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Optimized CO2 photoreduction using cuprous oxide (Cu2O) nanoparticles synthesized using Psidium guajava extract
This work aims to propose earth-abundant materials for CO2 photoreduction to generate renewable solar fuels to provide practical solutions to global warming. The selected material in this case is cuprous oxide (Cu2O), one of the most promising photocatalysts for CO2 photoreduction due to its high affinity to solar radiation and electronic properties. Cu2O nanoparticles (NPs) were synthesized using Psidium guajava residue for the photocatalytic CO2 reduction. The aqueous residue of the Psidium guajava fruit proved to be suitable for stabilizing and acting as a reducing agent for the synthesis of Cu2O NPs. The XRD analysis confirmed the formation of the cubic structure of Cu2O. The nanoparticles absorb light from 430 nm with a direct bandgap value of around 1.8 eV. Cu2O NPs exhibited activity for CO2 photoreduction, whose efficiency was optimized by an orthogonal Taguchi L9 design. The factors studied were catalyst loading, air flow, and temperature. During the use of Cu2O NPs in the CO2 photoreduction HCOOH was identified as the main product, with an optimized production of 103.4 µmol h− 1 under visible light. Also, it was demonstrated the photocatalytic activity of the Cu2O NPs for H2 evolution by water splitting.
Cu2O NPs were synthesized using aqueous extract of Psidium guajava.
Cu2O NPs were used as photocatalyst for CO2 photoreduction.
The products obtained from the photoreduction process were formic acid, methanol and formaldehyde.
Optimized CO2 photoreduction using cuprous oxide (Cu2O) nanoparticles synthesized using Psidium guajava extract
This work aims to propose earth-abundant materials for CO2 photoreduction to generate renewable solar fuels to provide practical solutions to global warming. The selected material in this case is cuprous oxide (Cu2O), one of the most promising photocatalysts for CO2 photoreduction due to its high affinity to solar radiation and electronic properties. Cu2O nanoparticles (NPs) were synthesized using Psidium guajava residue for the photocatalytic CO2 reduction. The aqueous residue of the Psidium guajava fruit proved to be suitable for stabilizing and acting as a reducing agent for the synthesis of Cu2O NPs. The XRD analysis confirmed the formation of the cubic structure of Cu2O. The nanoparticles absorb light from 430 nm with a direct bandgap value of around 1.8 eV. Cu2O NPs exhibited activity for CO2 photoreduction, whose efficiency was optimized by an orthogonal Taguchi L9 design. The factors studied were catalyst loading, air flow, and temperature. During the use of Cu2O NPs in the CO2 photoreduction HCOOH was identified as the main product, with an optimized production of 103.4 µmol h− 1 under visible light. Also, it was demonstrated the photocatalytic activity of the Cu2O NPs for H2 evolution by water splitting.
Cu2O NPs were synthesized using aqueous extract of Psidium guajava.
Cu2O NPs were used as photocatalyst for CO2 photoreduction.
The products obtained from the photoreduction process were formic acid, methanol and formaldehyde.
Optimized CO2 photoreduction using cuprous oxide (Cu2O) nanoparticles synthesized using Psidium guajava extract
Energ. Ecol. Environ.
Torres-Arellano, S. (author) / Luevano-Hipolito, E. (author) / Fabela-Cedillo, Mayte G. (author) / Aleman-Ramirez, J. L. (author) / Torres-Martínez, Leticia M. (author) / Sebastian, P. J. (author)
Energy, Ecology and Environment ; 10 ; 66-78
2025-02-01
13 pages
Article (Journal)
Electronic Resource
English
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