Highly-dispersible boron nitride nanoparticles by spray drying and pyrolysis

作者：Han, Weifang; Ma, Zhiyan; Liu, Shicai; Ge, Chunhua^*; Wang, Lixia; Zhang, Xiangdong^*

来源：Ceramics International, 2017, 43(13): 10192-10200.

DOI：10.1016/j.ceramint.2017.05.045

• Spray drying
• Pyrolysis
• High dispersivity
• Boron nitride
• Antifriction

A spray drying and pyrolysis synthesis route was developed and it successfully prepared boron nitride (BN) nanoparticles with high dispersivity. During the experiment, the extremely rapid drying of the boric acid/urea solution during the spray-drying process resulted in the formation of homogeneous precursors, which was the key for the final pyrolysis synthesis of BN nanoparticles with high dispersibility and uniform diameters (similar to 20 nm). Compared with boron nitride synthesized without using spray drying, the as-prepared BN nanoparticles possess higher specific surface area (145.01 m(2) g(-1)) and larger pore volume (0.41 cm(3) g(-1)). Especially, we used the BN nanoparticles as lubricant and incorporated it into the liquid paraffin (LP). The experiment results show that the LP presents outstanding antifriction properties for a BN content of 1.5 wt%. These results suggest that the h-BN nanoparticles have significant potential applications in the field of tribology.

• 出版日期2017-9
• 单位辽宁大学