Abstracts Book - IMRC 2018

• SD7-O023
CHARACTERIZATION OF ZINC OXIDE NANOPARTICLES GROWN
BY GREEN CHEMISTRY AND ITS POTENTIAL ANTIBACTERIAL USE
Rafael Álvarez Chimal 1,2 , Victor Irahuen García Pérez 2 , Jesús Angel Arenas Alatorre 1
1 Instituto de Física - Universidad Nacional Autónoma de México, Instituto de Física, Mexico.
2 Universidad Nacional Autónoma de México, División de Estudios de Posgrado e Investigación.
Facultad de Odontología, Mexico.
Recently one of the processes to obtain nanoparticles (NPs) that is having great
relevance is the green chemistry method whose objective is to design products
and chemical processes that reduce or eliminate the use of dangerous
substances, the use of plants to carry out these processes is one of the most
used resources. The objective of this work is to synthesize and characterize zinc
oxide NPs using a green chemistry method and test their antibacterial
properties. The extract of the plant Dysphania ambrosioides known as “epazote”
was used as a reaction medium where the synthesis of the ZnO-NPs was carried
out Zn(NO 3 ) 2 as precursor. At the end of the process a white powder was
obtained and was characterized by Analytical Scanning Electron Microscopy
(FSEM), Transmission Electron Microscopy (TEM), Thermal Gravimetric Analysis
(TGA) and X-ray Diffraction (XRD). The results show the obtaining of NPs of size
5-30 nm of ZnO crystalline phase and quasi-spherical shape. The antibacterial
test through antibiogram assay was performed using bacteria’s related to dental
caries and periodontitis. The results were compared with antibacterial
properties of commercial ZnO NPs. These tests showed that synthesized ZnO
NPs inhibited the growth of several bacterial strains, among which those related
to caries and periodontitis stand out.
Acknowledgment:
The authors would like to thanks to Dr. S. Tehuacanero-Cuapa, Fís. R.Hernández
Reyes, M.en C. Jaqueline Cañetas, M.enC. Manuel Aguilar and Arch. Diego
Quiterio for the technical assistance. Also acknowledged is the financial support
PAPIIT—project I IN108418.
Keywords: ZnO nanoparticles, Green Chemistry, Antibacterial
Presenting authors email: rachimal65@hotmail.com