Synthesis of V-doped In2O3 Nanocrystals via Digestive-Ripening Process and Their Electrocatalytic Properties in CO2 Reduction Reaction

Myeong Geun Kim, Jinhoo Jeong, Youngjo Choi, Jinwoo Park, Eunjoon Park, Cheol Hong Cheon, Nak Kyoon Kim, Byoung Koun Min, Woong Kim

    Research output: Contribution to journalArticlepeer-review

    51 Citations (Scopus)

    Abstract

    The development of synthetic methods for monodisperse nanomaterial is of great importance in science and technology related to nanomaterials. The strong demands to prepare exceptionally monodisperse nanocrystals have made digestive-ripening one of the most sought-after size-focusing processes. Although digestive-ripening processes have been demonstrated to produce various metals and semiconductors, their applicability to oxides has rarely been studied despite various unique properties and applications of oxide nanomaterials. In this work, we demonstrate the successful synthesis of monodisperse V-doped In2O3 nanocrystals via a modified digestive-ripening process. The nanocrystals have truncated octahedral shape faceted with eight (222) and six (220) planes. To the best of our knowledge, this is the first report on the digestive-ripening synthesis of highly symmetrical doped oxide nanocrystals. Moreover, V-doped In2O3 nanocrystals exhibit electrocatalytic activities for CO2 electrochemical reduction and produce CH3OH, which has not been attainable from previously reported electrocatalysts based on indium or indium oxide. This distinctive catalytic property of V-doped In2O3 is attributed to the presence of V-dopants in the In2O3 host. Our demonstration has important implications for both nanocrystal synthesis and electrocatalyst development.

    Original languageEnglish
    Pages (from-to)11890-11897
    Number of pages8
    JournalACS Applied Materials and Interfaces
    Volume12
    Issue number10
    DOIs
    Publication statusPublished - 2020 Mar 11

    Bibliographical note

    Publisher Copyright:
    © 2020 American Chemical Society.

    Keywords

    • carbon dioxide reduction
    • digestive-ripening
    • dopant
    • electrocatalyst
    • indium oxide
    • nanocrystal

    ASJC Scopus subject areas

    • General Materials Science

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