| 초록 |
Pure and metal incorporated nanocrystalline SnO2 gas sensing materials were synthesized using a modified Pechini route and sol-gel method. The systematic study of noble metal incorporation in SnO2 revealed correlation of metal concentration with the particle size and sensing properties. Interestingly, incorporation of noble metal in the SnO2 results in the decrease in particle size as compared to that with pure SnO2. Moreover, the sensor exhibited a reasonably good sensitivity with fast response towards reducing gas such as H2, LPG, and CO. The effect of Noble metal incorporation, operating temperature, and gas concentration on the structure, morphology and sensitivity is established using techniques like X-ray diffraction (XRD), Scanning electron microscopy (SEM) and energy dispersive X-ray analysis (EDX) along with sensing properties. |
