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Heterojunction of CuO nanoclusters with TiO2 for photo-oxidation of organic compounds and for hydrogen production
María Guadalupe Méndez Medrano
Ewa Kowalska
Bunsho Ohtani
DANIEL BAHENA URIBE
Christophe Colbeau Justin
Sven Rau
JOSE LUIS RODRIGUEZ LOPEZ
Hynd Remita
En Embargo
31-12-2021
Atribución-NoComercial-SinDerivadas
https://doi.org/10.1063/5.0015277
Surface modification
Titanium-dioxide
Nanoparticles
Photocatalysis
Au
Degradation
Copper
Composites
Generation
Dispersion
"Heterojunctions of small CuO nanoclusters (synthesized by radiolysis) with TiO2 (commercial P25) induced a photocatalytic activity under visible light irradiation in a wide range of wavelengths due to the narrow bandgap of CuO nanoclusters of around 1.7 eV. The optical, chemical, and electrical properties of these composite nanomaterials were studied. The photocatalytic properties of bare and modified TiO2–P25 were studied for water purification (photooxidation of organic compounds such as phenol and 2-propanol) and for hydrogen generation under visible light irradiation. Time resolved microwave conductivity signals showed activation of TiO2 under visible light, proving the injection of electrons from CuO nanoclusters to the conduction band of TiO2–P25. The modified materials showed high photocatalytic activity under visible light. The important role of charge-carriers was demonstrated for both photoreduction and photooxidation reactions."
American Institute of Physics
2020
Artículo
Mendez Medrano, Maria; Kowalska, Ewa; Ohtani, Bunsho; Bahena, Daniel; Colbeau-Justin, Christophe; Rau, Sven; Rodríguez López, José Luis; Remita, Hynd. (2020). Heterojunction of CuO nanoclusters with TiO2 for photo-oxidation of organic compounds and for hydrogen production. The Journal of Chemical Physics. 153, 034705 (2020); https://doi.org/10.1063/5.0015277.
QUÍMICA
Versión publicada
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Aparece en las colecciones: Publicaciones Científicas Nanociencias y Materiales