There was great interest in the exfoliation of hexagonal boron nitride to prepare functionalized boron nitride nanosheets (f-BNNSs) directly with high efficiency and ecofriendliness. In this study, a novel method has been demonstrated for the fabrication of two types of f-BNNSs by high-gravity liquid phase exfoliation technology. First, hydroxylated boron nitride nanosheets (OH-BNNSs) were prepared by high-gravity liquid phase exfoliation technology assisted by polyvinyl alcohol as a surfactant. The yield of OH-BNNSs was 1.4%. The average size of OH-BNNSs is approximately 390 nm, and the number of layers is approximately 7−8 layers. Second, The 4−5 layers of aminated and hydroxylated boron nitride nanosheets (NH₂-OH-BNNSs) with an average size of approximately 136 nm were obtained by combining ammonium bicarbonate-assisted ball-milling pretreatment and high-gravity liquid phase exfoliation technology. The yield of NH₂-OH-BNNSs was 8.5%. Both types of f-BNNSs can be stably dispersed in water. The similarities and differences in morphology and structure between them were confirmed by characterizations. Both preparation processes do not involve hazardous chemicals and harsh reaction conditions. Therefore, this work provides good ideas for simple and efficient preparation of f-BNNSs, which is conducive to their selective applications according to their characteristics.

六方氮化硼的剥离以直接高效和生态友好地制备功能化氮化硼纳米片（f-BNNSs）引起了极大的兴趣。在这项研究中，已经证明了一种通过高重力液相剥离技术制造两种类型的 f-BNNS 的新方法。首先，通过聚乙烯醇作为表面活性剂辅助的高重力液相剥离技术制备羟基化氮化硼纳米片（OH-BNNSs）。OH-BNNS 的产率为 1.4%。OH-BNNSs 的平均尺寸约为 390 nm，层数约为 7-8 层。二、4-5层胺化和羟基化氮化硼纳米片（NH ₂-OH-BNNSs) 是通过结合碳酸氢铵辅助球磨预处理和高重力液相剥离技术获得的，平均尺寸约为 136 nm。NH ₂ -OH-BNNS的产率为8.5%。两种类型的 f-BNNS 都可以稳定地分散在水中。通过表征证实了它们之间在形态和结构上的异同。两种制备过程均不涉及危险化学品和苛刻的反应条件。因此，这项工作为简单高效地制备f-BNNSs提供了很好的思路，有利于根据其特性进行选择性应用。