Nanoflakes of W/WO3 Thin Films Grown by Electrochemical Anodization Method

摘要

To the best of our knowledge there are no reports about synthesizing the tungsten oxide (WO3) nanosflakes patterns on metallic tungsten (W) foil substrate. WO3 nanosflakes was successfully synthesized on the metallic tungsten foil via electrochemical wet etching method. Metallic tungsten foil was used as substrates in this technique. Without using any templates and catalysts, the selforganized W/WO3 nanoflakes can be obtained by simple electrochemical anodization of tungsten foil in 0.5 M NaF solution as the supporting electrolyte, applying a ramp potential of 20 V. The etching duration are 1, 2, and 3 hours at room temperature. After etching, the as-prepared products were characterized by scanning electron microscope (SEM), energy dispersive X-ray analysis (EDX) and X-ray diffraction (XRD).