Synthesis of Highly Ordered Mesoporous MCM-41: Selective External Functionalization by Time Control

Detalhes bibliográficos
Autor(a) principal: Silva,Ana Claudia P. da
Data de Publicação: 2019
Outros Autores: Cordeiro,Patrícia H. Y., Estevão,Bianca M., Caetano,Wilker, Eckert,Hellmut, Santin,Silvana M. O., Moisés,Murilo P., Hioka,Noboru, Tessaro,André L.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Journal of the Brazilian Chemical Society (Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532019000801599
Resumo: Sol-gel synthesis is commonly used to modify the surface of mesoporous silica nanoparticles (MSN) with organic groups through the co-condensation method. The template removal, and the site-controlled addition of organic groups and their partial occlusion inside the framework walls are still a challenge in the one-pot synthesis. Here, we optimize the synthesis of amino-modified MSN by the combination of efficient template removal methodology with the precise time of the amino precursor addition to achieve superb mesoporous material. The addition after the growth process produces a sample with a significantly higher amount of NH2 on the external surface when compared to the standard procedure. The template removal by reflux with isopropanol/H+ eliminated ca. 90% of cetyltrimethylammonium bromide (CTAB), and preserved the mechanical and thermal properties, even with thin walls (2.1 nm). The synthesized nanoparticles possess stability, appropriate size, and a positive surface. This makes them excellent nanocarriers, especially in the biomedical field.
id SBQ-2_8eca0d80713c2adb68f68a4eb8ff0690
oai_identifier_str oai:scielo:S0103-50532019000801599
network_acronym_str SBQ-2
network_name_str Journal of the Brazilian Chemical Society (Online)
repository_id_str
spelling Synthesis of Highly Ordered Mesoporous MCM-41: Selective External Functionalization by Time ControlMCM-41mesoporous silica nanoparticlesco-condensation methodtemplate removalSol-gel synthesis is commonly used to modify the surface of mesoporous silica nanoparticles (MSN) with organic groups through the co-condensation method. The template removal, and the site-controlled addition of organic groups and their partial occlusion inside the framework walls are still a challenge in the one-pot synthesis. Here, we optimize the synthesis of amino-modified MSN by the combination of efficient template removal methodology with the precise time of the amino precursor addition to achieve superb mesoporous material. The addition after the growth process produces a sample with a significantly higher amount of NH2 on the external surface when compared to the standard procedure. The template removal by reflux with isopropanol/H+ eliminated ca. 90% of cetyltrimethylammonium bromide (CTAB), and preserved the mechanical and thermal properties, even with thin walls (2.1 nm). The synthesized nanoparticles possess stability, appropriate size, and a positive surface. This makes them excellent nanocarriers, especially in the biomedical field.Sociedade Brasileira de Química2019-08-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532019000801599Journal of the Brazilian Chemical Society v.30 n.8 2019reponame:Journal of the Brazilian Chemical Society (Online)instname:Sociedade Brasileira de Química (SBQ)instacron:SBQ10.21577/0103-5053.20190058info:eu-repo/semantics/openAccessSilva,Ana Claudia P. daCordeiro,Patrícia H. Y.Estevão,Bianca M.Caetano,WilkerEckert,HellmutSantin,Silvana M. O.Moisés,Murilo P.Hioka,NoboruTessaro,André L.eng2019-08-08T00:00:00Zoai:scielo:S0103-50532019000801599Revistahttp://jbcs.sbq.org.brONGhttps://old.scielo.br/oai/scielo-oai.php||office@jbcs.sbq.org.br1678-47900103-5053opendoar:2019-08-08T00:00Journal of the Brazilian Chemical Society (Online) - Sociedade Brasileira de Química (SBQ)false
dc.title.none.fl_str_mv Synthesis of Highly Ordered Mesoporous MCM-41: Selective External Functionalization by Time Control
title Synthesis of Highly Ordered Mesoporous MCM-41: Selective External Functionalization by Time Control
spellingShingle Synthesis of Highly Ordered Mesoporous MCM-41: Selective External Functionalization by Time Control
Silva,Ana Claudia P. da
MCM-41
mesoporous silica nanoparticles
co-condensation method
template removal
title_short Synthesis of Highly Ordered Mesoporous MCM-41: Selective External Functionalization by Time Control
title_full Synthesis of Highly Ordered Mesoporous MCM-41: Selective External Functionalization by Time Control
title_fullStr Synthesis of Highly Ordered Mesoporous MCM-41: Selective External Functionalization by Time Control
title_full_unstemmed Synthesis of Highly Ordered Mesoporous MCM-41: Selective External Functionalization by Time Control
title_sort Synthesis of Highly Ordered Mesoporous MCM-41: Selective External Functionalization by Time Control
author Silva,Ana Claudia P. da
author_facet Silva,Ana Claudia P. da
Cordeiro,Patrícia H. Y.
Estevão,Bianca M.
Caetano,Wilker
Eckert,Hellmut
Santin,Silvana M. O.
Moisés,Murilo P.
Hioka,Noboru
Tessaro,André L.
author_role author
author2 Cordeiro,Patrícia H. Y.
Estevão,Bianca M.
Caetano,Wilker
Eckert,Hellmut
Santin,Silvana M. O.
Moisés,Murilo P.
Hioka,Noboru
Tessaro,André L.
author2_role author
author
author
author
author
author
author
author
dc.contributor.author.fl_str_mv Silva,Ana Claudia P. da
Cordeiro,Patrícia H. Y.
Estevão,Bianca M.
Caetano,Wilker
Eckert,Hellmut
Santin,Silvana M. O.
Moisés,Murilo P.
Hioka,Noboru
Tessaro,André L.
dc.subject.por.fl_str_mv MCM-41
mesoporous silica nanoparticles
co-condensation method
template removal
topic MCM-41
mesoporous silica nanoparticles
co-condensation method
template removal
description Sol-gel synthesis is commonly used to modify the surface of mesoporous silica nanoparticles (MSN) with organic groups through the co-condensation method. The template removal, and the site-controlled addition of organic groups and their partial occlusion inside the framework walls are still a challenge in the one-pot synthesis. Here, we optimize the synthesis of amino-modified MSN by the combination of efficient template removal methodology with the precise time of the amino precursor addition to achieve superb mesoporous material. The addition after the growth process produces a sample with a significantly higher amount of NH2 on the external surface when compared to the standard procedure. The template removal by reflux with isopropanol/H+ eliminated ca. 90% of cetyltrimethylammonium bromide (CTAB), and preserved the mechanical and thermal properties, even with thin walls (2.1 nm). The synthesized nanoparticles possess stability, appropriate size, and a positive surface. This makes them excellent nanocarriers, especially in the biomedical field.
publishDate 2019
dc.date.none.fl_str_mv 2019-08-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532019000801599
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532019000801599
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.21577/0103-5053.20190058
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Sociedade Brasileira de Química
publisher.none.fl_str_mv Sociedade Brasileira de Química
dc.source.none.fl_str_mv Journal of the Brazilian Chemical Society v.30 n.8 2019
reponame:Journal of the Brazilian Chemical Society (Online)
instname:Sociedade Brasileira de Química (SBQ)
instacron:SBQ
instname_str Sociedade Brasileira de Química (SBQ)
instacron_str SBQ
institution SBQ
reponame_str Journal of the Brazilian Chemical Society (Online)
collection Journal of the Brazilian Chemical Society (Online)
repository.name.fl_str_mv Journal of the Brazilian Chemical Society (Online) - Sociedade Brasileira de Química (SBQ)
repository.mail.fl_str_mv ||office@jbcs.sbq.org.br
_version_ 1750318182078349312