Scalable Exfoliation Process for Highly Soluble Boron Nitride Nanoplatelets by Hydroxide-Assisted Ball Milling

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The scalable preparation of two-dimensional hexagonal boron nitride (h-BN) is essential for practical applications. Despite intense research in this area, high-yield production of two-dimensional h-BN with large-size and high solubility remains a key challenge. In the present work, we propose a scalable exfoliation process for hydroxyl-functionalized BN nanoplatelets (OH-BNNPs) by a simple ball milling of BN powders in the presence of sodium hydroxide via the synergetic effect of chemical peeling and mechanical shear forces. The hydroxide-assisted ball milling process results in relatively large flakes with an average size of 1.5 mu m with little damage to the in-plane structure of the OH-BNNP and high yields of 18%. The resultant OH-BNNP samples can be redispersed in various solvents and form stable dispersions that can be used for multiple purposes. The incorporation of the BNNPs into the polyethylene matrix effectively enhanced the barrier properties of the polyethylene due to increased tortuosity of the diffusion path of the gas molecules. Hydroxide-assisted ball milling process can thus provide simple and efficient approaches to scalable preparation of large-size and highly soluble BNNPs. Moreover, this exfoliation process is not only easily scalable but also applicable to other layered materials
Publisher
AMER CHEMICAL SOC
Issue Date
2015-02
Language
English
Article Type
Article
Keywords

KeyWords Plus:2-DIMENSIONAL NANOSHEETS; MECHANICAL-PROPERTIES; POLYMERIC COMPOSITES; THIN-FILMS; GRAPHENE; NANOCOMPOSITES; NANORIBBONS; NANOTUBES; OXIDATION; COATINGS

Citation

NANO LETTERS, v.15, no.2, pp.1238 - 1244

ISSN
1530-6984
DOI
10.1021/nl504397h
URI
http://hdl.handle.net/10203/195730
Appears in Collection
NE-Journal Papers(저널논문)MS-Journal Papers(저널논문)
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