期刊
SENSORS AND ACTUATORS B-CHEMICAL
卷 145, 期 2, 页码 847-853出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2010.01.070
关键词
Sb-doped SnO(2) nanoparticles; High-resolution electron microscopy; Gas sensor; Ammonia
资金
- National Science Foundation of China [50662006]
- Chinese Ministry of Education
Antimony-doped tin dioxide (ATO) nanoparticles with high crystallinity during solvothermal synthesis in alcohol were generated from the inorganic precursors (SnCl(4) and Sb(OC(2)H(5))(3)) and the cationic surfactant (cetyltrimethylammonium bromide, CTAB). The structural and morphological characterizations of the products were performed by X-ray powder diffraction (XRD), transmission electron microscopy (TEM), N(2)-sorption isotherm and X-ray photoelectron spectrum (XPS). The resulting particles were highly crystalline oxide particles in the nanometer range (10-14 nm). The indirect-heating sensors using ATO nanoparticles as sensitive materials were fabricated on an alumina tube with Au electrodes and platinum wires. The sensing properties of these sensors based on ATO nanoparticles were investigated. Compared to the original undoped sensor, the results show that the ATO nanoparticles have about 2.5 times increase in response and good dynamic response to NH(3) at low operating temperature (79 degrees C). (C) 2010 Elsevier B.V. All rights reserved.
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