Gold Nanoclusters Grown on MoS<sub>2</sub> Nanosheets by Pulsed Laser Deposition: An Enhanced Hydrogen Evolution Reaction

Au nanoparticles were decorated on a 2H MoS<sub>2</sub> surface to form an Au/MoS<sub>2</sub> composite by pulse laser deposition. Improved HER activity of Au/MoS<sub>2</sub> is evidenced by a positively shifted overpotential (−77 mV) at a current density of −10 m...

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Bibliographic Details
Main Authors: Yuting Jing, Ruijing Wang, Qiang Wang, Xuefeng Wang
Format: Article
Language:English
Published: MDPI AG 2021-12-01
Series:Molecules
Subjects:
Online Access:https://www.mdpi.com/1420-3049/26/24/7503
Description
Summary:Au nanoparticles were decorated on a 2H MoS<sub>2</sub> surface to form an Au/MoS<sub>2</sub> composite by pulse laser deposition. Improved HER activity of Au/MoS<sub>2</sub> is evidenced by a positively shifted overpotential (−77 mV) at a current density of −10 mA cm<sup>−2</sup> compared with pure MoS<sub>2</sub> nanosheets. Experimental evidence shows that the interface between Au and MoS<sub>2</sub> provides more sites to combine protons to form an active H atom. The density functional theory calculations found that new Au active sites on the Au and MoS<sub>2</sub> interface with improved conductivity of the whole system are essential for enhancing HER activity of Au/MoS<sub>2</sub>.
ISSN:1420-3049