Dissolution-induced nanowire synthesis on hot-dip galvanized surface in supercritical carbon dioxide

Aaretti Kaleva, Ville Saarimaa, Saara Heinonen, Juha-Pekka Nikkanen, Antti Markkula, Pasi Väisänen, Erkki Levänen

    Research output: Contribution to journalArticleScientificpeer-review

    9 Citations (Scopus)
    37 Downloads (Pure)

    Abstract

    In this study, we demonstrate a rapid treatment method for producing a needle-like nanowire structure on a hot-dip galvanized sheet at a temperature of 50 C. The processing method involved only supercritical carbon dioxide and water to induce a reaction on the zinc surface, which resulted in growth of zinc hydroxycarbonate nanowires into flower-like shapes. This artificial patina nanostructure predicts high surface area and offers interesting opportunities for its use in industrial high-end applications. The nanowires can significantly improve paint adhesion and promote electrochemical stability for organic coatings, or be converted to ZnO nanostructures by calcining to be used in various semiconductor applications.

    Original languageEnglish
    Article number181
    JournalNanomaterials
    Volume7
    Issue number7
    DOIs
    Publication statusPublished - 11 Jul 2017
    Publication typeA1 Journal article-refereed

    Keywords

    • Nanowire
    • Supercritical carbon dioxide
    • Zinc hydroxycarbonate

    Publication forum classification

    • Publication forum level 1

    ASJC Scopus subject areas

    • Materials Science(all)
    • Chemical Engineering(all)

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