With the wide application of two-dimensional materials, the potential threat of two-dimensional materials to the environment has been paid more and more attention. In this work, several salts were used as the coagulants to remove hexagonal boron nitride (h-BN) nanosheets from water, and the effects of anions and cations on the coagulation were investigated. The experimental results showed that strong acid radical ions (such as Cl⁻ and SO₄²⁻) performs better among the anions, while copper and aluminum perform better among the cations. The maximum coagulation capacities of NaCl, Na₂SO₄, CuSO₄ and Al₂(SO₄)₃ were 1.13, 1.38, 12.5 and 5.75 g/g, respectively. The compression of electric double layer and charge neutralization are the main coagulation mechanisms of monovalent metal salts and divalent (trivalent) metal salts respectively.

随着二维材料的广泛应用，二维材料对环境的潜在威胁越来越受到重视。在这项工作中，使用几种盐作为凝结剂从水中去除六方氮化硼 (h-BN) 纳米片，并研究了阴离子和阳离子对凝结的影响。实验结果表明，强酸根离子（如Cl ^-和SO ₄ ^2-）在阴离子中表现更好，而铜和铝在阳离子中表现更好。NaCl、Na ₂ SO ₄、CuSO ₄和Al ₂ (SO ₄ ) ₃的最大混凝能力分别为 1.13、1.38、12.5 和 5.75 g/g。双电层的压缩和电荷中和分别是一价金属盐和二价（三价）金属盐的主要凝结机制。