Article
Superhydrophobic supported Ag-NPs@ZnO-nanorods with photoactivity in the visible range
Author/s | Macías Montero, Manuel Jesús
Borrás Martos, Ana Isabel Romero Gómez, Pablo Sánchez Valencia, Juan Ramón Barranco Quero, Ángel Midgley, Paul A. Cotrino Bautista, José Rodríguez González-Elipe, Agustín |
Department | Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear |
Publication Date | 2012 |
Deposit Date | 2019-01-25 |
Published in |
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Abstract | In this article we present a new type of 1D nanostructures consisting of supported hollow ZnO nanorods (NRs) decorated with Ag nanoparticles (NPs). The 3D reconstruction by high-angle annular dark field scanning transmission ... In this article we present a new type of 1D nanostructures consisting of supported hollow ZnO nanorods (NRs) decorated with Ag nanoparticles (NPs). The 3D reconstruction by high-angle annular dark field scanning transmission electron microscopy (HAADF-STEM) electron tomography reveals that the Ag NPs are distributed along the hollow interior of the ZnO NRs. Supported and vertically aligned Ag-NPs@ZnO-NRs grow at low temperature (135 °C) by plasma enhanced chemical vapour deposition on heterostructured substrates fabricated by sputtered deposition of silver on flat surfaces of Si wafers, quartz slides or ITO. The growth mechanisms of these structures and their wetting behavior before and after visible light irradiation are critically discussed. The as prepared surfaces are superhydrophobic with water contact angles higher than 150°. These surfaces turn into superhydrophilic with water contact angles lower than 10° after prolonged irradiation under both visible and UV light. The evolution rate of the wetting angle and its dependence on the light characteristics are related to the nanostructure and the presence of silver embedded within the ZnO NRs.  |
Project ID. | NMP3-CT-2006- 032583
MAT2010-21228 MAT2010-18447 CSD2008-00023 P09-TEP-5283 CTS-5189 |
Citation | Macías Montero, M.J., Borrás Martos, A.I., Romero Gómez, P., Sánchez Valencia, J.R., Barranco Quero, Á., Midgley, P.A.,...,Rodríguez González-Elipe, A. (2012). Superhydrophobic supported Ag-NPs@ZnO-nanorods with photoactivity in the visible range. Journal of Materials Chemistry, 22, 1341-1346. |
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