氮化硼
六方氮化硼
硼烷
化学工程
硼
X射线光电子能谱
拉曼光谱
氮化物
作者
Sung Kwan Kim,Hyunjin Cho,Myung Jong Kim,Hee Jun Lee,Jin Hyung Park,Young Boo Lee,Hwan Chul Kim,Chang Won Yoon,Suk Woo Nam,Sang Ook Kang
摘要
Nickel nanoparticles (NiNPs) prepared in tetraglyme (TG) efficiently catalyzed the conversion of ammonia borane (AB, NH3BH3) to borazine (B3N3H6). Under the optimized conditions, 3 mol% of the NiNPs were introduced into a 1.5 M AB solution in TG and held at 80 °C for 6 h under a dynamic vacuum that was maintained at 30 torr. Borazine was isolated through a series of −45 °C, −78 °C, and −196 °C traps to give (−78 °C trap) pure borazine in 53% yield. The borazine produced was then utilized as a molecular precursor for high quality h-BN (white graphene) and large area h-BN sheets were prepared by applying low pressure chemical vapor deposition (LPCVD). Ultra-thin (single to few layers) h-BN was synthesized on Ni foil at the optimal ratio between borazine and NH3, and the number of layers was tuned by varying the NH3 partial pressure.
科研通智能强力驱动
Strongly Powered by AbleSci AI