Abstract
Herein, sheet like WO3 nanostructures were synthesized by facile hydrothermal method in the presence and absence of urea. The phase formation and crystallinity of the synthesized samples were investigated by using powder X-ray diffraction technique, which revealed that the synthesized nanostructures in the presence of urea showed the high crystalline quality than the nanostructures synthesized in the absence of urea. Morphology and size of the synthesized nanostructures were identified from field-emission scanning electron microscope and transmission electron microscopy characterizations, which showed the sheet like morphology. The optical band gap was calculated as 2.57 and 3.03 eV for WO3 nanostructures synthesized in the presence and absence of urea respectively. Moreover, the photocurrent density was measured to study the photoelectrochemical water splitting performance of the synthesized nanostructures. The photocurrent density of 0.800 mA cm−1 at 1.2 V s. Ag/AgCl and 0.011 mA cm−1 at 1.2 V s. Ag/AgCl for WO3 nanostructures synthesized in the presence and absence of urea respectively. The higher photocurrent density of the WO3 nanostructures synthesized in the presence of urea was due to the improved charge transport property.
Published Version
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