Experimental Validation of TiO₂ Shielded ZnO Nanorods Synthesized via Low-Temperature Solution-Based Method for Sewage System [Gas (CO and CH₄) and Acceleration Sensing]

Introduction A structured elucidation of the multifunctional sensing performance of varying concentrations (1, 3 and 5 wt%) of titanium dioxide-shielded zinc oxide nanorods on fluorine-doped tin oxide substrates was done.Fabrication Method and Material characterization The sensor was fabricated using a low-temperature hydrothermal method. The structural and morphological investigation depicts the formation of zinc oxide hexagonal wurtzite structure and the nanorods' morphology, respectively. A decreased bandgap of 3.15 eV (5 wt% of titanium dioxide) was calculated using Tauc plot. The transport properties were rooted out which proclaims the p-n junction formation and reduced internal resistance of 75 omega (3 wt% of titanium dioxide).Conclusion The experimental gas sensing evaluation (10 ppm) reveals an improved sensitivity of 5 wt% of titanium dioxide (0.65-methane; 0.89-carbon monoxide) shielded sensor. Similarly, the acceleration sensing exploration delineates the increased sensitivity (2.6 V/g) of 3 wt% of titanium dioxide shielded sensor.