Tip-enhanced Raman imaging of photocatalytic reactions on thermally-reshaped gold and gold-palladium microplates

Tip-enhanced Raman spectroscopy (TERS) is used to investigate plasmonic and photocatalytic properties of walled gold-palladium microplates (WAu@PdMPs), an alloy bimetallic nanostructures with unique chemical selectivity, and high sensitivity. We found that WAu@PdMPs can reduce 4-nitrobenzenethiol si...

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Bibliographic Details
Published in:Chemical communications (Cambridge, England) England), 2021-01, Vol.57 (7), p.891-894
Main Authors: Li, Zhandong, El-Khoury, Patrick Z, Kurouski, Dmitry
Format: Article
Language:English
Subjects:
Bimetals
Gold
Nanostructure
Palladium
Photocatalysis
Raman spectroscopy
Selectivity
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Summary:Tip-enhanced Raman spectroscopy (TERS) is used to investigate plasmonic and photocatalytic properties of walled gold-palladium microplates (WAu@PdMPs), an alloy bimetallic nanostructures with unique chemical selectivity, and high sensitivity. We found that WAu@PdMPs can reduce 4-nitrobenzenethiol simultaneously to p , p ′-dimercaptoazobisbenzene (DMAB) and 4-aminothiophenol, whereas such reduction yields only DMAB on the surface of monometallic nanostructures. The plasmonic/photocatalytic properties of thermally-reshaped walled gold-palladium microplates (WAu@PdMPs) have been explored by TERS.
ISSN:1359-7345
1364-548X
DOI:10.1039/d0cc07060b