Porphyrin-silica gel hybrids as effective and selective copper(II) adsorbents from industrial wastewater
Autor(a) principal: | |
---|---|
Data de Publicação: | 2023 |
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/10773/37812 |
Resumo: | Porphyrins are an important class of ligands with a tremendous ability to capture metal ions closely related to the rich coordination chemistry of porphyrins. Herein we use this characteristic to develop silica gel grafted derivatives for water remediation applications. Therefore, two porphyrin derivatives, one with three and the other with four mercaptopyridyl units were grafted on silica gel functionalized with 3-aminopropyltriethoxysilane. The new adsorbents Si3PyS and Si4PyS were characterized using a suitable set of techniques confirming the covalent attachment of the porphyrins to the silica surface. Additionally, microscopy and N2 adsorption analysis confirmed the structural integrity and preservation of the mesoporous structure of Si during surface modification. The results show that both hybrid materials exhibit good chemical and thermal stability and an outstanding Cu2+ removal capability, with a chemical adsorption capacity of 176.32 mg g–1 and 184.16 mg g–1, respectively. These materials have also been used in real water and industrial wastewater samples with minimal interference in their adsorption capabilities. Density Functional Theory calculations were performed to confirm the good performance of the hybrid materials Si3PyS and Si4PyS towards metal ions. The functionalization of silica surface with porphyrin-based ligands bearing additional binding motifs drastically improves the adsorption capability of the new hybrids towards metal ions. The presence of pyridyl units brings a meaningful advantage, since both porphyrin core and appended pyridyl groups are able of binding Cu2+ ions with high affinity, contributing to the enhancement of the chelating features of the adsorbents prepared when compared with other ligands supported in silica-based materials. |
id |
RCAP_09e0781867cd31a295f84ebbeb5c9735 |
---|---|
oai_identifier_str |
oai:ria.ua.pt:10773/37812 |
network_acronym_str |
RCAP |
network_name_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository_id_str |
7160 |
spelling |
Porphyrin-silica gel hybrids as effective and selective copper(II) adsorbents from industrial wastewaterHybrid materialsPorphyrinImmobilizationWater pollutionHazardous metal ionsAdsorptionPorphyrins are an important class of ligands with a tremendous ability to capture metal ions closely related to the rich coordination chemistry of porphyrins. Herein we use this characteristic to develop silica gel grafted derivatives for water remediation applications. Therefore, two porphyrin derivatives, one with three and the other with four mercaptopyridyl units were grafted on silica gel functionalized with 3-aminopropyltriethoxysilane. The new adsorbents Si3PyS and Si4PyS were characterized using a suitable set of techniques confirming the covalent attachment of the porphyrins to the silica surface. Additionally, microscopy and N2 adsorption analysis confirmed the structural integrity and preservation of the mesoporous structure of Si during surface modification. The results show that both hybrid materials exhibit good chemical and thermal stability and an outstanding Cu2+ removal capability, with a chemical adsorption capacity of 176.32 mg g–1 and 184.16 mg g–1, respectively. These materials have also been used in real water and industrial wastewater samples with minimal interference in their adsorption capabilities. Density Functional Theory calculations were performed to confirm the good performance of the hybrid materials Si3PyS and Si4PyS towards metal ions. The functionalization of silica surface with porphyrin-based ligands bearing additional binding motifs drastically improves the adsorption capability of the new hybrids towards metal ions. The presence of pyridyl units brings a meaningful advantage, since both porphyrin core and appended pyridyl groups are able of binding Cu2+ ions with high affinity, contributing to the enhancement of the chelating features of the adsorbents prepared when compared with other ligands supported in silica-based materials.Elsevier2023-05-19T14:59:37Z2023-06-01T00:00:00Z2023-06info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10773/37812eng10.1016/j.jece.2023.110097El Abiad, ChahrazadRadi, SmaailEl Massaoudi, MohamedLamsayah, MoradFigueira, FlávioFaustino, M. Amparo F.Neves, M. Graça P.M.S.Moura, Nuno M.M.info: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:RCAAP2024-02-22T12:13:53Zoai:ria.ua.pt:10773/37812Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T03:08:24.583184Repositório 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 |
