Easy synthesis of highly nitrogen-enriched graphitic carbon with a high hydrogen storage capacity at room temperature
Easy synthesis of highly nitrogen-enriched graphitic carbon with a high hydrogen storage capacity at room temperature
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DOI：
10.1016/j.carbon.2009.02.010
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发表时间：
2009-05-01
期刊：
影响因子：
10.9
通讯作者：
Park, Chong Rae
中科院分区：
文献类型：
--
作者：
Yang, Seung Jae;Cho, Jung Hyun;Park, Chong Rae
开发了一种简单的合成高富氮石墨碳的方法，并探索了其储氢能力。该合成方法采用氰尿酰氯和三聚氰胺在低温（例如0、25和120摄氏度）和环境压力下使用常规玻璃器皿进行基于溶液的逐步缩合反应，无需高压釜容器。通过粉末X射线衍射、扫描和透射电子显微镜、选区电子衍射、能谱、元素分析、傅里叶变换红外光谱、X射线光电子能谱和电子能量损失光谱研究了合成的高富氮石墨碳的物理和化学结构。分析证实该产物具有高度结晶的富氮石墨结构（d(002) = 0.324 nm），碳氮比为1:1.12（>50原子%氮含量）。尽管该材料的 BET 表面积仅为 10 m(2)/g，但在室温和 100 bar 压力下，该材料被确定具有 0.34 wt% 的优异储氢容量。 (C) 2009 Elsevier Ltd. 保留所有权利。
An easy method for synthesizing highly nitrogen-enriched graphitic carbon was developed and its hydrogen storage capacity was explored. The synthesis method uses a solution-based, stepwise condensation reaction between cyanuric chloride and melamine at low temperature (e.g., 0, 25, and 120 degrees C) and ambient pressure using conventional glassware without the need for an autoclave vessel. The physical and chemical structure of the synthesized highly nitrogen-enriched graphitic carbon was investigated by powder X-ray diffraction, scanning and transmission electron microscopy, selected area electron diffraction, energy dispersive spectroscopy, elemental analysis, Fourier transform infrared spectroscopy, X-ray photoernission spectroscopy, and electron energy loss spectroscopy. The analyzes confirmed that the product has a highly crystalline nitrogen-enriched graphitic structure (d(002) = 0.324 nm) with a carbon-to-nitrogen ratio of 1:1.12 (>50 atomic% nitrogen content). The material was determined to have an excellent hydrogen storage capacity of 0.34 wt% at room temperature under 100 bar in spite of its low BET surface area of only similar to 10 m(2)/g. (C) 2009 Elsevier Ltd. All rights reserved.