Coşkun, SelimKoziol, Krzysztof2021-01-082021-01-0820161388-07641572-896Xhttp://doi.org/10.1007/s11051-016-3360-yhttps://hdl.handle.net/20.500.12846/271Koziol, Krzysztof/0000-0002-8360-1121; Coskun, Selim/0000-0002-3855-1612WOS:000370151900002Tungsten oxide (WO2) nanorods and nanowires were prepared by the heat treatment of WO2 nanocrystalline powders in the presence of Ar. Nanocrystalline powders produced by a simple water-assisted route at the room temperature were annealed at different temperatures for different durations, which yielded orthorhombic and monoclinic WO2 crystals. Annealing the powders at 700 degrees C and above resulted in orthorhombic WO2 nanorods/nanowires with an average diameter of 60-70 nm beside the monoclinic WO2 nanocrystalline powders with a diameter of similar to 5 nm. The lengths of the nanorods increased from several 100 nm up to several 10 mu m with increasing temperature while their diameters did not change. With increased length, nanowires became more elastic in nature having a cotton-like fabric. The prepared nanostructures have been characterized by X-ray powder diffraction measurements, scanning electron microscopy, transmission electron microscopy, and high-resolution transmission electron microscopy. An oriented attachment mechanism leading to root growth from a parent structure was proposed.eninfo:eu-repo/semantics/closedAccessTungsten Dioxide (Wo2)NanostructuresElectron MicroscopyOriented AttachmentMicrostructureArticle18210.1007/s11051-016-3360-yQ2Q2WOS:0003701519000022-s2.0-85008516517