Alkaline mediated sono-synthesis of surface oxygen-vacancies-rich cerium oxide for efficient photocatalytic CO2 reduction to methanol
Photocatalytic CO2 reduction into desirable hydrocarbon products is one of the significant steps towards a sustainable ecosystem. Intriguingly, surface oxygen vacancies on pristine nanostructures enhance the effectiveness and selectivity of photocatalytic CO2 reduction. It is proposed here that cerium oxide nanostructure can be synthesized under ultrasound irradiation in an alkaline medium for rich surface defects. The acoustic bombardment of the ceria particles has resulted in turbulence generation and substantial impact during ultrasonic treatments, which energized the synthesis reaction for surface oxygen vacancies generation. Consequently, the ultrasonic treatment boosts the photocatalytic hydrogenation performance with excellent selectivity of methanol over CO. The final products had outstanding stability, and the smaller particle size increased the photocatalyst surface area. While the generated nanostructure was incredibly stable and reusable, the greater separation efficiency of the charge carriers due to surface imperfections is examined by the time-resolved photoluminescence spectra.
Semiconductor photocatalysts with surface defects display incredible light absorption bandwidth and these defects function as highly active sites for oxidation processes by interacting with the…
In the present work, we report the biosynthesis of Nickel oxide (NiO) nanoparticles using Senna auriculata aqueous flower extract and their evaluated to the photocatalyst and…
Photocatalytic CO2 reduction into desirable hydrocarbon products is one of the significant steps towards a sustainable ecosystem.