Banca de QUALIFICAÇÃO: IGOR MATHEUS DE AMORIM SILVA

Uma banca de QUALIFICAÇÃO de MESTRADO foi cadastrada pelo programa.
STUDENT : IGOR MATHEUS DE AMORIM SILVA
DATE: 27/02/2023
TIME: 14:00
LOCAL: PLATAFORMA RNP
TITLE:

STUDY OF THE STRUCTURAL AND PHOTOCATALYTIC PROPERTIES SnO2/CuO HETEJUNCTIONS

KEY WORDS:

Heterogeneous Photocatalysis; Heterojunctions; SnO2/CuO; Eosin Y; Methylene Blue; Glycerol Conversion

PAGES: 75
BIG AREA: Ciências Exatas e da Terra
AREA: Química
SUMMARY:

In recent years, scientific interest has grown in the synthesis of p-n-type heterojunctions to photocatalytic applications and a good candidate for photocatalyst is SnO2 because it is stable, non-toxic and economically viable. However, tin oxide when used alone in reactions Photocatalytic plants have high rates of internal recombinations and these recombinations are not favorable because they prevent the reaction from proceeding. SnO2 when combined with oxides of lower bandgap energy tend to form semiconductor heterojunctions, which have the ability to narrow the tin oxide bandgap and decrease recombination rates internal processes, culminating in a better reactional performance. The literature has reported the preparation of SnO2/CuO heterojunctions that have energy absorption potential in the visible region of the electromagnetic spectrum, and this characteristic is favorable for the area since one of the foci of photocatalysis is the synthesis of materials that can be activated with sunlight. The app conventional use of heterojunctions between SnO2 and CuO is in the detection of gaseous substances. Like this, The main proposal of this work is to give a new application to this type of material, using it as a photocatalyst in photodegradation reactions of organic dyes, being methylene blue as a cationic dye and eosin Y as an anionic dye, and also, in the conversion of glycerol by heterogeneous photocatalysis, since photocatalysis applied to the conversion of biomass is a topic on the rise and complies with the principles of green chemistry.

BANKING MEMBERS:
Interno(a) - 1348288 - MARIO ROBERTO MENEGHETTI
Externo(a) à Instituição - RODRIGO DA SILVA VIANA
Presidente - 1515173 - SIMONI MARGARETI PLENTZ MENEGHETTI
Interno(a) - 1697766 - WANDER GUSTAVO BOTERO