Synthesis of TiO2 Tubes Via Dissolution of TiOSO4 Rod Using H2O2
Autor(a) principal: | |
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Data de Publicação: | 2021 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1590/1980-5373-MR-2020-0377 http://hdl.handle.net/11449/209309 |
Resumo: | We demonstrate here for the first time an original and facile approach to preparing titanium oxide (TiO2) tubes using hydrogen peroxide (H2O2) and titanyl (IV) oxysulfate (TiOSO4) as sacrificial templates. The method involves dissolving TiOSO4 powder in H2O2 solution and subsequently applying thermal treatment on the resulting amorphous precipitate. Prepared samples were characterized by X-ray diffraction, scanning electron microscopy (SEM) images, thermogravimetric (TG) analysis, and UV-vis analysis. Experimental results indicated that the samples exhibit tube-like structures with lengths of approximately 1.9 mm in diameter and 11.5 mm in length. Anatase and rutile phases were formed after annealing at different temperatures in air. The crystallite size estimated by Rietveld refinement showed an increase from 34.69 to 354.28 nm with an increase in the annealing temperature from 600 to 1000 ?C. At the same time, the band gap values decreased from 3.14 to 2.97 eV. The electron density maps were calculated, and the electronic density was observed to increase from 497.56 e- ?-2 (600 ?C) to 533.10e- ?-2 (740 ?C) and decrease with the annealing temperature of samples. A possible mechanism for the formation of TiO2 tubes was proposed. <comment>Superscript/Subscript Available</comment |
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Synthesis of TiO2 Tubes Via Dissolution of TiOSO4 Rod Using H2O2TiO2 tubestitanyl sulfatetemplate-freesacrificial templateWe demonstrate here for the first time an original and facile approach to preparing titanium oxide (TiO2) tubes using hydrogen peroxide (H2O2) and titanyl (IV) oxysulfate (TiOSO4) as sacrificial templates. The method involves dissolving TiOSO4 powder in H2O2 solution and subsequently applying thermal treatment on the resulting amorphous precipitate. Prepared samples were characterized by X-ray diffraction, scanning electron microscopy (SEM) images, thermogravimetric (TG) analysis, and UV-vis analysis. Experimental results indicated that the samples exhibit tube-like structures with lengths of approximately 1.9 mm in diameter and 11.5 mm in length. Anatase and rutile phases were formed after annealing at different temperatures in air. The crystallite size estimated by Rietveld refinement showed an increase from 34.69 to 354.28 nm with an increase in the annealing temperature from 600 to 1000 ?C. At the same time, the band gap values decreased from 3.14 to 2.97 eV. The electron density maps were calculated, and the electronic density was observed to increase from 497.56 e- ?-2 (600 ?C) to 533.10e- ?-2 (740 ?C) and decrease with the annealing temperature of samples. A possible mechanism for the formation of TiO2 tubes was proposed. <comment>Superscript/Subscript Available</commentFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Univ Estadual Paulista, Fac Engn, Ilha Solteira, SP, BrazilUniv Fed Mato Grosso, Dept Quim, Lab Computac Mat LCM, Cuiaba, MT, BrazilUniv Estadual Paulista, Fac Engn, Ilha Solteira, SP, BrazilFAPESP: 2018/14052-6CNPq: 427161/2016-9Univ Fed Sao Carlos, Dept Engenharia MaterialsUniversidade Estadual Paulista (Unesp)Universidade Federal de Mato Grosso do Sul (UFMS)Montanhera, Maykon A. [UNESP]Venancio, Ricardo H. D.Pereira, Eder Alves [UNESP]Freitas, Renato G.Paula, Fernando R. de [UNESP]2021-06-25T11:55:49Z2021-06-25T11:55:49Z2021-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article8application/pdfhttp://dx.doi.org/10.1590/1980-5373-MR-2020-0377Materials Research-ibero-american Journal Of Materials. Sao Carlos: Univ Fed Sao Carlos, Dept Engenharia Materials, v. 24, n. 2, 8 p., 2021.1516-1439http://hdl.handle.net/11449/20930910.1590/1980-5373-MR-2020-0377S1516-14392021000200225WOS:000636798700001S1516-14392021000200225.pdfWeb of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengMaterials Research-ibero-american Journal Of Materialsinfo:eu-repo/semantics/openAccess2023-11-20T06:09:46Zoai:repositorio.unesp.br:11449/209309Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T18:10:48.080332Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Synthesis of TiO2 Tubes Via Dissolution of TiOSO4 Rod Using H2O2 |
