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Tuning the SERS activity and plasmon-driven reduction of p-nitrothiophenol on Ag@MoS2 film

Abstract

Combination of Plasmonic metal nanostructures with semiconductors has been widely applied in plasmon-driven photocatalysis. Here, a uniform Ag@MoS2 hybrid film is fabricated by depositing MoS2 onto the thin Ag film through the pulsed laser deposition (PLD) technique. The crystallinity of MoS2 can be adjusted by controlling the PLD deposition temperature. With the assistance of the surface-enhanced Raman scattering (SERS) technology, the Raman enhancement uniformity of the substrate and plasmon-driven reaction of p-nitrothiophenol (PNTP) dimerizing into p,p’-dimercaptobenzene (DMAB) are carefully studied on Ag@MoS2 film substrates with different crystallinity of MoS2. The increased crystallinity of MoS2 can efficiently accelerate the hot electron transfer process, resulting in the enhancement of SERS activity and improved efficiency of the plasmon-driven reaction. This study may pave a new way for the design of other uniform metal-semiconductor hybrids as SERS substrates and photocatalysts.

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Publication details

The article was received on 30 Sep 2018, accepted on 28 Nov 2018 and first published on 28 Nov 2018


Article type: Paper
DOI: 10.1039/C8FD00139A
Citation: Faraday Discuss., 2018, Accepted Manuscript
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    Tuning the SERS activity and plasmon-driven reduction of p-nitrothiophenol on Ag@MoS2 film

    P. Miao, Y. Ma, M. Sun, J. Li and P. Xu, Faraday Discuss., 2018, Accepted Manuscript , DOI: 10.1039/C8FD00139A

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