Rapid Preparation of V2O3 and VN Nanocrystals by Ammonolysis of the Precursor VOC2O4•H2O
V2O3 and VN nanocrystals have been conveniently synthesized from thermal ammonolysis of the precursor VOC2O4•H2O in a resistance tubular furnace at 500°С and 780°С for 30 min, respectively. The products were characterized by X-ray diffractometer (XRD)、X-ray photoelectron spectroscopy (XPS) and transmission electron microscopy (TEM) techniques. The average particle sizes of V2O3 and VN are both in the ranges of 20~35 nm. The evolution from precursor to hexagonal V2O3 and then to cubic VN was explored. The crucial factors，such as the reaction temperature and time，have also been discussed.
Jianmin Zeng, Taosen Li, Shaojian Ma, Zhengyi Jiang and Daoguo Yang
H. Lin et al., "Rapid Preparation of V2O3 and VN Nanocrystals by Ammonolysis of the Precursor VOC2O4•H2O", Advanced Materials Research, Vols. 194-196, pp. 660-664, 2011