Production of nanoslized graphite powders from natural graphite by detonation
Production of nanoslized graphite powders from natural graphite by detonation
复制标题
天然石墨爆轰法制备纳米石墨粉
DOI：
10.1016/j.carbon.2007.12.013
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发表时间：
2008-03-01
期刊：
影响因子：
10.9
通讯作者：
Zhang, Yueju
中科院分区：
文献类型：
--
作者：
Sun, Guilei;Li, Xiaojie;Zhang, Yueju
介绍了一种以天然石墨为原料的爆轰法制备纳米石墨粉的方法。雷管在爆炸容器中引爆的过程具有能量的快速释放、HNO3石墨插层化合物的分解和爆炸引起的粉碎作用。通过XRD、SEM、TEM、BET、能量色散x射线能谱、拉曼光谱等对产物进行了研究。结果表明：制备的石墨粉具有完美的片状结构，且在微米尺度的二维平面上和纳米尺度上具有不同的厚度；纳米石墨的比表面积是原始石墨的6倍。该技术为制备纳米石墨粉提供了一种低成本、节能、高效的方法。(c) 2008 Elsevier Ltd.版权所有。
A detonation method for preparing nanosized graphite powders from natural graphite is described. The process initiated by a detonator in an explosion vessel features quick release of energy, decomposition of HNO3 graphite intercalation compounds and the smashing action due to the detonation. The products were soot-like deposits on the inner walls of the vessel, and were studied by XRD, SEM, TEM, BET, energy dispersive X-ray spectroscopy, and Raman spectroscopy. The results show that the as-made graphite powders have a perfect sheet-like structure, and vary in the two-dimensional plane at the micron scale and in thickness at the nanoscale. The specific surface area of the nanosized graphite is six times higher than that of the raw graphite. This technique may offer a low-cost, energy saving and efficient approach to the preparation of nanosized graphite powders. (c) 2008 Elsevier Ltd. All rights reserved.