Highly efficient preparation of hexagonal boron nitride by direct microwave heating for dye removal

  • Tiantian Shen
  • Song Liu
  • Wenjun Yan
  • Jigang WangEmail author


Within 40 min, hexagonal boron nitride (h-BN) was rapidly synthesized via microwave heating without using catalyst and protective gas. Melamine and boric acid were used as raw materials, and carbon fiber was utilized as microwave absorber, respectively. X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), Fourier transform infrared (FTIR) spectroscopy and scanning electron microscope (SEM) were used to characterize the structures and morphologies of the samples. Results indicated that the whisker-like h-BN with diameters of 200–500 nm and lengths of 15–25 μm were successfully obtained. The specific surface area of the product was 510.941 m2 g−1. The maximum adsorption capacity for methylene blue solution of the as-obtained h-BN was high up to ~ 230 mg g−1 at room temperature. The excellent adsorption performance of the samples may be attributed to the oxygen-containing functional groups and defects formed during the high-energy microwave irradiation.



This work is supported by Program for New Century Excellent Talents in University, China (NECT-12-0119), the Key Project and Youth Project of Science and Technology of Tibet Autonomous Region, China (XZ2017ZRG-66(Z), XZ2017ZRG-49(Z)), and the Fundamental Research Funds for the Central Universities.


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Authors and Affiliations

  1. 1.Jiangsu Key Laboratory of Advanced Metallic Materials, School of Materials Science and EngineeringSoutheast UniversityNanjingPeople’s Republic of China
  2. 2.Analytical Instrumentation Center, Institute of Coal ChemistryChinese Academy of SciencesTaiyuanPeople’s Republic of China
  3. 3.Xizang Engineering Laboratory for Water Pollution Control and Ecological RemediationXizang Minzu UniversityXianyangPeople’s Republic of China

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