1 research outputs found
MWCNTs/Fe<sub>2</sub>O<sub>3</sub>:ZnO Nanocomposite Material for Chemoresistive Sensing of Hydrogen Peroxide Vapors
Hydrogen peroxide is widely used in medical and industrial
applications,
and the rapid detection of low concentrations of its vapor is considered
to be a major challenge. In this study, we have successfully implemented
the fabrication of an MWCNTs/Fe2O3:ZnO chemoresistive
sensor for hydrogen peroxide vapor (HPV) detection using RF magnetron
sputtering and electron-beam deposition methods. The material properties
of the MWCNTs/Fe2O3:ZnO structure were characterized
in detail using scanning electron microscopy (SEM), energy-dispersive
X-ray (EDX) elementary analysis, and transmission electron microscopy
(TEM). The HPV sensing performances of the sensors were investigated
in the temperature range 25–250 °C with and without ultraviolet
(UV) irradiation. Sensor response values ranged from 35 to 1043 and
from 7.3 to 198 at operating temperatures of 100 °C (without
UV irradiation) and 150 °C (with UV irradiation), respectively,
in the HPV concentration range of 1.5–22 ppm. Therefore, the
Fe2O3:ZnO material decorated with MWCNTs is
a promising candidate for integration into real-life HPV detection
systems