Publicação
Development of nanomaterials for cultural heritage conservation: evaluation on the degradation state of antique coins by spectroscopic techniques
| Resumo: | This work is presented in two complementary parts covering the two main fields on the study of cultural heritage. The first one is focussed on the analysis of a set of six dinheiros from the first Portuguese dynasty (13rd and 14th centuries). The coins were analyzed using μ-Energy Dispersive X-ray Fluorescence in order to evaluate their elemental composition, allowing to confirm in four of the coins a billon alloy (copper/silver) and in the remaining two a reduced content of silver. This fact is compatible with the social and economic Portuguese reality during D. Fernando I reign. The coins were further evaluated by means of X-ray Diffraction identifying natives copper and silver, as well as some of their degradation products, such as cuprite, tenorite, malachite, nantokite and atacamite and on the numisms with high silver content, chlorargyrite. By making use of Scanning Electron Microscopy/Energy Dispersive Spectroscopy the morphological analysis on the coins surface was performed evidencing the corroded surface and allowing to identify different morphologies corresponding to copper/copper oxides and silver/silver chloride phases. On the second part, several calcium carbonate (CaCO3) and calcium hydroxide functionalized nanoparticles were synthesized, purified and physicochemical characterized, in order to study their application by dispersion, on manuscripts and its similar for conservation purposes. The effect of different percentages of the functionalizing agent (dodecanoic acid) was investigated. Results from the visual and turbidimetry analyses showed that the dispersions were not stable for the proposed end. By making use of Attenuated Total Reflectance and X-ray Diffraction was possible to conclude that the acid is present on the final CaCO3 product. Scanning Electron Microscopy allowed to prove the morphological changes on the powders particles and made clear the shortage of nano-objects. The followed route is not effective regarding the synthesis of nanoparticles which may justify the instability of the dispersions. |
|---|---|
| Autores principais: | Oliveira, Maria Inês Baião Ramos de |
| Assunto: | Corrosão Moedas Nanopartículas XRF XRD SEM/EDS Turbidimetria ATR Teses de mestrado - 2014 |
| Ano: | 2014 |
| País: | Portugal |
| Tipo de documento: | dissertação de mestrado |
| Tipo de acesso: | acesso aberto |
| Instituição associada: | Universidade de Lisboa |
| Idioma: | inglês |
| Origem: | Repositório da Universidade de Lisboa |
| _version_ | 1866811230806605824 |
|---|---|
| author | Oliveira, Maria Inês Baião Ramos de |
| author_facet | Oliveira, Maria Inês Baião Ramos de |
| author_role | author |
| contributor_name_str_mv | Jorge, Maria da Estrela Borges de Melo, 1960- Carvalho, Maria Luísa, 1950- Repositório Científico de Acesso Aberto da ULisboa |
| country_str | PT |
| creators_json_txt | [{\"Person.name\":\"Oliveira, Maria Inês Baião Ramos de\"}] |
| datacite.contributors.contributor.contributorName.fl_str_mv | Jorge, Maria da Estrela Borges de Melo, 1960- Carvalho, Maria Luísa, 1950- Repositório Científico de Acesso Aberto da ULisboa |
| datacite.creators.creator.creatorName.fl_str_mv | Oliveira, Maria Inês Baião Ramos de |
| datacite.date.Accepted.fl_str_mv | 2014-01-01T00:00:00Z |
| datacite.date.available.fl_str_mv | 2014-11-07T14:03:10Z |
| datacite.date.embargoed.fl_str_mv | 2014-11-07T14:03:10Z |
| datacite.rights.fl_str_mv | http://purl.org/coar/access_right/c_abf2 |
| datacite.subjects.subject.fl_str_mv | Corrosão Moedas Nanopartículas XRF XRD SEM/EDS Turbidimetria ATR Teses de mestrado - 2014 |
| datacite.titles.title.fl_str_mv | Development of nanomaterials for cultural heritage conservation: evaluation on the degradation state of antique coins by spectroscopic techniques |
| dc.contributor.none.fl_str_mv | Jorge, Maria da Estrela Borges de Melo, 1960- Carvalho, Maria Luísa, 1950- Repositório Científico de Acesso Aberto da ULisboa |
| dc.creator.none.fl_str_mv | Oliveira, Maria Inês Baião Ramos de |
