Journal of Advanced Ceramics

, Volume 8, Issue 1, pp 72–78 | Cite as

Crystalline boron nitride nanosheets by sonication-assisted hydrothermal exfoliation

  • Zhaobo Tian
  • Kexin ChenEmail author
  • Siyuan Sun
  • Jie Zhang
  • Wei Cui
  • Zhipeng Xie
  • Guanghua LiuEmail author
Open Access
Research Article


A simple method to prepare two-dimensional hexagonal boron nitride (h-BN) scalably is essential for practical applications. Despite intense research in this area, high-yield production of two-dimensional h-BN with large size and high crystallinity is still a key challenge. In the present work, we propose a simple exfoliation process for boron nitride nanosheets (BNNSs) with high crystallinity by sonication-assisted hydrothermal method, via the synergistic effect of the high pressure, and cavitation of the sonication. Compared with the method only by sonication, the sonication-assisted hydrothermal method can get the fewer-layer BNNSs with high crystallinity. Meanwhile, it can reach higher yield of nearly 1.68%, as the hydrothermal method with the yield of only 0.12%. The simple sonication-assisted hydrothermal method has potential applications in exfoliating other layered materials, thus opening new ways to produce other layered materials in high yield and high crystallinity.


boron nitride nanosheet (BNNS) high crystallinity sonication-assisted hydrothermal method 


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Authors and Affiliations

  1. 1.State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and EngineeringTsinghua UniversityBeijingChina

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