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.
Keywords
Sn-doped alpha-Fe2O3;oxygen vacancies;photoelectrochemical oxidation;propane-1,2,3-triol;4-hydroxy-3-methoxybenzyl alcohol;
Data
Language: |
English |
Year of publishing: |
2025 |
Typology: |
1.01 - Original Scientific Article |
Organization: |
UNG - University of Nova Gorica |
UDC: |
54 |
COBISS: |
221378563
|
ISSN: |
2213-3437 |
Views: |
79 |
Downloads: |
0 |
Average score: |
0 (0 votes) |
Metadata: |
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Other data
Pages: |
str. 1-9 |
Volume: |
ǂVol. ǂ13 |
Issue: |
ǂissue ǂ1, [article no.] 115363 |
Chronology: |
Feb. 2025 |
DOI: |
10.1016/j.jece.2025.115363 |
ID: |
25646395 |