Abstracts Book - IMRC 2018

• SF2-P068
PREPARATION, CHARACTERIZATION AND PHOTOCATALYTIC
ACTIVITY OF ZnO PELLETS
Mar?a del Rosario Herrera Rivera 1 , Jacob Morales Bautista 1 , Maria de la Luz Olvera Amador 1,2 ,
Arturo Maldonado Alvarez 1,2
1 CINVESTAV-IPN, Programa de Doctorado en Nanociencias y Nanotecnología, Mexico.
2 CINVESTAV-IPN, Departamento de Ingeniería Eléctrica-Sección de Electrónica del Estado
Sólido, Mexico.
Zinc Oxide (ZnO) nanoparticles were synthesized by homogeneous precipitation
technique. The preparation procedure consisted of mixing of zinc acetate
(Zn(CH3COO)2.2H2O) as precursor in 60 ml of deionized water (H2O),
ammonium carbonate ((NH4)2CO3), dissolved in H2O was used as precipitant
agent. The solution was centrifuged at 4500 rpm for 6 min. Then, the resultant
past is thrice washed with methanol and dried to 100°C and calcined in air at
400°C for 2 h. The obtaining powders were characterized by X-ray Diffraction
(XRD) for analyzing their structure. The particles morphology (size and shape)
was analyzed from the Transmission Electron Microscopy (TEM) and Scanning
Electron Microscopy (SEM) images. To study the photocatalytic activity, the ZnO
powders were pressed in pellet form in a hydraulic press. The ZnO pellets were
tested by measurement of degradation of methylene blue (MB) using a
homemade annular reactor with a UV lamp as a light source. The evolution of
the MB concentration was followed by UV–vis spectrometry.
Keywords: ZnO, Nanoparticles, Photocatalytic activity
Presenting authors email: rherrera@cinvestav.mx