Synthesis and ethanol gas sensing properties of mesoporous perovskite-type BaSnO3 nanoparticles interconnected network

In this paper, we propose a mannitol assisted-hydrothermal and annealing route for synthesis of mesoporous BaSnO3 nanoparticles interconnected network. After sintered at 800 °C, the BaSnO3 ceramic powder maintains high crystalline degree and large specific surface area of 121.9 m2/g. The BaSnO3 nanoparticles connect with each other by forming crystalline bridges. The mannitol plays a role of soft template to construct the mesoporous three-dimensional interconnected network. These features make the mesoporous BaSnO3 nanoparticles interconnected network has enhanced gas-sensing performance to ethanol at 350 °C.