| Title: | Photoelectrochemical conversion of biomass alcohols using in-situ Sn-doped ▫$\alpha-Fe_2O_3$▫ thin films |
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| Authors: | ID Machreki, Manel (Author)
ID Badasyan, Artem (Author)
ID Žigon, Dušan (Author)
ID Tyuliev, Georgi (Author)
ID Emin, Saim (Author) |
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| Files: |  https://www.sciencedirect.com/science/article/pii/S2213343725000582
 Manuscript_JournalPreProof_JEnvChemEng_2025.pdf (1,12 MB)
MD5: 6C04B06D33D56CC2F07426C556F35ACE
https://www.sciencedirect.com/science/article/pii/S2213343725000582?ref=cra_js_challenge&fr=RR-1
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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: | Transformation of biomass into value-added chemicals and fuels is considered an upcycling process that is beneficial to resource utilization. In this study, we used a photoelectrochemical (PEC) approach for selective oxidation of propane-1,2,3-triol to dihydroxyacetone (DHA) with high efficiency and selectivity (99%) using Sn-doped -Fe2O3 (Sn:-Fe2O3) thin films with intrinsic oxygen vacancies (OVs). DHA is an essential compound utilized in the cosmetic industry. In a similar manner, we conducted the first study of the PEC oxidation of 4-hydroxy-3-methoxybenzyl alcohol under visible light. A kinetic model has been formulated and solved to find the time-dependent generation of the products. Electrochemical impedance analyses and PEC experiments demonstrated a correlation between the concentration of molecules and the catalytic performance of Sn:-Fe2O3. Studies using scavengers indicate that the photogenerated holes (h+), singlet oxygen (1O2), hydroxyl radicals (•OH), and superoxide radicals (•O2–) play key roles in achieving high PEC activity. This work provided a new perspective on designing efficient PEC systems for biomass conversion into energy and value-added chemicals. |
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| Keywords: | Sn-doped alpha-Fe2O3, oxygen vacancies, photoelectrochemical oxidation, propane-1, 2, 3-triol, 4-hydroxy-3-methoxybenzyl alcohol |
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| Publication status: | Published |
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| Publication version: | Version of Record |
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| Publication date: | 01.01.2025 |
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| Year of publishing: | 2025 |
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| Number of pages: | str. 1-9 |
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| Numbering: | Vol. 13, issue 1, [article no.] 115363 |
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| PID: | 20.500.12556/RUNG-9644-2d71358e-369d-fa85-443b-2cc3f9822aaa  |
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| COBISS.SI-ID: | 221378563 |
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| UDC: | 54 |
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| ISSN on article: | 2213-3437 |
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| DOI: | 10.1016/j.jece.2025.115363 |
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| NUK URN: | URN:SI:UNG:REP:RBEQOCS4 |
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| Publication date in RUNG: | 08.01.2025 |
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| Views: | 247 |
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| Downloads: | 3 |
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