The solvent-free mechanochemical synthesis of mildly oxidized graphene oxide and its application as a novel conductive surfactant. (17th April 2019)

• Record Type: Journal Article
• Authors: Chen, Jianhui; Chen, Wufeng; Song, Dongcheng; Lai, Bin; Sheng, Yuanyuan; Yan, Lifeng
• Is Part Of: New journal of chemistry. Volume 43:Number 18(2019)
• Page Start: 7057
• Page End: 7064
• Publication Date: 2019-04-17
• Subjects: Chemistry -- Periodicals; Chimie -- Périodiques; 540
• DOI: 10.1039/c9nj00529c
• Languages: English
• ISSNs: 1144-0546

Abstract

Abstract : A solvent-free mechanochemical synthetic mildly oxidized graphene oxide (MOGO) can act as an electrically conductive surfactant for dispersing nanoparticles. Abstract : The preparation of single/few layer graphene or graphene oxide on a large scale is still a challenge. Here, an eco-friendly and uncomplicated approach for the preparation of mildly oxidized graphene oxide (MOGO) has been developed by the solid-state mechanochemical ball-milling of graphite powder in the presence of a solid oxidant potassium peroxymonosulfate (Oxone). XRD, XPS, Raman, AFM and TEM studies revealed that the MOGO was of the size of micrometers and mainly had 3 layers with a high C/O ratio. The as-prepared MOGO showed excellent dispersion in various solvents with high stability. Interestingly, the MOGO can be used as a two-dimensional conductive surfactant to stabilize silver nanoparticles in an aqueous suspension. Therefore, MOGO can be widely used to disperse and stabilize conductive nanoparticles in a fluid medium.