Synthesis of oxygen functional group-controlled monolayer graphene oxide

Tatsuki Tsugawa, Kazuto Hatakeyama, Junko Matsuda, Michio Koinuma, Shintaro Ida

研究成果: Contribution to journalArticle査読

抄録

Graphene oxide (GO) contains various types of oxygen functional groups (e.g., COH, COC, C=O, and O=COH groups), which provide superior functions such as proton conductivity, catalytic activity, and selective absorption. In contrast, the complex structure of GO complicates control over its function; therefore, GO with a simple and/or uniform structure is desired. In this study, we demonstrated that monolayer GO, in which surface oxygen functional groups are controlled as

epoxy groups, was successfully prepared by exfoliating graphite oxide prepared using Brodie’s method. The monolayer ratio of GO reached 99.2%, and the nanosheets were stable in water for 1 month. Fourier transform infrared, X-ray photoelectron spectroscopy, and temperature-programmed desorption analyses indicated that most oxygen functional groups on GO were epoxy groups. Further, it was determined that GO had structural regularity over a wide range and small amounts of lattice defects despite being oxidized. This means that the developed GO can potentially advance considerably GO studies by replacing previous GO.

本文言語英語
ページ(範囲)2195-2201
ページ数7
ジャーナルBulletin of the Chemical Society of Japan
94
9
DOI
出版ステータス出版済み - 2021

All Science Journal Classification (ASJC) codes

  • 化学 (全般)

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