Anodic chlorine/nitrogen co-doping of reduced graphene oxide films at room temperature

Wang, Da-Wei, Wu, Kuang-Hsu, Gentle, Ian R. and Lu, Gao Qing (Max) (2012) Anodic chlorine/nitrogen co-doping of reduced graphene oxide films at room temperature. Carbon, 50 9: 3333-3341.


Author Wang, Da-Wei
Wu, Kuang-Hsu
Gentle, Ian R.
Lu, Gao Qing (Max)
Title Anodic chlorine/nitrogen co-doping of reduced graphene oxide films at room temperature
Journal name Carbon   Check publisher's open access policy
ISSN 0008-6223
1873-3891
Publication date 2012-08
Sub-type Article (original research)
DOI 10.1016/j.carbon.2011.12.054
Volume 50
Issue 9
Start page 3333
End page 3341
Total pages 9
Editor Francisco Rodríguez-Reinoso
Takashi Kyotani
Yury Gogotsi
Place of publication Kidlington, Oxford, United Kingdom
Publisher Pergamon
Collection year 2013
Language eng
Abstract Room temperature simultaneous doping of reduced graphene oxide films with oxygen, nitrogen and chlorine was performed through anodic polarization in a neutral nitrogen-deaerated KCl electrolyte. The thermodynamic electrochemical windows of water, dissolved nitrogen and chlorine anions were analyzed on the basis of the Pourbaix diagram. Anode polarization demonstrated that the nitrogen, water and chlorine anions can be oxidized at an applied potential of 1.7 V vs. NHE. The oxidative products, i.e. oxygen, nitrate anion and hypochlorous acid, can react with the reduced graphene oxide surface. X-ray photoelectron spectroscopy proved the chlorine–nitrogen co-doping of the treated film, along with an increase of oxygen groups. Surface structure evolution was also confirmed by Raman and Fourier-transform infrared spectroscopies. The anodic doping can be hindered by covering the reduced graphene oxide surface with sulfate anions or forming stable carbon–nitrogen bonds. Incorporation of oxygen, nitrogen and chlorine also helps to enhance the supercapacitance of the doped film.
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Special isse: Festschrift dedicated to Peter A. Thrower, Editor-in-Chief, 1972 - 2012

 
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Created: Mon, 18 Jun 2012, 10:49:33 EST by Lucy O'Brien on behalf of School of Chemistry & Molecular Biosciences