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Anode coverage for enhanced electrochemical oxidation: a green and efficient strategy towards water-dispersible graphene

Abstract

The synthesis of water-dispersible graphene (W-Gr) is essential for both laboratory-scale studies and practical applications. Herein, we report a green electrochemical route followed by post-sonication to prepare few-layered W-Gr of 1-6 atomic layers in thickness and 1.0-7.0 μm2 in area with a remarkably high yield (87.3%). Both outstanding dispersibility (8.2 mg mL-1) and good stability (at least 6 months) are achieved in water. Mechanism analysis indicates the critical effect of terephthalic acid coverage on anode for adequate electrochemical oxidation, which is the prerequisite for subsequent bubble- and sonication-exfoliation. This partial anode coverage strategy provides new possibility of simple electrochemical setup to greenly and scalably fabricate graphene with specific functionality.

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Publication details

The article was received on 06 Nov 2017, accepted on 08 Feb 2018 and first published on 08 Feb 2018


Article type: Paper
DOI: 10.1039/C7GC03345A
Citation: Green Chem., 2018, Accepted Manuscript
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    Anode coverage for enhanced electrochemical oxidation: a green and efficient strategy towards water-dispersible graphene

    H. Wang, S. Tian, S. Yang, G. Wang, X. You, L. Xu, Q. Li, P. He, G. Ding, Z. Liu and X. Xie, Green Chem., 2018, Accepted Manuscript , DOI: 10.1039/C7GC03345A

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