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

Author(s)

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

• Document type: Journal article
• Source: MATERIALS & DESIGN; v. 115, p. 9-pg., 2017-02-05.

Abstract

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)

• FAPESP's process: 14/17343-0 - Effect of metal catalysts or reduced graphene oxide on metal oxides semiconductors for detection of volatile organic compounds
• Grantee: Diogo Paschoalini Volanti
• Support Opportunities: Regular Research Grants
• FAPESP's process: 12/09980-5 - Multifunctional TiO2@Ag2MoO4: antimicrobial and photocatalytic properties
• Grantee: Cibele Aparecida de Oliveira
• Support Opportunities: Scholarships in Brazil - Doctorate
• FAPESP's process: 13/07296-2 - CDMF - Center for the Development of Functional Materials
• Grantee: Elson Longo da Silva
• Support Opportunities: Research Grants - Research, Innovation and Dissemination Centers - RIDC