MJEJRI, Issam; ROUGIER, Aline; GAUDON, Manuel

doi:10.1021/acs.inorgchem.6b02880

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MJEJRI, Issam
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]

ROUGIER, Aline
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]

GAUDON, Manuel
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]

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Inorganic Chemistry. 2017-02-06, vol. 56, n° 3, p. 1734-1741

American Chemical Society

Résumé en anglais

In this study, vanadium sesquioxide (V2O3), dioxide (VO2), and pentoxide (V2O5) were all synthesized from a single polyol route through the precipitation of an intermediate precursor: vanadium ethylene glycolate (VEG). Various annealing treatments of the VEG precursor, under controlled atmosphere and temperature, led to the successful synthesis of the three pure oxides, with sub-micrometer crystallite size. To the best of our knowledge, the synthesis of the three oxides V2O5, VO2, and V2O3 from a single polyol batch has never been reported in the literature. In a second part of the study, the potentialities brought about by the successful preparation of sub-micrometer V2O5, VO2, and V2O3 are illustrated by the characterization of the electrochromic properties of V2O5 films, a discussion about the metal to insulator transition of VO2 on the basis of in situ measurements versus temperature of its electrical and optical properties, and the characterization of the magnetic transition of V2O3 powder from SQUID measurements. For the latter compound, the influence of the crystallite size on the magnetic properties is discussed.< Réduire

Mots clés en anglais

X- Polyol synthesis

Vanadium oxides

Magnetism

Thermochromism

Electrochromism

Metal-Insulator Transition (MIT)

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Low-Cost and Facile Synthesis of the Vanadium Oxides V2O3, VO2, and V2O5 and Their Magnetic, Thermochromic and Electrochromic Properties.

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