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Efficient photocatalytic degradation of diclofenac drug using the Zn1-x-yPrxAlyO photocatalyst under UV light irradiation.
Martins, Emanoel; Trigueiro, Pollyana; Jerônimo, Aimée G; Barbosa, Ricardo; Neves, Luan; Sales, Débora A; Almeida, Luciano C; Viana, Bartolomeu C; Soares, Adriano S; Peña-Garcia, Ramón R.
Afiliación
  • Martins E; Programa de Pós-Graduação Em Ciências E Engenharia Dos Materiais, Universidade Federal de Piauí, Teresina, PI, Brazil.
  • Trigueiro P; Programa de Pós-Graduação Em Engenharia Física, Universidade Federal Rural de Pernambuco, Unidade Acadêmica Do Cabo de Santo Agostinho, Cabo de Santo Agostinho, PE, Brazil.
  • Jerônimo AG; Programa de Pós-Graduação Em Engenharia Física, Universidade Federal Rural de Pernambuco, Unidade Acadêmica Do Cabo de Santo Agostinho, Cabo de Santo Agostinho, PE, Brazil.
  • Barbosa R; Programa de Pós-Graduação Em Engenharia Física, Universidade Federal Rural de Pernambuco, Unidade Acadêmica Do Cabo de Santo Agostinho, Cabo de Santo Agostinho, PE, Brazil.
  • Neves L; Programa de Pós-Graduação Em Engenharia Física, Universidade Federal Rural de Pernambuco, Unidade Acadêmica Do Cabo de Santo Agostinho, Cabo de Santo Agostinho, PE, Brazil.
  • Sales DA; Programa de Pós-Graduação Em Ciências E Engenharia Dos Materiais, Universidade Federal de Piauí, Teresina, PI, Brazil.
  • Almeida LC; Departamento de Engenharia Química, Universidade Federal de Pernambuco, Recife, PE, Brazil.
  • Viana BC; Programa de Pós-Graduação Em Ciências E Engenharia Dos Materiais, Universidade Federal de Piauí, Teresina, PI, Brazil.
  • Soares AS; Programa de Pós-Graduação Em Ciências E Engenharia Dos Materiais, Universidade Federal de Piauí, Teresina, PI, Brazil.
  • Peña-Garcia RR; Programa de Pós-Graduação Em Ciências E Engenharia Dos Materiais, Universidade Federal de Piauí, Teresina, PI, Brazil. rraudelp@gmail.com.
Environ Sci Pollut Res Int ; 31(40): 53074-53089, 2024 Aug.
Article en En | MEDLINE | ID: mdl-39172341
ABSTRACT
Herein, we report the efficient photocatalytic degradation of the diclofenac drug using the Zn1-x-yPrxAlyO photocatalyst [x, y] = (0.00, 0.00), (0.03, 0.01), (0.03,0.03) under UV light irradiation. The analysis of the structure reveals that the Pr3+ and Al3+ cations insertion into the ZnO lattice leads to a decrease in the lattice constant (a and c), Zn-O bond length, strain lattice, and crystallite size. These alterations are linked to the high degree of atomic disorder triggered by the dopants, which produce stress and strain in the ZnO structure. The Raman measurements confirmed the structural phase and showed changes in the position and intensity of the E2High mode, associated with oxygen vibrations and material crystallinity. The presence of the dopants reduces the concentration of VZn and VO++ type defects while increasing the levels of VO, VO+, and Oi defects, as observed from the fitting of the Photoluminescence spectra. Furthermore, it was noted that de Pr3+ and Al3+ cations insertion into ZnO increases the optical band gap, which is associated with the Moss-Burstein effect. The micrograph images show that dopants transform the morphology from quasi-spherical particles to irregular cluster structures. The textural analysis indicated that an increase in the concentration of Al3+ in the ZnO lattice led to a higher surface area, likely enhancing photocatalytic activity. The sample containing 3% Pr3+ and 3% Al3+ showed the highest photocatalytic activity and degraded up to 71.42% of diclofenac. In addition, experiments with scavengers revealed that hydroxyl radicals are the main species involved in the drug's photodegradation mechanism. Finally, the Zn1-x-yPrxAlyO compound is highly recyclable and stable.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Rayos Ultravioleta / Diclofenaco Idioma: En Revista: Environ Sci Pollut Res Int Asunto de la revista: SAUDE AMBIENTAL / TOXICOLOGIA Año: 2024 Tipo del documento: Article País de afiliación: Brasil Pais de publicación: Alemania
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Rayos Ultravioleta / Diclofenaco Idioma: En Revista: Environ Sci Pollut Res Int Asunto de la revista: SAUDE AMBIENTAL / TOXICOLOGIA Año: 2024 Tipo del documento: Article País de afiliación: Brasil Pais de publicación: Alemania