2024   02   en   p.17-20 Nahida MusayevaA, Hadiya KhalilovaA, Sevinj GuluzadeB, Baxhtiyar IzzetovA, M. AlizadaA,
NO2 gas sensing properties of MWCNTs/NiO nanocomposite		  pdf 

ABSTRACT

This study explores the influence of nickel oxide (NiO) nanoparticles on the nitrogen dioxide (NO2) gas-sensing properties of multi-walled carbon nanotubes (MWCNTs). Initially, MWCNTs functionalized with oxygen-containing groups exhibited modest sensitivity to NO2 gas, and insignificant change in resistance was observed when exposed to other oxidizing and reducing gases. Following the decoration of functionalized MWCNTs (f-MWCNTs) with NiO nanoparticles, significant enhancement in NO2 sensing responses was achieved at room temperature. The study highlights improved selectivity and elucidates the catalytic role of NiO nanoparticles in the gas-sensing mechanisms of these structures. It was found that although the sensitivity to NO2 gas increases with increasing NiO nanoparticle concentration, the mechanism of sensitivity does not change.

Keywords: nickel oxide, f-MWCNTs/NiO, sensor, NO2 gas, catalytic.
PACS: 62.23Pq; 74.25nd; 81.05 U; 81.07 -b

DOI:-

Received: 02.05.2024
Internet publishing: 28.06.2024

AUTHORS & AFFILIATIONS

A. Institute of Physics, Ministry of Science and Education of Azerbaijan, AZ-1143, Baku, Azerbaijan, 131 H. Javid ave.
B. Khazar University, Baku, Azerbaijan

Graphics and Images

                   

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