemiluminescence luminophors for selective Pb2+ detection based on resonance energy transfer.

Authors
  • Wang, Yanhu1
  • Shi, Huihui2
  • Zhang, Lina3
  • Ge, Shenguang4
  • Meiling, Xu3
  • Wang, Xiao5
  • Yu, Jinghua2
  • 1 Shandong Analysis and Test Center, Qilu University of Technology (Shandong Academy of Sciences), 19 Keyuan Street, Jinan 250014, PR China; School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, PR China. , (China)
  • 2 School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, PR China. , (China)
  • 3 Shandong Provincial Key Laboratory of Preparation and Measurement of Building Materials, University of Jinan, Jinan 250022, PR China. , (China)
  • 4 Collaborative Innovation Center of Technology and Equipment for Biological Diagnosis and Therapy in Universities of Shandong, Institute for Advanced Interdisciplinary Research, University of Jinan, Jinan 250022, PR China. Electronic address: [email protected] , (China)
  • 5 Shandong Analysis and Test Center, Qilu University of Technology (Shandong Academy of Sciences), 19 Keyuan Street, Jinan 250014, PR China. Electronic address: [email protected] , (China)
Type
Published Article
Journal
Journal of hazardous materials
Publication Date
Aug 02, 2020
Volume
403
Pages
123601–123601
Identifiers
DOI: 10.1016/j.jhazmat.2020.123601
PMID: 32768863
Source
Medline
Keywords
Language
English
License
Unknown

Abstract

As a nondegradable environmental pollutant, lead ion (Pb2+) has been proven to be deleterious for environmental and health. Conveniently, quickly and accurately on-site detection of Pb2+ is of paramount importance. Herein, an electrochemiluminescence (ECL) assay protocol using two-dimensional black phosphorus (2D BP) nanoflakes as new ECL emitter for highly sensitive and selective trace Pb2+ was designed on the basis of Pb2+ induced ECL resonance energy transfer (ECL-RET) between 2D BP nanoflakes and Ag/AgCl nanocubes. Anodic green ECL emission of BP nanoflakes without any coreactants was achieved. It is noteworthy that the possible ECL mechanism and the influence of coreactants on the ECL behaviour of BP nanoflakes were further investigated. Benefitting from the well match between the ECL emission spectrum of BP nanoflakes (∼510 nm) and the absorption spectrum of Ag/AgCl nanocubes (200-300 nm and 400-700 nm), effective energy transfer yielded. The introduction of Pb2+ would lead to the detachment of Ag/AgCl nanocubes then result in an enhanced ECL emission. Based on this, the proposed method could accurately quantify the Pb2+ in the range from 0.5 pM to 5 nM, which exhibited comparative performance to previous work. Furthermore, this study presents the example of employing 2D BP nanoflakes as ECL emitters and constructing a coreactant-free ECL sensing platform, which might open up a promising route for the potential design and implement in clinical analysis. Copyright © 2020 Elsevier B.V. All rights reserved.

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