FACILE SYNTHESIS OF LOW BAND GAP ZnO MICROSTRUCTURES

  • Victor Manuel Ovando Medina Universidad Autonoma de San Luis Potosi
  • Lorena Farías Cepeda, Dra. Universidad Autónoma de Coahuila
  • Nancy Veronica Pérez Aguilar, Dra. Universidad Autónoma de Coahuila
  • Javier Rivera de la Rosa, Dr. Universidad Autónoma de Nuevo León
  • Hugo Martínez Gutiérrez, Dr. Instituto Politécnico Nacional
  • Adolfo Romero Galarza, Dr. Universidad Autónoma de Coahuila
  • Elsa Cervantes González, Dra. Universidad Autónoma de San Luis Potosí
  • Nicolas Cayetano Castro, Dr. Instituto Politécnico Nacional

Abstract

In this work a simple chemical route was employed to synthesize ZnO nanoparticles by precipitation from aqueous solution of ZnCl2 as precursor, NaOH as oxidizing and sodium dodecyl sulfate (SDS) as surfactant. Samples of ZnO nanoparticles were analyzed by scanning electron microscopy (SEM), FTIR spectroscopy, Raman spectroscopy, X-Ray diffraction, UV/Vis-NIR diffuse reflectance, high resolution transmission electron microscopy (HR-TEM), and N2 adsorption-desorption. It was observed from SEM analysis that ZnO nanoparticles with morphologies resembling six-blade impeller with diameters in the range of 500 nm to 1 mm, and sheet-like (approximately 200 × 300 nm) were obtained through this technique. X-Ray diffraction and Raman analyses confirmed the obtaining of hexagonal wurtzite ZnO crystal structure. The calculated band gap energy was 3.19 eV, which is slightly lower than the average value reported in the literature. Specific BET area of ZnO nanoparticles was 26.5 m2/g.

Published
Jan 31, 2018
How to Cite
OVANDO MEDINA, Victor Manuel et al. FACILE SYNTHESIS OF LOW BAND GAP ZnO MICROSTRUCTURES. Revista Mexicana de Ingeniería Química, [S.l.], v. 17, n. 2, p. 455-462, jan. 2018. ISSN 2395-8472. Available at: <http://rmiq.org/ojs/index.php/rmiq/article/view/236>. Date accessed: 20 feb. 2018.

Received 31 August 2017, published online 31 January 2018