Defect formation in graphene nanosheets by acid treatment: an x-ray absorption spectroscopy and density functional theory study

被引：108

作者：

Coleman, V. A. ^{[1
]}

Knut, R. ^{[1
]}

Karis, O. ^{[1
]}

Grennberg, H. ^{[2
]}

Jansson, U. ^{[3
]}

Quinlan, R. ^{[4
,5
]}

Holloway, B. C. ^{[5
]}

Sanyal, B. ^{[1
]}

Eriksson, O. ^{[1
]}

机构：

[1] Uppsala Univ, Angstrom Lab, Dept Phys, Uppsala 75121, Sweden

[2] Uppsala Univ, Dept Biochem & Organ Chem, Uppsala 75123, Sweden

[3] Uppsala Univ, Angstrom Lab, Dept Chem Mat, Uppsala 75121, Sweden

[4] Coll William & Mary, Dept Appl Sci, Williamsburg, VA 23187 USA

[5] Luna Innovat, Nano Works Div, Danville, VA 24541 USA

来源：

JOURNAL OF PHYSICS D-APPLIED PHYSICS | 2008年 / 41卷 / 06期

关键词：

D O I：

10.1088/0022-3727/41/6/062001

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

In-plane defects have been introduced into graphene nanosheets by treatment with hydrochloric acid. Acid treatment induces bond cleavage in the C-C network via electrophilic attack. These resultant vacancy sites will then undergo further reactions with the surrounding ambient to produce C-O and C-H bonds. A sigma* resonance at 287 eV in the carbon K-edge x-ray absorption spectra is observed with acid treatment and is assigned to C-O states. Theoretical modelling of a di-vacancy in a graphene bilayer reproduces all essential features of this resonance and in addition predicts a metallic conductivity of states around this vacancy. The possibility of engineering the properties of graphene via the routes explored here is an important step towards establishing strategies for building devices based on this material.

引用

页数：4

共 16 条

[1] Dissociative adsorption of small molecules at vacancies on the graphite (0001) surface [J].

Allouche, A. ;

Ferro, Y. .

CARBON, 2006, 44 (15) :3320-3327

[2] Carbon-based electronics [J].

Avouris, Phaedon ;

Chen, Zhihong ;

Perebeinos, Vasili .

NATURE NANOTECHNOLOGY, 2007, 2 (10) :605-615

[3] Chemically functionalized carbon nanotubes [J].

Balasubramanian, K ;

Burghard, M .

SMALL, 2005, 1 (02) :180-192

[4] Ozonized single-walled carbon nanotubes investigated using NEXAFS spectroscopy [J].

Banerjee, S ;

Hemraj-Benny, T ;

Balasubramanian, M ;

Fischer, DA ;

Misewich, JA ;

Wong, SS .

CHEMICAL COMMUNICATIONS, 2004, (07) :772-773

[5] Surface characterisation of nano-structured carbon films deposited by Nd:YAG pulsed laser deposition [J].

Cappelli, E ;

Scilletta, C ;

Orlando, S ;

Flammini, R ;

Iacobucci, S ;

Ascarelli, P .

THIN SOLID FILMS, 2005, 482 (1-2) :305-310

[6] Growth of nanographite on Pt(111) and its edge state [J].

Entani, S ;

Ikeda, S ;

Kiguchi, M ;

Saiki, K ;

Yoshikawa, G ;

Nakai, I ;

Kondoh, H ;

Ohta, T .

APPLIED PHYSICS LETTERS, 2006, 88 (15)

[7] Comparison of analytical techniques for purity evaluation of single-walled carbon nanotubes [J].

Itkis, ME ;

Perea, DE ;

Jung, R ;

Niyogi, S ;

Haddon, RC .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2005, 127 (10) :3439-3448

[8] Efficient iterative schemes for ab initio total-energy calculations using a plane-wave basis set [J].

Kresse, G ;

Furthmuller, J .

PHYSICAL REVIEW B, 1996, 54 (16) :11169-11186

[9] Oxygen-containing functional groups on single-wall carbon nanotubes: NEXAFS and vibrational spectroscopic studies [J].

Kuznetsova, A ;

Popova, I ;

Yates, JT ;

Bronikowski, MJ ;

Huffman, CB ;

Liu, J ;

Smalley, RE ;

Hwu, HH ;

Chen, JGG .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2001, 123 (43) :10699-10704

[10] Rapid acid-mediated purification of single-walled carbon nanotubes with homogenization of bulk properties [J].

Li, Junxin ;

Chajara, Khalil ;

Lindgren, Jan ;

Grennberg, Helena .

JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY, 2007, 7 (4-5) :1525-1529

← 1 2 →