Abstract

V ₃O₇H₂O nanobelts were prepared by a hydrothermal method at 190 C using V ₂O₅nH₂O gel and H₂C₂O₄2H₂O as starting agents. The nanobelts obtained have diameters ranging from 40 to 70 nm with lengths of up to several micrometers. Their morphology and structure have been characterized by XRD, SEM, TEM and IR spectroscopy. The effect of the annealing temperature on the morphology of the resulting product has been investigated. XRD and SEM showed that thermal annealing of the V ₃O₇H₂O sample in air led to the collapse of the V ₃O₇H₂O nanobelt structure and the convert into V ₂O₅ nanobelts. For the first time V ₂O₅ nanobelts with an ultrahigh aspect-ratio have been obtained in air. Furthermore, electrical conductivity and static magnetic susceptibility measurements have been carried out.

Keywords: A. Nanostructures; B. Chemical synthesis; C. Scanning and transmission electron microscopy

PACS classification codes: 61.82.Rx; 68.37.Hk; 68.37.Lp; 65.80.+n; 51.60.+a; 51.50.+v; 61.05.cp

Article Outline

1. Introduction

2. Experimental

3. Result and discussion

4. Conclusion

Acknowledgements

References