Boosted Photocatalytic Activity of Zn/Al-Based Layered Double Hydroxides Through Cobalt Incorporation for Phenol Degradation
Por:
Portillo-Vélez N.S., Velásquez-Torres M.E., Pérez-Hernández R., Ibarra I.A., Peralta R.A., Tzompantzi F.
Publicada:
1 ene 2024
Resumen:
Two different hydrotalcites Zn/Al and Zn/Al-Co were prepared for the photodegradation of phenol under UV radiation. These materials were synthesized using the co-precipitation method and characterized through powder X-ray diffraction (PXRD), UV-vis spectroscopy, FTIR spectroscopy, X-ray photoelectron spectroscopy (XPS) and nitrogen physisorption. The physicochemical characterization results indicated that Zn/Al-Co, which incorporates cobalt atoms, did not affect the hydrotalcite structure (layered double hydroxide). However, the specific area was reduced, and the calcination process favoured the creation of surface defects, consequently increasing the adsorption of oxygen species. The calcined Zn/Al-Co(0.3) hydrotalcite exhibited the highest phenol photocatalytic degradation (68 %) and mineralization (52 %) achieved via a mechanism involving superoxide radicals. © 2024 The Authors. ChemistrySelect published by Wiley-VCH GmbH.
Filiaciones:
Portillo-Vélez N.S.:
Área de Catálisis. Departamento de Química, Universidad Autónoma Metropolitana-Iztapalapa, San Rafael Atlixco 186, Ciudad de México, C.P. 09340, Mexico
Velásquez-Torres M.E.:
Departamento de Ingeniería de Procesos e Hidráulica, Posgrado en Energía y Medio Ambiente, Universidad Autónoma Metropolitana-Iztapalapa, San Rafael Atlixco 186, Ciudad de México, C.P. 09340, Mexico
Pérez-Hernández R.:
Instituto Nacional de Investigaciones Nucleares, Carretera México-Toluca S/N La Marquesa, México, Ocoyoacac, Estado de México, C.P. 52750, Mexico
Ibarra I.A.:
Laboratorio de Fisicoquímica y Reactividad de Superficies (LaFReS), Instituto de Investigaciones en Materiales, Universidad Nacional Autónoma de México, Circuito Exterior s/n, CU, Coyoacán, Ciudad de México, 04510, Mexico
On sabbatical as “Catedra Dr. Douglas Hugh Everett” at Departamento de Química, Universidad Autónoma Metropolitana-Iztapalapa, San Rafael Atlixco 186, Ciudad de México, C.P. 09340, Mexico
Peralta R.A.:
Área de Catálisis. Departamento de Química, Universidad Autónoma Metropolitana-Iztapalapa, San Rafael Atlixco 186, Ciudad de México, C.P. 09340, Mexico
Tzompantzi F.:
Área de Catálisis. Departamento de Química, Universidad Autónoma Metropolitana-Iztapalapa, San Rafael Atlixco 186, Ciudad de México, C.P. 09340, Mexico
hybrid, All Open Access; Hybrid Gold Open Access
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