Role of peroxide ions in formation of graphene nanosheets by electrochemical exfoliation of graphite

Kodepelly Sanjeeva Rao, Jaganathan Senthilnathan, Yung Fang Liu, Masahiro Yoshimura

研究成果: Article

87 引文 斯高帕斯(Scopus)

摘要

This study demonstrates a facile, mild and environmentally-friendly sustainable (soft processing) approach for the efficient electrochemical exfoliation of graphite using a sodium hydroxide/hydrogen peroxide/water (NaOH/H2O2/H2O) system that can produce high-quality, anodic few-layer graphene nanosheets in 95% yield at ambient reaction conditions. The control experiment conducted using NaOH/H2O revealed the crucial role of H2O2 in the exfoliation of graphite. A possible exfoliation mechanism is proposed. The reaction of H 2O2 with hydroxyl ions (HO-) leads to the formation of highly nucleophilic peroxide ions (O22-), which play a crucial role in the exfoliation of graphite via electrochemical-potential-assisted intercalation and strong expansion of graphite sheets.

原文English
文章編號4237
期刊Scientific reports
4
DOIs
出版狀態Published - 2014 二月 28

All Science Journal Classification (ASJC) codes

  • General

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