Two-step synthesis of VO2(M) tuned crystallinity

Shian Guan (1) , Aline Rougier (1) , Oudomsack Viraphong (1) , Dominique Denux (1) , Nicolas Penin (1) , Manuel Gaudon (1)

1 ICMCB - Institut de Chimie de la Matière Condensée de Bordeaux

Vanadium dioxide is the key thermochromic compound for the next generation of smart windows. Monoclinic vanadium dioxide with tuned crystallinity is synthesized by a two-step thermal treatment: thermolysis of vanadyl ethylene glycolate and postannealing of the poorly crystallized VO2 powder. The proportion of crystallized VO2, calculated with the Fullprof program, increases from 44% to 79% and 100% with increasing annealing temperature up to 700 °C. Besides, V2O3 and V2O5 with particular microstructures are also successfully prepared using this method.

Domaines: Matériaux

Shian Guan, Aline Rougier, Oudomsack Viraphong, Dominique Denux, Nicolas Penin, et al.. Two-step synthesis of VO2(M) tuned crystallinity. Inorganic Chemistry, 2018, 57 (15), pp.8857-8865. ⟨10.1021/acs.inorgchem.8b00753⟩. ⟨hal-01871116⟩