Biomolecule-assisted route to obtain nanostructured bismuth oxybromide with enhanced photocatalytic activity

Autor(es)

Lima, Genesis de O. ^[1] ; Araujo, Thaylan P. ^[1] ; Lima, Jose Renato de O. ^[2] ; Prazeres, Gilza Maria P. ^[1] ; Paschoal, Carlos William A. ^[3] ; Longo, Elson ^[4] ; Tanaka, Auro A. ^[1] ; Maciel, Adeilton P. ^[1] ; Barbosa, Diego A. B. ^[5] ; Almeida, Marcio Aurelio P. ^[2]

Afiliação do(s) autor(es)

^[1] Univ Fed Maranhao, Dept Quim, Campus Bacanga, BR-65080805 Sao Luis, MA - Brazil

^[2] Univ Fed Maranhao, Coordenacao Ciencia Tecnol, Campus Bacanga, BR-65080805 Sao Luis, MA - Brazil

^[3] Univ Fed Ceara, Dept Fis, Campus Pici, BR-65455900 Fortaleza, CE - Brazil

^[4] Univ Fed Sao Carlos, Dept Quim, BR-13565905 Sao Carlos, SP - Brazil

^[5] Univ Fed Maranhao, Coordenacao Licenciatura Ciencias Nat, Campus Bacabal, BR-65418000 Bacabal, MA - Brazil

• Tipo de documento: Artigo Científico
• Fonte: BOLETIN DE LA SOCIEDAD ESPANOLA DE CERAMICA Y VIDRIO; v. 60, n. 1, p. 2-12, JAN-FEB 2021.
• Citações Web of Science: 2

Resumo

Using a microwave-assisted hydrothermal method, we synthesized BiOBr powders, with and without, glycine or phenylalanine as templates. The samples were characterized by X-ray Diffraction, UV-Vis Diffuse Reflectance Spectroscopy, and Field Emission Gun Scanning Electron Microscopy. The XRD patterns were indexed to the tetragonal structure and presented very different intensities from each other, which is consistent with changes in the structural organization. The FEG-SEM images showed morphology alterations, from nanoplates for unmodified BiOBr to nanolamellae for BiOBr with phenylalanine (BOB-phe). The catalytic activity of BOB-phe degraded 98% of Rhodamine B dye in approximately 20 min, while the other BiOBr compounds presented slower degradation kinetics, which could be explained by a higher amount of active sites on BOB-phe surface. (C) 2020 SECV. Published by Elsevier Espana, S.L.U. (AU)

• Processo FAPESP: 13/23995-8 - Síntese do Tungstato de Prata dopado com o Eu3+ e estudo das suas propriedades ópticas, fotoluminescentes e fotocatalíticas
• Beneficiário: Ivo Mateus Pinatti
• Modalidade de apoio: Bolsas no Brasil - Doutorado
• Processo FAPESP: 13/07296-2 - CDMF - Centro de Desenvolvimento de Materiais Funcionais
• Beneficiário: Elson Longo da Silva
• Modalidade de apoio: Auxílio à Pesquisa - Centros de Pesquisa, Inovação e Difusão - CEPIDs