Electro-Deoxidation Behavior of Graphite Oxide in Aqueous Solution

Kwang Ho Jeong; Ha Myung Jeong; Sang Mun Jeong; Kyeong Youl Jung; Eun-Young Choi; Yun Chan Kang

doi:10.1252/jcej.12we220

Energy

Electro-Deoxidation Behavior of Graphite Oxide in Aqueous Solution

Kwang Ho Jeong, Ha Myung Jeong, Sang Mun Jeong, Kyeong Youl Jung, Eun-Young Choi, Yun Chan Kang

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Keywords: Electro-Deoxidation, Graphite Oxide, Reduced Graphite Oxide, KCl Solution, Oxygen-Containing Functional Groups

JOURNAL RESTRICTED ACCESS

2013 Volume 46 Issue 3 Pages 245-249

DOI https://doi.org/10.1252/jcej.12we220

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Abstract

The electro-deoxidation of unexfoliated GO has been carried out in aqueous solution. The electro-deoxidation of GO took place from −0.4 V vs. Ag/AgCl in KCl solution and showed the best results at −1.0 V. The pH value of the KCl solution after the electro-deoxidation increased up to 11.35 from the neutral electrolyte (pH=7.20) due to the build-up of OH⁻ in the electrolyte, which originates from the oxygen functional groups removed from GO by the electro-deoxidation. The neutral solution was more effective than the alkali solution for the electro-deoxidation of GO.

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