钨-氟共掺杂二氧化钒的水热法制备及表征  

Hydrothermal synthesis and characterization of tungsten and fluorine co-doped vanadium dioxide

作　　者：吕维忠[1,2] 黄德贞 罗仲宽[1,2] 刘波[1,2] 

机构地区：[1]深圳大学化学与化工学院,深圳518060 [2]深圳市新型锂离子电池与介孔材料重点实验室,深圳518060

出　　处：《深圳大学学报（理工版）》2015年第4期385-389,共5页Journal of Shenzhen University(Science and Engineering)

基　　金：国家国际科技合作专项资助项目(2013DFG52970);深圳市科技计划资助项目(JCYJ20140418193546109);深圳市南山区创新研发资助项目(KC2013JSCX0015A)~~

摘　　要：以五氧化二钒(V2O5)为原料,草酸为还原剂,通过水热法制备二氧化钒(VO2)纳米粉体,使用X射线衍射、扫描电子显微镜-能谱仪联用和差示扫描热量分析仪等对样品进行表征分析.研究发现,钨-氟的掺杂可降低VO2的相变温度,使其接近室温(低于25℃);控制不同的反应参数(如反应体系内液体体积)可以制得不同形貌的VO2粉体;当水热反应温度为190℃,水热反应时间为72 h,煅烧温度为800℃时,可得到晶型较完整的VO2粉体.Using V205 as raw material and oxalic acid as a reducing agent, we prepare vanadium dioxide nanopow- ders by hydrotherrnal method and characterize samples by X-ray diffraction （XRD）, scanning electron microscopy- electronic differential system （SEM-EDS）, and differential scanning calorimetry （DSC） analyzer. Results show that the phase transition temperature of the fluorine and tungsten co-doped vanadium dioxide can beclose to room temperature （below 25 ℃ ）. The reaction systems with different reaction parameters generate vanadium dioxide powders with different morphologies such as various volume of the reaction system. At the hydrothermal reaction temperature of 190 ~（2, the hydrothermal reaction time of 72 h, and the calcination temperature of 800 ℃, the more complete crystal ,~anadium dioxide powder can be obtained.

关 键 词：无机材料 五氧化二钒 二氧化钒粉体 水热法 相变温度 共掺杂 掺杂量 

分 类 号：O69[理学—化学]