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Issue 6, 2018
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A negative feedback loop based on proton-driven in situ formation of plasmonic molybdenum oxide nanosheets

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Abstract

We report a negative feedback loop based on proton-driven in situ formation of plasmonic MoO3−x nanosheets. When the concentration of Cu2+ is below a certain level, the reaction of Cu2+ and glutathione (GSH) produces Cu+ and few protons. However, when the concentration of Cu2+ is above a certain threshold, the reaction of GSH and Cu2+ will generate enough protons in the system to initiate the redox reaction of GSH and MoO3 nanosheets, which generates plasmonic MoO3−x nanosheets. This process in turn inhibits the reaction of GSH and Cu2+, which sequesters the excess Cu2+ from the system. The formation of MoO3−x nanosheets lowers the concentration of protons in solution and turns off the production of MoO3−x nanosheets. More importantly, the threshold concentration of Cu2+ can be easily regulated by changing the concentration of MoO3 nanosheets.

Graphical abstract: A negative feedback loop based on proton-driven in situ formation of plasmonic molybdenum oxide nanosheets

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Supplementary files

Article information


Submitted
16 Nov 2017
Accepted
10 Jan 2018
First published
11 Jan 2018

Phys. Chem. Chem. Phys., 2018,20, 4347-4350
Article type
Paper

A negative feedback loop based on proton-driven in situ formation of plasmonic molybdenum oxide nanosheets

W. Huang, Y. Zhou, Y. Deng and Y. He, Phys. Chem. Chem. Phys., 2018, 20, 4347
DOI: 10.1039/C7CP07745A

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