Study on BaZrO3 morphology control applied to catalysis and photoluminescence

• Grant number: 16/00481-7
• Support type: Scholarships in Brazil - Scientific Initiation
• Effective date (Start): April 01, 2016
• Effective date (End): March 31, 2017
• Field of knowledge: Engineering - Materials and Metallurgical Engineering
• Principal Investigator: Elson Longo da Silva
• Grantee: Guilherme Henrique Cruvinel
• Home 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

Abstract

This project focuses on the synthesis of powders of barium zirconate, through synthesis, via chemical solution, by co-precipitation and hydrothermal method assisted by microwave in aqueous solutions. Currently, there are major efforts by researchers in finding a model for control of system morphology. These efforts are maintained, as the mechanical, optical, magnetic, electrical, dielectric properties are controlled by this factor influencing substantially the possible applications of these materials. Several routes have been developed over the past decades in order to get control of the synthesis. Among the various methods, it is possible describes the co-precipitation and hydrothermal assisted by microwave, the latter is gaining wide space in the scenario of ceramic powder synthesis due to the advantage of the establishment of the kinetic reaction parameters. Besides the type of process, some parameters greatly influence the final characteristics of powders, such as the use of additives. It is expected that the variation of additives allows a change of morphology and hence the properties of the system and performance of the materials. The powders will be characterized by scanning electron microscopy and transmission spectroscopy, X-ray diffraction, UV-Vis, photoluminescence and photocatalysis. (AU)