Journal
ELECTROCHIMICA ACTA
Volume 261, Issue -, Pages 29-34Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2017.12.124
Keywords
Graphitic carbon nitride nanosheets; Electrochemiluminescent sensor; Forster resonance energy transfer; Cyanide
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Funding
- National Natural Science Foundation of China [21375020, 21675027]
- Program for Changjiang Scholars and Innovative Research Team in University [IRT_15R11]
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Electrochemiluminescence (ECL) emission of gold nanoparticles (Au NPs) loaded graphitic carbon nitride nanosheets (Au-CNN nanohybrids) can be modulated by the Au content. On the basis, a signal-on ECL sensor for detecting cyanide, a widespread toxic chemical, has been developed in this work. The sensor utilizes cyanide-mediated etching of Au NPs to recover the ECL emission of Au-CNN nanohybrids initially inhibited by Fo rster resonance energy transfer (FRET) from CNNs to Au NPs. The ECL sensor has a sensitive response to cyanide in the range of 50 nM to 1mM with a detection limit of 50 nM, and shows high specificity due to the high affinity of Au-cyanide complex. The proposed FRET modulated ECL sensor may prove valuable in future environmental monitoring. (c) 2017 Elsevier Ltd. All rights reserved.
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