Rapid Hydrothermal Synthesis of VO2 (B) and Its Conversion to Thermochromic VO2 (M1)
Author(s) -
Srinivasa R. Popuri,
M. Miclau,
Alla Artemenko,
Christine Labrugère,
Antoine Villesuzanne,
M. Pollet
Publication year - 2013
Publication title -
inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 233
eISSN - 1520-510X
pISSN - 0020-1669
DOI - 10.1021/ic301201k
Subject(s) - chemistry , hydrothermal circulation , annealing (glass) , hydrothermal synthesis , scanning electron microscope , vanadium , powder diffraction , infrared spectroscopy , aqueous solution , fourier transform infrared spectroscopy , citric acid , diffraction , analytical chemistry (journal) , crystallography , inorganic chemistry , chemical engineering , organic chemistry , optics , materials science , physics , engineering , composite material
The present study provides a rapid way to obtain VO2 (B) under economical and environmentally friendly conditions. VO2 (B) is one of the well-known polymorphs of vanadium dioxide and is a promising cathode material for aqueous lithium ion batteries. VO2 (B) was successfully synthesized by rapid single-step hydrothermal process using V2O5 and citric acid as precursors. The present study shows that phase-pure VO2 (B) polytype can be easily obtained at 180 °C for 2 h and 220 °C for 1 h, that is, the lowest combination of temperature and duration reported so far. The obtained VO2 (B) is characterized by X-ray powder diffraction, high-resolution scanning electron microscopy, and Fourier transform infrared spectroscopy. In addition, we present an indirect way to obtain VO2 (M1) by annealing VO2 (B) under vacuum for 1 h.
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