期刊
SENSORS AND ACTUATORS B-CHEMICAL
卷 164, 期 1, 页码 90-95出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2012.01.063
关键词
NiO-SnO2; Hollow nanostructures; Rapid response; NH3 gas sensor
资金
- Natural Science Foundation Committee (NSFC) [609710]
- Innovation Research Team of Jilin University [201004003]
Hollow NiO-SnO2 nanospheres have been fabricated via a simple one-pot template-free method. The synthesis is based on solvothermal treatment of stannate and nickel nitrate as the precursor in a mixed solvent of heptane-ethanol. The hollow nanospheres show diameters of about 200-300 nm with the wall thickness of about 50 nm, and the shell consists of numerous small nanoparticles. The gas sensor based on hollow NiO-SnO2 nanospheres exhibits high response and quick response-recovery to NH3, which are much better compared with sensors based on solid NiO-SnO2 nanospheres. The enhanced sensor performances are attributed to the larger surface area and fast gas diffusion. (C) 2012 Elsevier B.V. All rights reserved.
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