Easy and Fast Preparation of TiO2 - based Nanostructures Using Microwave Assisted Hydrothermal Synthesis

Detalhes bibliográficos
Autor(a) principal: Bregadiolli,Bruna Andressa
Data de Publicação: 2017
Outros Autores: Fernandes,Silvia Leticia, Graeff,Carlos Frederico de Oliveira
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Materials research (São Carlos. Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392017000400912
Resumo: TiO2 derivatives with distinct morphologies have been successfully obtained by microwave assisted hydrothermal synthesis in acidic and alkaline medium using mild conditions. Titanium tetraisopropoxide (TTIP) was used as precursor in different environmental conditions under low temperatures, inferior to 150 °C, and short synthesis times, from 2 to 60 min. X ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and N2 adsorption at 77 K (BET) were used to characterize the microstructural properties of the oxides. In the acidic synthesis the reaction time and temperature are not accompanied by significant changes in the structure of the material. However, in the basic conditions, the concentration of Na+ ions strongly influences the particle morphology and growth. The morphology of the nanoparticles shows irregular spheres in acidic conditions, while in alkaline medium, needle like structures are formed as well as aggregated nanotube-like structures synthesized in only 30 min. Besides the difference in the morphology and structure, in both systems, high surface area was obtained.
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spelling Easy and Fast Preparation of TiO2 - based Nanostructures Using Microwave Assisted Hydrothermal Synthesisnanostructurestitanium dioxidemicrowave assisted hydrothermal synthesiscrystal growthTiO2 derivatives with distinct morphologies have been successfully obtained by microwave assisted hydrothermal synthesis in acidic and alkaline medium using mild conditions. Titanium tetraisopropoxide (TTIP) was used as precursor in different environmental conditions under low temperatures, inferior to 150 °C, and short synthesis times, from 2 to 60 min. X ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and N2 adsorption at 77 K (BET) were used to characterize the microstructural properties of the oxides. In the acidic synthesis the reaction time and temperature are not accompanied by significant changes in the structure of the material. However, in the basic conditions, the concentration of Na+ ions strongly influences the particle morphology and growth. The morphology of the nanoparticles shows irregular spheres in acidic conditions, while in alkaline medium, needle like structures are formed as well as aggregated nanotube-like structures synthesized in only 30 min. Besides the difference in the morphology and structure, in both systems, high surface area was obtained.ABM, ABC, ABPol2017-08-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392017000400912Materials Research v.20 n.4 2017reponame:Materials research (São Carlos. Online)instname:Universidade Federal de São Carlos (UFSCAR)instacron:ABM ABC ABPOL10.1590/1980-5373-mr-2016-0684info:eu-repo/semantics/openAccessBregadiolli,Bruna AndressaFernandes,Silvia LeticiaGraeff,Carlos Frederico de Oliveiraeng2017-09-05T00:00:00Zoai:scielo:S1516-14392017000400912Revistahttp://www.scielo.br/mrPUBhttps://old.scielo.br/oai/scielo-oai.phpdedz@power.ufscar.br1980-53731516-1439opendoar:2017-09-05T00:00Materials research (São Carlos. Online) - Universidade Federal de São Carlos (UFSCAR)false
dc.title.none.fl_str_mv Easy and Fast Preparation of TiO2 - based Nanostructures Using Microwave Assisted Hydrothermal Synthesis
title Easy and Fast Preparation of TiO2 - based Nanostructures Using Microwave Assisted Hydrothermal Synthesis
spellingShingle Easy and Fast Preparation of TiO2 - based Nanostructures Using Microwave Assisted Hydrothermal Synthesis
Bregadiolli,Bruna Andressa
nanostructures
titanium dioxide
microwave assisted hydrothermal synthesis
crystal growth
title_short Easy and Fast Preparation of TiO2 - based Nanostructures Using Microwave Assisted Hydrothermal Synthesis
title_full Easy and Fast Preparation of TiO2 - based Nanostructures Using Microwave Assisted Hydrothermal Synthesis
title_fullStr Easy and Fast Preparation of TiO2 - based Nanostructures Using Microwave Assisted Hydrothermal Synthesis
title_full_unstemmed Easy and Fast Preparation of TiO2 - based Nanostructures Using Microwave Assisted Hydrothermal Synthesis
title_sort Easy and Fast Preparation of TiO2 - based Nanostructures Using Microwave Assisted Hydrothermal Synthesis
author Bregadiolli,Bruna Andressa
author_facet Bregadiolli,Bruna Andressa
Fernandes,Silvia Leticia
Graeff,Carlos Frederico de Oliveira
author_role author
author2 Fernandes,Silvia Leticia
Graeff,Carlos Frederico de Oliveira
author2_role author
author
dc.contributor.author.fl_str_mv Bregadiolli,Bruna Andressa
Fernandes,Silvia Leticia
Graeff,Carlos Frederico de Oliveira
dc.subject.por.fl_str_mv nanostructures
titanium dioxide
microwave assisted hydrothermal synthesis
crystal growth
topic nanostructures
titanium dioxide
microwave assisted hydrothermal synthesis
crystal growth
description TiO2 derivatives with distinct morphologies have been successfully obtained by microwave assisted hydrothermal synthesis in acidic and alkaline medium using mild conditions. Titanium tetraisopropoxide (TTIP) was used as precursor in different environmental conditions under low temperatures, inferior to 150 °C, and short synthesis times, from 2 to 60 min. X ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and N2 adsorption at 77 K (BET) were used to characterize the microstructural properties of the oxides. In the acidic synthesis the reaction time and temperature are not accompanied by significant changes in the structure of the material. However, in the basic conditions, the concentration of Na+ ions strongly influences the particle morphology and growth. The morphology of the nanoparticles shows irregular spheres in acidic conditions, while in alkaline medium, needle like structures are formed as well as aggregated nanotube-like structures synthesized in only 30 min. Besides the difference in the morphology and structure, in both systems, high surface area was obtained.
publishDate 2017
dc.date.none.fl_str_mv 2017-08-01
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=S1516-14392017000400912
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392017000400912
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/1980-5373-mr-2016-0684
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 ABM, ABC, ABPol
publisher.none.fl_str_mv ABM, ABC, ABPol
dc.source.none.fl_str_mv Materials Research v.20 n.4 2017
reponame:Materials research (São Carlos. Online)
instname:Universidade Federal de São Carlos (UFSCAR)
instacron:ABM ABC ABPOL
instname_str Universidade Federal de São Carlos (UFSCAR)
instacron_str ABM ABC ABPOL
institution ABM ABC ABPOL
reponame_str Materials research (São Carlos. Online)
collection Materials research (São Carlos. Online)
repository.name.fl_str_mv Materials research (São Carlos. Online) - Universidade Federal de São Carlos (UFSCAR)
repository.mail.fl_str_mv dedz@power.ufscar.br
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