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Ion-induced coagulation of hexagonal boron nitride nanosheets in aqueous environment
Colloid and Interface Science Communications ( IF 4.7 ) Pub Date : 2021-08-03 , DOI: 10.1016/j.colcom.2021.100475
Xiaobin Zhu 1, 2 , Liang Zhang 1 , Bin Zuo 1 , Zhengcun Zhou 1 , Yifei Yang 1 , Jinlei Zhang 3 , Shuyi Wu 3
Affiliation  

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.



中文翻译:

六方氮化硼纳米片在水环境中的离子诱导凝聚

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。

更新日期:2021-08-03
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