N,N-Dimethyl formamide facilitated formation of hexagonal boron nitride from boric acid |
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| Affiliation: | 1. Department of Materials Science and Engineering, Rutgers, The State University of New Jersey, Piscataway, NJ 08854, USA;2. Department of Mechanical Engineering, Johns Hopkins University, Baltimore, MD 21218, USA;3. H&M Analytic Services Inc., Cream Ridge, NJ 08514, USA;1. MOE Key Laboratory of Pollution Processes and Environmental Criteria, Tianjin Engineering Centre for Cleaner Technology of Iron-steel Industry, College of Environmental Science and Engineering, Nankai University, 38 Tongyan Road, Jinnan District, Tianjin 300350, China;2. National Postdoctoral Research Station, Haitian Water Group Co., Ltd, Chengdu 610041, China |
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| Abstract: | 
In this paper, we report on a promoting novel process for the formation of h-BN plates by using N,N-dimethyl formamide-treated boric acid (DMF-BA). Using this B source, the formation of h-BN can be indeed improved greatly compared to using pure boric acid (BA). This method effectively reduces the content of boric acid and amorphous boric oxide, enhancing the transformation rate of h-BN. For preparation of pure h-BN, it can obviously lower the resultant temperature without further purification process. Via graphitization index (G.I.) calculation and thermostability analysis, the pure h-BN plates obtained from the DMF-BA would be a promising candidate for raw material of c-BN and low-temperature applications in the air. |
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| Keywords: | DMF Boric acid Pure h-BN plates Transformation rate Graphitization index |
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