Issue 23, 2017, Issue in Progress

Distribution of oxygen functional groups of graphene oxide obtained from low-temperature atomic layer deposition of titanium oxide

Abstract

The distribution of oxygen functional groups on the surface of graphene oxide (GO) has been investigated experimentally and theoretically. Atomic layer deposition of TiOx was used to clarify the location of oxygen functional groups. We found that the oxygen functional groups are distributed in the form of islands, which is confirmed using aberration corrected transmission electron microscopy and X-ray photoelectron spectroscopy. The density functional studies further support these findings. The evolution of oxygen functional groups was also investigated with GO treated at 150, 200, 250, and 300 °C. In addition, the reduction of epoxide and hydroxyl groups on the GO surface at different temperatures has been discussed in connection with ab initio molecular dynamics simulations.

Graphical abstract: Distribution of oxygen functional groups of graphene oxide obtained from low-temperature atomic layer deposition of titanium oxide

Supplementary files

Article information

Article type
Paper
Submitted
04 Jan 2017
Accepted
21 Feb 2017
First published
02 Mar 2017
This article is Open Access
Creative Commons BY license

RSC Adv., 2017,7, 13979-13984

Distribution of oxygen functional groups of graphene oxide obtained from low-temperature atomic layer deposition of titanium oxide

D. S. Shin, H. G. Kim, H. S. Ahn, H. Y. Jeong, Y. Kim, D. Odkhuu, N. Tsogbadrakh, H. Lee and B. H. Kim, RSC Adv., 2017, 7, 13979 DOI: 10.1039/C7RA00114B

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