Preparation of tungsten trioxide film with mesoporosity by anodisation
by Shizhao Wu; Yuru Li; Jing Gao; Guohua Li; Xiaojuan Wang
International Journal of Nanomanufacturing (IJNM), Vol. 14, No. 3, 2018

Abstract: The mesostructured WO₃ film on tungsten was investigated by anodic oxidation in ethylene glycol electrolytes containing low concentrations of ionic liquids (EMim.BF₄, 0.6-1.6 vol. %). The surface structure of the WO₃ film as prepared can be adjusted by changing the time, potential and temperature of anodisation, and the concentration of ILs and water in the electrolyte. The sample was characterised by X-ray diffraction (XRD) and field-emission scanning electron microscope (SEM) respectively. A self-organised mesostructured WO₃ can be obtained under optimised parameters. The mesostructured WO₃ film is arranged in sections of arrays with an average granular diameter of 30 nm.

Online publication date: Thu, 26-Jul-2018

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