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http://hdl.handle.net/10773/20081
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DC Field | Value | Language |
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dc.contributor.author | Gomes, A. | pt |
dc.contributor.author | Videira, A. | pt |
dc.contributor.author | Monteiro, O. C. | pt |
dc.contributor.author | Nunes, C. D. | pt |
dc.contributor.author | Carvalho, M. L. | pt |
dc.contributor.author | Lopes, A. B. | pt |
dc.date.accessioned | 2017-12-07T19:34:50Z | - |
dc.date.issued | 2013 | pt |
dc.identifier.issn | 1432-8488 | pt |
dc.identifier.uri | http://hdl.handle.net/10773/20081 | - |
dc.description.abstract | Nanocomposite Zn-Ag2S/TiO2 and Zn-TiO2 films were prepared by pulsed current electrolysis from acidic zinc sulphate solutions on a titanium substrate. The influence of the nanoparticles' nature on the structural and morphological characteristics of the metallic electrodeposit was also investigated. The electrodeposits were characterized by X-ray diffraction and scanning electron microscopy coupled with energy-dispersive X-ray spectroscopy. Using transmission electron microscopy, it was possible to conclude that the chemical treatment applied to the commercial TiO2 particles promotes the formation of Ag2S/TiO2 composite nanoparticles, with Ti, Ag, S and O in its composition. This was also was confirmed by X-ray fluorescence spectrometry. These particles absorb visible light radiation which makes them promising materials for photoelectrocatalytic processes. Moreover, the modification in nanoparticle composition plays a remarkable influence on the coating morphology and Zn crystallite size. When TiO2 is added, a change of Zn texture was observed along with a decrease in crystallite size. In contrast, the metal matrix nanocomposites prepared with Ag2S/TiO2 exhibit a spongy Zn morphology with a lower average Zn crystallite size. The nanocomposite films were tested in the photoelectrodegradation of ibuprofen and the best results were obtained for Zn-Ag2S/ TiO2 photoelectrodes. | pt |
dc.language.iso | eng | pt |
dc.publisher | SPRINGER | pt |
dc.relation | info:eu-repo/grantAgreement/FCT/3599-PPCDT/64856/PT | pt |
dc.relation | info:eu-repo/grantAgreement/FCT/COMPETE/132936/PT | pt |
dc.rights | restrictedAccess | por |
dc.subject | VISIBLE-LIGHT | pt |
dc.subject | NANOCRYSTALLINE ZINC | pt |
dc.subject | DIFFUSE-REFLECTANCE | pt |
dc.subject | TITANIUM-DIOXIDE | pt |
dc.subject | ACTIVATED CARBON | pt |
dc.subject | COMMERCIAL TIO2 | pt |
dc.subject | PARTICLES | pt |
dc.subject | COATINGS | pt |
dc.subject | ZN | pt |
dc.subject | STEEL | pt |
dc.title | Pulsed current electrodeposition of Zn-Ag2S/TiO2 nanocomposite films as potential photoelectrodes | pt |
dc.type | article | pt |
dc.peerreviewed | yes | pt |
ua.distribution | international | pt |
degois.publication.firstPage | 2349 | pt |
degois.publication.issue | 8 | pt |
degois.publication.lastPage | 2359 | pt |
degois.publication.title | JOURNAL OF SOLID STATE ELECTROCHEMISTRY | pt |
degois.publication.volume | 17 | pt |
dc.date.embargo | 10000-01-01 | - |
dc.relation.publisherversion | 10.1007/s10008-013-2099-y | pt |
dc.identifier.doi | 10.1007/s10008-013-2099-y | pt |
Appears in Collections: | CICECO - Artigos |
Files in This Item:
File | Description | Size | Format | |
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Pulsed current electrodeposition of Zn-Ag2STiO2 nanocomposite films as potential photoelectrodes_10.1007s10008-013-2099-y.pdf | 998.75 kB | Adobe PDF |
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