| 초록 |
When vanadium dioxide (VO2) is synthesized with tungsten, it is effective way to reduce the metal-insulator phase transition (MIT) of VO2 at around 68°C to room temperature. The resulting of it makes WxVO2 as an ideal substance for thermochromic window materials by reflecting near‒infrared light at room temperature while transmitting visible light. Another issue of VO2 is to reduce each particle size. For using VO2 to thermochromic windows, nanoparticles of VO2 are greatly required to decrease the haze effect by light scattering and to present prompt phase transition under environmental temperature variation. In this study, we synthesize VO2 nanoparticles with vanadium pentoxide (V2O5), oxalic acid (OA) and polyacrylic acid (PAA). We select PAA because it mingles with OA and can be a steric-hindering agent in the reaction medium, resulting in the synthesis of nanomaterials. We investigated the influence of PAA on the morphology and crystal structure of tungsten-doped vanadium oxides. |
