Photo-assisted degradation of organic pollutant by CuFeS2 powder in RGB-LED reactors: A comprehensive study of band gap values and the relation between wavelength and electron-hole recombination
This work investigated the relation between direct band-gap conversion and excitation wavelength towards catalysis efficiency in red, green, and blue (RGB) light-emitting diode (LED) reactors. An integrating sphere and spectroradiometer system obtained the emission wavelengths of the operating modes...
- Autores:
-
Vieira, Yasmin
DA BOIT MARTINELLO, KATIA
Ribeiro, Tatiane
Silveira, Juliano P.
Salla, Julia S.
O. Silva, Luis F.
Foletto, Edson L.
Dotto, Guilherme L.
- Tipo de recurso:
- Article of journal
- Fecha de publicación:
- 2021
- Institución:
- Corporación Universidad de la Costa
- Repositorio:
- REDICUC - Repositorio CUC
- Idioma:
- eng
- OAI Identifier:
- oai:repositorio.cuc.edu.co:11323/9277
- Acceso en línea:
- https://hdl.handle.net/11323/9277
https://doi.org/10.1016/j.apt.2021.11.020
https://repositorio.cuc.edu.co/
- Palabra clave:
- Electron-hole recombination
LED photoreactor
Photocatalytic degradation
Chalcopyrite
Band-gap
- Rights
- embargoedAccess
- License
- Atribución-NoComercial-SinDerivadas 4.0 Internacional (CC BY-NC-ND 4.0)
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oai:repositorio.cuc.edu.co:11323/9277 |
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RCUC2 |
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REDICUC - Repositorio CUC |
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|
| dc.title.eng.fl_str_mv |
Photo-assisted degradation of organic pollutant by CuFeS2 powder in RGB-LED reactors: A comprehensive study of band gap values and the relation between wavelength and electron-hole recombination |
| title |
Photo-assisted degradation of organic pollutant by CuFeS2 powder in RGB-LED reactors: A comprehensive study of band gap values and the relation between wavelength and electron-hole recombination |
| spellingShingle |
Photo-assisted degradation of organic pollutant by CuFeS2 powder in RGB-LED reactors: A comprehensive study of band gap values and the relation between wavelength and electron-hole recombination Electron-hole recombination LED photoreactor Photocatalytic degradation Chalcopyrite Band-gap |
| title_short |
Photo-assisted degradation of organic pollutant by CuFeS2 powder in RGB-LED reactors: A comprehensive study of band gap values and the relation between wavelength and electron-hole recombination |
| title_full |
Photo-assisted degradation of organic pollutant by CuFeS2 powder in RGB-LED reactors: A comprehensive study of band gap values and the relation between wavelength and electron-hole recombination |
| title_fullStr |
Photo-assisted degradation of organic pollutant by CuFeS2 powder in RGB-LED reactors: A comprehensive study of band gap values and the relation between wavelength and electron-hole recombination |
| title_full_unstemmed |
Photo-assisted degradation of organic pollutant by CuFeS2 powder in RGB-LED reactors: A comprehensive study of band gap values and the relation between wavelength and electron-hole recombination |
| title_sort |
Photo-assisted degradation of organic pollutant by CuFeS2 powder in RGB-LED reactors: A comprehensive study of band gap values and the relation between wavelength and electron-hole recombination |
| dc.creator.fl_str_mv |
Vieira, Yasmin DA BOIT MARTINELLO, KATIA Ribeiro, Tatiane Silveira, Juliano P. Salla, Julia S. O. Silva, Luis F. Foletto, Edson L. Dotto, Guilherme L. |
| dc.contributor.author.spa.fl_str_mv |
Vieira, Yasmin DA BOIT MARTINELLO, KATIA Ribeiro, Tatiane Silveira, Juliano P. Salla, Julia S. O. Silva, Luis F. Foletto, Edson L. Dotto, Guilherme L. |
| dc.subject.proposal.eng.fl_str_mv |
Electron-hole recombination LED photoreactor Photocatalytic degradation Chalcopyrite Band-gap |
