Imobilização de dióxido de titânio em diferentes materiais suporte para o emprego em fotocatálise heterogênea.
Autor(a) principal: | |
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Data de Publicação: | 2016 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFOP |
Texto Completo: | http://www.repositorio.ufop.br/handle/123456789/6675 http://dx.doi.org/10.5935/0100-4042.20160106 |
Resumo: | The technological bottleneck for the application of heterogeneous photocatalysis with titanium dioxide (TiO2) is the retention and reuse of the catalyst, which brings opportunities for studying techniques for its immobilization on solid supports. The main objective of this paper was to test different methods to effectively immobilize TiO2 on granular activated carbon (GAC), crushed ceramic material (CCM) and zeolite (ZEO) in order to use the catalyst for sulfamethoxazole (SMX) removal from aqueous solutions. For this, three TiO2 immobilization methods (1-immersion of the support in TiO2 slurry; 2-covering by sol-gel synthesis using titanium isopropoxide; 3- impregnating the support with white wall paint doped with TiO2) were tested and the resulting catalyst were characterized and evaluated for SMX removal. The results showed that GAC was the best support and that its immersion in a 50% (w/v) TiO2 suspension was the best immobilization method. Photodegradation assays with such catalyst carried out with 10 mg.L-1 of the antibiotic sulfamethoxazole (SMX) led to 90% of removal of this pharmaceutical after 3.5 hours, which was ~38% higher than the UV photolysis at the same contact time. |
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Imobilização de dióxido de titânio em diferentes materiais suporte para o emprego em fotocatálise heterogênea.Immobilized titanium dioxide (TiO2) in different support materials to use in heterogeneous photocatalysis.PharmaceuticalsCatalyst immobilizationTitanium dioxideHeterogeneous photocatalysiGranular activated carbonThe technological bottleneck for the application of heterogeneous photocatalysis with titanium dioxide (TiO2) is the retention and reuse of the catalyst, which brings opportunities for studying techniques for its immobilization on solid supports. The main objective of this paper was to test different methods to effectively immobilize TiO2 on granular activated carbon (GAC), crushed ceramic material (CCM) and zeolite (ZEO) in order to use the catalyst for sulfamethoxazole (SMX) removal from aqueous solutions. For this, three TiO2 immobilization methods (1-immersion of the support in TiO2 slurry; 2-covering by sol-gel synthesis using titanium isopropoxide; 3- impregnating the support with white wall paint doped with TiO2) were tested and the resulting catalyst were characterized and evaluated for SMX removal. The results showed that GAC was the best support and that its immersion in a 50% (w/v) TiO2 suspension was the best immobilization method. Photodegradation assays with such catalyst carried out with 10 mg.L-1 of the antibiotic sulfamethoxazole (SMX) led to 90% of removal of this pharmaceutical after 3.5 hours, which was ~38% higher than the UV photolysis at the same contact time.2016-07-29T16:46:28Z2016-07-29T16:46:28Z2016info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfBORGES, S. da S. et al. Imobilização de dióxido de titânio em diferentes materiais suporte para o emprego em fotocatálise heterogênea. Química Nova, v. x, p. 1, 2016. Disponível em: <http://quimicanova.sbq.org.br/imagebank/pdf/AR20160025.pdf>. Acesso em: 16 jun. 2016.1678-7064http://www.repositorio.ufop.br/handle/123456789/6675http://dx.doi.org/10.5935/0100-4042.20160106A Sociedade Brasileira de Química dá permissão à UFOP para reproduzir no RI/UFOP, uma cópia em formato eletrônico dos artigos completos, sem nenhuma edição e/ou modificação, publicados na revista Química Nova, que tenham como autores seus alunos e/ou professores. Fonte: Email do editor de 17 set. 2013.info:eu-repo/semantics/openAccessBorges, Shalimar da SilvaXavier, Leandro Pablo dos SantosSilva, Adilson Cândido daAquino, Sergio Francisco deengreponame:Repositório Institucional da UFOPinstname:Universidade Federal de Ouro Preto (UFOP)instacron:UFOP2019-09-23T13:18:19Zoai:repositorio.ufop.br:123456789/6675Repositório InstitucionalPUBhttp://www.repositorio.ufop.br/oai/requestrepositorio@ufop.edu.bropendoar:32332019-09-23T13:18:19Repositório Institucional da UFOP - Universidade Federal de Ouro Preto (UFOP)false |
dc.title.none.fl_str_mv |
Imobilização de dióxido de titânio em diferentes materiais suporte para o emprego em fotocatálise heterogênea. Immobilized titanium dioxide (TiO2) in different support materials to use in heterogeneous photocatalysis. |
