Fabrication of a Novel Co/CoO@Fe < sub > 2 < /sub > V < sub > 4 < /sub > O < sub > 13 < /sub > Composite Catalyst as a Photoanode for Enhanced Photoelectrochemical Water Oxidation

Chem Asian J. 2023 Sep 18:e202300537. doi: 10.1002/asia.202300537. Online ahead of print.ABSTRACTHerein, the synthesis of a novel composite photocatalyst, Co/CoO@Fe2 V4 O13 , is reported by the deposition of CoO metal oxide nanoparticles on the surface of Fe2 V4 O13 bimetallic oxide. The synthesised photocatalyst exhibited a band gap of roughly 1.8 eV, rendering it responsive to the complete visible light spectrum of the sun, thereby enabling optimal absorption of solar radiation. The Co/CoO@Fe2 V4 O13 composites demonstrated an enhanced photoelectrochemical water oxidation capacity compared to pristine Fe2 V4 O13 when exposed to visible light. The enhanced performance is attributed primarily to the creation of a p-n junction at the interface of Fe2 V4 O13 and Co/CoO, as well as the Z-scheme charge transfer mechanism, which aids in the separation and transfer of photogenerated charge carriers. Light absorption by Co nanoparticles via plasmonic excitation and intra- and inter-band transitions in the composite structure is also likely, resulting in increased composite efficiency. Our findings indicate that Co/CoO@Fe2 V4 O13 composites show promising performance for solar water splitting applications and offer new perspectives for designing effective photocatalysts.PMID:37721194 | DOI:10.1002/asia.202300537
Source: Chemistry, an Asian Journal - Category: Chemistry Authors: Source Type: research