Journal
SENSORS AND ACTUATORS B-CHEMICAL
Volume 166, Issue -, Pages 519-525Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2012.02.098
Keywords
Meso-macroporous; Hierarchical structure; SnO2; Carbonaceous sphere; Indoor air pollutant
Funding
- National Basic Research Program of China [2011CB933700, 2007CB936603]
- National Natural Science Foundation of China [61071054, 61174012, 21177131]
- Postdoctoral Science Funds [20110490834]
- Youth Scientific Funds, National Natural Science foundation of China [51002157, 61104205]
Ask authors/readers for more resources
Hierarchical meso-macroporous SnO2 was synthesized by a sol-gel process using carbonaceous spheres as sacrificial templates. The morphology of meso-macroporous structures can be controlled by adjusting the sintering temperature. Compared with the traditional SnO2, the hierarchical meso-macroporous SnO2 exhibited higher gas response and shorter response and recovery times in detecting indoor air pollutants including ethanol, benzene and toluene. With regard to the gas sensing property, mesopores provide plenty of active sites for surface chemical reactions, on the one hand. On the other hand, the gas diffusion in the sensing film can be improved by macropores greatly. The morphology and structures were characterized by field emission scanning electron microscopy (SEM), transmission electron microscopy (TEM). X-ray diffraction (XRD), thermogravimetric analysis (TGA) and Brunauer-Emmett-Teller (BET) respectively. (C) 2012 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available