A promising approach for highly sensitive LPG detection via synergistic effects of Fe nanoparticle modified graphene

The demand for reliable and efficient gas sensors is increasing due to the growing emphasis on safety in both residential and workplace environments. This study presents a unique approach to improving the effectiveness of liquefied petroleum gas (LPG) sensors. It involves utilizing a composite material consisting of graphene modified with iron nanoparticles (FeNPs) as the gas-sensing material. Main objective of the proposed work is to synthesis Fe-modified Graphene nanoparticles by chemical route synthesis method for different molar concentrations of Fe using a fast and a simple method and to Study the influence of Graphene decorated with Fe nanoparticles with the help of the sensor specification characteristics of this material for different gases and different characterization techniques. This study employs the modified Hummers method to fabricate graphene with exceptional electrical conductivity. Furthermore, a chemical synthesis route has been employed to produce graphene sensors that are modified with Fe NPs at various molar concentrations. The confirmation of the successful integration of Fe NP-modified graphene composite was assessed through the utilization of sophisticated methodologies including scanning electron microscopy (SEM), X-ray diffraction pattern (XRD), Fourier transform infrared spectroscopy (FTIR), Ultraviolet–visible spectroscopy (UV–Vis), and photoluminescence spectroscopy, respectively. This study investigates the gas-sensing capabilities of Fe-modified graphene for LPG at different concentrations and temperatures. At a temperature of 310 K, the 2.0 M Fe-modified graphene pellet exhibited a peak response of 65% when exposed to LPG with a concentration of 500 ppm. The graphene sensor, modified with Fe, demonstrates exceptional selectivity for LPG gas and possesses remarkable repeatability, stability, and rapid response time. The findings indicate that the suggested graphene-based LPG sensor, modified with Fe NPs, exhibits significant promise in fulfilling the growing demand for advanced gas detection technologies in both residential and commercial environments. Additional research endeavors could concentrate on enhancing the design of the sensor, exploring novel metal combinations, and extending its application to other gas detection applications.