Reduction of functionalized graphite oxides by trioctylphosphine in non-polar organic solvents


Autoria(s): Liu, Jincheng; Jeong, Huiseong; Liu, Jinzhang; Lee, Kyungmoon; Park, Ji-Yong; Ahn, YeongHwan; Lee, Soonil
Data(s)

01/04/2010

Resumo

Graphene, functionalized with oleylamine (OA) and soluble in non-polar organic solvents, was produced on a large scale with a high yield by combining the Hummers process for graphite oxidation, an amine-coupling process to make OA-functionalized graphite oxide (OA-GO), and a novel reduction process using trioctylphosphine (TOP). TOP acts as both a reducing agent and an aggregation-prevention surfactant in the reduction of OA-GO in 1,2-dichlorobenzene (DCB). The reduction of OA-GO is confirmed by X-ray photoelectron spectroscopy, Fourier-transform infrared spectroscopy, X-ray diffraction, thermogravimetric analysis, and Raman spectroscopy. The exfoliation of GO, OA GO, and OA-functionalized graphene (OA-G) is verified by atomic force microscopy. The conductivity of TOP-reduced OA G, which is deduced from the current–voltage characteristics of a vacuum-filtered thin film, shows that the reduction of functionalized GO by TOP is as effective as the reduction of GO by hydrazine.

Identificador

http://eprints.qut.edu.au/46052/

Publicador

Pergamon-Elsevier Science Ltd.

Relação

DOI:10.1016/j.carbon.2010.03.002

Liu, Jincheng, Jeong, Huiseong, Liu, Jinzhang, Lee, Kyungmoon, Park, Ji-Yong, Ahn, YeongHwan, & Lee, Soonil (2010) Reduction of functionalized graphite oxides by trioctylphosphine in non-polar organic solvents. Carbon, 48(8), pp. 2282-2289.

Direitos

Copyright 2010 Elsevier

Fonte

Faculty of Built Environment and Engineering; School of Engineering Systems

Palavras-Chave #020405 Soft Condensed Matter #030299 Inorganic Chemistry not elsewhere classified #090403 Chemical Engineering Design #091205 Functional Materials #Graphene #Reduction #Synthesis #Graphene oxide
Tipo

Journal Article