title: Photoanodes based on nanostructured WO3 for water splitting.
abstract: Anodically grown WO(3)  photoelectrodes prepared in an N-methylformamide (NMF) electrolyte have been investigated with the aim of exploring the effects induced by anodization time and water concentration in the electrochemical bath on the properties of the resulting photoanodes. An n-type WO(3)  semiconductor is one of the most promising photoanodes for hydrogen production from water splitting and the electrochemical anodization of tungsten allows very good photoelectrodes, which are characterized by a low charge-transfer resistance and an increased spectral response in the visible region, to be obtained. These photoanodes were investigated by a combination of steady state and transient photoelectrochemical techniques and a correlation between photocurrent produced, morphology, and charge transport has been evaluated.
authors.affiliation: Istituto ENI Donegani, Via Fauser 4, 28100, Novara, Italy. alessandra.tacca@eni.com
authors.forename: Alessandra
authors.initials: A
authors.lastname: Tacca
authors.forename: Laura
authors.initials: L
authors.lastname: Meda
authors.forename: Gianluigi
authors.initials: G
authors.lastname: Marra
authors.forename: Alberto
authors.initials: A
authors.lastname: Savoini
authors.forename: Stefano
authors.initials: S
authors.lastname: Caramori
authors.forename: Vito
authors.initials: V
authors.lastname: Cristino
authors.forename: Carlo Alberto
authors.initials: CA
authors.lastname: Bignozzi
authors.forename: Victoria
authors.initials: V
authors.lastname: Gonzalez Pedro
authors.forename: Pablo P
authors.initials: PP
authors.lastname: Boix
authors.forename: Sixto
authors.initials: S
authors.lastname: Gimenez
authors.forename: Juan
authors.initials: J
authors.lastname: Bisquert