H2S Sensor Based on Cr2O3‐ɣFe2O3 Nanoparticles Synthesized via Photolysis Method

A H 2 S gas sensor has been manufactured using Cr 2 O 3 ‐ɣFe 2 O 3 nanoparticles with ratios of (2:1, 1:1, and 1:2), using the photolysis method. The chemical composition and microstructure of the resulting samples were characterized using XRD, EDx, and SEM. The sensor’s gas‐sensing performance was examined at various operating temperatures ranging from 100°C to 250°C. The results demonstrated that the sensor had optimal response in detecting H 2 S gas at a ratio of 1:2. Furthermore, the discussion revolved around the sensor’s sensing mechanism specifically for H 2 S.