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Issue 76, 2016
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Fast preparation of ultrafine monolayered transition-metal dichalcogenide quantum dots using electrochemical shock for explosive detection

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Abstract

A simple, general and fast method called “electrochemical shock” is developed to prepare monolayered transition-metal dichalcogenide (TMD) QDs with an average size of 2–4 nm and an average thickness of 0.85 ± 0.5 nm with only about 10 min of ultrasonication. Just like nails hammered into a plate, the electrochemical shock with Al3+ ions and the following extraction with the help of oleic acid can disintegrate bulk TMD crystals into ultrafine TMD QDs. The fast-prepared QDs are then applied to detect highly explosive molecules such as 2,4,6-trinitrophenol (TNP) with a low detection limit of 10−6 M. Our versatile method could be broadly applicable for the fast production of ultrathin QDs of other materials with great promise for various applications.

Graphical abstract: Fast preparation of ultrafine monolayered transition-metal dichalcogenide quantum dots using electrochemical shock for explosive detection

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Publication details

The article was received on 31 Jul 2016, accepted on 24 Aug 2016 and first published on 25 Aug 2016


Article type: Communication
DOI: 10.1039/C6CC06325J
Citation: Chem. Commun., 2016,52, 11442-11445
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    Fast preparation of ultrafine monolayered transition-metal dichalcogenide quantum dots using electrochemical shock for explosive detection

    Z. Chen, Z. Tao, S. Cong, J. Hou, D. Zhang, F. Geng and Z. Zhao, Chem. Commun., 2016, 52, 11442
    DOI: 10.1039/C6CC06325J

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