| topic |
Electron-hole recombination LED photoreactor Photocatalytic degradation Chalcopyrite Band-gap |
| description |
This work investigated the relation between direct band-gap conversion and excitation wavelength towards catalysis efficiency in red, green, and blue (RGB) light-emitting diode (LED) reactors. An integrating sphere and spectroradiometer system obtained the emission wavelengths of the operating modes spectra of the RGB-LED reactors. The effects of pH, catalyst, and H2O2 dosage were investigated, and the optimal photocatalysis conditions were found to be at pH 3, catalyst loading of 0.25 g L 1, 0.25 mmol L 1 of H2O2(aq) (30% v/v) for an initial model pollutant concentration of 75 mg L 1 and reaction time of 60 min. Under the higher intensity red mode (R1), the highest color removal rate was reached (88.1%), while in the conventional white light mode (WL), the decolorization efficiency remained 64.3%. Furthermore, the R1 mode showed a superior TOC removal than the WL mode, reaching the final removal efficiencies of 91.86% and 61.06%, respectively. Contrary to what has been reported, as the dominant wavelength of the irradiation source decreased, the efficiency also tended to decrease. The electronhole recombination increased as the irradiation mode decreased, and a work function (u) representing this phenomenon was obtained by the deduction of the relation between energy (E) and frequency (f) of the photons involved. Therefore, the insights presented in this work are valuable tools in increasing LED photocatalysis efficiency |
| publishDate |
2021 |
| dc.date.issued.none.fl_str_mv |
2021-11-27 |
| dc.date.accessioned.none.fl_str_mv |
2022-06-21T15:44:07Z |
| dc.date.available.none.fl_str_mv |
2022-06-21T15:44:07Z 2023-11-27 |
| dc.type.spa.fl_str_mv |
Artículo de revista |
| dc.type.coar.fl_str_mv |
http://purl.org/coar/resource_type/c_2df8fbb1 |
| dc.type.coarversion.fl_str_mv |
http://purl.org/coar/version/c_970fb48d4fbd8a85 |
| dc.type.coar.spa.fl_str_mv |
http://purl.org/coar/resource_type/c_6501 |
| dc.type.content.spa.fl_str_mv |
Text |
| dc.type.driver.spa.fl_str_mv |
info:eu-repo/semantics/article |
| dc.type.redcol.spa.fl_str_mv |
http://purl.org/redcol/resource_type/ART |
| format |
http://purl.org/coar/resource_type/c_6501 |
| dc.identifier.issn.spa.fl_str_mv |
0921-8831 |
| dc.identifier.uri.spa.fl_str_mv |
https://hdl.handle.net/11323/9277 |
| dc.identifier.url.spa.fl_str_mv |
https://doi.org/10.1016/j.apt.2021.11.020 |
| dc.identifier.doi.spa.fl_str_mv |
10.1016/j.apt.2021.11.020 |
| dc.identifier.eissn.spa.fl_str_mv |
1568-5527 |
| dc.identifier.instname.spa.fl_str_mv |
Corporación Universidad de la Costa |
| dc.identifier.reponame.spa.fl_str_mv |
REDICUC - Repositorio CUC |
| dc.identifier.repourl.spa.fl_str_mv |
https://repositorio.cuc.edu.co/ |
| identifier_str_mv |
0921-8831 10.1016/j.apt.2021.11.020 1568-5527 Corporación Universidad de la Costa REDICUC - Repositorio CUC |
| url |
https://hdl.handle.net/11323/9277 https://doi.org/10.1016/j.apt.2021.11.020 https://repositorio.cuc.edu.co/ |
| dc.language.iso.none.fl_str_mv |
eng |
| language |
eng |
| dc.relation.ispartofjournal.spa.fl_str_mv |
Advanced Powder Technology |
| dc.relation.references.spa.fl_str_mv |
