aKey Laboratory of Nanostructured Materials, Qingdao University of Science and Technology, Qingdao 266042, PR China Received 20 November 2006; accepted 11 January 2007. Available online 17 January 2007.
V2O5·xH2O bundle-like nanostructures composed of nanobelts have been synthesized by a simple hydrothermal method with the aid of Co2+. The widths, thickness and lengths of V2O5·xH2O nanobelts are 80–100 nm, 10–20 nm, and several micrometers, respectively. The morphologies and the crystallographic structures of the V2O5·xH2O bundle-like nanostructures were characterized by X-ray powder diffraction (XRD), field-emission scanning electron microscopy (FE-SEM), transmission electron microscopy (TEM) and electron diffraction (ED). The effects of the inorganic ions and reaction temperature on the morphologies of the resulting products have been investigated.