High concentration few-layer graphene sheets obtained by liquid phase exfoliation of graphite in ionic liquid

被引：288
作者：
Nuvoli, Daniele [1 ,2 ]
Valentini, Luca [3 ,4 ]
Alzari, Valeria [1 ,2 ]
Scognamillo, Sergio [1 ,2 ]
Bon, Silvia Bittolo [3 ,4 ]
Piccinini, Massimo [5 ]
Illescas, Javier [6 ]
Mariani, Alberto [1 ,2 ]
机构：
[1] Univ Sassari, Dipartimento Chim, I-07100 Sassari, Italy
[2] Local INSTM Unit, I-07100 Sassari, Italy
[3] Univ Perugia, Dipartimento Ingn Civile & Ambientale, I-05100 Terni, Italy
[4] Local INSTM Unit, I-05100 Terni, Italy
[5] Porto Conte Ric Srl, I-07041 Alghero, SS, Italy
[6] Univ Nacl Autonoma Mexico, Inst Invest Mat, Mexico City 04510, DF, Mexico
来源：
JOURNAL OF MATERIALS CHEMISTRY | 2011年 / 21卷 / 10期
关键词：
CRYSTALS;
D O I：
10.1039/c0jm02461a
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
In the present work, the use of a commercial ionic liquid as a convenient solvent medium for graphite exfoliation in mild and easy conditions without any chemical modification is presented. To confirm the presence of few layer graphene, its dispersion, which exhibits Tyndall effect, was characterized by Raman and UV spectroscopies, and atomic force and field emission electron microscopies. It is noteworthy that, by gravimetric analysis, a graphene concentration as high as 5.33 mg ml(-1) was determined, which is the highest value reported so far in any solvent.
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收藏
页码：3428 / 3431
页数：4
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