Scalable Exfoliation and High‐Efficiency Separation Membrane of Boron Nitride Nanosheets,ChemistrySelect

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Scalable Exfoliation and High‐Efficiency Separation Membrane of Boron Nitride Nanosheets
ChemistrySelect ( IF 1.9 ) Pub Date : 2020-03-25 , DOI: 10.1002/slct.202000622
Zhen Wang _{1,

2} , Yanjiao Zhu _{1,

2} , Dong Ji ₂ , Zhifeng Li ₁ , Haibin Yu ₂

Affiliation

Hexagonal boron nitride nanosheets (h‐BNNSs) refer to a class of two‐dimensional materials with promising applications. However, the current method of exfoliating hexagonal boron nitride (h‐BN) into h‐BNNS limits its large‐scale application. Herein, a method was developed to exfoliate h‐BN through sucrose assisted discontinuous, multiple ball milling. A series of defect‐free, ultra‐thin large lateral‐size h‐BNNSs were successfully obtained, with a yield as high as 85 wt %. Finally, the membranes of BNNS obtained by vacuum filtration displayed a good separation performance in different organic pigment solutions. The separation rates of BNNS‐20 membranes for methylene blue and Congo red reached 87 % and 95 %, respectively. The results show that the functionalized h‐BNNSs obtained by sucrose‐assisted discontinuation, multiple ball milling have good stability in water, and hence can be applied to wastewater treatment.

中文翻译：

氮化硼纳米片的可扩展剥落和高效分离膜

六方氮化硼纳米片（h-BNNS）是指一类具有广阔应用前景的二维材料。但是，当前将六方氮化硼（h-BN）剥落为h-BNNS的方法限制了其大规模应用。在本文中，开发了一种通过蔗糖辅助的不连续多次球磨剥落h-BN的方法。成功获得了一系列无缺陷，超薄的大尺寸横向h-BNNS，产率高达85 wt％。最后，通过真空过滤获得的BNNS膜在不同的有机颜料溶液中显示出良好的分离性能。BNNS-20膜对亚甲蓝和刚果红的分离率分别达到87％和95％。结果表明，通过蔗糖辅助终止获得的功能化h-BNNS，

更新日期：2020-03-26

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