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Hydrothermal Synthesis of Mo-Doped VO 2 /TiO 2 Composite Nanocrystals with Enhanced Thermochromic Performance

2014; American Chemical Society; Volume: 6; Issue: 9 Linguagem: Inglês

10.1021/am500135d

1944-8252

Deng‐Bing Li, Ming Li, Jing Pan, Yuanyuan Luo, Hao Wu, Yunxia Zhang, Guanghai Li,

TiO2 Photocatalysis and Solar Cells

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.