Banca de DEFESA: JHOSSETT STALINN LONGOBARDI MOGOLLÓN

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : JHOSSETT STALINN LONGOBARDI MOGOLLÓN
DATE: 23/09/2024
TIME: 15:00
LOCAL: Sala 406 do Bloco B do Campus de Santo André da Universidade Federal do ABC
TITLE:

Rapid Microwave Synthesis of CuO Nanostrips and their
Incorporation on Graphene Oxide for Biomedical
Applications

PAGES: 50
BIG AREA: Engenharias
AREA: Engenharia de Materiais e Metalúrgica
SUMMARY:

 

The microwave-assisted synthesis of nanomaterials have become attractive for research
in the last years. Among these nanomaterials, CuO nanostrips are one of morphologies
less reported in the literature. On the other hand, graphene oxide has been used to form
nanocomposites. Both CuO nanostrips and graphene oxide seem to exhibit good properties
for biomedical applications. This study aimed to synthesize CuO nanostrips by microwaveassisted
method as a function of microwave irradiation, synthesize graphene oxide through
Hummers modified method and produce CuO/GO nanocomposites. Then, the samples
were characterized by XRD, Raman, UV-Vis and FTIR spectroscopy, FE-SEM and TEM.
Diffraction peaks of CuO samples showed a single phase of CuO that correspond to the
monoclinic system. Raman spectra of samples confirmed the formation graphene oxide as
well as CuO nanostrips. FE-SEM and TEM images demonstrated the strip-like morphology
of CuO nanomaterials; in addition, the average length of CuO nanostrips synthesized
at maximum microwave irradiation is 313nm. The optical bandgap of the samples was
obtained using UV-Vis absorbance spectra. The FTIR spectra were employed to study
the proportions of functional groups when CuO nanostrips were incorporated into GO
sheets. CuO nanostrips exhibited high antifungal activity against Candida Tropicalis.

COMMITTEE MEMBERS:
Presidente - Interno ao Programa - 1676360 - ANA MELVA CHAMPI FARFAN
Membro Titular - Examinador(a) Interno ao Programa - 327.823.058-24 - DAVINSON MARIANO DA SILVA - USP
Membro Titular - Examinador(a) Externo ao Programa - 1544412 - GUSTAVO MICHEL MENDOZA LA TORRE
Membro Suplente - Examinador(a) Interno ao Programa - 2226644 - LUCAS ALMEIDA MIRANDA BARRETO
Membro Suplente - Examinador(a) Externo à Instituição - MIGUEL BALANTA - UFU