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Photocatalytic degradation of methylene blue with spent FCC catalyst loaded with ferric oxide and titanium dioxide

The spent fluid catalytic cracking (FCC) catalyst has been loaded with ferric oxide (Fe(2)O(3)) and titanium dioxide (TiO(2)). Fe-Ti/SF composite (loaded with 5 wt% TiO(2) and 5 wt% Fe(2)O(3)), Fe/SF composite (loaded with10 wt% Fe(2)O(3)) and Ti/SF composite (loaded with 10 wt% TiO(2)) have been fa...

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Autores principales: Xu, Jiasheng, Zhang, Te, Zhang, Jie
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7391759/
https://www.ncbi.nlm.nih.gov/pubmed/32728146
http://dx.doi.org/10.1038/s41598-020-69643-2
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author Xu, Jiasheng
Zhang, Te
Zhang, Jie
author_facet Xu, Jiasheng
Zhang, Te
Zhang, Jie
author_sort Xu, Jiasheng
collection PubMed
description The spent fluid catalytic cracking (FCC) catalyst has been loaded with ferric oxide (Fe(2)O(3)) and titanium dioxide (TiO(2)). Fe-Ti/SF composite (loaded with 5 wt% TiO(2) and 5 wt% Fe(2)O(3)), Fe/SF composite (loaded with10 wt% Fe(2)O(3)) and Ti/SF composite (loaded with 10 wt% TiO(2)) have been fabricated via a modified-impregnation method. The band gaps of the Fe-Ti/SF, Fe/SF and Ti/SF composites (evaluated by the energy versus [F(R∞)hv](n)) are 2.23, 1.98 and 3.0 eV, respectively. Electrochemical impedance spectroscopy shows that the Fe-Ti/SF has lower electron transfer resistance, it has the small charge transfer resistance and fast charge transfer rate. The interparticle electrons transfer between the Fe(2)O(3) and TiO(2), which can improve the separation of the photo-electrons and holes. The holes transfer from valence band of TiO(2) to the valence band of Fe(2)O(3), which can provide more active sites around the adsorbed molecules. The methylene blue degradation efficiencies (with the Fe-Ti/SF, Fe/SF and Ti/SF composites) are ~ 94.2%, ~ 22.3% and ~ 54.0% in 120 min, respectively. This work reveals that the spent FCC catalyst as supporter can be loaded with Fe(2)O(3) and TiO(2). This composite is highly suitable for degradation of methylene blue, which can provide a potential method to dispose the spent FCC catalyst in industry.
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spelling pubmed-73917592020-07-31 Photocatalytic degradation of methylene blue with spent FCC catalyst loaded with ferric oxide and titanium dioxide Xu, Jiasheng Zhang, Te Zhang, Jie Sci Rep Article The spent fluid catalytic cracking (FCC) catalyst has been loaded with ferric oxide (Fe(2)O(3)) and titanium dioxide (TiO(2)). Fe-Ti/SF composite (loaded with 5 wt% TiO(2) and 5 wt% Fe(2)O(3)), Fe/SF composite (loaded with10 wt% Fe(2)O(3)) and Ti/SF composite (loaded with 10 wt% TiO(2)) have been fabricated via a modified-impregnation method. The band gaps of the Fe-Ti/SF, Fe/SF and Ti/SF composites (evaluated by the energy versus [F(R∞)hv](n)) are 2.23, 1.98 and 3.0 eV, respectively. Electrochemical impedance spectroscopy shows that the Fe-Ti/SF has lower electron transfer resistance, it has the small charge transfer resistance and fast charge transfer rate. The interparticle electrons transfer between the Fe(2)O(3) and TiO(2), which can improve the separation of the photo-electrons and holes. The holes transfer from valence band of TiO(2) to the valence band of Fe(2)O(3), which can provide more active sites around the adsorbed molecules. The methylene blue degradation efficiencies (with the Fe-Ti/SF, Fe/SF and Ti/SF composites) are ~ 94.2%, ~ 22.3% and ~ 54.0% in 120 min, respectively. This work reveals that the spent FCC catalyst as supporter can be loaded with Fe(2)O(3) and TiO(2). This composite is highly suitable for degradation of methylene blue, which can provide a potential method to dispose the spent FCC catalyst in industry. Nature Publishing Group UK 2020-07-29 /pmc/articles/PMC7391759/ /pubmed/32728146 http://dx.doi.org/10.1038/s41598-020-69643-2 Text en © The Author(s) 2020 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Xu, Jiasheng
Zhang, Te
Zhang, Jie
Photocatalytic degradation of methylene blue with spent FCC catalyst loaded with ferric oxide and titanium dioxide
title Photocatalytic degradation of methylene blue with spent FCC catalyst loaded with ferric oxide and titanium dioxide
title_full Photocatalytic degradation of methylene blue with spent FCC catalyst loaded with ferric oxide and titanium dioxide
title_fullStr Photocatalytic degradation of methylene blue with spent FCC catalyst loaded with ferric oxide and titanium dioxide
title_full_unstemmed Photocatalytic degradation of methylene blue with spent FCC catalyst loaded with ferric oxide and titanium dioxide
title_short Photocatalytic degradation of methylene blue with spent FCC catalyst loaded with ferric oxide and titanium dioxide
title_sort photocatalytic degradation of methylene blue with spent fcc catalyst loaded with ferric oxide and titanium dioxide
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7391759/
https://www.ncbi.nlm.nih.gov/pubmed/32728146
http://dx.doi.org/10.1038/s41598-020-69643-2
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