biostudies-literatureXu HYNatural Science Foundation of Shaanxi ProvinceNational Natural Science Foundation of China10064-10071https://www.ebi.ac.uk/biostudies/studies/S-EPMC9078730biostudies-literatureUnknown8(18)Monoclinic vanadium dioxide VO<sub>2</sub> (M) with hexagonal structure is synthesized by hydrothermal method, and the phase evolution is evidenced. Interestingly, the hexagonal morphology comes into being as a result of the low-energy coherent interfaces, (211̄)<sub>1</sub>//(21̄1̄)<sub>2</sub> and (21̄1̄)<sub>1</sub>//(020)<sub>2</sub>. The size of hexagonal particles is well controlled by changing the concentration of precursor solutions. Hexagonal particles exhibit excellent thermochromic properties with a narrow hysteresis of 5.9 °C and high stability. In addition, the phase transition temperature can be substantially reduced down to 28 °C by simply W doping.RSC advancesHexagonal VO<sub>2</sub> particles: synthesis, mechanism and thermochromic properties.PMC907873051771144514711302017JZ015Xu KWChu PKXu HYMa FfalseHexagonal VO<sub>2</sub> particles: synthesis, mechanism and thermochromic properties.Monoclinic vanadium dioxide VO<sub>2</sub> (M) with hexagonal structure is synthesized by hydrothermal method, and the phase evolution is evidenced. Interestingly, the hexagonal morphology comes into being as a result of the low-energy coherent interfaces, (211̄)<sub>1</sub>//(21̄1̄)<sub>2</sub> and (21̄1̄)<sub>1</sub>//(020)<sub>2</sub>. The size of hexagonal particles is well controlled by changing the concentration of precursor solutions. Hexagonal particles exhibit excellent thermochromic properties with a narrow hysteresis of 5.9 °C and high stability. In addition, the phase transition temperature can be substantially reduced down to 28 °C by simply W doping.2018-01-01T00:00:00Z2018 Mar2025-04-04T20:50:32.826Z2025-02-19T03:25:20.711ZS-EPMC90787303554086110.1039/c8ra00716k