Well-designed beta-Ag2MoO4 crystals with photocatalytic and antibacterial activity

Autor(es)

Oliveira, Cibele A. ; Volanti, Diogo P. ; Nogueira, Andre E. ; Zamperini, Camila A. ; Vergani, Carlos E. ; Longo, Elson

• Tipo de documento: Artigo Científico
• Fonte: MATERIALS & DESIGN; v. 115, p. 9-pg., 2017-02-05.

Resumo

This paper describes the beta silver molybdate (beta-Ag2MoO4) samples with spinel-type cubic structures synthesized with various morphologies, including round tips coral-like, elongated coral-like and truncated cube, by themicrowave-assisted solvo-/hydrothermal method. The crystalmorphologies could be controlled by adjusting the solvent, surfactant, and pH of the precursor solution. X-ray diffraction, field-emission scanning electron microscopy, Fourier-transform Raman spectroscopy, and diffuse reflectance spectroscopy in the ultraviolet-visible (UV-Vis) region, were used to characterize the structures of the samples. The specific surface area was determined using the Brunauer-Emmett-Teller method. Furthermore, the photocatalytic/antibacterial properties of the particles were dependent on the beta-Ag2MoO4 crystal morphogy and were evaluated by Rhodamine B dye photodegradation under UV-Vis light, and by determining their minimuminhibitory and bactericidal concentrations, using a broth microdilution assay for Escherichia coli bacteria. (C) 2016 Elsevier Ltd. All rights reserved. (AU)

• Processo FAPESP: 14/17343-0 - Efeito de metais catalisadores ou óxido de grafeno reduzido em óxidos metálicos semicondutores para detecção de compostos orgânicos voláteis
• Beneficiário: Diogo Paschoalini Volanti
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 12/09980-5 - TiO2@Ag2MoO4 multifuncional: propriedades antimicrobianas e fotocatalíticas
• Beneficiário: Cibele Aparecida de Oliveira
• 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