Catalytic photodegradation of dyes by in situ zeolite-supported titania

The degradation of dyes (methylene blue, direct blue 71, direct yellow 8) by a series of titania-supported catalysts generated in situ via the impregnation of TiCl4 onto a series of zeolite, which was synthesized using rice husks as the silicon source, was individually evaluated. After calcination,...

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Principais autores: Petkowicz, Diego Ivan, Pergher, Sibele Berenice Castellã, Silva, Carlos Daniel Silva da, Rocha, Zênis Novais da, Santos, João Henrique Zimnoch dos
Formato: article
Idioma:English
Publicado em: Elsevier
Assuntos:
Photocatalysis
Titania
Zeolite NaA
Dye
Rice husk
Endereço do item:https://repositorio.ufrn.br/jspui/handle/123456789/29122
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spelling ri-123456789-291222023-02-01T20:13:14Z Catalytic photodegradation of dyes by in situ zeolite-supported titania Petkowicz, Diego Ivan Pergher, Sibele Berenice Castellã Silva, Carlos Daniel Silva da Rocha, Zênis Novais da Santos, João Henrique Zimnoch dos Photocatalysis Titania Zeolite NaA Dye Rice husk The degradation of dyes (methylene blue, direct blue 71, direct yellow 8) by a series of titania-supported catalysts generated in situ via the impregnation of TiCl4 onto a series of zeolite, which was synthesized using rice husks as the silicon source, was individually evaluated. After calcination, the resulting supported catalysts were characterized by X-ray diffraction spectrometry, ultraviolet–visible diffuse reflectance spectroscopy, diffuse reflectance and transmittance infrared Fourier transform spectroscopy, energy dispersive X-ray scanning electron microscopy, small angle X-ray scattering and differential pulse voltammetry. The titania generated is present in the anatase phase, without affecting the zeolite framework. Catalyst activity was shown to be comparable to that of the commercial P-25 catalyst after 1 h of UV light exposition. Monitoring the catalyst performance of several batches of material showed that P-25 provided the highest photodecomposition until the third cycle. On the other hand, the activity of the in situ-supported titania catalyst, in spite of showing lower catalytic activity, remained roughly constant up to the fifth cycle. This suggests that the catalyst generated in situ is more suitable for both filtering and reuse. 2020-06-03T02:00:09Z 2020-06-03T02:00:09Z 2010-04-15 article PETKOWICZ, Diego Ivan; PERGHER, Sibele B. C.; SILVA, Carlos Daniel Silva da; ROCHA, Zênis Novais da; SANTOS, João H. Z. dos. Catalytic photodegradation of dyes by in situ zeolite-supported titania. Chemical Engineering Journal, [s. l.], v. 158, n. 3, p. 505-512, abr. 2010. ISSN 1385-8947. DOI https://doi.org/10.1016/j.cej.2010.01.039. Disponível em: https://www.sciencedirect.com/science/article/abs/pii/S1385894710000604?via%3Dihub. Acesso em: 16 maio 2020. 1385-8947 https://repositorio.ufrn.br/jspui/handle/123456789/29122 10.1016/j.cej.2010.01.039 en Elsevier
institution Repositório Institucional
collection RI - UFRN
language English
topic Photocatalysis
Titania
Zeolite NaA
Dye
Rice husk
spellingShingle Photocatalysis
Titania
Zeolite NaA
Dye
Rice husk
Petkowicz, Diego Ivan
Pergher, Sibele Berenice Castellã
Silva, Carlos Daniel Silva da
Rocha, Zênis Novais da
Santos, João Henrique Zimnoch dos
Catalytic photodegradation of dyes by in situ zeolite-supported titania
description The degradation of dyes (methylene blue, direct blue 71, direct yellow 8) by a series of titania-supported catalysts generated in situ via the impregnation of TiCl4 onto a series of zeolite, which was synthesized using rice husks as the silicon source, was individually evaluated. After calcination, the resulting supported catalysts were characterized by X-ray diffraction spectrometry, ultraviolet–visible diffuse reflectance spectroscopy, diffuse reflectance and transmittance infrared Fourier transform spectroscopy, energy dispersive X-ray scanning electron microscopy, small angle X-ray scattering and differential pulse voltammetry. The titania generated is present in the anatase phase, without affecting the zeolite framework. Catalyst activity was shown to be comparable to that of the commercial P-25 catalyst after 1 h of UV light exposition. Monitoring the catalyst performance of several batches of material showed that P-25 provided the highest photodecomposition until the third cycle. On the other hand, the activity of the in situ-supported titania catalyst, in spite of showing lower catalytic activity, remained roughly constant up to the fifth cycle. This suggests that the catalyst generated in situ is more suitable for both filtering and reuse.
format article
author Petkowicz, Diego Ivan
Pergher, Sibele Berenice Castellã
Silva, Carlos Daniel Silva da
Rocha, Zênis Novais da
Santos, João Henrique Zimnoch dos
author_facet Petkowicz, Diego Ivan
Pergher, Sibele Berenice Castellã
Silva, Carlos Daniel Silva da
Rocha, Zênis Novais da
Santos, João Henrique Zimnoch dos
author_sort Petkowicz, Diego Ivan
title Catalytic photodegradation of dyes by in situ zeolite-supported titania
title_short Catalytic photodegradation of dyes by in situ zeolite-supported titania
title_full Catalytic photodegradation of dyes by in situ zeolite-supported titania
title_fullStr Catalytic photodegradation of dyes by in situ zeolite-supported titania
title_full_unstemmed Catalytic photodegradation of dyes by in situ zeolite-supported titania
title_sort catalytic photodegradation of dyes by in situ zeolite-supported titania
publisher Elsevier
publishDate 2020
url https://repositorio.ufrn.br/jspui/handle/123456789/29122
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AT perghersibeleberenicecastella catalyticphotodegradationofdyesbyinsituzeolitesupportedtitania
AT silvacarlosdanielsilvada catalyticphotodegradationofdyesbyinsituzeolitesupportedtitania
AT rochazenisnovaisda catalyticphotodegradationofdyesbyinsituzeolitesupportedtitania
AT santosjoaohenriquezimnochdos catalyticphotodegradationofdyesbyinsituzeolitesupportedtitania
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