Povzetek
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.
Ključne besede
Sn-doped alpha-Fe2O3;oxygen vacancies;photoelectrochemical oxidation;propane-1,2,3-triol;4-hydroxy-3-methoxybenzyl alcohol;
Podatki
Jezik: |
Angleški jezik |
Leto izida: |
2025 |
Tipologija: |
1.01 - Izvirni znanstveni članek |
Organizacija: |
UNG - Univerza v Novi Gorici |
UDK: |
54 |
COBISS: |
221378563
|
ISSN: |
2213-3437 |
Št. ogledov: |
79 |
Št. prenosov: |
0 |
Ocena: |
0 (0 glasov) |
Metapodatki: |
|
Ostali podatki
Strani: |
str. 1-9 |
Letnik: |
ǂVol. ǂ13 |
Zvezek: |
ǂissue ǂ1, [article no.] 115363 |
Čas izdaje: |
Feb. 2025 |
DOI: |
10.1016/j.jece.2025.115363 |
ID: |
25646395 |