Effect of Calcination Temperature on the Photocatalytic Activity of Nanostructures Synthesized by Hydrothermal Method from Black Mineral Sand
A nanostructured material from black sand, whose structure is composed by Fe2O3 and TiO2 oxides, was prepared via hydrothermal treatment (at 120 °C for 72 h), The starting mineral (as-synthesized nanostructure) was characterized by XRF spectroscopy and thermogravimetric analysis (TGA/DTA) whereas th...
- Autores:
- Tipo de recurso:
- Article of journal
- Fecha de publicación:
- 2020
- Institución:
- Universidad de Bogotá Jorge Tadeo Lozano
- Repositorio:
- Expeditio: repositorio UTadeo
- Idioma:
- eng
- OAI Identifier:
- oai:expeditiorepositorio.utadeo.edu.co:20.500.12010/27476
- Acceso en línea:
- https://doi.org/10.1002/slct.201903560
http://hdl.handle.net/20.500.12010/27476
http://expeditiorepositorio.utadeo.edu.co
- Palabra clave:
- Calcination temperature
Photocatalytic activity
Nanostructures synthesized
Nanoestructuras
Sistemas nanoelectromecánicos
Nanotecnología
- Rights
- License
- Abierto (Texto Completo)
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oai:expeditiorepositorio.utadeo.edu.co:20.500.12010/27476 |
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|
dc.title.spa.fl_str_mv |
Effect of Calcination Temperature on the Photocatalytic Activity of Nanostructures Synthesized by Hydrothermal Method from Black Mineral Sand |
title |
Effect of Calcination Temperature on the Photocatalytic Activity of Nanostructures Synthesized by Hydrothermal Method from Black Mineral Sand |
spellingShingle |
Effect of Calcination Temperature on the Photocatalytic Activity of Nanostructures Synthesized by Hydrothermal Method from Black Mineral Sand Calcination temperature Photocatalytic activity Nanostructures synthesized Nanoestructuras Sistemas nanoelectromecánicos Nanotecnología |
title_short |
Effect of Calcination Temperature on the Photocatalytic Activity of Nanostructures Synthesized by Hydrothermal Method from Black Mineral Sand |
title_full |
Effect of Calcination Temperature on the Photocatalytic Activity of Nanostructures Synthesized by Hydrothermal Method from Black Mineral Sand |
title_fullStr |
Effect of Calcination Temperature on the Photocatalytic Activity of Nanostructures Synthesized by Hydrothermal Method from Black Mineral Sand |
title_full_unstemmed |
Effect of Calcination Temperature on the Photocatalytic Activity of Nanostructures Synthesized by Hydrothermal Method from Black Mineral Sand |
title_sort |
Effect of Calcination Temperature on the Photocatalytic Activity of Nanostructures Synthesized by Hydrothermal Method from Black Mineral Sand |
dc.subject.spa.fl_str_mv |
Calcination temperature Photocatalytic activity Nanostructures synthesized |
topic |
Calcination temperature Photocatalytic activity Nanostructures synthesized Nanoestructuras Sistemas nanoelectromecánicos Nanotecnología |
dc.subject.lemb.spa.fl_str_mv |
Nanoestructuras Sistemas nanoelectromecánicos Nanotecnología |
description |
A nanostructured material from black sand, whose structure is composed by Fe2O3 and TiO2 oxides, was prepared via hydrothermal treatment (at 120 °C for 72 h), The starting mineral (as-synthesized nanostructure) was characterized by XRF spectroscopy and thermogravimetric analysis (TGA/DTA) whereas the calcined nanostructures were analyzed by scanning electron microscopy/EDX, BET single point measurements, X-ray diffraction, FTIR spectroscopy, and UV-Vis spectrophotometry. The effect of thermal treatment on structural, morphological and redox properties of nanostructured samples (NS) have been thoroughly studied in the samples calcined at 400, 700 and 1000 °C, together with a non-treated sample (M1). Their photocatalytic activity toward hydrogen production in the presence of EDTA as sacrificial agent has been tested. The as-synthetized samples calcined at 1000 °C (NS-1000) showed a higher photocatalytic activity for hydrogen production, possibly due to the transformation of magnetite into more active photocatalytical phases (hematite) driven by the changes in surface morphology (such as reduction of crystallite and pore size reduction) according to thermal equilibrium of its phases. The highest activity for photocatalytic hydrogen production was achieved by the materials calcined at 1000 °C (M1-1000 and NS-1000), while the sample calcined at lower values (<700 °C) were the least active. The catalyst activity was assigned to the appearance of a new active phase (α-Fe2O3), which improves the electronic mobility during the photocatalytic mechanism. |
publishDate |
2020 |
dc.date.created.none.fl_str_mv |
2020 |
dc.date.accessioned.none.fl_str_mv |
2022-07-08T16:56:43Z |
dc.date.available.none.fl_str_mv |
2022-07-08T16:56:43Z |
dc.type.coar.fl_str_mv |
http://purl.org/coar/resource_type/c_2df8fbb1 |
dc.type.local.spa.fl_str_mv |
Artículo |
