Comparison between Vanadium Dioxides Produced by Ammonium Metavanadate and Vanadium Pentoxide

Ji Qi; Chen Niu; Ying Mei Xu; Hua Hai; Lei Zou

doi:10.4028/www.scientific.net/AMR.306-307.234

Paper Titles

Synthesis of Main-Chain Polyimides Containing Azoaryl and their Third-Order NLO Properties
p.215

Preparation and Properties of Oxidized Coal/Polyaniline Composite Material
p.220

Synthesis, Crystal Structure and Photoluminescence of Eu(Phen)(DMF)₂(NO₃)₃ (Phen = Phenanthroline and DMF = N,N-Dimethylformamide)
p.224

Synthesis, Characterization and Luminescence of Europium, Terbium Complexes of 1,1'-(Pyridin-2,6-Diyl) Bis-3-P-Tolylpropane-1,3-Dione
p.228

Comparison between Vanadium Dioxides Produced by Ammonium Metavanadate and Vanadium Pentoxide
p.234

Electron Stimulated Surface Chemical Reaction Mechanism for Phosphor Degradation
p.238

Synthesis and Liquid Crystal Properties of a New Organometallic Palladium Complex
p.242

Growth of p-Type AlN Crystals by C and Si Codoping
p.246

Promising Zn₃Ta₂O₈:Pr³⁺ Red Phosphor for Low Voltage Cathodoluminescence Applications
p.251

HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 306-307Comparison between Vanadium Dioxides Produced by...

Comparison between Vanadium Dioxides Produced by Ammonium Metavanadate and Vanadium Pentoxide

Abstract:

The facile processes were developed for synthesizing vanadium dioxide (VO₂) by pyrolyzing ammonium metavanadate (NH₄VO₃) in nitrogen (N₂) flow and by thermal reduction of vanadium pentoxide (V₂O₅) in ammonia gas. X-ray diffraction (XRD), scanning electron microscopy (SEM) and differential scanning calorimetry (DSC) were applied to analyzing the product VO₂. The experimental results indicated that VO₂ microcrystal particles were successfully synthesized from both NH₄VO₃ and V₂O₅. From NH₄VO₃ the product VO₂ presents two kinds of micro morphologies, torispherical and pentagonal prism. The phase transition mainly takes place at 337.8K and 341.8K. The average enthalpy of phase transition is 28.82 J/g. From V₂O₅the product VO₂ presents rhombohedral. The phase transition temperature is approximately 342.6K and the enthalpy of phase transition is 44.90 J/g.

You might also be interested in these eBooks

View Preview

Info:

Periodical:

Advanced Materials Research (Volumes 306-307)

Pages:

234-237

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.306-307.234

Citation:

Cite this paper

Online since:

August 2011

Authors:

Ji Qi, Chen Niu, Ying Mei Xu, Hua Hai, Lei Zou

Keywords:

Ammonium Metavanadate, Microstructure, Phase Transition, Pyrogenation, Vanadium Oxide

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

Citation:

References

[1] M. Soltani, M. Chaker, E. Haddad, R.V. Kruzelecky: Appl. Phys. Lett. Vol. 85 (2004), p.1958.

Google Scholar

[2] T. J. Hanlon, R.E. Walker, J.A. Coath, M.A. Richardson: Thin Solid Films Vol. 405 (2002), p.234.

Google Scholar

[3] P.J. Hood, J.F.De Natale: J. Appl. Phys. Vol. 70 (1991), p.376.

Google Scholar

[4] H.Liu, O.Vasquez, V.R. Santiago, L.Diaz, F.E. Fernandez : J. Lumin. Vol. 108 (2004), p.233.

Google Scholar

[5] X.Yi, C.Chen, L.Liu, Y.Wang, B.Xiong: Infrared Phys. Technol.Vol. 44 (2003), p.137.

Google Scholar

[6] H.Wang, X.Yi, S.Chen, X. Fu : Sens. Actuators A: Phys. Vol. 122 (2005), p.108.

Google Scholar

[7] S. Chen, H. Ma, X. Yi, T. Xiong, H.Wang, C. Ke : Sens. Actuators A: Phys. Vol.115 (2004), p.28.

Google Scholar

[8] D.Yin, N. Xu, J. Zhang, X. Zheng : Mater. Res. Bull. Vol. 31 (1996), p.335.

Google Scholar

[9] G. Xu, P. Jin, M. Tazawa, K.Yoshimura: Appl. Surf. Sci. Vol. 244 (2005), p.449.

Google Scholar

[10] G.Guzman, R.Morineau, J. Livage : Mater. Res. Bull. Vol. 29 (1994), p.509.

Google Scholar

[11] L. Mai, W. Chen, Q. Xu, J. Peng, Q. Zhu : Int. J. Nanosci.Vol. 3 (2004), p.225.

Google Scholar

[12] W. Chen, J. Peng, L. Mai, H. Yu, Y. Qi : Solid State Communi. Vol. 132 (2004), p.513.

Google Scholar

[13] J. Liu, Q. Li, T.Wang, D.Yu, Y. Li : Angew. Chem. Int. Ed. Vol. 43 (2004), p.5048.

Google Scholar

[14] Ch. Leroux, G. Nihoul, G.Van Tendeloo: Phys. Rev. B Vol. 57 (1998), p.5111.

Google Scholar

[15] J.Qi, G.Ning, Y.Lin: Mater. Res. Bull. Vol. 43(2008), p.2300.

Google Scholar

[16] L. Whittaker, C. Jaye, Z. Fu, D. A. Fischer, S. Banerjee: J. Am. Chem. Soc.Vol.131(2009), p.8884.

Google Scholar