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Issue 82, 2020
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High peroxidase-mimicking activity of gold@platinum bimetallic nanoparticle-supported molybdenum disulfide nanohybrids for the selective colorimetric analysis of cysteine

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Abstract

Herein, gold@platinum (Au@Pt) bimetallic nanoparticles with high catalytic ability were in situ decorated onto a molybdenum disulfide (MoS2) surface to obtain nanocomposites (MoS2-Au@Pt) with high peroxidase-mimicking activity, which were used to construct a colorimetric sensor for cysteine (Cys) detection. Interestingly, this sensor can efficiently distinguish Cys from homocysteine (Hcy), glutathione (GSH) and 19 other amino acids with high sensitivity. As expected, the colorimetric sensor can determine the Cys content in Cys supplement tablets due to its high stability and repeatability. Finally, the detection mechanism was studied.

Graphical abstract: High peroxidase-mimicking activity of gold@platinum bimetallic nanoparticle-supported molybdenum disulfide nanohybrids for the selective colorimetric analysis of cysteine

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Supplementary files

Article information


Submitted
29 Jul 2020
Accepted
31 Aug 2020
First published
01 Sep 2020

Chem. Commun., 2020,56, 12351-12354
Article type
Communication

High peroxidase-mimicking activity of gold@platinum bimetallic nanoparticle-supported molybdenum disulfide nanohybrids for the selective colorimetric analysis of cysteine

L. Wan, L. Wu, S. Su, D. Zhu, J. Chao and L. Wang, Chem. Commun., 2020, 56, 12351
DOI: 10.1039/D0CC05152G

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