Cited by 265CO2 Reduction Techniques and CatalystsElectrocatalysts for Energy ConversionCatalysts for Methane Reforming

CO2 Electroreduction Performance of Transition Metal Dimers Supported on Graphene: A Theoretical Study

Li, Yawei, Su, Haibin, Chan, Siew Hwa, Sun, Qiang·2015·ACS Catalysis

Abstract

Graphene-based materials are being hotly pursued for energy and environment applications. Inspired by the recent experimental synthesis of Fe 2 dimer supported on graphene (He, Z.; He, K.; Robertson, A. W.; Kirkland, A. I.; Kim, D.; Ihm, J.; Yoon, E.; Lee, G.-D.; Warner, J. H. Nano Lett. 2014, 14, 3766–3772), here using large-scale screening-based density functional theory and microkinetics modeling, we have identified that some transition metal dimers (Cu 2, CuMn, and CuNi), when supported on graphene with adjacent single vacancies (labeled as XY@2SV), perform better in CO 2 electroreduction with reduced overpotental and enhanced current density. Specifically, Cu 2 @2SV is catalytically active toward CO production, similar to Au electrodes but distinct from bulk Cu; MnCu@2SV is selective toward CH 4 generation, while NiCu@2SV promotes CH 3 OH production because of the difference in oxophilicity between incorporated Mn and Ni. The advantages of the outstanding selectivity of products, the high dispersity of spatial distribution, and the reduced overpotentials allow these new systems to be promising catalysts, which will motivate more experimental research in this direction to further explore graphene-based materials for CO 2 conversion.

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Crossref · 10.1021/acscatal.5b01165

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  • The predicted theoretical limiting potential for CH3OH production using Pt@dv-Gr is significantly less negative than any catalysts that produce CH4 or CH3OH in the literature, whether synthesized (-0.5 to -1.0 V) or predicted (-0.3 to -1.0 V).

    “In particular, as in the free energy diagram shown in Fig. 4 in detail, the predicted theoretical limiting potential (U L) for CH3OH production using Pt@dv-Gr is significantly less negative than any catalysts that produce CH4 or CH3OH in the literature, synthesized (–0.5 to –1.0 V)35,37,38 or predicted (–0.3 V to –1.0 V).4,6,39,40”

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Authors
Li, Y., Su, H., Chan, S. H., & Sun, Q.
Affiliations
  • Peking University (CN)
  • Nanyang Technological University (SG)
Corresponding author
Sun, Qiang
Venue
ACS Catalysis
Published
2015-10-08
Volume
5
Issue
11
Pages
6658-6664
ISSN
2155-5435 (ISSN-L)
OpenAlex
W2241001655
Cited by
265
References
45
Citations by year
2026: 11 · 2025: 16 · 2024: 22 · 2023: 38 · 2022: 32 · 2021: 40 · 2020: 30 · 2019: 24 · 2018: 25 · 2017: 21 · 2016: 6
FWCI
5.12
Type
journal article
Language
en
Open access
closed
Locations
  • ACS Catalysis (publishedVersion)
  • Rare & Special e-Zone (The Hong Kong University of Science and Technology) (submittedVersion)
Funders
  • Ministry of Science and Technology of the People's Republic of China (2012CB921404)
  • National Research Foundation-Prime Minister's office, Republic of Singapore
  • National Natural Science Foundation of China (11274023, 21173007)
Topics
  • Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › CO2 Reduction Techniques and Catalysts
  • Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › Electrocatalysts for Energy Conversion
  • Physical Sciences › Chemical Engineering › Catalysis › Catalysts for Methane Reforming
Keywords
electrochemical CO2 reduction, transition metal dimers, graphene-supported catalysts, graphene vacancies, co-production, methane selectivity, methanol selectivity, overpotential, microkinetic modeling, CO2 conversion

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