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Atomic layer deposited Pt-Ru dual-metal dimers and identifying their active sites for hydrogen evolution reaction

  • Lei Zhang (Co-first Author)
  • , Rutong Si (Co-first Author)
  • , Hanshuo Liu (Co-first Author)
  • , Ning Chen
  • , Qi Wang
  • , Keegan Adair
  • , Zhiqiang Wang
  • , Jiatang Chen
  • , Zhongxin Song
  • , Junjie Li
  • , Mohammad Norouzi Banis
  • , Ruying Li
  • , Tsun-Kong Sham
  • , Meng Gu
  • , Li-Min Liu*
  • , Gianluigi A. Botton*
  • , Xueliang Sun*
  • *Corresponding author for this work

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

1 Downloads (CityUHK Scholars)

Abstract

Single atom catalysts exhibit particularly high catalytic activities in contrast to regular nanomaterial-based catalysts. Until recently, research has been mostly focused on single atom catalysts, and it remains a great challenge to synthesize bimetallic dimer structures. Herein, we successfully prepare high-quality one-to-one A-B bimetallic dimer structures (Pt-Ru dimers) through an atomic layer deposition (ALD) process. The Pt-Ru dimers show much higher hydrogen evolution activity (more than 50 times) and excellent stability compared to commercial Pt/C catalysts. X-ray absorption spectroscopy indicates that the Pt-Ru dimers structure model contains one Pt-Ru bonding configuration. First principle calculations reveal that the Pt-Ru dimer generates a synergy effect by modulating the electronic structure, which results in the enhanced hydrogen evolution activity. This work paves the way for the rational design of bimetallic dimers with good activity and stability, which have a great potential to be applied in various catalytic reactions. © 2019, The Author(s).
Original languageEnglish
Article number4936
Number of pages11
JournalNature Communications
Volume10
Online published30 Oct 2019
DOIs
Publication statusPublished - 2019
Externally publishedYes

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

  1. SDG 7 - Affordable and Clean Energy
    SDG 7 Affordable and Clean Energy

Publisher's Copyright Statement

  • This full text is made available under CC-BY 4.0. https://creativecommons.org/licenses/by/4.0/

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