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Related Experiment Video

Updated: Feb 26, 2026

Synthesis and Catalytic Performance of Gold Intercalated in the Walls of Mesoporous Silica
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Atomically Precise Gold Nanoclusters Accelerate Hydrogen Evolution over MoS2 Nanosheets: The Dual Interfacial Effect.

Shuo Zhao1, Renxi Jin1, Yongbo Song1

  • 1Department of Chemistry, Carnegie Mellon University, Pittsburgh, PA, 15213, USA.

Small (Weinheim an Der Bergstrasse, Germany)
|July 25, 2017
PubMed
Summary

This study enhances hydrogen evolution reaction (HER) by using gold nanoclusters with molybdenum disulfide (MoS2) as a cocatalyst. This novel approach significantly boosts catalytic performance for efficient hydrogen generation.

Keywords:
dual interfacial effectelectronic interactiongold nanoclustershydrogen evolutionmolybdenum disulfide

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Area of Science:

  • Materials Science
  • Electrochemistry
  • Catalysis

Background:

  • Electrocatalytic water splitting is crucial for sustainable hydrogen production.
  • Developing efficient and earth-abundant catalysts for the hydrogen evolution reaction (HER) is a key challenge.
  • Molybdenum disulfide (MoS2) is a promising material for HER, but its performance needs improvement.

Purpose of the Study:

  • To enhance the HER performance of MoS2 by introducing gold nanoclusters as a cocatalyst.
  • To investigate the role of interfacial interactions in catalyst design for HER.
  • To understand how the interface between gold nanoclusters and MoS2, as well as the ligand shell, affects catalytic activity.

Main Methods:

  • Synthesis of Au25(SR)18/MoS2 nanocomposites.
  • Electrocatalytic evaluation of HER activity using techniques like cyclic voltammetry and chronoamperometry.
  • Analysis of interfacial electronic interactions and the effect of surface ligands.

Main Results:

  • The Au25(SR)18/MoS2 nanocomposite demonstrated enhanced HER activity compared to plain MoS2 nanosheets.
  • Achieved a low onset potential of -0.20 V (vs RHE) and a high current density of 59.3 mA cm-2 at -0.4 V.
  • Identified that both the nanocluster-MoS2 interface and the metal core-ligand interface significantly influence catalytic performance.

Conclusions:

  • Introducing gold nanoclusters as a cocatalyst is an effective strategy to boost MoS2-based HER performance.
  • Tailoring interfacial electronic interactions is critical for optimizing catalyst design.
  • The choice of surface ligands on metal nanoclusters can distinctly modulate catalytic activity, offering a pathway for further catalyst development.