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Alternative TitlePreparation of VO_2 Superfine Powders by a Redox Method and In Situ Characterization on the Reversible Phase Transition
张少鸿; 付娟; 苏秋成; 付春红; 李新军
Source Publication稀有金属材料与工程
AbstractOxalic acid was chosen as the reductant to prepare superfine VO2 powders from V2O5 under high-purity N2 atmosphere. The effect of V2O5:H2C2O4 molar ratio on the VO2 purity was investigated. X-ray diffraction(XRD), scanning electron microscopy(SEM) and ene
Other Abstract采用氧化还原法,在N2保护气氛中,通过程序控温,用草酸还原V2O5制备VO2超细粉末,重点考察原料配比对还原产物物相纯度的影响。采用X射线衍射仪(XRD)和扫描电子显微镜(SEM)及X射线能量色散谱仪(EDS)分析产物的相组成和微观形貌,通过同步热分析(STA)和原位XRD研究VO2粉体的热致可逆相变特性。结果表明:V2O5和草酸以1:1.2~1.4的摩尔比混合,可制得较纯的单斜晶系VO2超细粉末,颗粒呈近球形,平均晶粒度约为50 nm。低温为M相(单斜晶系,P21/c),升温时可转化为R相(正方晶系,P
Keyword二氧化钒 氧化还原 热致相变 X射线衍射 同步热分析 热滞回线
Funding Organization国家自然科学基金(51172233); 广州地区分析测试基金(201212)
Document Type期刊论文
First Author AffilicationGuangZhou Institute of Energy Conversion,Chinese Academy of Sciences
Recommended Citation
GB/T 7714
张少鸿,付娟,苏秋成,等. 超细VO2粉末的制备及其可逆相变的原位表征[J]. 稀有金属材料与工程,2015(3):738-742.
APA 张少鸿,付娟,苏秋成,付春红,&李新军.(2015).超细VO2粉末的制备及其可逆相变的原位表征.稀有金属材料与工程(3),738-742.
MLA 张少鸿,et al."超细VO2粉末的制备及其可逆相变的原位表征".稀有金属材料与工程 .3(2015):738-742.
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