Investigation into the role of NaOH and calcium ions in the synthesis of calcium phosphate nanoshells
Autor(a) principal: | |
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Data de Publicação: | 2012 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Brazilian Journal of Chemical Engineering |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-66322012000100016 |
Resumo: | Calcium phosphate (CaP) nanoshells were prepared using negatively charged liposomes (1,2-dioleoyl-sn-glycero-3-phosphate sodium salt (DOPA)) as a template by base titration synthesis at various concentrations of NaOH and calcium ions. The elemental composition, morphology, particle size, particle size distribution and zeta potential of the products were determined via various characterisation techniques, such as energy-dispersive X-ray spectrometry (EDX), transmission electron microscopy (TEM), dynamic light scattering (DLS), laser Doppler velocimetry (LDV) and Fourier transform infrared spectroscopy (FTIR). The best results showed that stable spherical CaP nanoshells with a mean particle size of 197.5 ± 5.8 nm and a zeta potential of -34.5 ± 0.6 mV were successfully formed when 0.100 M sodium hydroxide (NaOH) and 0.100 M calcium ions were used. Moreover, an optimal pH of 10.52 and a final Ca/P molar ratio of 0.97 were achieved under these conditions. |
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Brazilian Journal of Chemical Engineering |
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Investigation into the role of NaOH and calcium ions in the synthesis of calcium phosphate nanoshellsCalcium phosphateNanoshellsLiposomesNaOHcalcium ionsCalcium phosphate (CaP) nanoshells were prepared using negatively charged liposomes (1,2-dioleoyl-sn-glycero-3-phosphate sodium salt (DOPA)) as a template by base titration synthesis at various concentrations of NaOH and calcium ions. The elemental composition, morphology, particle size, particle size distribution and zeta potential of the products were determined via various characterisation techniques, such as energy-dispersive X-ray spectrometry (EDX), transmission electron microscopy (TEM), dynamic light scattering (DLS), laser Doppler velocimetry (LDV) and Fourier transform infrared spectroscopy (FTIR). The best results showed that stable spherical CaP nanoshells with a mean particle size of 197.5 ± 5.8 nm and a zeta potential of -34.5 ± 0.6 mV were successfully formed when 0.100 M sodium hydroxide (NaOH) and 0.100 M calcium ions were used. Moreover, an optimal pH of 10.52 and a final Ca/P molar ratio of 0.97 were achieved under these conditions.Brazilian Society of Chemical Engineering2012-03-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-66322012000100016Brazilian Journal of Chemical Engineering v.29 n.1 2012reponame:Brazilian Journal of Chemical Engineeringinstname:Associação Brasileira de Engenharia Química (ABEQ)instacron:ABEQ10.1590/S0104-66322012000100016info:eu-repo/semantics/openAccessYeo,C. H.Zein,S. H. S.Ahmad,A. L.McPhail,D. S.eng2012-03-08T00:00:00Zoai:scielo:S0104-66322012000100016Revistahttps://www.scielo.br/j/bjce/https://old.scielo.br/oai/scielo-oai.phprgiudici@usp.br||rgiudici@usp.br1678-43830104-6632opendoar:2012-03-08T00:00Brazilian Journal of Chemical Engineering - Associação Brasileira de Engenharia Química (ABEQ)false |
dc.title.none.fl_str_mv |
Investigation into the role of NaOH and calcium ions in the synthesis of calcium phosphate nanoshells |
title |
Investigation into the role of NaOH and calcium ions in the synthesis of calcium phosphate nanoshells |
spellingShingle |
Investigation into the role of NaOH and calcium ions in the synthesis of calcium phosphate nanoshells Yeo,C. H. Calcium phosphate Nanoshells Liposomes NaOH calcium ions |
title_short |
Investigation into the role of NaOH and calcium ions in the synthesis of calcium phosphate nanoshells |
title_full |
Investigation into the role of NaOH and calcium ions in the synthesis of calcium phosphate nanoshells |
title_fullStr |
Investigation into the role of NaOH and calcium ions in the synthesis of calcium phosphate nanoshells |
title_full_unstemmed |
Investigation into the role of NaOH and calcium ions in the synthesis of calcium phosphate nanoshells |
title_sort |
Investigation into the role of NaOH and calcium ions in the synthesis of calcium phosphate nanoshells |
author |
Yeo,C. H. |
author_facet |
Yeo,C. H. Zein,S. H. S. Ahmad,A. L. McPhail,D. S. |
author_role |
author |
author2 |
Zein,S. H. S. Ahmad,A. L. McPhail,D. S. |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Yeo,C. H. Zein,S. H. S. Ahmad,A. L. McPhail,D. S. |
dc.subject.por.fl_str_mv |
Calcium phosphate Nanoshells Liposomes NaOH calcium ions |
topic |
Calcium phosphate Nanoshells Liposomes NaOH calcium ions |
description |
Calcium phosphate (CaP) nanoshells were prepared using negatively charged liposomes (1,2-dioleoyl-sn-glycero-3-phosphate sodium salt (DOPA)) as a template by base titration synthesis at various concentrations of NaOH and calcium ions. The elemental composition, morphology, particle size, particle size distribution and zeta potential of the products were determined via various characterisation techniques, such as energy-dispersive X-ray spectrometry (EDX), transmission electron microscopy (TEM), dynamic light scattering (DLS), laser Doppler velocimetry (LDV) and Fourier transform infrared spectroscopy (FTIR). The best results showed that stable spherical CaP nanoshells with a mean particle size of 197.5 ± 5.8 nm and a zeta potential of -34.5 ± 0.6 mV were successfully formed when 0.100 M sodium hydroxide (NaOH) and 0.100 M calcium ions were used. Moreover, an optimal pH of 10.52 and a final Ca/P molar ratio of 0.97 were achieved under these conditions. |
publishDate |
2012 |
dc.date.none.fl_str_mv |
2012-03-01 |
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=S0104-66322012000100016 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-66322012000100016 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S0104-66322012000100016 |
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 |
Brazilian Society of Chemical Engineering |
publisher.none.fl_str_mv |
Brazilian Society of Chemical Engineering |
dc.source.none.fl_str_mv |
Brazilian Journal of Chemical Engineering v.29 n.1 2012 reponame:Brazilian Journal of Chemical Engineering instname:Associação Brasileira de Engenharia Química (ABEQ) instacron:ABEQ |
instname_str |
Associação Brasileira de Engenharia Química (ABEQ) |
instacron_str |
ABEQ |
institution |
ABEQ |
reponame_str |
Brazilian Journal of Chemical Engineering |
collection |
Brazilian Journal of Chemical Engineering |
repository.name.fl_str_mv |
Brazilian Journal of Chemical Engineering - Associação Brasileira de Engenharia Química (ABEQ) |
repository.mail.fl_str_mv |
rgiudici@usp.br||rgiudici@usp.br |
_version_ |
1754213173537275904 |