Issue 9, 2016

The influence of oxidation debris containing in graphene oxide on the adsorption and electrochemical properties of 1,10-phenanthroline-5,6-dione

Abstract

It is gradually accepted that graphene oxide, which is derived from the exfoliation of graphite oxide that is synthesized by the chemical oxidation of graphite, actually consists of partially oxidized graphene sheets and highly oxidized carbonaceous debris. The quantity of oxidation debris comprises around one third of the total mass of the graphene oxide. The presence of oxidation debris has a significant impact on the physical and chemical properties of graphene oxide. In this article, we address the influence of the oxidation debris on the surface properties of graphene oxide. We discovered that the surface adsorption of organic molecules on graphene oxide was improved greatly after the elimination of the oxidation debris. A typical redox mediator, 1,10-phenanthroline-5,6-dione, was studied as the model adsorbed molecule in terms of its adsorption quantity and electrochemical response. After removing the oxidation debris, a five-fold increase in adsorption capacity is achieved on the same amount of graphene oxide. Correspondingly, the electrochemical response for the oxidation of NADH mediated by the adsorbed 1,10-phenanthroline-5,6-dione was enhanced as well, which led to improved analytical performances in terms of the sensitivity, linear range and detection limit for the purified graphene oxide modified electrode.

Graphical abstract: The influence of oxidation debris containing in graphene oxide on the adsorption and electrochemical properties of 1,10-phenanthroline-5,6-dione

Article information

Article type
Paper
Submitted
07 déc. 2015
Accepted
13 janv. 2016
First published
13 janv. 2016

Analyst, 2016,141, 2761-2766

The influence of oxidation debris containing in graphene oxide on the adsorption and electrochemical properties of 1,10-phenanthroline-5,6-dione

D. Ma, L. Dong, M. Zhou and L. Zhu, Analyst, 2016, 141, 2761 DOI: 10.1039/C5AN02506K

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements