An ethylene glycol reduction approach to metastable VO2nanowire arrays

Metastable VO2 nanowire arrays, designated as VO2 (B), have been synthesized via an ethylene glycol reduction approach. The samples are characterized by XRD, TEM, HRTEM, SAED, and XPS. The as-prepared VO2 (B) nanowires have an average diameter of 6 nm and length of up to several micrometres and grow along the [010] direction. The experimental results reveal that the reaction temperature and ethylene glycol are of importance for obtaining pure VO2 (B) nanowire arrays.