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Graphene modified with RuO2 and/or TiO2: synthesis, characterization and aplication to electrochemical reactions

Grant number: 15/12851-0
Support type:Scholarships in Brazil - Doctorate (Direct)
Effective date (Start): November 01, 2015
Effective date (End): February 29, 2020
Field of knowledge:Physical Sciences and Mathematics - Chemistry
Principal Investigator:Ernesto Chaves Pereira de Souza
Grantee:Mariana Cristina Silva
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

It is projected that the energy amount necessary for the humanity will 30 TW in 2050 (twice the value of 2010). Then, it is necessary to enhance the amount of energy produced as well as to decrease the dependence on polutat fossil fuel. In this sense, the use of solar energy is a promising solution for these problems, both by its availability and disposal amount. Two electrochemical devices uses solar energy: cells and photoelectrochemical cells. The use of solar energy to generate a fuel is an interesting proposition specially considering the production of hydrogen. This molecule is non polutant and and has three times the mass energy of oil. Any electrochemical device will need new efficient material in their strucutre. In this sense, this proposal deal with the development of new nanostructured functional material to be used in electrochemical devices. In this research we are interested in to increase the material's efficiency as well to understand the relationship among synthesis, structure and properties of these compounds. Until now, we developed materials for several applications such as fuel cells, photovoltaic devices, energy storage system and sensors. Recently, we started to use graphene and graphene oxide modified with metallic and oxide particles to build new electrode materials. Specifically, this thesis will synthesize RuO2 and RuO2-TiO2 modified graphene films and to investigated their eletronic and electrochemical properties. (AU)