Improved triethylamine sensing properties of fish-scale-like porous SnO2 nanosheets by decorating with Ag nanoparticles

Three dimensional (3D) porous nanostructures assembled by low-dimensional nanomaterials are widely applied in gas sensor according to porous structure which can facilitate the transport of gas molecules. In this work, fish-scale-like porous SnO2 nanomaterials assembled from ultrathin nanosheets with thickness of 16.8 nm were synthesized by a facile hydrothermal route. Then Ag nanoparticles were decorated on the surface of SnO2 nanosheets via one-step method to improve their gas-sensing performances. The sensing properties of pristine SnO2 and Ag/SnO2 nanosheets were investigated intensively. After decorating with Ag nanoparticles, the characteristics of SnO2 based sensor for triethylamine detection were significantly improved. Especially, the Ag/SnO2 based sensor with Ag content of 2 ate exhibited the highest triethylamine sensing sensitivity at optimum work temperature of 170 degrees C. The improved sensing properties of Ag/SnO2 sensors were attributed to the sensitizing actions of Ag nanoparticles as well as the unique hierarchical porous architecture. (C) 2021 The Chinese Ceramic Society. Production and hosting by Elsevier B.V.

Automated summary

Fish-scale-like porous SnO2 nanomaterials assembled from ultrathin nanosheets were synthesized via a facile hydrothermal route, and Ag nanoparticles were decorated on their surface to enhance gas-sensing performances, especially for triethylamine detection. The Ag/SnO2 based sensor exhibited the highest sensitivity at an optimum working temperature of 170 degrees C.