| dc.date.Accepted.fl_str_mv | 2014-01-01T00:00:00Z |
| dc.date.available.fl_str_mv | 2014-11-07T14:03:10Z |
| dc.date.embargoed.fl_str_mv | 2014-11-07T14:03:10Z |
| dc.format.none.fl_str_mv | application/pdf |
| dc.identifier.none.fl_str_mv | http://hdl.handle.net/10451/12389 |
| dc.language.none.fl_str_mv | eng |
| dc.rights.none.fl_str_mv | http://purl.org/coar/access_right/c_abf2 |
| dc.subject.none.fl_str_mv | Corrosão Moedas Nanopartículas XRF XRD SEM/EDS Turbidimetria ATR Teses de mestrado - 2014 |
| dc.title.fl_str_mv | Development of nanomaterials for cultural heritage conservation: evaluation on the degradation state of antique coins by spectroscopic techniques |
| dc.type.none.fl_str_mv | http://purl.org/coar/resource_type/c_bdcc |
| description | This work is presented in two complementary parts covering the two main fields on the study of cultural heritage. The first one is focussed on the analysis of a set of six dinheiros from the first Portuguese dynasty (13rd and 14th centuries). The coins were analyzed using μ-Energy Dispersive X-ray Fluorescence in order to evaluate their elemental composition, allowing to confirm in four of the coins a billon alloy (copper/silver) and in the remaining two a reduced content of silver. This fact is compatible with the social and economic Portuguese reality during D. Fernando I reign. The coins were further evaluated by means of X-ray Diffraction identifying natives copper and silver, as well as some of their degradation products, such as cuprite, tenorite, malachite, nantokite and atacamite and on the numisms with high silver content, chlorargyrite. By making use of Scanning Electron Microscopy/Energy Dispersive Spectroscopy the morphological analysis on the coins surface was performed evidencing the corroded surface and allowing to identify different morphologies corresponding to copper/copper oxides and silver/silver chloride phases. On the second part, several calcium carbonate (CaCO3) and calcium hydroxide functionalized nanoparticles were synthesized, purified and physicochemical characterized, in order to study their application by dispersion, on manuscripts and its similar for conservation purposes. The effect of different percentages of the functionalizing agent (dodecanoic acid) was investigated. Results from the visual and turbidimetry analyses showed that the dispersions were not stable for the proposed end. By making use of Attenuated Total Reflectance and X-ray Diffraction was possible to conclude that the acid is present on the final CaCO3 product. Scanning Electron Microscopy allowed to prove the morphological changes on the powders particles and made clear the shortage of nano-objects. The followed route is not effective regarding the synthesis of nanoparticles which may justify the instability of the dispersions. |
| dirty | 0 |
| eu_rights_str_mv | openAccess |
| format | masterThesis |
| fulltext.url.fl_str_mv | https://repositorio.ulisboa.pt/bitstreams/fc5b9562-a240-4865-a868-b373877020d0/download |
| id | ul_dcbeb0ffcaa6aa20939bab4592ef256f |
| identifier.url.fl_str_mv | http://hdl.handle.net/10451/12389 |
| instacron_str | ul |
| institution | Universidade de Lisboa |
| instname_str | Universidade de Lisboa |
| language | eng |
| network_acronym_str | ul |
| network_name_str | Repositório da Universidade de Lisboa |
| oai_identifier_str | oai:repositorio.ulisboa.pt:10451/12389 |
| organization_str_mv | urn:organizationAcronym:ul |
| person_str_mv | Oliveira, Maria Inês Baião Ramos de |
| publishDate | 2014 |
| reponame_str | Repositório da Universidade de Lisboa |
| repository_id_str | urn:repositoryAcronym:ul |
| service_str_mv | urn:repositoryAcronym:ul |
