Electrochemical Response for Spherical and Rod Shaped WO 3 Nanoparticles

Abstract

A rapid and new technique describes synthesis technique of spherical and rod shaped tungsten trioxide (WO 3 ) nanoparticles with similar band gap at visible wavelength. Acid catalyzed exothermic reaction and structure directing reagent follows the formation of two different morphologies and monoclinic WO 3 phase. Rod shaped WO 3 nanoparticle coated ITO glass electrode exhibits high current density at identical low voltage and scan rate due to its better adherence and coating uniformity in comparison with spherical nanoparticles. WO 3 -ITO electrode alters to blue tungsten bronze in color at low voltage, and further the color restores after removing the same applied voltage.