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Plasma Jet Printing and in Situ Reduction of Highly Acidic Graphene Oxide

Dey, Avishek; Krishnamurthy, Satheesh; Bowen, James; Nordlund, Dennis; Meyyappan, M. and Gandhiraman, Ram P. (2018). Plasma Jet Printing and in Situ Reduction of Highly Acidic Graphene Oxide. ACS Nano, 12(6) pp. 5473–5481.

DOI (Digital Object Identifier) Link: https://doi.org/10.1021/acsnano.8b00903
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Abstract

Miniaturization of electronic devices and the advancement of Internet of Things pose exciting challenges to develop technologies for patterned deposition of functional nanomaterials. Printed and flexible electronic devices and energy storage devices can be embedded onto clothing or other flexible surfaces. Graphene oxide (GO) has gained much attention in printed electronics due its solution processability, robustness, and high electrical conductivity in the reduced state. Here, we introduce an approach to print GO films from highly acidic suspensions with in situ reduction using an atmospheric pressure plasma jet. Low temperature plasma of a He and H2 mixture was used successfully to reduce a highly acidic GO suspension (pH < 2) in situ during deposition. This technique overcomes the multiple intermediate steps required to increase the conductivity of deposited GO. X-ray spectroscopic studies confirmed that the reaction intermediates and the concentration of oxygen functionalities bonded to GO have been reduced significantly by this approach without any additional steps. Moreover, the reduced GO films showed enhanced conductivity. Hence, this technique has a strong potential for printing conducting patterns of GO for a range of large-scale applications.

Item Type: Journal Item
Copyright Holders: 2018 American Chemical Society
ISSN: 1936-086X
Project Funding Details:
Funded Project NameProject IDFunding Body
Not SetNot SetUKIERI British Council
Keywords: graphene oxide; reduction; plasma jet; printing; flexible electronics; functionalization; surface coating
Academic Unit/School: Faculty of Science, Technology, Engineering and Mathematics (STEM) > Engineering and Innovation
Faculty of Science, Technology, Engineering and Mathematics (STEM)
Research Group: Smart Materials
Item ID: 55235
Depositing User: James Bowen
Date Deposited: 29 May 2018 15:48
Last Modified: 15 Sep 2018 16:35
URI: http://oro.open.ac.uk/id/eprint/55235
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