Synthesis, characterization and toxicological evaluation of particles of Ag3VO4\Ag composite

• Grant number: 20/11232-3
• Support Opportunities: Scholarships in Brazil - Master
• Start date: July 01, 2021
• End date: February 28, 2023
• Field of knowledge: Physical Sciences and Mathematics - Chemistry - Physical-Chemistry
• Principal Investigator: Elson Longo da Silva
• Grantee: Guilherme Henrique Cruvinel
• Host Institution: Centro de Ciências Exatas e de Tecnologia (CCET). Universidade Federal de São Carlos (UFSCAR). São Carlos , SP, Brazil
• Associated research grant: 13/07296-2 - CDMF - Center for the Development of Functional Materials, AP.CEPID
• Associated scholarship(s): 21/11255-6 - Born-Oppenheimer molecular dynamics studies and tests in small systems and in Ag3VO4, BE.EP.MS

Abstract

Historically, the development of new methods for the synthesis of materials has been linked to the development of societies, mainly due to the ability to promote changes in materials and enable new types of technological applications. However, such development must always be combined with the need to minimize environmental effects. The proposal of this project has as main objectives to synthesize and characterize Ag3VO4\Ag particulate composite, from Ag3VO4 synthesized via microwave assisted hydrothermal method (MAHM) at different times (t: 2, 4, 8, 16, 32, 64 min ), by means of femtosecond laser irradiation, as well as to evaluate the toxicity of the composite in a species of floating aquatic macrophyte Ricciocarpus natans. Subsequently, the powders obtained from the composites will be structurally characterized by the techniques of X-ray diffraction (DRX), Raman scattering spectroscopy (FT-Raman) and electronic spectroscopy in the ultraviolet-visible (UV-vis) region, and will have the surface characterized by scanning electron microscopy with field-emission gun (FEG-MEV) and transmission electron microscopy (MET) and high resolution (HRTEM) using the selective area electron diffraction mode (SAED). In addition, toxicity bioassays of the Ag3VO4\Ag particulate composite will be carried out in order to obtain an analysis of the toxicological effects, with the aid of mathematical modeling, of these particles on the bioindicator Ricciocarpus natans.