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Formation of V_2O_3 nanocrystals by thermal reduction of V_2O_5 thin films

机译:通过热还原V_2O_5薄膜形成V_2O_3纳米晶体

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We report the formation of homogeneous and stable V_2O_3 nanocrystals, directly from V_2O_5 thin films, at 600℃, as observed by using in situ electron microscopy experiments. Thermally-induced reduction of V_2O_5 thin films in vacuum is remarkably different when compared to reduction of V_2O_5 single crystals and results in the formation of nanophase V_2O_3. Thermally grown V_2O_3 nanocrystals exhibit hexagon or square shape and are stable at higher temperature as well as room temperature. The formation of stable nanocrystals through the reduction process in a non-chemical environment (vacuum) could provide a basis for understanding the complex processes of vanadium oxide phase transitions and for controlling the chemical processes to produce oxide nanocrystals.
机译:通过使用原位电子显微镜实验观察到,我们报道了在600℃直接从V_2O_5薄膜形成均匀且稳定的V_2O_3纳米晶体。与还原V_2O_5单晶相比,真空中热诱导的V_2O_5薄膜的还原显着不同,并导致形成纳米相V_2O_3。热生长的V_2O_3纳米晶体呈现六边形或正方形形状,并且在高温和室温下均稳定。通过在非化学环境(真空)中的还原过程形成稳定的纳米晶体,可以为理解钒氧化物相变的复杂过程以及控制化学过程以生产氧化物纳米晶体提供基础。

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