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Cited by 142Electrocatalysts for Energy ConversionCO2 Reduction Techniques and CatalystsHydrogen Storage and Materials

The DOI matches its Crossref record; 7 of the 7 references it cites were found in a registry or an index.

Ultrasmall Ru Nanoparticles Highly Dispersed on Sulfur-Doped Graphene for HER with High Electrocatalytic Performance

Sun, Xuzhuo, Gao, Xuyun, Chen, Jing, Wang, Xin, Chang, Haixia, Li, Bo, Song, Dengmeng, Li, Jun, Li, Haisheng, Wang, Ning·2020·ACS Applied Materials & Interfaces
DOI 10.1021/acsami.0c14170
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Abstract

Nanostructuring and metal-support interactions have been explored as effective methods to improve the electrocatalytic activity in heterogeneous catalysis. In this study, we have fabricated ultrasmall Ru nanoparticles (NPs) dispersed on S-doped graphene (denoted as Ru/S-rGO) by a facile "one-pot" procedure. The experimental results indicated that both the S doping and moderate degree of oxidization of GO can induce the formation and high dispersion of the ultrasmall Ru NPs with larger electrochemically active surface areas for exposing more active sites. Metal-support interaction between S-doped graphene and Ru NPs was observed from the X-ray photoelectron spectroscopy and electronic charge-difference studies. It resulted in the decrease in the electron density of Ru, which facilitated electron release from H 2 O and H-OH bond breakage. The results of density functional theory calculation confirmed that the S-dopants could reduce the energy barrier for breaking the H-OH bond to accelerate water dissociation during the alkaline hydrogen evolution reaction (HER). At a current density 20 mA cm -2 , the lowest overpotential of 14 mV, superior to that of Pt/C in alkaline solution, was observed for Ru/S-rGO-24. The observed lowest value of overpotential was because of the ultrasmall size, high dispersion, and metal-support interaction. This work provides a simple and effective method in designing advanced electrocatalysts for the HER in an alkaline electrolyte.

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Metadata

Authors
Sun, X., Gao, X., Chen, J., Wang, X., Chang, H., Li, B., Song, D., Li, J., Li, H., & Wang, N.
Affiliations
  • Henan University of Technology (CN)
  • Northwest University (CN)
  • Henan University of Science and Technology (CN)
Corresponding author
  • Li, Bo
  • Li, Haisheng
  • Wang, Ning
ORCID
Venue
ACS Applied Materials & Interfaces
Publisher
American Chemical Society (ACS)
Published
2020-10-19
Volume
12
Issue
43
Pages
48591-48597
ISSN
  • 1944-8244 (ISSN-L)
  • 1944-8252
DOI
10.1021/acsami.0c14170
OpenAlex
W3093472884
Cited by
142
References
7
Citations by year
2026: 12 · 2025: 21 · 2024: 28 · 2023: 34 · 2022: 26 · 2021: 19 · 2020: 2
FWCI
4.00
Type
journal article
Language
en
Open access
closed
Licence
Locations
  • ACS Applied Materials & Interfaces (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Natural Science Foundation of Henan Province (162300410052)
  • National Natural Science Foundation of China (11404098, 21671158, 21773184)
  • Key Science and Technology Project of Henan (202102210238)
Topics
  • Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › Electrocatalysts for Energy Conversion
  • Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › CO2 Reduction Techniques and Catalysts
  • Physical Sciences › Materials Science › Materials Chemistry › Hydrogen Storage and Materials
Keywords
ruthenium nanoparticles, sulfur-doped graphene, hydrogen evolution reaction, alkaline electrocatalysis, metal-support interaction, nanoparticle dispersion, water dissociation, reduced graphene oxide, one-pot synthesis, overpotential

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