Effect of phenolic compounds on the synthesis of gold nanoparticles and its catalytic activity in the reduction of nitro compounds

Detalhes bibliográficos
Autor(a) principal: Alegria, Elisabete
Data de Publicação: 2018
Outros Autores: Da Costa Ribeiro, Ana Paula, Mendes, Marta, Ferraria, Ana Maria, Rego, Ana, Pombeiro, Armando
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10400.21/8687
Resumo: Este trabalho foi financiado pelo Concurso Anual para Projetos de Investigação, Desenvolvimento, Inovação e Criação Artística (IDI&CA) 2016 do Instituto Politécnico de Lisboa. Código de referência IPL/2016/MechSynCat/ISEL
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spelling Effect of phenolic compounds on the synthesis of gold nanoparticles and its catalytic activity in the reduction of nitro compoundsGold nanoparticlesPhytochemicalsCatalysisReductionNitro compoundsEste trabalho foi financiado pelo Concurso Anual para Projetos de Investigação, Desenvolvimento, Inovação e Criação Artística (IDI&CA) 2016 do Instituto Politécnico de Lisboa. Código de referência IPL/2016/MechSynCat/ISELGold nanoparticles (AuNPs) were prepared using an eco-friendly approach in a single step by reduction of HAuCl4 with polyphenols from tea extracts, which act as both reducing and capping agents. The obtained AuNPs were characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), ultraviolet–visible spectroscopy (UV–vis), and X-ray photoelectron spectroscopy (XPS). They act as highly efficient catalysts in the reduction of various aromatic nitro compounds in aqueous solution. The effects of a variety of factors (e.g., reaction time, type and amount of reducing agent, shape, size, or amount of AuNPs) were studied towards the optimization of the processes. The total polyphenol content (TPC) was determined before and after the catalytic reaction and the results are discussed in terms of the tea extract percentage, the size of the AuNPs, and their catalytic activity. The reusability of the AuNP catalyst in the reduction of 4-nitrophenol was also tested. The reactions follow pseudo first-order kinetics.MDPIRCIPLAlegria, ElisabeteDa Costa Ribeiro, Ana PaulaMendes, MartaFerraria, Ana MariaRego, AnaPombeiro, Armando2020-07-01T00:30:11Z2018-052018-05-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.21/8687engALEGRIA, Elisabete C. B. A.; [et al] – Effect of phenolic compounds on the synthesis of gold nanoparticles and its catalytic activity in the reduction of nitro compounds. Nanomaterials. ISSN 2079-4991. Vol. 8, N.º 5 (2018), pp. 1-182079-4991https://doi:10.3390/nano8050320info: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:RCAAP2023-08-03T09:56:28Zoai:repositorio.ipl.pt:10400.21/8687Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T20:17:24.077001Repositório 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 Effect of phenolic compounds on the synthesis of gold nanoparticles and its catalytic activity in the reduction of nitro compounds
title Effect of phenolic compounds on the synthesis of gold nanoparticles and its catalytic activity in the reduction of nitro compounds
spellingShingle Effect of phenolic compounds on the synthesis of gold nanoparticles and its catalytic activity in the reduction of nitro compounds
Alegria, Elisabete
Gold nanoparticles
Phytochemicals
Catalysis
Reduction
Nitro compounds
title_short Effect of phenolic compounds on the synthesis of gold nanoparticles and its catalytic activity in the reduction of nitro compounds
title_full Effect of phenolic compounds on the synthesis of gold nanoparticles and its catalytic activity in the reduction of nitro compounds
title_fullStr Effect of phenolic compounds on the synthesis of gold nanoparticles and its catalytic activity in the reduction of nitro compounds
title_full_unstemmed Effect of phenolic compounds on the synthesis of gold nanoparticles and its catalytic activity in the reduction of nitro compounds
title_sort Effect of phenolic compounds on the synthesis of gold nanoparticles and its catalytic activity in the reduction of nitro compounds
author Alegria, Elisabete
author_facet Alegria, Elisabete
Da Costa Ribeiro, Ana Paula
Mendes, Marta
Ferraria, Ana Maria
Rego, Ana
Pombeiro, Armando
author_role author
author2 Da Costa Ribeiro, Ana Paula
Mendes, Marta
Ferraria, Ana Maria
Rego, Ana
Pombeiro, Armando
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv RCIPL
dc.contributor.author.fl_str_mv Alegria, Elisabete
Da Costa Ribeiro, Ana Paula
Mendes, Marta
Ferraria, Ana Maria
Rego, Ana
Pombeiro, Armando
dc.subject.por.fl_str_mv Gold nanoparticles
Phytochemicals
Catalysis
Reduction
Nitro compounds
topic Gold nanoparticles
Phytochemicals
Catalysis
Reduction
Nitro compounds
description Este trabalho foi financiado pelo Concurso Anual para Projetos de Investigação, Desenvolvimento, Inovação e Criação Artística (IDI&CA) 2016 do Instituto Politécnico de Lisboa. Código de referência IPL/2016/MechSynCat/ISEL
publishDate 2018
dc.date.none.fl_str_mv 2018-05
2018-05-01T00:00:00Z
2020-07-01T00:30:11Z
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/10400.21/8687
url http://hdl.handle.net/10400.21/8687
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv ALEGRIA, Elisabete C. B. A.; [et al] – Effect of phenolic compounds on the synthesis of gold nanoparticles and its catalytic activity in the reduction of nitro compounds. Nanomaterials. ISSN 2079-4991. Vol. 8, N.º 5 (2018), pp. 1-18
2079-4991
https://doi:10.3390/nano8050320
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 MDPI
publisher.none.fl_str_mv MDPI
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
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