| Title: | Preparation of porous [alpha]-Fe[sub]2O[sub]3 thin films for efficient photoelectrocatalytic degradation of basic blue 41 dye |
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| Authors: | ID Machreki, Manel (Author)
ID Chouki, Takwa (Author)
ID Martelanc, Mitja (Author)
ID Butinar, Lorena (Author)
ID Mozetič Vodopivec, Branka (Author)
ID Emin, Saim (Author) |
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| Files: |  https://doi.org/10.1016/j.jece.2021.105495
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| Language: | English |
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| Work type: | Unknown |
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| Typology: | 1.01 - Original Scientific Article |
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| Organization: | UNG - University of Nova Gorica
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| Abstract: | A novel method was developed for the preparation of porous hematite (α-Fe2O3) thin films. First, a solution containing iron precursor was spin-coated on fluorine-doped tin oxide substrate and later short heat-treated at 750 °C. The prepared α-Fe2O3 thin films were applied as dual-function catalyst in photoelectrochemical (PEC) water oxidation and textile dye degradation studies. For the first time, α-Fe2O3 thin films were used in efficient PEC degradation of a textile dye (Basic Blue 41 – B41) using in-situ generated reactive chlorine species. In comparison with photocatalytic and electrocatalytic approaches, the PEC technique allows faster degradation of B41 dye at an applied bias potential of 1.5 V versus reversible hydrogen electrode and under visible light illumination. In the presence of Cl− using the PEC approach the degradation of B41 reaches 99.8%. High-performance liquid chromatography coupled with UV–VIS system confirmed the degradation of B41 dye using PEC. Gas-chromatography coupled to mass spectrometry was used to study the by-products obtained during PEC degradation. Chemical oxygen demand analyses confirmed that the mineralization level of B41 is in the order of 68%. The α-Fe2O3 films developed in this study give a higher level of PEC degradation efficiency compared to other iron oxide-based systems. |
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| Keywords: | thin films, photoelectrocatalysis, kinetics, visible light, degradation, textile dye |
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| Year of publishing: | 2021 |
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| Number of pages: | str. 1-12 |
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| Numbering: | Vol. 9, no. 4 |
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| PID: | 20.500.12556/RUNG-6524  |
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| COBISS.SI-ID: | 62466051 |
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| UDC: | 54 |
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| ISSN on article: | 2213-3437 |
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| DOI: | 10.1016/j.jece.2021.105495 |
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| NUK URN: | URN:SI:UNG:REP:GOVXBPCQ |
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| Publication date in RUNG: | 10.05.2021 |
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| Views: | 3443 |
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| Downloads: | 13 |
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