Synthesis of Tungsten Oxide Nanoparticles using a Hydrothermal Method at Ambient Pressure

Majid Ahmadi; Reza Younesi; Maxime J-F Guinel

doi:10.1557/jmr.2014.155

Synthesis of Tungsten Oxide Nanoparticles using a Hydrothermal Method at Ambient Pressure

Materials Science 2017-05-24 v1

Authors: Majid Ahmadi , Reza Younesi , Maxime J-F Guinel

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Abstract

Tungstite (WO3.H2O) nanoparticles were synthesized using a simple and inexpensive low temperature and low pressure hydrothermal method by adding hydrochloric acid to diluted sodium tungstate solutions (Na2WO4.2H2O) at temperatures below 5oC. A heat treatment at temperatures at or above 300oC resulted in a phase transformation to monoclinic WO3, while preserving the nanoparticles morphology. The products were characterized using powder x-ray diffraction, transmission electron microscopy (including electron energy-loss spectroscopy and electron diffraction) and x-ray photoelectron spectroscopy.

Keywords

tungsten oxide nanoparticles hydrothermal synthesis phase transformation tungstite monoclinic WO3

Cite

@article{arxiv.1404.2612,
  title  = {Synthesis of Tungsten Oxide Nanoparticles using a Hydrothermal Method at Ambient Pressure},
  author = {Majid Ahmadi and Reza Younesi and Maxime J-F Guinel},
  journal= {arXiv preprint arXiv:1404.2612},
  year   = {2017}
}

Comments

11 pages, 1 table and 5 figures

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