Abstracts Book - IMRC 2018

• SA6-P046
PHOTOCATALYTIC ACTIVITY IN ZnO NANOWIRES ARRAY
OBTAINED BY THERMAL OXIDATION
Oscar Eduardo Cigarroa Mayorga 1 , Angel Guillen Cervantes 2 , Miguel A. Avendaño Ibarra 3 ,
Salvador Gallardo Hernandez 4
1
Centro de Investigación y de Estudios Avanzados del IPN - CINVESTAV, Nanociencia y
nanotecnología, Mexico. 2 Centro de Investigación y de Estudios Avanzados del IPN -
CINVESTAV, Fisica, Mexico. 3 Centro de Investigación y de Estudios Avanzados del IPN -
CINVESTAV, Ingeniería Electrónica, SEES, Mexico. 4 Centro de Investigación y de Estudios
Avanzados del IPN - CINVESTAV, LANE, Mexico.
ZnO nanowires array (ZnO NwA) has acquired attention in recent years due to
the wide applications based on photocatalytic activity such as water purification,
antibacterial devices and environmental cleaning technologies.
In this work ZnO NwA was synthetized by thermal treatment of Zn (99.99 %)
substrate commercially acquired Merc. The substrate was cleaned in HCl 0.5 M
to degrease the Zn foil, and then in a HNO3 2 M solution to remove oxide
surface, finally the substrate was sonicated in water milli-Q and dried with argon
flux. Afterward cleaning process, the substrate was oxidized in furnace at 600 °C
for 5h in a 21 wt. % oxygen atmosphere.
ZnO nanowires achieved over all the substrate was confirmed by Scanning
Electron Microscopy with an average diameter of 100 nm and length of 5 µm.
The X-Ray Diffraction pattern confirms ZnO and Zn phases present in the
obtained samples.
The photocatalytic activity of ZnO NwA was confirmed by measure methylene
blue degradation, showing a 10 % of efficiency.
Keywords: methylene blue, ZnO nanowires, thermal treatment
Presenting authors email: oscarcig@outlook.com