Publication
Gold deposition from 1-butyl-1-methyl-pyrrolidinium dicyanamide ionic liquid at open-circuit and under potentiostatic control
| dc.contributor.author | Sá, A.I. De | |
| dc.contributor.author | Eugénio, S. | |
| dc.contributor.author | Quaresma, S. | |
| dc.contributor.author | Rangel, C. M. | |
| dc.contributor.author | Vilar, R. | |
| dc.date.accessioned | 2013-09-19T10:57:18Z | |
| dc.date.available | 2013-09-19T10:57:18Z | |
| dc.date.issued | 2013 | |
| dc.description.abstract | In this work, the deposition of gold on copper substrates from solutions of HAuCl4.3H2O in 1-butyl-1-methylpyrrolidinium dicyanamide was studied. Deposition was carried out in open-circuit and under potentiostatic control at temperatures from 293 to 353 K, in normal atmosphere, with deposition conditions allowing water from atmospheric absorption up to 0.8 wt.%. Films of gold were obtained by both methods. Deposition at open-circuit occurs by galvanic displacement mechanism. Involvement of Cu+ species in the electrodeposition process was suggested by cyclic voltammetry. Furthermore, copper incorporation in the gold films was confirmed by X-ray diffraction. SEM observation and XRD analysis show that films are nanocrystalline with a globular morphology except for the films formed under potentiostatic control at 353 K, which show a dendritic structure. The size of the crystallites determined by Scherrer's equation varies in the range from 6 to 25 nm. | por |
| dc.identifier.citation | Sá, A.I. Correia de; Eugénio, S.; Quaresma, S.; Rangel, C.M.; Vilar, R. Gold deposition from 1-butyl-1-methyl-pyrrolidinium dicyanamide ionic liquid at open-circuit and under potentiostatic control. In: Surface and Coatings Technology, 2013, Vol. 232, p. 645-651 | por |
| dc.identifier.issn | 0257-8972 | |
| dc.identifier.uri | http://hdl.handle.net/10400.9/1992 | |
| dc.language.iso | eng | por |
| dc.publisher | Elsevier | por |
| dc.relation.publisherversion | http://dx.doi.org/10.1016/j.surfcoat.2013.06.061 | por |
| dc.subject | Gold | por |
| dc.subject | Electrodeposition | por |
| dc.subject | Ionic liquids | por |
| dc.subject | Open-circuit deposition | por |
| dc.title | Gold deposition from 1-butyl-1-methyl-pyrrolidinium dicyanamide ionic liquid at open-circuit and under potentiostatic control | por |
| dc.type | journal article | |
| dspace.entity.type | Publication | |
| oaire.citation.endPage | 651 | por |
| oaire.citation.startPage | 645 | por |
| oaire.citation.title | Surface and Coatings Technology | por |
| oaire.citation.volume | 232 | por |
| person.familyName | Sá | |
| person.familyName | Rangel | |
| person.givenName | Ana | |
| person.givenName | Carmen M. | |
| person.identifier.ciencia-id | B615-CCF2-424E | |
| person.identifier.ciencia-id | AA13-FF7C-9E29 | |
| person.identifier.orcid | 0000-0003-1267-7994 | |
| person.identifier.orcid | 0000-0001-7996-8142 | |
| person.identifier.rid | D-5477-2011 | |
| person.identifier.scopus-author-id | 7006108156 | |
| rcaap.rights | openAccess | por |
| rcaap.type | article | por |
| relation.isAuthorOfPublication | 5d35b81a-2f1b-4051-b8bc-d1a4b0934a01 | |
| relation.isAuthorOfPublication | 804e595a-d539-46a2-ae78-6cadc8ca9457 | |
| relation.isAuthorOfPublication.latestForDiscovery | 804e595a-d539-46a2-ae78-6cadc8ca9457 |