Banca de QUALIFICAÇÃO: MYLLENA KELY PEREIRA FERREIRA

Uma banca de QUALIFICAÇÃO de MESTRADO foi cadastrada pelo programa.
STUDENT : MYLLENA KELY PEREIRA FERREIRA
DATE: 21/12/2023
TIME: 09:00
LOCAL: Modo Remoto
TITLE:

PHOTOELECTROCATALYTIC PRODUCTION OF GREEN HYDROGEN AND SIMULTANEOUS DEGRADATION OF REACTIVE DYE USING GRAPHENE/NIOBIUM ELECTRODE

KEY WORDS:

Renewable energy; graphene oxide; water treatment; biomass; reactive black 5.

PAGES: 45
BIG AREA: Engenharias
AREA: Engenharia Química
SUMMARY:

Population growth and the growing demand for energy sources based on fossil reserves have caused significant challenges related to climate change, as well as affecting effluent management, related to its treatment and reuse. The different types of pollutants, including dyes, result in complications for human health and water bodies. Photoelectrocatalysis, as an environmentally sustainable approach, addresses and contributes to overcoming these mentioned problems, also promoting the production of green hydrogen. This technology directly contributes to the achievement of Sustainable Development Goals 6, 7, 11, 12 and 13. Niobium-based semiconductors make up a large family of promising photocatalyst materials and have attracted increasing attention due to their physicochemical and structural properties. unique. Furthermore, Brazil holds 99% of the world's niobium production, making its use even more promising. In order to further expand its use, materials with structures similar to graphene have been used to improve the efficiency of the photoletrocatalytic process. Considering the electrical conductivity of graphene, there is obvious great potential in the development of photoresponsive electrodes containing this material in photoelectrocatalytic cells. In this sense, this proposal aims to promote the production of green hydrogen with the simultaneous treatment of reactive black dye 5, through photoelectrocatalysis. For this, heterostructures of graphene derivatives (obtained from different synthesis routes) with niobium oxide will be prepared as photoanodes. These prepared photoelectrodes will be characterized by Scanning Electron Microscopy (MET), High Transmission Electron Microscopy (MEAT), X-ray Photoelectron Spectroscopy (EFX) and Band Gap Energy. In addition, all electrochemical characterization will also be carried out, using different techniques. To validate dye degradation, UV-vis spectroscopy, High Performance Liquid Chromatography (HPLC), Chemical Oxygen Demand (COD) and Total Organic Carbon (TOC) are chemical analyzes to be used.

COMMITTEE MEMBERS:
Interna - 2275848 - ELISAMA VIEIRA DOS SANTOS
Presidente - 2941160 - JOSE HERIBERTO OLIVEIRA DO NASCIMENTO
Externa à Instituição - JUSSARA CÂMARA CARDOZO
Externo à Instituição - NIVALDO FREIRE DE ANDRADE NETO