Dissolution-Induced Nanowire Synthesis on Hot-Dip Galvanized Surface in Supercritical Carbon Dioxide

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...

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Bibliographic Details
Published in:Nanomaterials (Basel, Switzerland) Switzerland), 2017-07, Vol.7 (7), p.181
Main Authors: Kaleva, Aaretti, Saarimaa, Ville, Heinonen, Saara, Nikkanen, Juha-Pekka, Markkula, Antti, Väisänen, Pasi, Levänen, Erkki
Format: Article
Language:English
Subjects:
Aluminum
Atmospheric corrosion
Carbon dioxide
Communication
Electrochemistry
Energy storage
Hot dip galvanizing
Hot dipping
Materials research
Nanomaterials
Nanotechnology
nanowire
Nanowires
Organic coatings
Paints
Patina
Photocatalysis
Protective coatings
supercritical carbon dioxide
Zinc
zinc hydroxycarbonate
Zinc oxide
Zinc oxides
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Summary: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.
ISSN:2079-4991
2079-4991
DOI:10.3390/nano7070181