Abstracts Book - IMRC 2018

• SA1-P045
SYNTHESIS OF CARBON NANO ONIONS DOPED WITH Fe AND N
FOR APPLICATIONS IN SUPER CAPACITORS
Eduardo Tovar Martínez 1 , Jorge Valentin Cabrera Salazar 2 , Roman Lopez Sandoval 2 , Marisol
Reyes Reyes 3
1
Instituto Potosino de Investigación Científica y Tecnológica A.C., División de Materiales
Avanzados, Mexico. 2 Instituto Potosino de Investigación Científica y Tecnológica, División de
Materiales Avanzados, Mexico. 3 Universidad Autónoma de San Luis Potosí, IICO, Mexico.
Structures encapsulating nanoparticles with a certain phase can protect this
phase against the effects of degradation of the environment and at the same
time preserve their intrinsic properties. In some cases, the structures
encapsulating nanoparticles can be carbon nanotubes or carbon nano-shells.
The encapsulation of nanoparticles has attracted the attention for its promising
applications, such as in information technology, biomedicine. In some cases of
interest for technological applications, such as in the case of gas sensors, it is
not necessary that the carbon layers are encapsulating nanoparticles, that is,
they are hollow carbon nanoparticles. In other cases, these carbon
nanoparticles are quasi-spherical and consist only of concentric graphene
layers.
Carbon nano onions (CNOs) have shown good characteristics for their use in
electrical double layer capacitors (EDLC) because they can be synthesized with
diameters < 10 nm, which make them attractive for their use in EDLC. In this
work, we report the synthesis of CNOs doped with nitrogen, which encapsulate
iron and iron carbide nanoparticles. These materials were synthesized using
spray pyrolisis at 850 °C. The reaction mixtures contained ethanol and
isopropanol, as the main sources of carbon, and benzylamine, as agent
containing the nitrogen dopant, and a ferrocene as a catalyst. This synthesis
method of CNOs is a low cost process and very good controlled, we only obtain
carbon nano-onions, i.e. no contamination of some other carbon
nanostructures such as nanotubes, nanofibers, among others in the final yield.
Acknowledgment:
To the M. in C. Beatriz Adriana Rivero Escoto for supporting me in obtaining the
X-ray diffractograms and Raman spectra shown in this work. To Dr. Héctor
Gabriel Silva Pereyra for obtaining the HRTEM micrographs. To LINAN for