Enhancement of NO2 gas sensing behavior for ZnS PPy nanostructure by loading graphene

الملخص EN

The pure ZnS and ZnS-Gr nanocomposite have been prepared successfully by a novel method using chemical co-precipitation.

Also conductive polymer PPy nanotubes and ZnS-PPy nanocomposite have been synthesized successfully by chemical route.

The effect of graphene on the characterization of ZnS has been investigated.

X-ray diffraction (XRD) study confirmed the formation of cubic and hexagonal structure of ZnS-Gr.

Dc-conductivity proves that ZnS and ZnS-Gr have semiconductor behavior.

The SEM proved that formation of PPy nanotubes and the Gr nanosheet.

The sensing properties of ZnS-PPy/ZnS-Gr for NO2 gas was investigated as a function of operating temperature and time under optimal condition.

The sensitivity, response time and recovery time were calculated with different operating temperatures.