Boosted Photocatalytic Activity of Zn/Al‐Based Layered Double Hydroxides Through Cobalt Incorporation for Phenol Degradation-Reference-Cited by-同舟云学术

Boosted Photocatalytic Activity of Zn/Al‐Based Layered Double Hydroxides Through Cobalt Incorporation for Phenol Degradation

Published:2024-04-11 Issue:14 Volume:9 Page:
ISSN:2365-6549
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language:en
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Author:

Portillo‐Vélez Nora S.¹^ORCID,Velásquez‐Torres Mónica E.²,Pérez‐Hernández Raúl³,Ibarra Illich A.⁴⁵,Peralta Ricardo A.¹,Tzompantzi Francisco¹

Affiliation:

1. Área de Catálisis. Departamento de Química Universidad Autónoma Metropolitana-Iztapalapa San Rafael Atlixco 186 C.P. 09340 Ciudad de México México

2. Departamento de Ingeniería de Procesos e Hidráulica Posgrado en Energía y Medio Ambiente Universidad Autónoma Metropolitana-Iztapalapa San Rafael Atlixco 186 C.P. 09340 Ciudad de México México

3. Instituto Nacional de Investigaciones Nucleares Carretera México-Toluca S/N La Marquesa Ocoyoacac C.P. 52750 Estado de México México

4. Laboratorio de Fisicoquímica y Reactividad de Superficies (LaFReS) Instituto de Investigaciones en Materiales Universidad Nacional Autónoma de México Circuito Exterior s/n, CU Coyoacán 04510 Ciudad de México México

5. On sabbatical as “Catedra Dr. Douglas Hugh Everett” at Departamento de Química Universidad Autónoma Metropolitana-Iztapalapa San Rafael Atlixco 186 C.P. 09340 Ciudad de México México

Abstract

AbstractTwo 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.

Publisher

Wiley

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