Synthesis of SnO2-nanoparticle-decorated SnSe nanosheets and their gas-sensing properties
Yuanyuan Wang,
Nan Li,
Haixin Zhao,
Xin Liu,
Xiaotian Li
Affiliations
Yuanyuan Wang
Key Laboratory of Automobile Materials (Jilin University), Ministry of Education, College of Materials Science and Engineering, Jilin University, Changchun 130012, People’s Republic of China
Nan Li
Key Laboratory of Automobile Materials (Jilin University), Ministry of Education, College of Materials Science and Engineering, Jilin University, Changchun 130012, People’s Republic of China
Haixin Zhao
Key Laboratory of Automobile Materials (Jilin University), Ministry of Education, College of Materials Science and Engineering, Jilin University, Changchun 130012, People’s Republic of China
Xin Liu
Department of Physics, Harbin University of Science and Technology, Harbin 150080, People’s Republic of China
Xiaotian Li
Key Laboratory of Automobile Materials (Jilin University), Ministry of Education, College of Materials Science and Engineering, Jilin University, Changchun 130012, People’s Republic of China
Selectivity is still a major problem in gas sensors. In this study, we fabricated a novel sensor material, tin oxide (SnO2) nanoparticle decorated tin selenide (SnSe) nanosheets (SnO2/SnSe), via a simple solvothermal method. SnO2 nanoparticles of size ∼10 nm were anchored on the surface of SnSe nanosheets. The gas-sensing performances of SnO2/SnSe composites calcined at different temperatures were compared. Methylbenzene-sensing performance analysis performed at different temperatures and concentrations showed that SnO2/SnSe composites exhibited preferable sensitivity, excellent selectivity, and a good response rate. The improved sensing properties, especially the selectivity, are attributed to the appropriate heterojunction of SnO2 nanoparticle decorated SnSe nanosheets.
