4.7 Article

Nickel Oxide-Carbon Soot-Cellulose Acetate Nanocomposite for the Detection of Mesitylene Vapour: Investigating the Sensing Mechanism Using an LCR Meter Coupled to an FTIR Spectrometer

Journal

NANOMATERIALS
Volume 12, Issue 5, Pages -

Publisher

MDPI
DOI: 10.3390/nano12050727

Keywords

mesitylene; carbon nanoparticles; nickel oxide nanoparticles; nanocomposite; in situ FTIR; gas sensors

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Nanocomposite sensors were prepared using carbon soot, nickel oxide nanoparticles, and cellulose acetate to detect mesitylene vapor at room temperature. Among all the sensors prepared and tested, the ternary nanocomposites (NiO-CNPs-CA) were found to be the most sensitive for the detection of mesitylene.
Nanocomposite sensors were prepared using carbon soot (CNPs), nickel oxide nanoparticles (NiO-NPs), and cellulose acetate (CA), which was used to detect and study the sensing mechanism of mesitylene vapour at room temperature. Synthesised materials were characterised using high-resolution transmission electron microscopy (HR-TEM), powder x-ray diffraction (PXRD), Raman spectroscopy, and nitrogen sorption at 77 K. Various sensors were prepared using individual nanomaterials (NiO-NPs, CNPs, and CA), binary combinations of the nanomaterials (CNPs-NiO, CNPs-CA, and NiO-CA), and ternary composites (NiO-CNPs-CA). Among all of the prepared and tested sensors, the ternary nanocomposites (NiO-CNPs-CA) were found to be the most sensitive for the detection of mesitylene, with acceptable response recovery times. Fourier-transform infrared (FTIR) spectroscopy coupled with an LCR meter revealed that the mesitylene decomposes into carbon dioxide.

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