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Indium Arsenide Quantum Dot Derived Catalyst for Selective CO2 Electrochemical Reduction to Formate

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Download Hi-Res ImageDownload to MS-PowerPointCite This:ACS Energy Lett. 2024, 9, 3, 1097-1102
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    Indium Arsenide Quantum Dot Derived Catalyst for Selective CO2 Electrochemical Reduction to Formate
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    • Fulvio Bellato
      Fulvio Bellato
      Istituto Italiano di Tecnologia (IIT), Via Morego 30, Genova, 16163, Italy
      Università degli Studi di Genova (UniGe), Via Dodecaneso 31, Genova, 16146, Italy
      Quantum Solutions, 1 Venture Road, Southampton, SO16 7NP, United Kingdom
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    • Michele Ferri*
      Michele Ferri
      Istituto Italiano di Tecnologia (IIT), Via Morego 30, Genova, 16163, Italy
      *Email: [email protected]
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      Orcidhttps://orcid.org/0000-0002-3862-6709
    • Dongxu Zhu
      Dongxu Zhu
      Istituto Italiano di Tecnologia (IIT), Via Morego 30, Genova, 16163, Italy
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      Orcidhttps://orcid.org/0000-0001-7404-1794
    • Thi-Hong-Hanh Le
      Thi-Hong-Hanh Le
      Istituto Italiano di Tecnologia (IIT), Via Morego 30, Genova, 16163, Italy
      Università degli Studi di Genova (UniGe), Via Dodecaneso 31, Genova, 16146, Italy
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    • Abinaya Annamalai
      Abinaya Annamalai
      Istituto Italiano di Tecnologia (IIT), Via Morego 30, Genova, 16163, Italy
      Università degli Studi di Genova (UniGe), Via Dodecaneso 31, Genova, 16146, Italy
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    • Martina Rizzo
      Martina Rizzo
      Istituto Italiano di Tecnologia (IIT), Via Morego 30, Genova, 16163, Italy
      Dipartimento di Scienza Applicata e Tecnologie (DISAT), Politecnico di Torino, Corso Duca degli Abruzzi 24, Torino, 10129, Italy
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    • Irene Martin
      Irene Martin
      Istituto Italiano di Tecnologia (IIT), Via Morego 30, Genova, 16163, Italy
      Dipartimento di Scienza Applicata e Tecnologie (DISAT), Politecnico di Torino, Corso Duca degli Abruzzi 24, Torino, 10129, Italy
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    • Luca Goldoni
      Luca Goldoni
      Istituto Italiano di Tecnologia (IIT), Via Morego 30, Genova, 16163, Italy
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    • Rosaria Brescia
      Rosaria Brescia
      Istituto Italiano di Tecnologia (IIT), Via Morego 30, Genova, 16163, Italy
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      Orcidhttps://orcid.org/0000-0003-0607-0627
    • Mirko Prato
      Mirko Prato
      Istituto Italiano di Tecnologia (IIT), Via Morego 30, Genova, 16163, Italy
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      Orcidhttps://orcid.org/0000-0002-2188-8059
    • Luca De Trizio
      Luca De Trizio
      Istituto Italiano di Tecnologia (IIT), Via Morego 30, Genova, 16163, Italy
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      Orcidhttps://orcid.org/0000-0002-1514-6358
    • Ilka Kriegel
      Ilka Kriegel
      Istituto Italiano di Tecnologia (IIT), Via Morego 30, Genova, 16163, Italy
      Dipartimento di Scienza Applicata e Tecnologie (DISAT), Politecnico di Torino, Corso Duca degli Abruzzi 24, Torino, 10129, Italy
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      Orcidhttps://orcid.org/0000-0002-0221-3769
    • Liberato Manna*
      Liberato Manna
      Istituto Italiano di Tecnologia (IIT), Via Morego 30, Genova, 16163, Italy
      *Email: [email protected]
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      Orcidhttps://orcid.org/0000-0003-4386-7985
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    ACS Energy Letters

    Cite this: ACS Energy Lett. 2024, 9, 3, 1097–1102
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    https://doi.org/10.1021/acsenergylett.4c00295
    Published February 21, 2024
    Copyright © 2024 American Chemical Society
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    Abstract

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    Despite a currently limited market size, formate is finding innovative applications as a hydrogen carrier and carbon source for upgrading processes to hydrocarbons and oxygenates. In this study, we combine the unique key features of In-based electrodes in the electrocatalytic CO2 reduction reaction (e.g., limited hydrogen evolution reaction activity, near-to-unity carbon selectivity toward formate) with the remarkable results obtained using nanostructured and highly defective quantum dot derived catalysts. After developing a scalable, safe and cheap InAs quantum dots synthesis based on a mild and nonpyrophoric reducing agent (i.e., NaCNBH3), a thorough voltammetric study allowed us to retrieve kinetic and thermodynamic data on their transformation into the actual catalytically active species (i.e., In0). In a flow electrolyzer operating under alkaline conditions at industrially relevant current densities, the catalyst achieved near-to-unity faradaic efficiency toward formate, with a remarkable production rate of ca. 1276 gFormate h–1 m–2 at ca. −0.73 V vs RHE (ηFormate = 0.61 V).

    Copyright © 2024 American Chemical Society

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    Supporting Information

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    The Supporting Information is available free of charge at https://pubs.acs.org/doi/10.1021/acsenergylett.4c00295.

    • Supporting Information gathers all the details related to i) Synthetic and electrochemical experimental setups and procedures, ii) Synthetic procedure/optimization and characterization of InAs QDs and InAs-modified electrodes, iii) ligand exchange procedure and characterization of the thiol-capped InAs QDs and related electrodes, iv) additional electrochemical and CO2RR product quantification data, v) postelectrolysis characterization of electrodes, vi) additional notes and literature comparison with other CO2 to formate electrocatalysts.(PDF)

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    ACS Energy Letters

    Cite this: ACS Energy Lett. 2024, 9, 3, 1097–1102
    Click to copy citationCitation copied!
    https://doi.org/10.1021/acsenergylett.4c00295
    Published February 21, 2024
    Copyright © 2024 American Chemical Society
    Request reuse permissions

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