title |
Synthesis of TiO2 Tubes Via Dissolution of TiOSO4 Rod Using H2O2 |
spellingShingle |
Synthesis of TiO2 Tubes Via Dissolution of TiOSO4 Rod Using H2O2 Montanhera, Maykon A. [UNESP] TiO2 tubes titanyl sulfate template-free sacrificial template |
title_short |
Synthesis of TiO2 Tubes Via Dissolution of TiOSO4 Rod Using H2O2 |
title_full |
Synthesis of TiO2 Tubes Via Dissolution of TiOSO4 Rod Using H2O2 |
title_fullStr |
Synthesis of TiO2 Tubes Via Dissolution of TiOSO4 Rod Using H2O2 |
title_full_unstemmed |
Synthesis of TiO2 Tubes Via Dissolution of TiOSO4 Rod Using H2O2 |
title_sort |
Synthesis of TiO2 Tubes Via Dissolution of TiOSO4 Rod Using H2O2 |
author |
Montanhera, Maykon A. [UNESP] |
author_facet |
Montanhera, Maykon A. [UNESP] Venancio, Ricardo H. D. Pereira, Eder Alves [UNESP] Freitas, Renato G. Paula, Fernando R. de [UNESP] |
author_role |
author |
author2 |
Venancio, Ricardo H. D. Pereira, Eder Alves [UNESP] Freitas, Renato G. Paula, Fernando R. de [UNESP] |
author2_role |
author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) Universidade Federal de Mato Grosso do Sul (UFMS) |
dc.contributor.author.fl_str_mv |
Montanhera, Maykon A. [UNESP] Venancio, Ricardo H. D. Pereira, Eder Alves [UNESP] Freitas, Renato G. Paula, Fernando R. de [UNESP] |
dc.subject.por.fl_str_mv |
TiO2 tubes titanyl sulfate template-free sacrificial template |
topic |
TiO2 tubes titanyl sulfate template-free sacrificial template |
description |
We demonstrate here for the first time an original and facile approach to preparing titanium oxide (TiO2) tubes using hydrogen peroxide (H2O2) and titanyl (IV) oxysulfate (TiOSO4) as sacrificial templates. The method involves dissolving TiOSO4 powder in H2O2 solution and subsequently applying thermal treatment on the resulting amorphous precipitate. Prepared samples were characterized by X-ray diffraction, scanning electron microscopy (SEM) images, thermogravimetric (TG) analysis, and UV-vis analysis. Experimental results indicated that the samples exhibit tube-like structures with lengths of approximately 1.9 mm in diameter and 11.5 mm in length. Anatase and rutile phases were formed after annealing at different temperatures in air. The crystallite size estimated by Rietveld refinement showed an increase from 34.69 to 354.28 nm with an increase in the annealing temperature from 600 to 1000 ?C. At the same time, the band gap values decreased from 3.14 to 2.97 eV. The electron density maps were calculated, and the electronic density was observed to increase from 497.56 e- ?-2 (600 ?C) to 533.10e- ?-2 (740 ?C) and decrease with the annealing temperature of samples. A possible mechanism for the formation of TiO2 tubes was proposed. <comment>Superscript/Subscript Available</comment |
publishDate |
2021 |
dc.date.none.fl_str_mv |
2021-06-25T11:55:49Z 2021-06-25T11:55:49Z 2021-01-01 |
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://dx.doi.org/10.1590/1980-5373-MR-2020-0377 Materials Research-ibero-american Journal Of Materials. Sao Carlos: Univ Fed Sao Carlos, Dept Engenharia Materials, v. 24, n. 2, 8 p., 2021. 1516-1439 http://hdl.handle.net/11449/209309 10.1590/1980-5373-MR-2020-0377 S1516-14392021000200225 WOS:000636798700001 S1516-14392021000200225.pdf |
url |
http://dx.doi.org/10.1590/1980-5373-MR-2020-0377 http://hdl.handle.net/11449/209309 |
identifier_str_mv |
Materials Research-ibero-american Journal Of Materials. Sao Carlos: Univ Fed Sao Carlos, Dept Engenharia Materials, v. 24, n. 2, 8 p., 2021. 1516-1439 10.1590/1980-5373-MR-2020-0377 S1516-14392021000200225 WOS:000636798700001 S1516-14392021000200225.pdf |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Materials Research-ibero-american Journal Of Materials |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
8 application/pdf |
dc.publisher.none.fl_str_mv |
Univ Fed Sao Carlos, Dept Engenharia Materials |
publisher.none.fl_str_mv |
Univ Fed Sao Carlos, Dept Engenharia Materials |
dc.source.none.fl_str_mv |
Web of Science reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
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1808128905900457984 |