Synthesis of Boron-Doped Monoclinic VO2 Nanoparticles by Sol-Gel Hydrothermal Method

被引：0
|
作者：
Zhou, Qiaoting [1 ]
Zhou, Tianzi [1 ]
Huang, Chunbo [1 ]
Li, Liangpu [1 ]
Hua, Yue [1 ]
Lv, Weizhong [1 ]
机构：
[1] Shenzhen University, College of Chemistry and Environmental Engineering, Shenzhen,518060, China
来源：
Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering | 2020年 / 49卷 / 04期
关键词：
Boron-doped vanadium dioxide (VO2) nanopowders were prepared by sol-gel hydrothermal method. The 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℃ 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℃; when the actual doping amount is 0.6 at%. © 2020; Science Press. All right reserved;
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页码：1325 / 1330
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