水热反应温度对VO2(B)纳米形貌的影响
he Eeffect of Hydrothermal Reaction Temperature on the Morphology of VO2(B) Nanopowder
本研究在水热条件下，以草酸和V2O5为原料，在180℃至240℃范围内，成功地制备出了VO2(B)纳米粉体；并利用XRD、SEM、BET等手段对产物VO2(B)进行了表征。结果表明：利用此方法制备出了具有棒状的VO2（B）纳米粉体, 长为300-700nm，宽为10-20nm；根据XRD谱图，采用Scherer公式计算粉体纳米尺寸，发现随着合成温度的升高，VO2（B）纳米颗粒尺寸呈下降趋势；BET分析表明，随着合成温度的升高，比表面积减小，说明团聚加剧。
In this paper, oxalic acid and V2O5 were used as raw materials under the hydrothermal conditions. In the temperature range from 180℃ to 240℃, the VO2 (B) nano-powder were prepared successfully. The means of XRD, SEM and BET were used to observe the structure, morphology and specific surface area of the prepared VO2(B) nano-powder. The results show that the prepared VO2 (B) nano-powders are with the rod-like structure, the length of 300-700nm and the width of 10-20nm. According to the XRD pattern and the result calculated from the formula of Scherer, the size of the nano-particles is decreasing along with the increase of the hydrothermal reaction temperature. As the result of BET shown, specific surface area of the product is decreasing along with the increase of the temperature. That indicates the intensification of agglomeration with increasing temperature.
张家政、牛晨、齐济、吴楠楠、李瑞静
材料科学化学晶体学
VO2(B)草酸比表面积结构和形貌
VO2 (B)oxalic acidspecific surface areastructure and morphology
张家政,牛晨,齐济,吴楠楠,李瑞静.水热反应温度对VO2(B)纳米形貌的影响[EB/OL].(2012-06-01)[2025-08-23].http://www.paper.edu.cn/releasepaper/content/201206-17.点此复制
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