Abstracts Book - IMRC 2018

• SA6-O040
REDUCTION AND EXFOLIATION OF DRY GRAPHENE OXIDE VIA
MICROWAVES IRRADIATION: DEGREE OF EXFOLIATION AND
ELECTRICAL CONDUCTIVITY
María Guadalupe Iniestra Galindo 1 , José Pérez González 1 , Benjamín Marcos Marín Santibáñez 2
1 Instituto Politécnico Nacional - IPN, Escuela Superior de Física y Matemáticas, Mexico.
2
Instituto Politécnico Nacional - IPN, Escuela Superior de Ingeniería Química e Industrias
Extractivas, Mexico.
Chemical methods to produce graphene involve strong oxidation of graphite
and its subsequent exfoliation and reduction to obtain reduced graphene oxide
(rGO). Recently, a novel method to produce rGO was proposed, which consists
on the exposure of suspensions of graphene oxide (GO) to microwave
irradiation [1]. More recently, it was shown that when working with dry GO,
which is a common commercial raw material whose shape includes, both
powders and flakes, a certain amount of trapped water is necessary for a
successful process [2]. In this work, we have reduced and exfoliated GO, starting
dry flakes, via microwawe irradiation and the resulting material was
characterized by using different microscopic and spectroscopic techniques.
Special attention was paid to the evaluation of the degree of exfoliation and
electrical conductivity the rGO, by measurements of the BET specific surface
area and the four-probe method, respectively. The results obtained are
explained on the basis of existing deffects in the rGO structure.
[1] Voiry Damien, Yang Jieun, Kumpferberg Jacob, Fullon Raymond, Lee Calvin,
Jeong Hu Young, Shin Hyeon Suk, Chhowalla Manish. High-quality graphene via
microwave reduction of solution-exfoliated graphene oxide. Science. 353 (6306),
1413-1415 (2016).
[2] Iniestra-Galindo M.G., Pérez-González J., Balmori-Ramírez H. B., Flores-
Esperilla A. L. Role of trapped water in the microwave assisted reduction and
exfoliation of graphene oxide. Revista Mexicana de Ingeniería Química, 17 (2),
445-453 (2018).
Keywords: Graphene oxide, Reduction, microwaves
Presenting authors email: igmagpe@hotmail.com