Single-step ambient-air synthesis of graphene from renewable precursors as electrochemical genosensor

Dong Han Seo, Shafique Pineda, Jinghua Fang, Yesim Gozukara, Samuel Yick, Avi Bendavid, Simon Kwai Hung Lam, Adrian T. Murdock, Anthony B. Murphy, Zhao Jun Han () and Kostya (Ken) Ostrikov
Additional contact information
Dong Han Seo: CSIRO Manufacturing
Shafique Pineda: CSIRO Manufacturing
Jinghua Fang: School of Mathematical and Physical Sciences, The University of Technology
Yesim Gozukara: CSIRO Manufacturing
Samuel Yick: CSIRO Manufacturing
Avi Bendavid: CSIRO Manufacturing
Simon Kwai Hung Lam: CSIRO Manufacturing
Adrian T. Murdock: CSIRO Manufacturing
Anthony B. Murphy: CSIRO Manufacturing
Zhao Jun Han: CSIRO Manufacturing
Kostya (Ken) Ostrikov: CSIRO Manufacturing

Nature Communications, 2017, vol. 8, issue 1, 1-9

Abstract: Abstract Thermal chemical vapour deposition techniques for graphene fabrication, while promising, are thus far limited by resource-consuming and energy-intensive principles. In particular, purified gases and extensive vacuum processing are necessary for creating a highly controlled environment, isolated from ambient air, to enable the growth of graphene films. Here we exploit the ambient-air environment to enable the growth of graphene films, without the need for compressed gases. A renewable natural precursor, soybean oil, is transformed into continuous graphene films, composed of single-to-few layers, in a single step. The enabling parameters for controlled synthesis and tailored properties of the graphene film are discussed, and a mechanism for the ambient-air growth is proposed. Furthermore, the functionality of the graphene is demonstrated through direct utilization as an electrode to realize an effective electrochemical genosensor. Our method is applicable to other types of renewable precursors and may open a new avenue for low-cost synthesis of graphene films.

Date: 2017
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DOI: 10.1038/ncomms14217

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