Title: Preparation of tungsten trioxide film with mesoporosity by anodisation

Authors: Shizhao Wu; Yuru Li; Jing Gao; Guohua Li; Xiaojuan Wang

Addresses: School of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310032, China ' School of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310032, China ' School of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310032, China ' School of Chemical Engineering; State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Zhejiang University of Technology, Hangzhou 310032, China ' Ningbo Academy of Inspection and Quarantine, Ningbo 315012, China

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.

Keywords: tungsten oxide; anodising; nanostructure; mesoporous; ILs; nanomanufacturing.

DOI: 10.1504/IJNM.2018.093476

International Journal of Nanomanufacturing, 2018 Vol.14 No.3, pp.259 - 267

Received: 16 May 2017
Accepted: 26 Oct 2017

Published online: 25 Jul 2018 *

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