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

Journal of Materiomics

Can Chen¹  Zhanying Zhang²  Hongyuan Li²  Bowen Zhang²  Shujuan Yao³  Hari Bala³  Jingyi Zhang³ 

[1]Corresponding author. School of Materials Science and Engineering, Henan Polytechnic University, Jiaozuo, 454000, China.

[2]Cultivating Base for Key Laboratory of Environment-friendly Inorganic Materials in University of Henan Province, Henan Polytechnic University, Jiaozuo, 454000, China

[3]School of Materials Science and Engineering, Henan Polytechnic University, Jiaozuo, 454000, China

关键词: Fish-scale-like porous structure;    SnO2 nanosheetes;    Ag nanoparticles;    Triethylamine;    Gas sensor;   

DOI  :  

来源: DOAJ

【 摘 要 】

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 at% exhibited the highest triethylamine sensing sensitivity at optimum work temperature of 170 °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.

【 授权许可】

Unknown