Abstracts Book - IMRC 2018

• SD5-P003
HEXAGONAL ZNO NANOCRYSTALS OBTAINED BY VARIOUS
CHEMICAL ROUTES
Danelia del Carmen Sanchez Pedrero 1 , Osiris Escamilla Luna 1 , Fabiola del Carmen Gomez
Torres 1 , Saul García López 1 , Ma Guadalupe Garnica Romo 2 , Laura Lorena Díaz Flores 1
1 Universidad Juárez Autónoma de Tabasco, División Académica de Ingeniería y Arquitectura,
Mexico. 2 Universidad Michoacana de San Nicolás de Hidalgo, Facultad de Ingeniería Civil,
Mexico.
The ZnO nanocrystals have its potential applications due to the increase of the
ratio surface-volume, in technologies such as the improvement of response
time of gas sensors, as reducers of operating temperatures and for increase the
sensitivity of ZnO used in nanoparticle form. This research compares the
morphology and structure of nanoparticles of ZnO obtained by different
processes of chemical synthesis. Aqueous synthesis routes were the Sol-gel and
the forced hydrolysis, which were carried out using organic precursors of zinc
acetate, monoethanolamine and isopropyl alcohol, in acidic and basic pH
respectively. On the other hand, the method of synthesis of powders used was
the mechanochemistry, where inorganic precursors such as ZnCl2, NaCl and
NACO3 were used for the obtaining of ZnO. Zinc oxide powders thus obtained,
were analyzed by HRTEM, finding that ZnO nanoparticles vary in size from 200
to 50 nm with nanocrystals of sizes less than 20 nm. With X-Ray diffraction
patterns were indexed plans 101, 100,102 y110 for hexagonal wurtiza.
Acknowledgment:
Financial support of this research was provided by CONACYT under Project No
2015-01-256221 and INFRA CONACYT 2014 225962
Keywords: ZnO Nanocrystals, HRTEM images of ZnO nanoparticles, Chemical routes
for ZnO synthesis
Presenting authors email: iq_danelia@hotmail.com