Proton Conductivity of Graphene Oxide on Aging

Mohammad Razaul Karim, Md Saidul Islam, Nurun Nahar Rabin, Ryo Ohtani, Masaaki Nakamura, Michio Koinuma, Shinya Hayami

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)


The aging effect on the proton conductivity of graphene oxide (GO) is investigated. Characterizations of oxygenated functional groups and measurement of the proton conductivity have been performed using freshly prepared GO and the same sample after preserving for three years under ambient conditions. Although GO retains its layered structure, a slight deviation in its powder X-ray diffraction (PXRD) pattern and Raman spectra upon aging implies some changes in the interlayer distance and functional groups. Decomposition of epoxy groups on aging has been recognised by X-ray photoelectron spectroscopy (XPS) analysis. The proton conductivity was found to be reduced by 25% after three years of aging.

Original languageEnglish
Pages (from-to)642-645
Number of pages4
JournalAustralian Journal of Chemistry
Issue number5
Publication statusPublished - Jan 1 2017
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Chemistry(all)


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