A sensitive face: Polyhedral ZnSnO3 microcrystals with controlled exposed facets are selectively synthesized in high yield by a convenient, repeatable, and low-temperature process (see image). The polyhedral ZnSnO3 particles have good gas-sensing properties and show high sensitivity to H2S, HCHO, and C2H5OH, as well as good reproducibility and short response/recovery times. Different shapes of ZnSnO3 polyhedra have unique gas sensitivity to the detected gases because of their different active facets.
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Geng et al. (2008) studied this question.
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