周俏婷,吕维忠.溶胶-凝胶辅助水热法制备硼掺杂纳米VO2粉体[J].稀有金属材料与工程,2020,49(4):1325~1330.[Qiaoting Zhou,,Weizhong Lv.Synthesis of Boron-doped Monoclinic VO2 nanoparticles by sol-gel hydrothermal method[J].Rare Metal Materials and Engineering,2020,49(4):1325~1330.]
溶胶-凝胶辅助水热法制备硼掺杂纳米VO2粉体
投稿时间:2019-05-20  修订日期:2019-07-30
中文关键词:  二氧化钒  相变温度  硼掺杂
基金项目:
中文摘要:
      采用溶胶-凝胶辅助水热法制备了硼掺杂纳米二氧化钒(VO2)粉体,探究了双氧水(H2O2)浓度、水热时间、退火温度、不同硼掺杂剂、硼掺杂量等工艺参数对合成硼掺杂纳米VO2(M)粉体的影响,并采用X-射线衍射仪(XRD)、X-射线光电子能谱分析仪(XPS)、电感耦合等离子体光谱仪(ICP)、场发射扫描电镜(SEM)、差示扫描量热仪(DSC)对硼掺杂纳米VO2粉体的结构、形貌和相变特性进行了表征。结果表明:H2O2浓度为15%,水热时间为72 h,退火温度为600 ℃,硼掺杂剂为硼酸、硼掺杂量≤10%为较优合成工艺条件;所制备出的硼掺杂纳米VO2粉体尺寸约为100 nm,形貌呈珊瑚状;硼原子成功替代了VO2(M)晶格中的钒原子,当实际掺杂量为0.6 at.%时,相变温度降低7.2 ℃。
Synthesis of Boron-doped Monoclinic VO2 nanoparticles by sol-gel hydrothermal method
英文关键词:Vanadium dioxide  Phase transition temperature  Boron doping
英文摘要:
      Boron-doped vanadium dioxide (VO2) nanopowders were prepared by the sol-gel hydrothermal method. Effect of process parameters including the hydrogen peroxide (H2O2) concentration, hydrothermal time, annealing temperature, type of boron dopant and boron doping amount on the synthesis of boron-doped VO2 powders was investigated. The structure, morphology and phase transition properties of the boron-doped VO2 powders were characterized by the X-ray diffractometer (XRD), X-ray photoelectron spectroscopy (XPS), inductively coupled plasma (ICP), field emission scanning electron microscopy (SEM) and differential scanning calorimetry (DSC). The results show that the superior synthesis process parameters are 15% for the H2O2 concentration, 72 h for the hydrothermal time, 600 °C for the annealing temperature, boric acid as the boron dopant, and less than 10 at.% for the boron doping amount. The obtained boron-doped VO2 powders have the size of around 100 nm with the morphology of coral-like structure. The boron atoms successfully replace the vanadium atoms in the VO2(M) lattice. The phase transition temperature is reduced by 7.2 °C, when the actual doping amount is 0.6 at.%.
作者单位E-mail
周俏婷 深圳大学 weizhonglv@163.com 
吕维忠 深圳大学 weizhonglv@163.com 
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