Enhanced degradation of the antibiotic sulfamethoxazole by heterogeneous photocatalysis using Ce0,8Gd0,2O2-delta/TiO2 particles

Autor(es)

de Matos Rodrigues, Murillo H. ^[1] ; Rodrigues de Sousa, Priscila Afonso ^[1] ; Borges, Kellen Cristina M. ^[1] ; Coelho, Luciana de Melo ^[1] ; Goncalves, Rosana de Fatima ^[1] ; Teodoro, Marcio Daldin ^[2] ; da Motta, Fabiana Vilella ^[3] ; do Nascimento, Rubens Maribondo ^[3] ; Godinho Junior, Mario ^[1]

Afiliação do(s) autor(es)

^[1] Univ Fed Goias, Dept Quim, BR-75704020 Catalao, Go - Brazil

^[2] Univ Fed Sao Carlos, Dept Fis, BR-13565905 Sao Carlos, SP - Brazil

^[3] Univ Fed Rio Grande do Norte, Dept Engn Mat, Natal, RN - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Journal of Alloys and Compounds; v. 808, NOV 5 2019.
• Citações Web of Science: 0

Resumo

Forms of degradation of the environmental pollutant sulphamethoxazole have been studied over the years, and one form of degradation in heterogeneous photocatalysis. In this work a study was carried out to elaborate a photocatalyst capable of degrading the pollutant sulfamethoxazole, starting to elaborate heterojunctions between TiO2 and CeO2 doped with gadolinium, showing that the combination of both materials is able to contribute to the degradation of the pollutant, promoting 97% degradation. This favorable performance can be attributed by the formation of a characterized heterojunction with presence of mesopores that aid in the adsorption processes on the surface of the photocatalyst, and a high formation of active sites resulting from the formation of the electron pair, promoted by the excitation of the electrons of the band of valence for conduction band by means of photons. (C) 2019 Elsevier B.V. All rights reserved. (AU)

• Processo FAPESP: 14/19142-2 - Caracterização e processamento de nanoestruturas semicondutoras e aplicações como dispositivos
• Beneficiário: Gilmar Eugenio Marques
• Modalidade de apoio: Auxílio à Pesquisa - Temático