Biomimetic calcium carbonate with hierarchical porosity produced using cork as a sustainable template agent
Autor(a) principal: | |
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Data de Publicação: | 2020 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10773/36883 |
Resumo: | Calcium carbonate has many applications in different fields; its use in environment remediation is particularly considered, due to its non-toxicity and potentially high efficiency. The structure, morphology and surface features of calcium carbonate can greatly affect its performance. Hierarchical porosity, in particular, can be beneficial for several functional properties. In this study, we report the synthesis of biomorphic calcium carbonate using a sustainable template agent – waste cork powder. Pyrolysed cork powder was infiltrated by an appropriate calcium-containing salt and successively thermally treated. Selected precursors, different impregnation-solution concentrations and thermal conditions were tested. The resulting materials were characterised by XRD, Raman spectroscopy and SEM. Surface area and porosity features were studied by BET analysis, with a detailed study on the effect of synthesis on the mesoporosity of the materials, average sizes varying between 4−15 nm. The most valuable results were achieved with calcium acetate followed by pyrolysis performed for relatively short time period. This maintained the porous 3D honeycomb cork structure made of ∼20 μm hexagonal cells, while consisting of highly mesoporous single-phase CaCO3. Such samples showed the highest surface area ever reported for CaCO3 prepared using a plant-based template; moreover, it also exhibited a dual-scale hierarchical porosity as, in addition to micrometer scale cellular macroporosity, it contained a significant mesoporosity in the cell walls, with a very narrow range of 3.6–3.9 nm. These promising characteristics enable the potential employment of cork-derived CaCO3 for environment remediation. |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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7160 |
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Biomimetic calcium carbonate with hierarchical porosity produced using cork as a sustainable template agentCalcium carbonateCorkPorosityBiomimeticEnvironment remediationCalcium carbonate has many applications in different fields; its use in environment remediation is particularly considered, due to its non-toxicity and potentially high efficiency. The structure, morphology and surface features of calcium carbonate can greatly affect its performance. Hierarchical porosity, in particular, can be beneficial for several functional properties. In this study, we report the synthesis of biomorphic calcium carbonate using a sustainable template agent – waste cork powder. Pyrolysed cork powder was infiltrated by an appropriate calcium-containing salt and successively thermally treated. Selected precursors, different impregnation-solution concentrations and thermal conditions were tested. The resulting materials were characterised by XRD, Raman spectroscopy and SEM. Surface area and porosity features were studied by BET analysis, with a detailed study on the effect of synthesis on the mesoporosity of the materials, average sizes varying between 4−15 nm. The most valuable results were achieved with calcium acetate followed by pyrolysis performed for relatively short time period. This maintained the porous 3D honeycomb cork structure made of ∼20 μm hexagonal cells, while consisting of highly mesoporous single-phase CaCO3. Such samples showed the highest surface area ever reported for CaCO3 prepared using a plant-based template; moreover, it also exhibited a dual-scale hierarchical porosity as, in addition to micrometer scale cellular macroporosity, it contained a significant mesoporosity in the cell walls, with a very narrow range of 3.6–3.9 nm. These promising characteristics enable the potential employment of cork-derived CaCO3 for environment remediation.2023-04-04T15:01:32Z2020-02-01T00:00:00Z2020-02-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10773/36883eng10.1016/j.jece.2019.103594Scalera, FrancescaCarbone, LuigiBettini, SimonaPullar, Robert C.Piccirillo, Clarainfo:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2024-05-06T04:44:09Zoai:ria.ua.pt:10773/36883Portal AgregadorONGhttps://www.rcaap.pt/oai/openairemluisa.alvim@gmail.comopendoar:71602024-05-06T04:44:09Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Biomimetic calcium carbonate with hierarchical porosity produced using cork as a sustainable template agent |
title |
Biomimetic calcium carbonate with hierarchical porosity produced using cork as a sustainable template agent |
spellingShingle |
Biomimetic calcium carbonate with hierarchical porosity produced using cork as a sustainable template agent Scalera, Francesca Calcium carbonate Cork Porosity Biomimetic Environment remediation |
title_short |
Biomimetic calcium carbonate with hierarchical porosity produced using cork as a sustainable template agent |
title_full |
Biomimetic calcium carbonate with hierarchical porosity produced using cork as a sustainable template agent |
title_fullStr |
Biomimetic calcium carbonate with hierarchical porosity produced using cork as a sustainable template agent |
title_full_unstemmed |
Biomimetic calcium carbonate with hierarchical porosity produced using cork as a sustainable template agent |
title_sort |
Biomimetic calcium carbonate with hierarchical porosity produced using cork as a sustainable template agent |
author |
Scalera, Francesca |
author_facet |
Scalera, Francesca Carbone, Luigi Bettini, Simona Pullar, Robert C. Piccirillo, Clara |
author_role |
author |
author2 |
Carbone, Luigi Bettini, Simona Pullar, Robert C. Piccirillo, Clara |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Scalera, Francesca Carbone, Luigi Bettini, Simona Pullar, Robert C. Piccirillo, Clara |
dc.subject.por.fl_str_mv |
Calcium carbonate Cork Porosity Biomimetic Environment remediation |
topic |
Calcium carbonate Cork Porosity Biomimetic Environment remediation |
description |
Calcium carbonate has many applications in different fields; its use in environment remediation is particularly considered, due to its non-toxicity and potentially high efficiency. The structure, morphology and surface features of calcium carbonate can greatly affect its performance. Hierarchical porosity, in particular, can be beneficial for several functional properties. In this study, we report the synthesis of biomorphic calcium carbonate using a sustainable template agent – waste cork powder. Pyrolysed cork powder was infiltrated by an appropriate calcium-containing salt and successively thermally treated. Selected precursors, different impregnation-solution concentrations and thermal conditions were tested. The resulting materials were characterised by XRD, Raman spectroscopy and SEM. Surface area and porosity features were studied by BET analysis, with a detailed study on the effect of synthesis on the mesoporosity of the materials, average sizes varying between 4−15 nm. The most valuable results were achieved with calcium acetate followed by pyrolysis performed for relatively short time period. This maintained the porous 3D honeycomb cork structure made of ∼20 μm hexagonal cells, while consisting of highly mesoporous single-phase CaCO3. Such samples showed the highest surface area ever reported for CaCO3 prepared using a plant-based template; moreover, it also exhibited a dual-scale hierarchical porosity as, in addition to micrometer scale cellular macroporosity, it contained a significant mesoporosity in the cell walls, with a very narrow range of 3.6–3.9 nm. These promising characteristics enable the potential employment of cork-derived CaCO3 for environment remediation. |
publishDate |
2020 |
dc.date.none.fl_str_mv |
2020-02-01T00:00:00Z 2020-02-01 2023-04-04T15:01:32Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10773/36883 |
url |
http://hdl.handle.net/10773/36883 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1016/j.jece.2019.103594 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
instname_str |
Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
instacron_str |
RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
repository.mail.fl_str_mv |
mluisa.alvim@gmail.com |
_version_ |
1817543847987642368 |