Ageing effects in nanographite monitored by Raman spectroscopy

Ageing effects in nanographite monitored by Raman spectroscopy
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DOI：
10.1002/pssb.200879594
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发表时间：
2008-10
期刊：
physica status solidi (b)
影响因子：
--
通讯作者：
T. Makarova;M. Riccò;D. Pontiroli;M. Mazzani;M. Belli;Angelo Goffredi
T. Makarova;M. Riccò;D. Pontiroli;M. Mazzani;M. Belli;Angelo Goffredi
中科院分区：
其他
文献类型：
--
作者：
T. Makarova;M. Riccò;D. Pontiroli;M. Mazzani;M. Belli;Angelo Goffredi

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通过监测拉曼光谱的演变，研究了在氩气气氛中球磨和真空安瓿中储存的纳米石墨的结构弛豫。一些与“面内”结构缺陷（如空位、位错或晶界）和与“面外”缺陷（如层错）相关的拉曼能带的减少伴随着新能带在1180和2000 cm-1附近的增加。在暴露于纯无水氢通量的纳米石墨样品中，这些条带的发展受到抑制。（©2008 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim）
The structural relaxation of nanographite ball‐milled in argon atmosphere and stored in evacuated ampoules, has been studied by monitoring the evolution of the Raman spectra. Reduction of some Raman bands associated with “in‐plane” structural defects, such as vacancies, dislocations or grain boundaries, and those associated with “out‐of‐plane” defects, such as stacking faults, is accompanied by the rise of new bands around 1180 and 2000 cm–1. The development of these bands is suppressed in nanographite samples exposed to a flux of pure anhydrous hydrogen. (© 2008 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)