dc.type.driver.spa.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.coar.spa.fl_str_mv |
http://purl.org/coar/resource_type/c_6501 |
format |
http://purl.org/coar/resource_type/c_6501 |
dc.identifier.issn.spa.fl_str_mv |
2365-6549 |
dc.identifier.other.spa.fl_str_mv |
https://doi.org/10.1002/slct.201903560 |
dc.identifier.uri.none.fl_str_mv |
http://hdl.handle.net/20.500.12010/27476 |
dc.identifier.repourl.spa.fl_str_mv |
http://expeditiorepositorio.utadeo.edu.co |
dc.identifier.doi.spa.fl_str_mv |
https://doi.org/10.1002/slct.201903560 |
dc.identifier.orcid.spa.fl_str_mv |
|
identifier_str_mv |
2365-6549 |
url |
https://doi.org/10.1002/slct.201903560 http://hdl.handle.net/20.500.12010/27476 http://expeditiorepositorio.utadeo.edu.co |
dc.language.iso.spa.fl_str_mv |
eng |
language |
eng |
dc.rights.coar.fl_str_mv |
http://purl.org/coar/access_right/c_abf2 |
dc.rights.local.spa.fl_str_mv |
Abierto (Texto Completo) |
rights_invalid_str_mv |
Abierto (Texto Completo) http://purl.org/coar/access_right/c_abf2 |
dc.format.mimetype.spa.fl_str_mv |
application/pdf |
dc.format.rda.spa.fl_str_mv |
1 recurso en línea (archivo de texto) |
dc.coverage.spatial.spa.fl_str_mv |
Colombia |
dc.publisher.spa.fl_str_mv |
Bogotá : Universidad de Bogotá Jorge Tadeo Lozano, 2020 |
institution |
Universidad de Bogotá Jorge Tadeo Lozano |
bitstream.url.fl_str_mv |
https://expeditiorepositorio.utadeo.edu.co/bitstream/20.500.12010/27476/2/license.txt https://expeditiorepositorio.utadeo.edu.co/bitstream/20.500.12010/27476/3/Captura.PNG |
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bitstream.checksumAlgorithm.fl_str_mv |
MD5 MD5 |
repository.name.fl_str_mv |
Repositorio Institucional - Universidad Jorge Tadeo Lozano |
repository.mail.fl_str_mv |
expeditiorepositorio@utadeo.edu.co |
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Colombia2022-07-08T16:56:43Z2022-07-08T16:56:43Z20202365-6549https://doi.org/10.1002/slct.201903560http://hdl.handle.net/20.500.12010/27476http://expeditiorepositorio.utadeo.edu.cohttps://doi.org/10.1002/slct.201903560A nanostructured material from black sand, whose structure is composed by Fe2O3 and TiO2 oxides, was prepared via hydrothermal treatment (at 120 °C for 72 h), The starting mineral (as-synthesized nanostructure) was characterized by XRF spectroscopy and thermogravimetric analysis (TGA/DTA) whereas the calcined nanostructures were analyzed by scanning electron microscopy/EDX, BET single point measurements, X-ray diffraction, FTIR spectroscopy, and UV-Vis spectrophotometry. The effect of thermal treatment on structural, morphological and redox properties of nanostructured samples (NS) have been thoroughly studied in the samples calcined at 400, 700 and 1000 °C, together with a non-treated sample (M1). Their photocatalytic activity toward hydrogen production in the presence of EDTA as sacrificial agent has been tested. The as-synthetized samples calcined at 1000 °C (NS-1000) showed a higher photocatalytic activity for hydrogen production, possibly due to the transformation of magnetite into more active photocatalytical phases (hematite) driven by the changes in surface morphology (such as reduction of crystallite and pore size reduction) according to thermal equilibrium of its phases. The highest activity for photocatalytic hydrogen production was achieved by the materials calcined at 1000 °C (M1-1000 and NS-1000), while the sample calcined at lower values (<700 °C) were the least active. The catalyst activity was assigned to the appearance of a new active phase (α-Fe2O3), which improves the electronic mobility during the photocatalytic mechanism.application/pdf1 recurso en línea (archivo de texto)engBogotá : Universidad de Bogotá Jorge Tadeo Lozano, 2020Calcination temperaturePhotocatalytic activityNanostructures synthesizedNanoestructurasSistemas nanoelectromecánicosNanotecnologíaEffect of Calcination Temperature on the Photocatalytic Activity of Nanostructures Synthesized by Hydrothermal Method from Black Mineral SandArtículoinfo:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501http://purl.org/coar/resource_type/c_2df8fbb1Abierto (Texto Completo)http://purl.org/coar/access_right/c_abf2López-Vásquez, A.Suárez-Escobar, AndrésHerney Ramírez, J.LICENSElicense.txtlicense.txttext/plain; charset=utf-82938https://expeditiorepositorio.utadeo.edu.co/bitstream/20.500.12010/27476/2/license.txtbaba314677a6b940f072575a13bb6906MD52open accessTHUMBNAILCaptura.PNGCaptura.PNGImagenimage/png53626https://expeditiorepositorio.utadeo.edu.co/bitstream/20.500.12010/27476/3/Captura.PNGd10ed8d14a4fdb7d4bc1c21d6040b62eMD53open access20.500.12010/27476oai:expeditiorepositorio.utadeo.edu.co:20.500.12010/274762022-07-08 11:58:16.581metadata only accessRepositorio Institucional - Universidad Jorge Tadeo Lozanoexpeditiorepositorio@utadeo.edu.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 |