A study of graphenes prepared by different methods: characterization, properties and solubilization

被引：490

作者：

Subrahmanyam, K. S.

Vivekchand, S. R. C.

Govindaraj, A.

Rao, C. N. R. ^{[1
]}

机构：

[1] Jawaharlal Nehru Ctr Adv Sci Res, Chem & Phys Mat Unit, CSIR, Ctr Excellence Chem, Bangalore 560064, Karnataka, India

来源：

JOURNAL OF MATERIALS CHEMISTRY | 2008年 / 18卷 / 13期

关键词：

D O I：

10.1039/b716536f

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：

Graphene has been prepared by different methods: pyrolysis of camphor under reducing conditions (CG), exfoliation of graphitic oxide (EG), conversion of nanodiamond (DG) and arc evaporation of SiC (SG). The samples were examined by X-ray diffraction (XRD), transmission electron microscopy, atomic force microscopy, Raman spectroscopy and magnetic measurements. Raman spectroscopy shows EG and DG to exhibit smaller in-plane crystallite sizes, but in combination with XRD results EG comes out to be better. The CG, EG and DG samples prepared by us have BET surface areas of 46, 925 and 520 m(2) g(-1) respectively and exhibit significant hydrogen uptake up to 3 wt%. EG also exhibits a high CO2 uptake (34.7 wt%). Electrochemical redox properties of the graphene samples have been examined in addition to their use in electrochemical supercapacitors. Functionalization of EG and DG through amidation has been carried out with the purpose of solubilizing them in non-polar solvents. Water-soluble graphene has been produced by extensive acid treatment of EG or treatment with polyethylene glycol.

引用

页码：1517 / 1523

页数：7

共 19 条

[1] Structure and electronic properties of graphite nanoparticles [J].

Andersson, OE ;

Prasad, BLV ;

Sato, H ;

Enoki, T ;

Hishiyama, Y ;

Kaburagi, Y ;

Yoshikawa, M ;

Bandow, S .

PHYSICAL REVIEW B, 1998, 58 (24) :16387-16395

[2] High temperature carbon-carbon supercapacitor using ionic liquid as electrolyte [J].

Balducci, A. ;

Dugas, R. ;

Taberna, P. L. ;

Simon, P. ;

Plee, D. ;

Mastragostino, M. ;

Passerini, S. .

JOURNAL OF POWER SOURCES, 2007, 165 (02) :922-927

[3] Electrocatalysis at graphite and carbon nanotube modified electrodes: edge-plane sites and tube ends are the reactive sites [J].

Banks, CE ;

Davies, TJ ;

Wildgoose, GG ;

Compton, RG .

CHEMICAL COMMUNICATIONS, 2005, (07) :829-841

[4] Hydrogen storage in metal-organic frameworks [J].

Collins, David J. ;

Zhou, Hong-Cai .

JOURNAL OF MATERIALS CHEMISTRY, 2007, 17 (30) :3154-3160

[5]

Conway B. E., 1999, ELECTROCHEMICAL SUPE

[6] Raman spectroscopy of graphene and graphite: Disorder, electron-phonon coupling, doping and nonadiabatic effects [J].

Ferrari, Andrea C. .

SOLID STATE COMMUNICATIONS, 2007, 143 (1-2) :47-57

[7] The rise of graphene [J].

Geim, A. K. ;

Novoselov, K. S. .

NATURE MATERIALS, 2007, 6 (03) :183-191

[8] Hydrogen storage in carbon nanotubes and related materials [J].

Gundiah, G ;

Govindaraj, A ;

Rajalakshmi, N ;

Dhathathreyan, KS ;

Rao, CNR .

JOURNAL OF MATERIALS CHEMISTRY, 2003, 13 (02) :209-213

[9] Raman scattering from high-frequency phonons in supported n-graphene layer films [J].

Gupta, A. ;

Chen, G. ;

Joshi, P. ;

Tadigadapa, S. ;

Eklund, P. C. .

NANO LETTERS, 2006, 6 (12) :2667-2673

[10] Graphene: carbon in two dimensions [J].

Katsnelson, Mikhail I. .

MATERIALS TODAY, 2007, 10 (1-2) :20-27

← 1 2 →