Bentonites impregnated with TiO2 for photodegradation of methylene blue
Autor(a) principal: | |
---|---|
Data de Publicação: | 2010 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFRN |
Texto Completo: | https://repositorio.ufrn.br/jspui/handle/123456789/29119 |
Resumo: | Four bentonites and one diatomite from Rio Negro (Argentina) were used as supports for titanium oxide (TiO2). The materials were characterized by X-ray diffraction, scanning electron microscopy, infrared spectroscopy, textural analysis by nitrogen adsorption, elemental analysis and diffuse reflectance spectroscopy. The specific surface areas calculated by the BET method were 76, 46, 80, and 31 for the bentonites and 153 m2/g for diatomite and were not changed by impregnation with TiO2. SEM analysis revealed agglomerates, probably due to titania domains on the surface. The properties of the lamellar materials were maintained after TiO2 impregnation, and all materials showed methylene blue photodegradation activity. The bentonites showed a higher activity than the commercial catalyst P25, likely due to the TiO2 distribution and better accessibility. |
id |
UFRN_f95f9899b6146fcf8e625e0446107258 |
---|---|
oai_identifier_str |
oai:https://repositorio.ufrn.br:123456789/29119 |
network_acronym_str |
UFRN |
network_name_str |
Repositório Institucional da UFRN |
repository_id_str |
|
spelling |
Rossetto, EnédersonPetkowicz, Diego IvanSantos, João Henrique Zimnoch dosPergher, Sibele Berenice CastellãPenha, Fábio Garcia2020-06-03T01:28:22Z2020-06-03T01:28:22Z2010-05PERGHER, Sibele Berenice Castellã et al. Bentonites impregnated with TiO2 for photodegradation of methylene blue. Applied Clay Science, [s. l.], v. 48, n. 4, p. 602-606, maio 2010. ISSN 0169-1317. DOI https://doi.org/10.1016/j.clay.2010.03.010. Disponível em: https://www.sciencedirect.com/science/article/abs/pii/S0169131710000773?via%3Dihub. Acesso em 16 maio 2020.0169-1317https://repositorio.ufrn.br/jspui/handle/123456789/2911910.1016/j.clay.2010.03.010.ElsevierAttribution-NonCommercial-NoDerivs 3.0 Brazilhttp://creativecommons.org/licenses/by-nc-nd/3.0/br/info:eu-repo/semantics/openAccessBentonitesDiatomitesTitanium oxidePhotodegradationBentonites impregnated with TiO2 for photodegradation of methylene blueinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleFour bentonites and one diatomite from Rio Negro (Argentina) were used as supports for titanium oxide (TiO2). The materials were characterized by X-ray diffraction, scanning electron microscopy, infrared spectroscopy, textural analysis by nitrogen adsorption, elemental analysis and diffuse reflectance spectroscopy. The specific surface areas calculated by the BET method were 76, 46, 80, and 31 for the bentonites and 153 m2/g for diatomite and were not changed by impregnation with TiO2. SEM analysis revealed agglomerates, probably due to titania domains on the surface. The properties of the lamellar materials were maintained after TiO2 impregnation, and all materials showed methylene blue photodegradation activity. The bentonites showed a higher activity than the commercial catalyst P25, likely due to the TiO2 distribution and better accessibility.engreponame:Repositório Institucional da UFRNinstname:Universidade Federal do Rio Grande do Norte (UFRN)instacron:UFRNCC-LICENSElicense_rdflicense_rdfapplication/rdf+xml; charset=utf-8811https://repositorio.ufrn.br/bitstream/123456789/29119/2/license_rdfe39d27027a6cc9cb039ad269a5db8e34MD52LICENSElicense.txtlicense.txttext/plain; charset=utf-81484https://repositorio.ufrn.br/bitstream/123456789/29119/3/license.txte9597aa2854d128fd968be5edc8a28d9MD53TEXTBentonitesImpregnatedTiO2_Pergher_2010.pdf.txtBentonitesImpregnatedTiO2_Pergher_2010.pdf.txtExtracted texttext/plain19471https://repositorio.ufrn.br/bitstream/123456789/29119/4/BentonitesImpregnatedTiO2_Pergher_2010.pdf.txt34cd95c9de803eae41d338da344564cbMD54THUMBNAILBentonitesImpregnatedTiO2_Pergher_2010.pdf.jpgBentonitesImpregnatedTiO2_Pergher_2010.pdf.jpgGenerated Thumbnailimage/jpeg1659https://repositorio.ufrn.br/bitstream/123456789/29119/5/BentonitesImpregnatedTiO2_Pergher_2010.pdf.jpg5ec86fdfa0f078912f3cf5671748ee09MD55123456789/291192022-12-14 17:57:00.75oai:https://repositorio.ufrn.br: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Repositório de PublicaçõesPUBhttp://repositorio.ufrn.br/oai/opendoar:2022-12-14T20:57Repositório Institucional da UFRN - Universidade Federal do Rio Grande do Norte (UFRN)false |
dc.title.pt_BR.fl_str_mv |
Bentonites impregnated with TiO2 for photodegradation of methylene blue |
title |
Bentonites impregnated with TiO2 for photodegradation of methylene blue |
spellingShingle |
Bentonites impregnated with TiO2 for photodegradation of methylene blue Rossetto, Enéderson Bentonites Diatomites Titanium oxide Photodegradation |
title_short |
