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Título

Vacuum template synthesis of multifunctional nanotubes with tailored nanostructured walls

AutorFilippin, Nicolas; Macías-Montero, M. ; Saghi, Zineb; Idígoras, Jesús; Burdet, Pierre; Barranco, Ángel ; Midgley, Paul A.; Anta, Juan A.; Borrás, Ana
Fecha de publicación2016
EditorNature Publishing Group
CitaciónScientific Reports, 6:20637 (2016)
ResumenA three-step vacuum procedure for the fabrication of vertical TiO2 and ZnO nanotubes with three dimensional walls is presented. The method combines physical vapor deposition of small-molecules, plasma enhanced chemical vapor deposition of inorganic functional thin films and layers and a postannealing process in vacuum in order to remove the organic template. As a result, an ample variety of inorganic nanotubes are made with tunable length, hole dimensions and shapes and tailored wall composition, microstructure, porosity and structure. The fabrication of multishell nanotubes combining different semiconducting oxides and metal nanoparticles is as well explored. This method provides a feasible and reproducible route for the fabrication of high density arrays of vertically alligned nanotubes on processable substrates. The emptying mechanism and microstructure of the nanotubes have been elucidated through SEM, STEM, HAADF-STEM tomography and energy dispersive X-ray spectroscopy. In this article, as a proof of concept, it is presented the straightforward integration of ZnO nanotubes as photoanode in a photovoltaic cell and as a photonic oxygen gas sensor
Versión del editorhttp://dx.doi.org/10.1038/srep20637
URIhttp://hdl.handle.net/10261/129585
DOI10.1038/srep20637
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