Hydrogen in mechanically prepared nanostructured h-BN: a critical comparison with that in nanostructured graphite
Hydrogen in mechanically prepared nanostructured h-BN: a critical comparison with that in nanostructured graphite
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DOI：
10.1063/1.1432447
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发表时间：
2002-01
影响因子：
4
通讯作者：
Ping Wang;S. Orimo;T. Matsushima;H. Fujii;G. Majer
中科院分区：
文献类型：
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作者：
Ping Wang;S. Orimo;T. Matsushima;H. Fujii;G. Majer
采用机械铣削法制备了h-BN纳米结构。经过80 h的磨矿处理后，氢浓度达到2.6质量%，这一数值相当于先前报道的纳米结构石墨的35%左右。除了在570 K左右开始的氢解吸外，在700 K左右也检测到氮的解吸。至少在1173 K以下没有再结晶现象。纳米结构h-BN与石墨在脱氢化性能上的差异可能是由于特定缺陷附近的局部电子结构不同所致。
Nanostructured h-BN was prepared by mechanical milling under hydrogen atmosphere. The hydrogen concentration reaches up to 2.6 mass% after milling for 80 h, and this value corresponds to ca. 35% of that of nanostructured graphite as was previously reported. In addition to the hydrogen desorption starting at about 570 K, nitrogen desorption was also detected at about 700 K. There was no recrystallization phenomenon at least below 1173 K. The dissimilarities on the (de-)hydriding properties between nanostructured h-BN and graphite might be due to the different local electronic structure near the specific defects.