title |
Imobilização de dióxido de titânio em diferentes materiais suporte para o emprego em fotocatálise heterogênea. |
spellingShingle |
Imobilização de dióxido de titânio em diferentes materiais suporte para o emprego em fotocatálise heterogênea. Borges, Shalimar da Silva Pharmaceuticals Catalyst immobilization Titanium dioxide Heterogeneous photocatalysi Granular activated carbon |
title_short |
Imobilização de dióxido de titânio em diferentes materiais suporte para o emprego em fotocatálise heterogênea. |
title_full |
Imobilização de dióxido de titânio em diferentes materiais suporte para o emprego em fotocatálise heterogênea. |
title_fullStr |
Imobilização de dióxido de titânio em diferentes materiais suporte para o emprego em fotocatálise heterogênea. |
title_full_unstemmed |
Imobilização de dióxido de titânio em diferentes materiais suporte para o emprego em fotocatálise heterogênea. |
title_sort |
Imobilização de dióxido de titânio em diferentes materiais suporte para o emprego em fotocatálise heterogênea. |
author |
Borges, Shalimar da Silva |
author_facet |
Borges, Shalimar da Silva Xavier, Leandro Pablo dos Santos Silva, Adilson Cândido da Aquino, Sergio Francisco de |
author_role |
author |
author2 |
Xavier, Leandro Pablo dos Santos Silva, Adilson Cândido da Aquino, Sergio Francisco de |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Borges, Shalimar da Silva Xavier, Leandro Pablo dos Santos Silva, Adilson Cândido da Aquino, Sergio Francisco de |
dc.subject.por.fl_str_mv |
Pharmaceuticals Catalyst immobilization Titanium dioxide Heterogeneous photocatalysi Granular activated carbon |
topic |
Pharmaceuticals Catalyst immobilization Titanium dioxide Heterogeneous photocatalysi Granular activated carbon |
description |
The technological bottleneck for the application of heterogeneous photocatalysis with titanium dioxide (TiO2) is the retention and reuse of the catalyst, which brings opportunities for studying techniques for its immobilization on solid supports. The main objective of this paper was to test different methods to effectively immobilize TiO2 on granular activated carbon (GAC), crushed ceramic material (CCM) and zeolite (ZEO) in order to use the catalyst for sulfamethoxazole (SMX) removal from aqueous solutions. For this, three TiO2 immobilization methods (1-immersion of the support in TiO2 slurry; 2-covering by sol-gel synthesis using titanium isopropoxide; 3- impregnating the support with white wall paint doped with TiO2) were tested and the resulting catalyst were characterized and evaluated for SMX removal. The results showed that GAC was the best support and that its immersion in a 50% (w/v) TiO2 suspension was the best immobilization method. Photodegradation assays with such catalyst carried out with 10 mg.L-1 of the antibiotic sulfamethoxazole (SMX) led to 90% of removal of this pharmaceutical after 3.5 hours, which was ~38% higher than the UV photolysis at the same contact time. |
publishDate |
2016 |
dc.date.none.fl_str_mv |
2016-07-29T16:46:28Z 2016-07-29T16:46:28Z 2016 |
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 |
BORGES, S. da S. et al. Imobilização de dióxido de titânio em diferentes materiais suporte para o emprego em fotocatálise heterogênea. Química Nova, v. x, p. 1, 2016. Disponível em: <http://quimicanova.sbq.org.br/imagebank/pdf/AR20160025.pdf>. Acesso em: 16 jun. 2016. 1678-7064 http://www.repositorio.ufop.br/handle/123456789/6675 http://dx.doi.org/10.5935/0100-4042.20160106 |
identifier_str_mv |
BORGES, S. da S. et al. Imobilização de dióxido de titânio em diferentes materiais suporte para o emprego em fotocatálise heterogênea. Química Nova, v. x, p. 1, 2016. Disponível em: <http://quimicanova.sbq.org.br/imagebank/pdf/AR20160025.pdf>. Acesso em: 16 jun. 2016. 1678-7064 |
url |
http://www.repositorio.ufop.br/handle/123456789/6675 http://dx.doi.org/10.5935/0100-4042.20160106 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.source.none.fl_str_mv |
reponame:Repositório Institucional da UFOP instname:Universidade Federal de Ouro Preto (UFOP) instacron:UFOP |
instname_str |
Universidade Federal de Ouro Preto (UFOP) |
instacron_str |
UFOP |
institution |
UFOP |
reponame_str |
Repositório Institucional da UFOP |
collection |
Repositório Institucional da UFOP |
repository.name.fl_str_mv |
Repositório Institucional da UFOP - Universidade Federal de Ouro Preto (UFOP) |
repository.mail.fl_str_mv |
repositorio@ufop.edu.br |
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1813002856687468544 |