Simple and Facile Synthesis W-doped VO₂ (M) Powder Based on Hydrothermal Pathway

摘要

The present study provides a simple and facile pathway to obtain undoped and W-doped VO2 (M)powder by utilizing the inexpensive and low toxic NH4VO3 precursor with an economical andenvironmental friendly method. The XRD patterns exhibited that the W-doped VO2 powder wasmonoclinic phase, and W atom doping almost had no influence on the crystal structure of VO2 lattice.The grain size of W-doped VO2 particles decreased as W atom concentration increasing. SEM imagesshowed that particles with 1~2 microns diameter of W-doped VO2 (B) were obtained by hydrothermal synthesis directly. VO2 (B) transformed to VO2 (M) after annealed at 750 C in nitrogen atmosphere.