Abstract
SnO2 microplatelets were fabricated by oxidizing SnO microplatelets which were synthesized via dissolution-recrystallization with aid of sonication. The microplatelets were both characterized by X-ray diffraction, thermogravimetric analyses and differential scanning calorimetry, and field-emission scanning electron microscopy. The as- synthesized SnO2 microplatelets are consist of round corner square platelets structures with side length of 8–13 μm and thickness of 2–4 μm. The sensing properties of the sensors fabricated from SnO2 microplatelets were investigated at 4.5 V working voltage. Our results show that the sensors exhibit the excellent gas-sensing properties toward H2S in terms of sensitivity and selectivity.
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