Molybdenum trioxide thin films doped with gold nanoparticles grown by a sequential methodology: photochemical metal-organic deposition (PMOD) and DC-magnetron sputtering
Author
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Castillo, C.
Author
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Buono-Core, Gonzalo E.
Author
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Manzur, C.
Author
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Yutronic Sáez, Nicolás
Author
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Sierpe Bustamante, Rodrigo
Author
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Cabello, G.
Author
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Chornik Aberbuch, Boris
Admission date
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2016-11-24T20:24:52Z
Available date
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2016-11-24T20:24:52Z
Publication date
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2016
Cita de ítem
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J. Chil. Chem. Soc., 61, N°1(2016)
es_ES
Identifier
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0717-9707
Identifier
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https://repositorio.uchile.cl/handle/2250/141457
Abstract
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Gold nanoparticles (AuNPs) were deposited by DC-magnetron sputtering onto molybdenum trioxide (MoO3) thin films grown by Photochemical Metal-Organic Deposition (PMOD) on Si(100) and borosilicate glass substrates. The chemical, optical and morphology properties of the films were studied by UV/Vis Spectroscopy, Scanning Electron Microscopy (SEM), X-Ray Photoelectron Spectroscopy (XPS), and X-Ray Diffraction (XRD). SEM revealed that AuNPs formed after 5 s of sputtering. AuNPs are spherical and have both an average diameter of 18 nm and a relatively narrow size distribution. As the deposition time increases, larger structures are formed by an aggregation of AuNPs. XPS studies of the AuNP/MoO3 films on Si(100) showed the presence of Mo(VI) and Mo(V), which indicated that the films were primarily non-stoichiometric molybdenum oxides. The occurrence of oxygen vacancies in the substrate play an important role to stabilize the AuNPs
Molybdenum trioxide thin films doped with gold nanoparticles grown by a sequential methodology: photochemical metal-organic deposition (PMOD) and DC-magnetron sputtering