Issue 12, 2019, Issue in Progress

Enhanced oxygen evolution reaction on amine functionalized graphene oxide in alkaline medium

Abstract

Development of highly efficient oxygen evolution reaction (OER) electrocatalysts is a critical challenge in the cost-effective generation of clean fuels. Here, a metal-free tyramine functionalized graphene oxide (T-GO) electrocatalyst is proposed to use in alkaline electrolytes for enhanced OER. Moreover, the T-GO and GO nanomaterials are well characterized by SEM, XRD, FTIR, XPS and Raman spectroscopy. T-GO exhibits an electrocatalytic OER with a current density of 2 mA cm−2 at a low onset potential of ∼1.39 V and a small Tafel slope of about 69 mV dec−1 and GO exhibits an onset potential of 1.51 V and Tafel slope of about 92 mV dec−1. Additionally, the current stability and RRDE based diffusion controlled response of the T-GO electrocatalyst are outstanding compared to GO. This study establishes metal free T-GO as an efficient electrocatalyst for the OER and used for cathodic production of hydrogen as a counter reaction in the field of water splitting.

Graphical abstract: Enhanced oxygen evolution reaction on amine functionalized graphene oxide in alkaline medium

Supplementary files

Article information

Article type
Paper
Submitted
15 Dec 2018
Accepted
10 Feb 2019
First published
22 Feb 2019
This article is Open Access
Creative Commons BY license

RSC Adv., 2019,9, 6444-6451

Enhanced oxygen evolution reaction on amine functionalized graphene oxide in alkaline medium

V. S. Sapner, B. B. Mulik, Renuka V. Digraskar, S. S. Narwade and B. R. Sathe, RSC Adv., 2019, 9, 6444 DOI: 10.1039/C8RA10286D

This article is licensed under a Creative Commons Attribution 3.0 Unported Licence. You can use material from this article in other publications without requesting further permissions from the RSC, provided that the correct acknowledgement is given.

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