Banca de QUALIFICAÇÃO: ADISON PEREIRA DA SILVA JUNIOR

Uma banca de QUALIFICAÇÃO de MESTRADO foi cadastrada pelo programa.
STUDENT : ADISON PEREIRA DA SILVA JUNIOR
DATE: 30/06/2025
TIME: 09:30
LOCAL: Modo Remoto
TITLE:

SYNTHESIS OF GRAPHENE AEROGEL FROM CALOTROPIS PROCERA BIOMASS: CHALLENGES AND APPLICATIONS IN ELECTRICAL AND OIL-WATER MIXTURE SEPARATION

KEY WORDS:

Graphene aerogel; Calotropis procera; pyrolysis; reduced graphene; morphological characterization.

 

PAGES: 25
BIG AREA: Engenharias
AREA: Engenharia Química
SUBÁREA: Tecnologia Química
SPECIALTY: Petróleo e Petroquímica
SUMMARY:

This work describes the production of graphene aerogels from Calotropis procera plant fibers, using ferrocene-catalyzed pyrolysis at 300°C as a synthesis method to obtain reduced graphene oxide (rGO). The structure was assembled by combining sodium alginate and agar, with subsequent ionic crosslinking via CaCl₂. The material was subjected to two-step freeze-drying, ensuring the preservation of the porous structure. Characterization by FTIR spectroscopy indicated the removal of oxygenated groups and partial preservation of the aromatic structure. SEM images revealed the typical morphology of lignocellulosic fibers and the formation of lamellar structures, confirming the success of the thermal conversion. The results demonstrate the potential of rGO aerogels for applications in sensors, supercapacitors, and phase separation.

COMMITTEE MEMBERS:
Interno - 2941160 - JOSE HERIBERTO OLIVEIRA DO NASCIMENTO
Externa à Instituição - MARIA CARLENISE PAIVA DE ALENCAR MOURA - UFRN
Interno - 1149554 - OSVALDO CHIAVONE FILHO