Multifunctional TiO2@Ag2MoO4: antimicrobial and photocatalytic properties

• Grant number: 12/09980-5
• Support Opportunities: Scholarships in Brazil - Doctorate
• Start date: December 01, 2012
• End date: May 31, 2016
• Field of knowledge: Engineering - Materials and Metallurgical Engineering - Nonmetallic Materials
• Principal Investigator: Elson Longo da Silva
• Grantee: Cibele Aparecida de Oliveira
• Host Institution: Instituto de Química (IQ). Universidade Estadual Paulista (UNESP). Campus de Araraquara. Araraquara , SP, Brazil
• Associated research grant: 08/57872-1 - National Institute for Materials Science in Nanotechnology, AP.TEM
• Associated scholarship(s): 13/16131-7 - Photocatalytic properties of TiO2@Ag2MoO4 core-shell materials, BE.EP.DR

Abstract

It is proposed to synthesize multifunctional titanium oxide (TiO2) and silver molybdate (Ag2MoO4) nanoparticles by microwave-assisted solvothermal method with core/shell TiO2@Ag2MoO4 structure. TiO2@Ag2MoO4 synthesis is performed from dilute solutions of precursor salts in different solvents, reaction times and temperatures to control the nanocrystals size and shape. The antimicrobial and photocatalytic properties will be analyzed as function of composition and morphological changes. Characterizations will be carried out by X-ray diffraction, Raman spectroscopy, infrared spectroscopy and N2 physisorption (BET method). The crystals morphologies will be analyzed by field emission gun scanning electron microscopy and transmission electron microscopy. The optical properties will be investigated by ultraviolet-visible spectroscopy. The photocatalytic properties for the organic dyes degradation will be tested in the UV lamps irradiation. Finally, the antimicrobial activity will be evaluated in different types of microorganisms and/or bacteria control.

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

OLIVEIRA, CIBELE A.; VOLANTI, DIOGO P.; NOGUEIRA, ANDRE E.; ZAMPERINI, CAMILA A.; VERGANI, CARLOS E.; LONGO, ELSON. Well-designed beta-Ag2MoO4 crystals with photocatalytic and antibacterial activity. MATERIALS & DESIGN, v. 115, p. 73-81, FEB 5 2017. (12/09980-5, 14/17343-0, 13/07296-2)

OLIVEIRA, CIBELE A.; VOLANTI, DIOGO P.; NOGUEIRA, ANDRE E.; ZAMPERINI, CAMILA A.; VERGANI, CARLOS E.; LONGO, ELSON. Well-designed beta-Ag2MoO4 crystals with photocatalytic and antibacterial activity. MATERIALS & DESIGN, v. 115, p. 9-pg., 2017-02-05. (14/17343-0, 12/09980-5, 13/07296-2)

Academic Publications

(References retrieved automatically from State of São Paulo Research Institutions)

OLIVEIRA, Cibele Aparecida de. Photocatalytic properties of TiO2, β-Ag2MoO4 and heterostructure TiO2/Ag2MoO4: synthesis and characterization. 2016. Doctoral Thesis - Universidade Estadual Paulista (Unesp). Instituto de Química. Araraquara Araraquara.