Electrografting of amino-TEMPO on graphene oxide and electrochemically reduced graphene oxide for electrocatalytic applications.

Yuan, Baiqing; Xu, Chunying; Zhang, Daojun; Zhang, Renchun; Su, Huimin; Guan, Pei; Nie, Jiajia; Fernandez, Carlos

Abstract

4-Amino-2,2,6,6-tetramethyl-1-piperridine N-oxyl (4-amino-TEMPO), an electroactive nitroxide radical, was attached to the surface of graphene oxide (GO) and electrochemically reduced graphene oxide (ERGO) modified glassy carbon electrode by a simple, rapid and green electrografting method. The electroactive interfaces were analyzed by X-ray photoelectron spectroscopy (XPS) and cyclic voltammetry (CV). The calculated surface coverage for 4-amino-TEMPO is up to 1.55 × 10− 9 mol·cm− 2. The modified electroactive interface exhibited excellent electrocatalytic activity towards the electro-oxidation of reduced glutathione (GSH) and hydrogen peroxide (H2O2).

Citation

YUAN, B., XU, C., ZHANG, D., ZHANG, R., SU, H., GUAN, P., NIE, J., FERNANDEZ, C. 2017. Electrografting of amino-TEMPO on graphene oxide and electrochemically reduced graphene oxide for electrocatalytic applications. Electrochemistry communications [online], 81, pages 18-23. Available from: https://doi.org/10.1016/j.elecom.2017.05.016

• Journal Article Type: Article
• Acceptance Date: May 24, 2017
• Online Publication Date: May 25, 2017
• Publication Date: Aug 31, 2017
• Deposit Date: May 26, 2017
• Publicly Available Date: May 26, 2018
• Journal: Electrochemistry communications
• Print ISSN: 1388-2481
• Publisher: Elsevier
• Peer Reviewed: Peer Reviewed
• Volume: 81
• Pages: 18-23
• DOI: https://doi.org/10.1016/j.elecom.2017.05.016
• Keywords: AminoTEMPO; Nitroxide radical; Electrochemically reduced graphene oxide; Reduced glutathione; Hydrogen peroxide
• Public URL: http://hdl.handle.net/10059/2336