One-step hydrothermal synthesis and characterization of Mg/Mo co-doped VO2 nanorods

Abstract

This paper reports the successful syntheses of Mg/Mo co-doped thermochromic vanadium dioxide nanorods by hydrothermal technique. In particular, the effect of magnesium and molybdenum co-doping on insulator–metal transition of vanadium dioxide was investigated. The synthesized Mg/Mo co-doped VO2 nanorods exhibited high purity and crystallinity. X-ray diffraction, scanning electron microscopy, X-ray energy-dispersive spectrometer, transmission electron microscopy, and Fourier transform (FTIR) were used to study the structure and morphology of the as-synthesized rods. X-ray diffraction patterns of the samples show an increase in intensity and a slight shift in the peaks toward lower 2-theta with increasing dopant concentration. The co-doping reduces ΔTc and has been considered as an effective method for manipulating the phase change in VO2. The results revealed that smart radiation devices based on Mg/Mo co-doping of VO2 can be a promising material for thermal control of spacecraft.