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Vieira, YasminDA BOIT MARTINELLO, KATIARibeiro, TatianeSilveira, Juliano P.Salla, Julia S.O. Silva, Luis F.Foletto, Edson L.Dotto, Guilherme L.2022-06-21T15:44:07Z2023-11-272022-06-21T15:44:07Z2021-11-270921-8831https://hdl.handle.net/11323/9277https://doi.org/10.1016/j.apt.2021.11.02010.1016/j.apt.2021.11.0201568-5527Corporación Universidad de la CostaREDICUC - Repositorio CUChttps://repositorio.cuc.edu.co/This work investigated the relation between direct band-gap conversion and excitation wavelength towards catalysis efficiency in red, green, and blue (RGB) light-emitting diode (LED) reactors. An integrating sphere and spectroradiometer system obtained the emission wavelengths of the operating modes spectra of the RGB-LED reactors. The effects of pH, catalyst, and H2O2 dosage were investigated, and the optimal photocatalysis conditions were found to be at pH 3, catalyst loading of 0.25 g L 1, 0.25 mmol L 1 of H2O2(aq) (30% v/v) for an initial model pollutant concentration of 75 mg L 1 and reaction time of 60 min. Under the higher intensity red mode (R1), the highest color removal rate was reached (88.1%), while in the conventional white light mode (WL), the decolorization efficiency remained 64.3%. Furthermore, the R1 mode showed a superior TOC removal than the WL mode, reaching the final removal efficiencies of 91.86% and 61.06%, respectively. Contrary to what has been reported, as the dominant wavelength of the irradiation source decreased, the efficiency also tended to decrease. The electronhole recombination increased as the irradiation mode decreased, and a work function (u) representing this phenomenon was obtained by the deduction of the relation between energy (E) and frequency (f) of the photons involved. Therefore, the insights presented in this work are valuable tools in increasing LED photocatalysis efficiency11 páginasapplication/pdfengElsevierNetherlands2021 The Society of Powder Technology Japan. Published by Elsevier BV and The Society of Powder Technology Japan. All rights reserved.Atribución-NoComercial-SinDerivadas 4.0 Internacional (CC BY-NC-ND 4.0)https://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/embargoedAccesshttp://purl.org/coar/access_right/c_f1cfPhoto-assisted degradation of organic pollutant by CuFeS2 powder in RGB-LED reactors: A comprehensive study of band gap values and the relation between wavelength and electron-hole recombinationArtículo de revistahttp://purl.org/coar/resource_type/c_6501http://purl.org/coar/resource_type/c_2df8fbb1Textinfo:eu-repo/semantics/articlehttp://purl.org/redcol/resource_type/ARThttp://purl.org/coar/version/c_970fb48d4fbd8a85https://www.sciencedirect.com/science/article/pii/S0921883121005574?via%3DihubAdvanced Powder Technology[1] K. Kabra, R. Chaudhary, R.L. Sawhney, Treatment of hazardous organic and inorganic compounds through aqueous-phase photocatalysis: a review, Ind. Eng. Chem. Res. 43 (2004) 7683–7696, https://doi.org/10.1021/ie0498551.[2] J.P. Ghosh, C.H. Langford, G. 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Pigment. 75 (1) (2007) 156–165, https://doi.org/ 10.1016/j.dyepig.2006.05.040.10336833Electron-hole recombinationLED photoreactorPhotocatalytic degradationChalcopyriteBand-gapPublicationORIGINAL1-s2.0-S0921883121005574-main.pdf1-s2.0-S0921883121005574-main.pdfapplication/pdf1731244https://repositorio.cuc.edu.co/bitstreams/21c605c6-2002-4524-95db-6917f483d117/download030c168338c518368c4a694ca8211db4MD51LICENSElicense.txtlicense.txttext/plain; charset=utf-83196https://repositorio.cuc.edu.co/bitstreams/838c9e22-a09d-4f91-b14a-276ba1d1bcc9/downloade30e9215131d99561d40d6b0abbe9badMD52TEXT1-s2.0-S0921883121005574-main.pdf.txt1-s2.0-S0921883121005574-main.pdf.txttext/plain66260https://repositorio.cuc.edu.co/bitstreams/0caab878-6551-458f-958b-987ef2c67aaa/downloadb70757225a24b065c12ac8b6402e0dfcMD53THUMBNAIL1-s2.0-S0921883121005574-main.pdf.jpg1-s2.0-S0921883121005574-main.pdf.jpgimage/jpeg16603https://repositorio.cuc.edu.co/bitstreams/ffb61bd1-1adb-422e-8861-0ff7b2727788/downloadc371df496b126b6d3428e091aee062f6MD5411323/9277oai:repositorio.cuc.edu.co:11323/92772024-09-17 14:13:59.481https://creativecommons.org/licenses/by-nc-nd/4.0/2021 The Society of Powder Technology Japan. 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