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Related Concept Videos

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Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO2 Reduction
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Multi-doped borophene catalysts with engineered defects for CO2 reduction: A DFT study.

Naval Kishor Singh1, Pankaj Kumar1, Ashish Yadav1

  • 1Department of Chemical Engineering, Indian Institute of Technology Roorkee, Roorkee 247667, Uttarakhand, India.

Journal of Colloid and Interface Science
|October 28, 2023
PubMed
Summary

This study introduces a novel dual chromium-anchored tri-vacancy borophene (Cr2/TV-β12) catalyst for efficient electrochemical carbon dioxide reduction reaction (CO2RR). The catalyst demonstrates high selectivity and stability, producing formaldehyde with suppressed hydrogen evolution reaction.

Keywords:
CO(2) reduction reactionDFTDual-atom dopingTri-vacancyβ(12)-borophene

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Area of Science:

  • Materials Science
  • Electrochemistry
  • Catalysis

Background:

  • Electrochemical carbon dioxide reduction reaction (CO2RR) offers a sustainable pathway to convert CO2 into valuable products, mitigating greenhouse gas emissions.
  • Developing efficient and selective electrocatalysts is crucial for advancing CO2RR technology.
  • Borophene-based materials are emerging as promising candidates for catalytic applications due to their unique electronic properties.

Purpose of the Study:

  • To investigate the potential of dual chromium-anchored tri-vacancy borophene (Cr2/TV-β12) as an electrocatalyst for CO2RR.
  • To explore the catalytic performance, selectivity, and stability of Cr2/TV-β12 for CO2 conversion.
  • To understand the CO2 adsorption and activation mechanisms on the proposed electrocatalyst.

Main Methods:

  • Density Functional Theory (DFT) simulations were employed to design and analyze the electrocatalyst.
  • A tri-vacancy defect was introduced into β12 borophene to create the TV-β12 structure.
  • Electronic properties, charge distribution, and reaction pathways were calculated to evaluate catalytic performance.

Main Results:

  • The Cr2/TV-β12 electrocatalyst demonstrated efficient adsorption and activation of CO2.
  • The calculated limiting potential for CO2RR was -0.45 V, with formaldehyde as the primary product.
  • The catalyst exhibited high selectivity for CO2 reduction over the hydrogen evolution reaction (HER) and showed resistance to CO poisoning.

Conclusions:

  • Dual atom-doped tri-vacancy β12 borophene, specifically Cr2/TV-β12, shows significant potential as an efficient electrocatalyst for CO2RR.
  • The unique electronic structure and defect engineering of TV-β12 contribute to enhanced catalytic activity and selectivity.
  • This research paves the way for developing advanced borophene-based materials for sustainable CO2 conversion.