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严仙荣,李晓杰.,王小红,闫鸿浩.纳米金刚石硼掺杂的制备及表征[J].稀有金属材料与工程(英文),2018,47(12):3634~3639.[YanXianrong,LiXiaojie,WangXiaohong and YanHonghao.Preparation and Characterization of Boron-Doped Nano Diamond[J].Rare Metal Materials and Engineering,2018,47(12):3634~3639.]
Preparation and Characterization of Boron-Doped Nano Diamond
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Received:May 24, 2017  Revised:September 14, 2017
Key words: boron-doped diamond  oxidationSresistance  thermal stability  CVD
Foundation item:国家自然科学基金项目(面上项目,重点项目,重大项目)
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YanXianrong,LiXiaojie,WangXiaohong and YanHonghao  
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      In this paper, boron-doped nanodiamond was prepared by high temperature vacuum diffusion methodat in a vacuum container. Thermogravimetric analyzer(TGA), X ray photoelectron spectroscopy(XPS), X ray diffraction(XRD), Fourier transform infrared spectroscopy(FTIR), Raman spectroscopy, transmission electron microscope (TEM)were used for characterization of the prepared work. The results show that the products mainly contain C, O and B, and the mass fraction is 92.08%, 7.14%, 0.78%. In addition to diamond (111) D and (220) D diffraction peaks, there is also hexagonal diamond (1 0 0)D diffraction peaks in XRD picture of boron-doped product. The introduction of B atoms results in an increase in the defects of nanodiamond, causing the G peak to move to 1620cm-1. Boron atoms mainly exist in two forms of substitutional carbon atoms (C-B) bonds and bonds with the impurity elements (B-O) in the diamond lattice. The shape and morphology of boron-doped nano diamond particles have no obvious change. The particle size is 2~ 10nm and a small amount of cubic diamond exist. In conclusion, the initial oxidation temperature of boron-doped nano diamond increases by 175℃, the oxidation rate is slow and the thermal stability is improved.