title: Colloidal WO(3) nanowires as a versatile route to prepare a photoanode for solar water splitting.
abstract: This work describes a synthetic method to produce a WO(3) nanowire as well as to prepare photoanodes by colloidal nanowire deposition. We also studied the influence of a nanowire phase on the photoanode performance for water splitting. Among the nanowires synthesized by using nonhydrolytic media, the orthorhombic WO(3)·H(2) O nanowire produced a photoanode with excellent performance (a photocurrent of 1.96 mA cm(-2) at 1.23 V(RHE) ) and good photocurrent stability during long-term analysis (chronoamperometry test). The structural and photoelectrochemical characterization showed the importance of nanostructural features such as exposed (200), (020), and (002) facets and porosity in the WO(3) photoanode performance.
authors.affiliation: Department of Chemistry, Federal University of Sao Carlos, 13565-905 Sao Carlos, SP, Brazil. ricardohg.ufscar@gmail.com
authors.forename: Ricardo H
authors.initials: RH
authors.lastname: Gonçalves
authors.forename: Lucas D T
authors.initials: LD
authors.lastname: Leite
authors.forename: Edson R
authors.initials: ER
authors.lastname: Leite
mesh_terms: D003102:Colloids; D004563:Electrochemistry / Q000379:methods*; D004566:Electrodes; D046529:Microscopy, Electron, Transmission; D053770:Nanowires / Q000737:chemistry*; D010087:Oxides / Q000737:chemistry*; D055668:Photochemical Processes; D016062:Porosity; D012993:Solar Energy; D013499:Surface Properties; D014414:Tungsten / Q000737:chemistry*; D014867:Water / Q000737:chemistry*
chemical_list: D003102:Colloids; D010087:Oxides; D014867:Water; C511604:tungsten oxide; D014414:Tungsten