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[资源]
Nature Materisls:“豆浆机”法大规模制备无缺陷石墨烯——Coleman课题组出品
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2014年4月Nature Materials 发表了一篇制备石墨烯制备的文章,单单是一百多页的supporting information就足够秒杀一切了,我将其称之为用“”豆浆机“”大规模液相剥离石墨烯,当然,文章中的官方语言是用机械剪切力剥离石墨烯,尺寸大、无缺陷,最最重要的是可以实现大规模工业化生产,可以说是将石墨烯的制备再一次推向了高潮。网址:http://www.nature.com/nmat/journ ... utm_campaign=buffer To progress from the laboratory to commercial applications, it will be necessary to develop industrially scalable methods to produce large quantities of defect-free graphene. Here we show that high-shear mixing of graphite in suitable stabilizing liquids results in large-scale exfoliation to give dispersions of graphene nanosheets. X-ray photoelectron spectroscopy and Raman spectroscopy show the exfoliated flakes to be unoxidized and free of basal-plane defects. We have developed a simple model that shows exfoliation to occur once the local shear rate exceeds 104s-1. By fully characterizing the scaling behaviour of the graphene production rate, we show that exfoliation can be achieved in liquid volumes from hundreds of millilitres up to hundreds of litres and beyond. The graphene produced by this method performs well in applications from composites to conductive coatings. This method can be applied to exfoliate BN, MoS2 and a range of other layered crystals. QQ截图20140514085326.png |
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