Print

Title: Noble Metal Functionalized MoO3: NiO Nanocomposite for Fabrication of CO2 Gas Sensor

Authors: M.V. Manasa, G. Sarala Devi, B. Sreedhar

 DOI : https://dx.doi.org/10.18535/ijetst/v5i12.01

Abstract

Over the past few years, considerable interest has been focused on semiconducting nanoparticles due to their potential applications in diverse fields including catalysis, magnetic recording media, microelectronics, gas sensors, etc. In our present study, we describe the design, fabrication and gas sensing performance of p-NiO/n-MoO3 (MN) nanocomposites functionalized by noble metal Au (MNA) in order to develop a reliable sensor for CO2 gas detection since it is odorless, highly hazardous and toxic green house gas which affects the environment and human health. The formation of the nanocomposite was systematically reviewed and confirmed by X-Ray Fluorescence Spectroscopy (XRF) and X-Ray Diffraction (XRD) patterns. The MN nanocomposite impregnated with noble metal – Au (MNA) showed better efficiency of S=87.86% towards Carbon dioxide (CO2) gas compared to MN (S=80%) and selectivity towards CO2 in comparison to other interfering gases with superior stability.

Keywords: MoO3: NiO: Au nanocomposite; XRF; Particle size Analyzer; XPS; CO2 Sensor.

Corresponding Author

G Sarala Devi

Email: This email address is being protected from spambots. You need JavaScript enabled to view it., This email address is being protected from spambots. You need JavaScript enabled to view it.; Ph: +91-40-27191532