Raman identification of onion-like carbon
Raman identification of onion-like carbon
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DOI：
10.1016/s0008-6223(98)00014-1
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发表时间：
1998-01-01
期刊：
影响因子：
10.9
通讯作者：
Chuvilin, AL
中科院分区：
文献类型：
--
作者：
Obraztsova, ED;Fujii, M;Chuvilin, AL
观察到通过退火诱导 (T=1800 K) 从 5 nm 尺寸的金刚石颗粒上削掉外碳层而合成的碳球壳（洋葱）的特定拉曼光谱。它在 1572 cm(-1) 处显示出清晰可见的谱带。它从 1582 cm(-1) 位置（以纯石墨而闻名）向下移动被解释为壳曲率的影响。估计了构成 5 nm 直径洋葱的壳的总体贡献。洋葱一阶拉曼谱带的狭窄性（FWHM = 15 cm(-1)）以及二阶光谱中 2712 cm(-1) 处的峰（FWHM = 65 cm(-1)）表明贝壳中石墨网络的结构高度完美。 (C) 1998 Elsevier Science Ltd. 保留所有权利。
A specific Raman spectrum of carbon spherical shells (onions) synthesized by annealing-induced (T=1800 K) chipping off the outer carbon layers from 5-nm size diamond particles has been observed. It shows a clearly seen band at 1572 cm(-1). Its downshift from the position 1582 cm(-1) (known for a pure graphite) is interpreted as an influence of shell curvature. The summary contribution of the shells constituting the 5-nm diameter onion is estimated. A narrowness (FWHM = 15 cm(-1)) of the first order Raman band of onions together with a dominance of the peak at 2712 cm(-1) (FWHM = 65 cm(-1)) in their second order spectrum point to a high degree of structural perfection of a graphitic network in shells. (C) 1998 Elsevier Science Ltd. All rights reserved.