title: WO3 nanorods created by self-assembly of highly crystalline nanowires under hydrothermal conditions.
abstract: WO3 nanorods and wires were obtained via hydrothermal synthesis using sodium tungstate as a precursor and either oxalic acid, citric acid, or poly(methacrylic acid) as a stabilizing agent. Transmission electron microscopy images showed that the organic acids with different numbers of carboxylic groups per molecule influence the final sizes and stacking nanostructures of WO3 wires. Three-dimensional electron diffraction tomography of a single nanocrystal revealed a hexagonal WO3 structure with preferential growth along the c-axis, which was confirmed by high-resolution transmission electron microscopy. WO3 nanowires were also spin-coated onto an indium tin oxide/glass conducting substrate, resulting in the formation of a film that was characterized by scanning electron microscopy. Finally, cyclic voltammetry measurements performed on the WO3 thin film showed voltammograms typical for the WO3 redox process.
authors.affiliation: Ecole Normale Supérieure de Lyon, CNRS, Université Lyon 1, Laboratoire de Chimie UMR 5182, 46, Allée d'Italie, F-69364 Lyon cedex 07, France.
authors.forename: Julien R G
authors.initials: JR
authors.lastname: Navarro
authors.forename: Arnaud
authors.initials: A
authors.lastname: Mayence
authors.forename: Juliana
authors.initials: J
authors.lastname: Andrade
authors.forename: Frédéric
authors.initials: F
authors.lastname: Lerouge
authors.forename: Frédéric
authors.initials: F
authors.lastname: Chaput
authors.forename: Peter
authors.initials: P
authors.lastname: Oleynikov
authors.forename: Lennart
authors.initials: L
authors.lastname: Bergström
authors.forename: Stephane
authors.initials: S
authors.lastname: Parola
authors.forename: Agnieszka
authors.initials: A
authors.lastname: Pawlicka