In-situ synthesis of SnO2/SBA-15 hybrid nanocomposite as highly efficient humidity sensor

- SnO2/SBA-15 mesoporous nanocomposite was synthesized using hydrothermal method.
- SnO2 was loaded in SBA-15 using in-situ and wet impregnation process.
- The prepared nanocomposites performance towards change in relative humidity (RH) was observed in 11-98%RH range.
- The nanocomposite synthesized using in-situ process shows comparatively superior RH sensing characteristics in complete RH range.
- A change of 5.5 orders in impedance magnitude, negligible hysteresis (1.5%) with fast response (15 s) and recovery time (21 s) was observed in 11-98%RH range.