Abstract
Synthesis of nano-zinc oxide-oxidized multiwall carbon nanotubes (ZnO-OMWCNTs) nanocomposite with different weight percentages of OMWCNTs via a multistep procedure has been described. The structure of this newly synthesized ZnO-OMWCNT was fully characterized by X-ray diffraction, scanning electron microscopy, Raman spectroscopy, and Fourier-transform infrared (FT-IR) techniques. In this research, nano-ZnO-OMWCNTs with different weight percentages of oxidized multiwall carbon nanotubes (X = 0, 0.1, 0.5, 1, and 2 wt%) were prepared. Alumina substrate with gold electrodes was labeled by sputtering, and then, the nanocomposite was deposited using spin coating machine. The sensor efficiency of nano-ZnO-OMWCNTs as recyclable nanosensor was explored in probe of nitrous oxide (NOx) gas at the concentration of 20–40 ppm NOx and evaluated at different temperatures (150–300 °C). Detection of NOx gas by ZnO-OMWCNTs sensor was studied under different experimental conditions, and the results were compared by previous studies with ZnO and another metal oxide. The results show that the responsiveness, detection range, and optimum temperature of ZnO-OMWCNTs sensor performance at 250 °C were improved compared to other works. Also, adding 1 wt% of multiwall carbon nanotubes functionalized (FMWCNT) leads to an increase in sensitivity and reduces the operating temperature to 150 °C.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
