Kim, Sung-Kwan Cho, Hyunjin Kim, Myung Jong Lee, Hee-Jun Park, Jin-hyung Lee, Young-Boo Kim, Hwan Chul Yoon, Chang Won Nam, Suk Woo Kang, Sang Ook 2024-01-20T13:02:46Z 2024-01-20T13:02:46Z 2021-09-01 2013-02 2050-7488 https://pubs.kist.re.kr/handle/201004/128409 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 degrees C for 6 h under a dynamic vacuum that was maintained at 30 torr. Borazine was isolated through a series of -45 degrees C, -78 degrees C, and -196 degrees C traps to give (-78 degrees 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. English ROYAL SOC CHEMISTRY NICKEL ACETATE TETRAHYDRATE THERMAL-DECOMPOSITION HYDROGEN STORAGE DEHYDROGENATION DIFFRACTION COMPOSITES BEHAVIOR NMR Efficient catalytic conversion of ammonia borane to borazine and its use for hexagonal boron nitride (white graphene) Article 10.1039/c2ta00758d 1 JOURNAL OF MATERIALS CHEMISTRY A, v.1, no.6, pp.1976 - 1981 JOURNAL OF MATERIALS CHEMISTRY A 1 6 1976 1981 scie scopus 000314642700007 2-s2.0-84876521310 Chemistry, Physical Energy & Fuels Materials Science, Multidisciplinary Chemistry Energy & Fuels Materials Science Article NICKEL ACETATE TETRAHYDRATE THERMAL-DECOMPOSITION HYDROGEN STORAGE DEHYDROGENATION DIFFRACTION COMPOSITES BEHAVIOR NMR Boron Nitride White Graphene Borazine Ammonia Borane CVD