Antimony-doped SnO2 nanoparticles (ATO) are obtained, using a polymer-assisted approach, in the form of fine nanocrystalline powders with superior crystallinity. Gas-sensor devices fabricated with these ATO nanoparticles show good and quick responses (see image), and good recovery, to formaldehyde gas at a low operating temperature of 136 °C..
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Wang et al. (2008) studied this question.
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