Vol. 137, Issue 2, February 2012, pp. 59-65

Abstract: This paper presents H₂S gas sensing properties of WO₃ pellets at room temperature. In this work, the WO₃ pellets were prepared by standard solid state method. The prepared pellets were characterized by x-ray diffraction (XRD) measurements and scanning electron microscopy (SEM). The H₂S gas sensing properties of WO₃ pellets were investigated at room temperature and at different concentrations of gas. The WO₃ pellet exhibit excellent H₂S gas sensing properties in air atmosphere at room temperature with fast response and recovery time.

Keywords: WO₃ Pellet, Solid state method, H₂S gas

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