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Thermoelectric Properties of Tetrahedrites Produced from Mixtures of Natural and Synthetic Materials

2025-03Journal article Open access
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datacite.subject.fosCiências Naturais::Ciências da Terra e do Ambiente
datacite.subject.fosEngenharia e Tecnologia::Engenharia dos Materiais
datacite.subject.sdg12:Produção e Consumo Sustentáveis
dc.contributor.authorSantos, Beatriz
dc.contributor.authorEsperto, Luís
dc.contributor.authorFigueira Vasques, Isabel
dc.contributor.authorMascarenhas, João
dc.contributor.authorLopes, E.B.
dc.contributor.authorSalgueiro, Rute
dc.contributor.authorSilva, Teresa
dc.contributor.authorCorreia, Jose B.
dc.contributor.authorde Oliveira, Daniel Pipa Soares
dc.contributor.authorPereira Gonçalves, Antonio
dc.contributor.authorNeves, Filipe
dc.date.accessioned2025-04-09T14:22:10Z
dc.date.available2025-04-09T14:22:10Z
dc.date.issued2025-03
dc.description.abstractABSTRACT: Thermoelectric materials have considerable potential in the mitigation of the global energy crisis, through their ability to convert heat into electricity. This study aims to valorize natural resources, and potentially reduce production costs, by incorporating tetrahedrite-tennantite (td) ores from the Portuguese Iberian Pyrite Belt into synthetic samples. The ore samples were collected in a mine waste at Barrig & atilde;o and as "dirty-copper" pockets of ore from the Neves Corvo mine. Subsequently, high-energy ball milling and hot pressing were employed in the production of thermoelectric materials. These are characterized by XRD, SEM/EDS, and thermoelectrical properties. The complete dissolution of the dump material sulfides with the synthetic tetrahedrite constituents led to an increase in the amount of the tetrahedrite-tennantite phase, which was made up of a tetrahedrite-tennantite-(Fe) solid solution. The thermoelectric characterization of these materials is provided, revealing that most of the combined synthetic ore samples displayed better results than the pristine tetrahedrite, mostly due to higher Seebeck coefficient values. Furthermore, the best thermoelectric performance is achieved with 10% of ore, where a power factor of 268 mu W.K-2.m-1 is reached at room temperature.eng
dc.identifier.citationSantos, B., Esperto, L., Figueira, I., Mascarenhas, J., Lopes, E., Salgueiro, R., Silva, T., Correia, J.B., Oliveira, D., Gonçalves, A.P. & Neves, F. (2025) Thermoelectric Properties of Tetrahedrites Produced from Mixtures of Natural and Synthetic Materials. In: Materials, 2025, vol. 18(6), article 1375. https://doi.org/10.3390/ma18061375
dc.identifier.doi10.3390/ma18061375
dc.identifier.eissn1996-1944
dc.identifier.urihttp://hdl.handle.net/10400.9/5640
dc.language.isoeng
dc.peerreviewedyes
dc.publisherMDPI
dc.relationLocal Resources for Multifunctional Tetrahedrite-based Energy-Harvesting Applications
dc.relationCentre for Nuclear Sciences and Technologies
dc.relation.hasversionhttps://www.mdpi.com/1996-1944/18/6/1375
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subjectMaterials
dc.subjectTetrahedrite
dc.subjectThermoelectric
dc.subjectMechanochemical synthesis
dc.subjectIberian Pyrite Belt (IPB)
dc.subjectElectrical resistivity
dc.titleThermoelectric Properties of Tetrahedrites Produced from Mixtures of Natural and Synthetic Materialseng
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleLocal Resources for Multifunctional Tetrahedrite-based Energy-Harvesting Applications
oaire.awardTitleCentre for Nuclear Sciences and Technologies
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/3599-PPCDT/PTDC%2FEAM-PEC%2F29905%2F2017/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UID%2FMulti%2F04349%2F2019/PT
oaire.citation.issue6
oaire.citation.titleMaterials
oaire.citation.volume18
oaire.fundingStream3599-PPCDT
oaire.fundingStream6817 - DCRRNI ID
oaire.versionhttp://purl.org/coar/version/c_970fb48d4fbd8a85
person.familyNameFigueira Vasques
person.familyNameMascarenhas
person.familyNameSalgueiro
person.familyNameSilva
person.familyNameCorreia
person.familyNamede Oliveira
person.familyNamePereira Gonçalves
person.familyNameNeves
person.givenNameIsabel
person.givenNameJoão
person.givenNameRute
person.givenNameTeresa
person.givenNameJose B.
person.givenNameDaniel Pipa Soares
person.givenNameAntonio
person.givenNameFilipe
person.identifier2216267
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person.identifier.ciencia-id1815-040B-3FEF
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person.identifier.orcid0000-0002-6338-8845
person.identifier.orcid0000-0003-2640-3038
person.identifier.orcid0000-0002-1251-053X
person.identifier.ridL-3318-2014
person.identifier.ridL-9359-2013
person.identifier.ridB-2849-2008
person.identifier.ridA-7836-2012
person.identifier.scopus-author-id7202364148
person.identifier.scopus-author-id7102086109
person.identifier.scopus-author-id7004435348
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
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