Metal (Ag, Pt)-MoS 2 Hybrids Greenly Prepared Through Photochemical Reduction of Femtosecond Laser Pulses for SERS and HER

Pei Zuo, Lan Jiang, Xin Li, Bo Li, Peng Ran, Xiaojie Li, Liangti Qu, Yongfeng Lu

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

MoS 2 -based nanohybrids have garnered extensive research interest for enhancing chemical catalytic performance, application of biochemical sensing, and inducing phase transition of MoS 2 . This work presents a novel green method to prepared Ag-MoS 2 and Pt-MoS 2 nanohybrids through the photogenerated electrons of MoS 2 nanosheets induced by using femtosecond laser pulses. Metal (Ag, Pt) nanoparticles are reduced by capturing the photogenerated electrons of MoS 2 , and in situ decorated on MoS 2 nanosheets, thus forming Ag-MoS 2 and Pt-MoS 2 nanohybrids, respectively. The proposed method does not need other chemical reagents except for the metal salts necessary for supplying metal cations, which commendably avoids the introduction of reagent byproducts to the reaction mixture, toxicity, and chemical or environmental contamination. This method also emphasizes the extensive application fields of MoS 2 . For example, the prepared Ag-MoS 2 hybrids reveal excellent surface enhanced Raman scattering performance with the enhancement factor reaching 1.32 × 10 7 and the detection limit low to 10 -11 M; the prepared 7.6% Pt-MoS 2 hybrids with C exhibit enhanced hydrogen evolution reaction activity with low Tafel slope of 25 mV/decade and high turnover frequency per exposed Mo of 11.15 H 2 s -1 at 220 mV; demonstrating the remarkable prospects of MoS 2 -based hybrids in chemical/biological molecule sensing as well as hydrogen production applications.

Original languageEnglish (US)
Pages (from-to)7704-7714
Number of pages11
JournalACS Sustainable Chemistry and Engineering
Volume6
Issue number6
DOIs
StatePublished - Jun 4 2018

Fingerprint

Ultrashort pulses
Nanosheets
laser
Metals
metal
Electrons
hydrogen
Hydrogen production
electron
Byproducts
Toxicity
Cations
Raman scattering
Hydrogen
Contamination
Salts
phase transition
Phase transitions
Positive ions
Nanoparticles

Keywords

  • chemical sensing
  • femtosecond laser irradiation
  • hydrogen production
  • in situ decoration
  • metal-MoS nanohybrids
  • multilayer MoS
  • photogenerated electrons

ASJC Scopus subject areas

  • Chemistry(all)
  • Environmental Chemistry
  • Chemical Engineering(all)
  • Renewable Energy, Sustainability and the Environment

Cite this

Metal (Ag, Pt)-MoS 2 Hybrids Greenly Prepared Through Photochemical Reduction of Femtosecond Laser Pulses for SERS and HER . / Zuo, Pei; Jiang, Lan; Li, Xin; Li, Bo; Ran, Peng; Li, Xiaojie; Qu, Liangti; Lu, Yongfeng.

In: ACS Sustainable Chemistry and Engineering, Vol. 6, No. 6, 04.06.2018, p. 7704-7714.

Research output: Contribution to journalArticle

Zuo, Pei ; Jiang, Lan ; Li, Xin ; Li, Bo ; Ran, Peng ; Li, Xiaojie ; Qu, Liangti ; Lu, Yongfeng. / Metal (Ag, Pt)-MoS 2 Hybrids Greenly Prepared Through Photochemical Reduction of Femtosecond Laser Pulses for SERS and HER In: ACS Sustainable Chemistry and Engineering. 2018 ; Vol. 6, No. 6. pp. 7704-7714.
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AU - Qu, Liangti

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