Fabrication of polypyrrole/tin oxide/graphene nanoribbon ternary nanocomposite and its high-performance ammonia gas sensing at room temperature

In this study, the polypyrrole (PPy)/tin oxide (SnO2)/graphene nanoribbon (GNR) ternary nanocomposites are successfully synthesized using in situ chemical oxidative polymerization. In doing so, the SnO2 nanoparticles fabricated using a solvothermal reaction are coated on the surface of the GNR. The gas sensing performances of nanocomposites at room temperature are estimated by a homemade dynamic test system, equipped with a simultaneous...