IMOBILIZAÇÃO DE DIÓXIDO DE TITÂNIO EM DIFERENTES MATERIAIS SUPORTE PARA O EMPREGO EM FOTOCATÁLISE HETEROGÊNEA

Detalhes bibliográficos
Autor(a) principal: Borges,Shalimar S.
Data de Publicação: 2016
Outros Autores: Xavier,Leandro P. S., Silva,Adilson C. da, Aquino,Sérgio F. de
Tipo de documento: Artigo
Idioma: por
Título da fonte: Química Nova (Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422016000700836
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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spelling IMOBILIZAÇÃO DE DIÓXIDO DE TITÂNIO EM DIFERENTES MATERIAIS SUPORTE PARA O EMPREGO EM FOTOCATÁLISE HETEROGÊNEApharmaceuticalscatalyst immobilizationtitanium dioxideheterogeneous photocatalysisgranular 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.Sociedade Brasileira de Química2016-08-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422016000700836Química Nova v.39 n.7 2016reponame:Química Nova (Online)instname:Sociedade Brasileira de Química (SBQ)instacron:SBQ10.5935/0100-4042.20160106info:eu-repo/semantics/openAccessBorges,Shalimar S.Xavier,Leandro P. S.Silva,Adilson C. daAquino,Sérgio F. depor2016-09-15T00:00:00Zoai:scielo:S0100-40422016000700836Revistahttps://www.scielo.br/j/qn/ONGhttps://old.scielo.br/oai/scielo-oai.phpquimicanova@sbq.org.br1678-70640100-4042opendoar:2016-09-15T00:00Química Nova (Online) - Sociedade Brasileira de Química (SBQ)false
dc.title.none.fl_str_mv IMOBILIZAÇÃO DE DIÓXIDO DE TITÂNIO EM DIFERENTES MATERIAIS SUPORTE PARA O EMPREGO EM FOTOCATÁLISE HETEROGÊNEA
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 S.
pharmaceuticals
catalyst immobilization
titanium dioxide
heterogeneous photocatalysis
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 S.
author_facet Borges,Shalimar S.
Xavier,Leandro P. S.
Silva,Adilson C. da
Aquino,Sérgio F. de
author_role author
author2 Xavier,Leandro P. S.
Silva,Adilson C. da
Aquino,Sérgio F. de
author2_role author
author
author
dc.contributor.author.fl_str_mv Borges,Shalimar S.
Xavier,Leandro P. S.
Silva,Adilson C. da
Aquino,Sérgio F. de
dc.subject.por.fl_str_mv pharmaceuticals
catalyst immobilization
titanium dioxide
heterogeneous photocatalysis
granular activated carbon
topic pharmaceuticals
catalyst immobilization
titanium dioxide
heterogeneous photocatalysis
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 2016-08-01
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=S0100-40422016000700836
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422016000700836
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv 10.5935/0100-4042.20160106
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 Sociedade Brasileira de Química
publisher.none.fl_str_mv Sociedade Brasileira de Química
dc.source.none.fl_str_mv Química Nova v.39 n.7 2016
reponame:Química Nova (Online)
instname:Sociedade Brasileira de Química (SBQ)
instacron:SBQ
instname_str Sociedade Brasileira de Química (SBQ)
instacron_str SBQ
institution SBQ
reponame_str Química Nova (Online)
collection Química Nova (Online)
repository.name.fl_str_mv Química Nova (Online) - Sociedade Brasileira de Química (SBQ)
repository.mail.fl_str_mv quimicanova@sbq.org.br
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