Scalable one-step synthesis of TiO2/WO3 films on titanium plates with an efficient electron storage abilityElectronic supplementary information (ESI) available: Experimental details, TEM of WO3, XRD patterns of control samples, Raman spectrum, photocurrent transients, phenol photooxidation, and elementary contents. See DOI: 10.1039/c5ta01913c

We describe a scalable method to synthesize TiO 2 /WO 3 film electrodes through a one-step oxidation of Ti plates in a mixture of H 2 O 2 and peroxotungstic acid solution. This composite film with a relatively low content of hexagonal phase WO 3 displayed an excellent electron storage ability. This study describes a new scalable method to prepare TiO 2 /WO 3 film electrodes with an efficient electron storage ability through one-step oxidation of Ti plates in a mixture of H 2 O 2 and peroxotungstic acid solution.