Preparation of water-dispersible graphene by facile surface modification of graphite oxide

被引：86

作者：

Kuila, Tapas ^{[1
]}

Khanra, Partha ^{[1
]}

Bose, Saswata ^{[1
]}

Kim, Nam Hoon ^{[2
]}

Ku, Bon-Cheol ^{[3
]}

Moon, Bongho ^{[4
]}

Lee, Joong Hee ^{[1
,2
]}

机构：

[1] Chonbuk Natl Univ, Dept BIN Fus Technol, WCU Program, Jeonju 561756, Jeonbuk, South Korea

[2] Chonbuk Natl Univ, Dept Hydrogen & Fuel Cell Engn, Jeonju 561756, Jeonbuk, South Korea

[3] Korea Inst Sci & Technol, Inst Adv Composite Mat, Woanju 565902, Jeonbuk, South Korea

[4] Chonnam Natl Univ, Sch Mech & Automot Engn, Yeosusi 550749, Chollanamdo, South Korea

来源：

NANOTECHNOLOGY | 2011年 / 22卷 / 30期

关键词：

CHEMICAL-VAPOR-DEPOSITION; REDUCTION; FUNCTIONALIZATION; CARBON; GROWTH;

D O I：

10.1088/0957-4484/22/30/305710

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Water-dispersible graphene was prepared by reacting graphite oxide and 6-amino-4-hydroxy-2-naphthalenesulfonic acid (ANS). X-ray diffraction study showed that the basal reflection (002) peak of graphite oxide was absent in the ANS-functionalized graphene (ANS-G), indicating crystal layer delamination. Ultraviolet-visible spectral data were recorded to assess the solubility of the ANS-G in water. Fourier transform infrared spectral analysis suggested the attachment of ANS molecules to the surface of graphene. Raman and x-ray photoelectron spectroscopy revealed that oxygen functionality in the graphite oxide had been removed during reduction. Atomic force microscopy found that the thickness of ANS-G in water was about 1.8 nm, much higher than that of single layer graphene. Thermal stability measurements also indicated successful removal of oxygen functionality from the graphite oxide and the attachment of thermally unstable ANS to the graphene surfaces. The electrical conductivity of ANS-G, determined by a four-point probe, was 145 S m(-1) at room temperature.

引用

页数：8

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