1 February 2025
Machreki, M., Badasyan, A., Zigon, D., Tyuliev, G., Emin, S..
(
Георги Тюлиев;
)
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 α-Fe2O3 (Sn:α-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:α-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.
J. Environ. Chem. Eng, 13, 1, Elsevier, 2025, ISSN:2213-2929, DOI:https://doi.org/10.1016/j.jece.2025.115363, 1-9. JCR-IF (Web of Science):7.2 Q1, не оглавява ранглистата (Web of Science)
https://www.sciencedirect.com/science/article/pii/S2213343725000582
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