Li Dengbing, Li Ming, Pan Jing, Luo Yuanyuan, Wu Hao, Zhang Yunxia, Li Guanghai
Key Laboratory of Materials Physics, Anhui Key Laboratory of Nanomaterials and Nanotechnology, Institute of Solid State Physics, Chinese Academy of Sciences , Hefei 230031, P. R. China.
ACS Appl Mater Interfaces. 2014 May 14;6(9):6555-61. doi: 10.1021/am500135d. Epub 2014 Apr 25.
This paper reports a one-step TiO2 seed-assistant hydrothermal synthesis of Mo-doped VO2(M)/TiO2 composite nanocrystals. It was found that excess Mo doping can promote formation of the VO2(M) phase, and rutile TiO2 seed is beneficial to morphology control, size reduction, and infrared modulation of Mo-doped VO2(M) nanocrystals. The Mo-doped VO2 nanocrystals epitaxially grow on TiO2 seeds and have a quasi-spherical shape with size down to 20 nm and a nearly 35% infrared modulation near room temperature. The findings of this work demonstrate important progress in the near-room-temperature thermochromic performance of VO2(M) nanomaterials, which will find potential application in constructing VO2(M) nanocrystal-based smart window coatings.
本文报道了一种一步法TiO₂籽晶辅助水热合成Mo掺杂VO₂(M)/TiO₂复合纳米晶体的方法。研究发现，过量的Mo掺杂可促进VO₂(M)相的形成，而金红石TiO₂籽晶有利于Mo掺杂VO₂(M)纳米晶体的形貌控制、尺寸减小和红外调制。Mo掺杂VO₂纳米晶体在TiO₂籽晶上外延生长，呈准球形，尺寸可达20 nm，在室温附近具有近35%的红外调制率。这项工作的研究结果表明VO₂(M)纳米材料在近室温热致变色性能方面取得了重要进展，这将在构建基于VO₂(M)纳米晶体的智能窗涂层方面具有潜在应用。