Bentonites impregnated with TiO2 for photodegradation of methylene blue |
title_full |
Bentonites impregnated with TiO2 for photodegradation of methylene blue |
title_fullStr |
Bentonites impregnated with TiO2 for photodegradation of methylene blue |
title_full_unstemmed |
Bentonites impregnated with TiO2 for photodegradation of methylene blue |
title_sort |
Bentonites impregnated with TiO2 for photodegradation of methylene blue |
author |
Rossetto, Enéderson |
author_facet |
Rossetto, Enéderson Petkowicz, Diego Ivan Santos, João Henrique Zimnoch dos Pergher, Sibele Berenice Castellã Penha, Fábio Garcia |
author_role |
author |
author2 |
Petkowicz, Diego Ivan Santos, João Henrique Zimnoch dos Pergher, Sibele Berenice Castellã Penha, Fábio Garcia |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Rossetto, Enéderson Petkowicz, Diego Ivan Santos, João Henrique Zimnoch dos Pergher, Sibele Berenice Castellã Penha, Fábio Garcia |
dc.subject.por.fl_str_mv |
Bentonites Diatomites Titanium oxide Photodegradation |
topic |
Bentonites Diatomites Titanium oxide Photodegradation |
description |
Four bentonites and one diatomite from Rio Negro (Argentina) were used as supports for titanium oxide (TiO2). The materials were characterized by X-ray diffraction, scanning electron microscopy, infrared spectroscopy, textural analysis by nitrogen adsorption, elemental analysis and diffuse reflectance spectroscopy. The specific surface areas calculated by the BET method were 76, 46, 80, and 31 for the bentonites and 153 m2/g for diatomite and were not changed by impregnation with TiO2. SEM analysis revealed agglomerates, probably due to titania domains on the surface. The properties of the lamellar materials were maintained after TiO2 impregnation, and all materials showed methylene blue photodegradation activity. The bentonites showed a higher activity than the commercial catalyst P25, likely due to the TiO2 distribution and better accessibility. |
publishDate |
2010 |
dc.date.issued.fl_str_mv |
2010-05 |
dc.date.accessioned.fl_str_mv |
2020-06-03T01:28:22Z |
dc.date.available.fl_str_mv |
2020-06-03T01:28:22Z |
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.citation.fl_str_mv |
PERGHER, Sibele Berenice Castellã et al. Bentonites impregnated with TiO2 for photodegradation of methylene blue. Applied Clay Science, [s. l.], v. 48, n. 4, p. 602-606, maio 2010. ISSN 0169-1317. DOI https://doi.org/10.1016/j.clay.2010.03.010. Disponível em: https://www.sciencedirect.com/science/article/abs/pii/S0169131710000773?via%3Dihub. Acesso em 16 maio 2020. |
dc.identifier.uri.fl_str_mv |
https://repositorio.ufrn.br/jspui/handle/123456789/29119 |
dc.identifier.issn.none.fl_str_mv |
0169-1317 |
dc.identifier.doi.none.fl_str_mv |
10.1016/j.clay.2010.03.010. |
identifier_str_mv |
PERGHER, Sibele Berenice Castellã et al. Bentonites impregnated with TiO2 for photodegradation of methylene blue. Applied Clay Science, [s. l.], v. 48, n. 4, p. 602-606, maio 2010. ISSN 0169-1317. DOI https://doi.org/10.1016/j.clay.2010.03.010. Disponível em: https://www.sciencedirect.com/science/article/abs/pii/S0169131710000773?via%3Dihub. Acesso em 16 maio 2020. 0169-1317 10.1016/j.clay.2010.03.010. |
url |
https://repositorio.ufrn.br/jspui/handle/123456789/29119 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.rights.driver.fl_str_mv |
Attribution-NonCommercial-NoDerivs 3.0 Brazil http://creativecommons.org/licenses/by-nc-nd/3.0/br/ info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Attribution-NonCommercial-NoDerivs 3.0 Brazil http://creativecommons.org/licenses/by-nc-nd/3.0/br/ |
eu_rights_str_mv |
openAccess |
dc.publisher.none.fl_str_mv |
Elsevier |
publisher.none.fl_str_mv |
Elsevier |
dc.source.none.fl_str_mv |
reponame:Repositório Institucional da UFRN instname:Universidade Federal do Rio Grande do Norte (UFRN) instacron:UFRN |
instname_str |
Universidade Federal do Rio Grande do Norte (UFRN) |
instacron_str |
UFRN |
institution |
UFRN |
reponame_str |
Repositório Institucional da UFRN |
collection |
Repositório Institucional da UFRN |
bitstream.url.fl_str_mv |
https://repositorio.ufrn.br/bitstream/123456789/29119/2/license_rdf https://repositorio.ufrn.br/bitstream/123456789/29119/3/license.txt https://repositorio.ufrn.br/bitstream/123456789/29119/4/BentonitesImpregnatedTiO2_Pergher_2010.pdf.txt https://repositorio.ufrn.br/bitstream/123456789/29119/5/BentonitesImpregnatedTiO2_Pergher_2010.pdf.jpg |
bitstream.checksum.fl_str_mv |
e39d27027a6cc9cb039ad269a5db8e34 e9597aa2854d128fd968be5edc8a28d9 34cd95c9de803eae41d338da344564cb 5ec86fdfa0f078912f3cf5671748ee09 |
bitstream.checksumAlgorithm.fl_str_mv |
MD5 MD5 MD5 MD5 |
repository.name.fl_str_mv |
Repositório Institucional da UFRN - Universidade Federal do Rio Grande do Norte (UFRN) |
repository.mail.fl_str_mv |
|
_version_ |
1814832662041329664 |