Galvanic oxidation of bimetallic Zn-Fe nanoparticles for oxygen scavenging

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dc.contributor.authorCastro, A.por
dc.contributor.authorCarvalho, I.por
dc.contributor.authorMarques, L.por
dc.contributor.authorFerreira, P. J.por
dc.contributor.authorCavaleiro, A.por
dc.contributor.authorCarvalho, S.por
dc.contributor.authorVelasco, Sebastian Calderonpor
dc.date.accessioned2021-02-26T12:05:08Z
dc.date.available2021-02-26T12:05:08Z
dc.date.issued2021-01-30
dc.date.updated2021-02-26T11:51:11Z
dc.description.abstractBimetallic nanoparticles (NP) have demonstrated outstanding multifunctional characteristics, which depend on their size, distribution and composition. In this study, we show the possibility of tailoring the oxidation behavior of Zn-Fe bimetallic nanoparticles produced by magnetron sputtering and gas agglomeration system. Zn and Fe metals were coupled to promote faster oxidation of Zn, stimulating a galvanic mechanism due to the dissimilar corrosion potential in the nanoparticles. The results revealed Zn dissolution occurring at high humidity environments for bimetallic Zn-Fe nanoparticles where no intermix exists between Zn and Fe; however, such dissolution is excluded for ZnFe alloys. The effect of the galvanic couple on the Zn dissolution was confirmed by molecular dynamic simulations. This bimetallic system can be exploited as moisture-activated oxygen scavenger materials due to the acceleration in the oxidation mechanism.por
dc.description.sponsorshipThis research is sponsored by FEDER funds through the program COMPETE – Programa Operacional Factores de Competitividade and by the Portuguese Foundation for Science and Technology (FCT) in the framework of the Strategic Funding UID/FIS/04650/2019, and UID/ EMS/00285/2013 and in the framework of ERA-SIINN/0004/2013, PTDC/CTM-NAN/4242/2014 and PTDC/NAN-MAT/30789/2017 projects, and through IDMEC, under LAETA, project UIDB/50022/2020. This research was supported by Norte Regional Operational Program 2014-2020 (Norte2020) through the European Regional Development Fund (ERDF) Nanotechnology based functional solutions (NORTE-01- 0145-FEDER-000019) and through European Social Fund (FSE), under the National Doctoral Program in “Surfaces Engineering and Protection”, NORTE-08-5369-FSE-000047. The authors would like to acknowledge that this project received funding from the EU Framework Programme for Research and Innovation H2020, scheme COFUND – Cofunding of Regional, National and International Programmes, under Grant Agreement 713640. The authors also thank the financial support by Portuguese Foundation for Science and Technology (FCT) in the framework of the HEALTHYDENT (co-financed via FEDER (PT2020) POCI-01-0145-FEDER-030708 and FCT (PIDDAC)), in the framework of the ATRITO-0 (co-financed via FEDER (PT2020) POCI-01-0145-FEDER030446 and FCT (PIDDAC)) and in the framework of the project NANOXYPACK co-financed via FEDER (PT2020) POCI-01-0145-FEDER030789.por
dc.distributioninternationalpor
dc.identifier.doi10.1016/j.apsusc.2020.147896por
dc.identifier.issn0169-4332por
dc.identifier.urihttps://hdl.handle.net/1822/70448
dc.language.isoengpor
dc.peerreviewedyespor
dc.publisherElsevierpor
dc.relationinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UID%2FFIS%2F04650%2F2019/PTpor
dc.relationinfo:eu-repo/grantAgreement/FCT/5876/147405/PTpor
dc.relationinfo:eu-repo/grantAgreement/FCT/3599-PPCDT/138552/PTpor
dc.relationinfo:eu-repo/grantAgreement/FCT/9471 - RIDTI/PTDC%2FCTM-NAN%2F4242%2F2014/PTpor
dc.relationinfo:eu-repo/grantAgreement/FCT/9471 - RIDTI/PTDC%2FNAN-MAT%2F30789%2F2017/PTpor
dc.relationinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F50022%2F2020/PTpor
dc.relation.publisherversionhttps://www.sciencedirect.com/science/article/pii/S0169433220326532#!por
dc.rightsopenAccesspor
dc.subjectGalvanic potential, STEMpor
dc.subjectMoisture-activatedpor
dc.subjectPackagingpor
dc.subjectRelative humiditypor
dc.subject.wosScience & Technologypor
dc.titleGalvanic oxidation of bimetallic Zn-Fe nanoparticles for oxygen scavengingpor
dc.typearticle
dspace.entity.typePublicationen
oaire.citationVolume537por
sdum.export.identifier8974
sdum.journalApplied Surface Sciencepor

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