Porphyrin-silica gel hybrids as effective and selective copper(II) adsorbents from industrial wastewater |
title |
Porphyrin-silica gel hybrids as effective and selective copper(II) adsorbents from industrial wastewater |
spellingShingle |
Porphyrin-silica gel hybrids as effective and selective copper(II) adsorbents from industrial wastewater El Abiad, Chahrazad Hybrid materials Porphyrin Immobilization Water pollution Hazardous metal ions Adsorption |
title_short |
Porphyrin-silica gel hybrids as effective and selective copper(II) adsorbents from industrial wastewater |
title_full |
Porphyrin-silica gel hybrids as effective and selective copper(II) adsorbents from industrial wastewater |
title_fullStr |
Porphyrin-silica gel hybrids as effective and selective copper(II) adsorbents from industrial wastewater |
title_full_unstemmed |
Porphyrin-silica gel hybrids as effective and selective copper(II) adsorbents from industrial wastewater |
title_sort |
Porphyrin-silica gel hybrids as effective and selective copper(II) adsorbents from industrial wastewater |
author |
El Abiad, Chahrazad |
author_facet |
El Abiad, Chahrazad Radi, Smaail El Massaoudi, Mohamed Lamsayah, Morad Figueira, Flávio Faustino, M. Amparo F. Neves, M. Graça P.M.S. Moura, Nuno M.M. |
author_role |
author |
author2 |
Radi, Smaail El Massaoudi, Mohamed Lamsayah, Morad Figueira, Flávio Faustino, M. Amparo F. Neves, M. Graça P.M.S. Moura, Nuno M.M. |
author2_role |
author author author author author author author |
dc.contributor.author.fl_str_mv |
El Abiad, Chahrazad Radi, Smaail El Massaoudi, Mohamed Lamsayah, Morad Figueira, Flávio Faustino, M. Amparo F. Neves, M. Graça P.M.S. Moura, Nuno M.M. |
dc.subject.por.fl_str_mv |
Hybrid materials Porphyrin Immobilization Water pollution Hazardous metal ions Adsorption |
topic |
Hybrid materials Porphyrin Immobilization Water pollution Hazardous metal ions Adsorption |
description |
Porphyrins are an important class of ligands with a tremendous ability to capture metal ions closely related to the rich coordination chemistry of porphyrins. Herein we use this characteristic to develop silica gel grafted derivatives for water remediation applications. Therefore, two porphyrin derivatives, one with three and the other with four mercaptopyridyl units were grafted on silica gel functionalized with 3-aminopropyltriethoxysilane. The new adsorbents Si3PyS and Si4PyS were characterized using a suitable set of techniques confirming the covalent attachment of the porphyrins to the silica surface. Additionally, microscopy and N2 adsorption analysis confirmed the structural integrity and preservation of the mesoporous structure of Si during surface modification. The results show that both hybrid materials exhibit good chemical and thermal stability and an outstanding Cu2+ removal capability, with a chemical adsorption capacity of 176.32 mg g–1 and 184.16 mg g–1, respectively. These materials have also been used in real water and industrial wastewater samples with minimal interference in their adsorption capabilities. Density Functional Theory calculations were performed to confirm the good performance of the hybrid materials Si3PyS and Si4PyS towards metal ions. The functionalization of silica surface with porphyrin-based ligands bearing additional binding motifs drastically improves the adsorption capability of the new hybrids towards metal ions. The presence of pyridyl units brings a meaningful advantage, since both porphyrin core and appended pyridyl groups are able of binding Cu2+ ions with high affinity, contributing to the enhancement of the chelating features of the adsorbents prepared when compared with other ligands supported in silica-based materials. |
publishDate |
2023 |
dc.date.none.fl_str_mv |
2023-05-19T14:59:37Z 2023-06-01T00:00:00Z 2023-06 |
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/10773/37812 |
url |
http://hdl.handle.net/10773/37812 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1016/j.jece.2023.110097 |
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.publisher.none.fl_str_mv |
Elsevier |
publisher.none.fl_str_mv |
Elsevier |
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 |
|
_version_ |
1799137736999829504 |