| spelling | engporThis work is presented in two complementary parts covering the two main fields on the study of cultural heritage. The first one is focussed on the analysis of a set of six dinheiros from the first Portuguese dynasty (13rd and 14th centuries). The coins were analyzed using μ-Energy Dispersive X-ray Fluorescence in order to evaluate their elemental composition, allowing to confirm in four of the coins a billon alloy (copper/silver) and in the remaining two a reduced content of silver. This fact is compatible with the social and economic Portuguese reality during D. Fernando I reign. The coins were further evaluated by means of X-ray Diffraction identifying natives copper and silver, as well as some of their degradation products, such as cuprite, tenorite, malachite, nantokite and atacamite and on the numisms with high silver content, chlorargyrite. By making use of Scanning Electron Microscopy/Energy Dispersive Spectroscopy the morphological analysis on the coins surface was performed evidencing the corroded surface and allowing to identify different morphologies corresponding to copper/copper oxides and silver/silver chloride phases. On the second part, several calcium carbonate (CaCO3) and calcium hydroxide functionalized nanoparticles were synthesized, purified and physicochemical characterized, in order to study their application by dispersion, on manuscripts and its similar for conservation purposes. The effect of different percentages of the functionalizing agent (dodecanoic acid) was investigated. Results from the visual and turbidimetry analyses showed that the dispersions were not stable for the proposed end. By making use of Attenuated Total Reflectance and X-ray Diffraction was possible to conclude that the acid is present on the final CaCO3 product. Scanning Electron Microscopy allowed to prove the morphological changes on the powders particles and made clear the shortage of nano-objects. The followed route is not effective regarding the synthesis of nanoparticles which may justify the instability of the dispersions.application/pdfporDevelopment of nanomaterials for cultural heritage conservation: evaluation on the degradation state of antique coins by spectroscopic techniquesOliveira, Maria Inês Baião Ramos deJorge, Maria da Estrela Borges de Melo, 1960-Carvalho, Maria Luísa, 1950-HostingInstitutionOrganizationalRepositório Científico de Acesso Aberto da ULisboae-mailmailto:repositorio@reitoria.ulisboa.ptrepositorio@reitoria.ulisboa.ptURNurn:tid:2013560232014-11-07T14:03:10Z201420142014-01-01T00:00:00ZHandlehttp://hdl.handle.net/10451/12389http://purl.org/coar/access_right/c_abf2open accessCorrosãoMoedasNanopartículasXRFXRDSEM/EDSTurbidimetriaATRTeses de mestrado - 20146106381 bytesliteraturehttp://purl.org/coar/resource_type/c_bdccmaster thesishttp://purl.org/coar/access_right/c_abf2application/pdffulltexthttps://repositorio.ulisboa.pt/bitstreams/fc5b9562-a240-4865-a868-b373877020d0/download |
| spellingShingle | Development of nanomaterials for cultural heritage conservation: evaluation on the degradation state of antique coins by spectroscopic techniques Oliveira, Maria Inês Baião Ramos de Corrosão Moedas Nanopartículas XRF XRD SEM/EDS Turbidimetria ATR Teses de mestrado - 2014 |
| status | SINGLETON |
| subject.fl_str_mv | Corrosão Moedas Nanopartículas XRF XRD SEM/EDS Turbidimetria ATR Teses de mestrado - 2014 |
| title | Development of nanomaterials for cultural heritage conservation: evaluation on the degradation state of antique coins by spectroscopic techniques |
| title_full | Development of nanomaterials for cultural heritage conservation: evaluation on the degradation state of antique coins by spectroscopic techniques |
| title_fullStr | Development of nanomaterials for cultural heritage conservation: evaluation on the degradation state of antique coins by spectroscopic techniques |
| title_full_unstemmed | Development of nanomaterials for cultural heritage conservation: evaluation on the degradation state of antique coins by spectroscopic techniques |
| title_short | Development of nanomaterials for cultural heritage conservation: evaluation on the degradation state of antique coins by spectroscopic techniques |
| title_sort | Development of nanomaterials for cultural heritage conservation: evaluation on the degradation state of antique coins by spectroscopic techniques |
| topic | Corrosão Moedas Nanopartículas XRF XRD SEM/EDS Turbidimetria ATR Teses de mestrado - 2014 |
| topic_facet | Corrosão Moedas Nanopartículas XRF XRD SEM/EDS Turbidimetria ATR Teses de mestrado - 2014 |
| url | http://hdl.handle.net/10451/12389 |
| visible | 1 |