Abstract The Boron Nitride Materials Research Center of Hebei University of Technology has made breakthroughs in the research of cubic boron nitride synthesis. The recently completed research results of the center "photochemical synthesis of ultra-fine cubic boron nitride nanoparticles under normal temperature and pressure" have recently been international...The Boron Nitride Materials Research Center of Hebei University of Technology has made breakthroughs in the research of cubic boron nitride synthesis. The recently completed research results of the center "photochemical synthesis of ultra-fine cubic boron nitride nanoparticles under normal temperature and pressure" were recently published in the internationally renowned journal "Angewandte Chemie" (published in Germany) (published online, DOI: 10.1002/anie.201502023R1) ). â€œAngewandte Chemieâ€ is the leading journal of internationally recognized chemistry. Due to the importance of the research content and the hot topics involved, the paper was highly valued by Angew editors and was selected as hot paper.
Cubic boron nitride, which exhibits a diamond structure, is a key tool material for advanced fine machining, especially in the steel material processing industry. The synthesis of cubic boron nitride usually requires extremely high temperature and pressure. It is difficult to obtain small-sized boron nitride nanoparticles by synthesizing cubic boron nitride. The research team used laser irradiation liquid target with ammonia borane as precursor. The rapid synthesis of ultra-fine cubic boron nitride nanoparticles in one step overcomes this difficulty. More importantly, this work demonstrates for the first time that the grain size can control the crystal structure in the field of boron nitride: the grain size is larger than 20 nm and exhibits a super soft hexagonal structure with a scale of less than 5 nm. Boron exhibits a superhard cubic structure, a result of which is a major breakthrough in cubic boron nitride synthesis.
The Boron Nitride Materials Center has been working on the basic theory and experimental research of green synthesis, performance exploration and application development of new boron nitride based materials. The research involves boron nitride-based thermal conductive insulating polymer, micro-nano structure boron nitride, new adsorbent materials, new non-rare earth luminescent materials, cubic boron nitride materials, and absorbing materials.
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