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High-efficient production of boron nitride nanosheets via an optimized ball milling process for lubrication in oil

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journal contribution
posted on 01.12.2014, 00:00 authored by Deepika, Luhua LiLuhua Li, Alexey Glushenkov, S K Hait, Peter HodgsonPeter Hodgson, Ying (Ian) ChenYing (Ian) Chen
Although tailored wet ball milling can be an efficient method to produce a large quantity of two-dimensional nanomaterials, such as boron nitride (BN) nanosheets, milling parameters including milling speed, ball-to-powder ratio, milling ball size and milling agent, are important for optimization of exfoliation efficiency and production yield. In this report, we systematically investigate the effects of different milling parameters on the production of BN nanosheets with benzyl benzoate being used as the milling agent. It is found that small balls of 0.1-0.2 mm in diameter are much more effective in exfoliating BN particles to BN nanosheets. Under the optimum condition, the production yield can be as high as 13.8% and the BN nanosheets are 0.5-1.5 μm in diameter and a few nanometers thick and of relative high crystallinity and chemical purity. The lubrication properties of the BN nanosheets in base oil have also been studied. The tribological tests show that the BN nanosheets can greatly reduce the friction coefficient and wear scar diameter of the base oil.

History

Journal

Scientific reports

Volume

4

Article number

7288

Pagination

1 - 6

Publisher

Nature Publishing Group

Location

London, Eng.

eISSN

2045-2322

Language

eng

Publication classification

C Journal article; C1 Refereed article in a scholarly journal

Copyright notice

2014, Nature Publishing Group