Conductometric sensing characteristics of nanoplatelet Bi2WO6 as nanosensor for hydrogen detection

Abstract

In this work, nanoplatelets of Bi2WO6 were synthesized by facile co-precipitation method followed by physical processing of the precipitate using ultrasonic waves. The X-Ray diffraction (XRD) results confirmed the orthorhombic structure of Bi2WO6, whereas the field emission scanning electron microscopy (FESEM) images revealed nanoplatelet morphology. Chemical analysis was done using X-ray photoelectron spectroscopy (XPS). Thus formation mechanism Bi2WO6 nanoplatelets (NPs) by the method of co-precipitation coupled with ultrasonic waves has been discussed. Gas sensing property of as synthesized Bi2WO6 nanoplatelets was analysed using hydrogen as target gas, a first of its kind. Interestingly a significant decrease in operating temperature was noticed when compared to the available reports for which the mechanism has been demonstrated.In this work, nanoplatelets of Bi2WO6 were synthesized by facile co-precipitation method followed by physical processing of the precipitate using ultrasonic waves. The X-Ray diffraction (XRD) results confirmed the orthorhombic structure of Bi2WO6, whereas the field emission scanning electron microscopy (FESEM) images revealed nanoplatelet morphology. Chemical analysis was done using X-ray photoelectron spectroscopy (XPS). Thus formation mechanism Bi2WO6 nanoplatelets (NPs) by the method of co-precipitation coupled with ultrasonic waves has been discussed. Gas sensing property of as synthesized Bi2WO6 nanoplatelets was analysed using hydrogen as target gas, a first of its kind. Interestingly a significant decrease in operating temperature was noticed when compared to the available reports for which the mechanism has been demonstrated.