Efficient Reduction of Graphite Oxide by Sodium Borohydride and Its Effect on Electrical Conductance
Abstract
The conductivity of graphite oxide films is modulated using reducing agents. It is found that the sheet resistance of graphite oxide film reduced using sodium borohydride (NaBH4) is much lower than that of films reduced using hydrazine (N2H4). This is attributed to the formation of CN groups in the N2H4 case, which may act as donors compensating the hole carriers in reduced graphite oxide. In the case of NaBH4 reduction, the interlayer distance is first slightly expanded by the formation of intermediate boron oxide complexes and then contracted by the gradual removal of carbonyl and hydroxyl groups along with the boron oxide complexes. The fabricated conducting film comprising a NaBH4‐reduced graphite oxide reveals a sheet resistance comparable to that of dispersed graphene.
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The decrease in the ID/IG ratio indicates successful formation of rGO.
“This observation matched the fact that defects should decrease during the reduction pro-”
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- Authors
- Shin, H., Kim, K. K., Benayad, A., Yoon, S., Park, H. K., Jung, I., Jin, M. H., Jeong, H., Kim, J. M., Choi, J., & Lee, Y. H.
- Affiliations
- Samsung (South Korea) (KR)
- Sungkyunkwan University (KR)
- Corresponding author
- Choi, Jae‐Young
- Lee, Young Hee
- ORCID
- Venue
- Advanced Functional Materials
- Publisher
- Wiley
- Published
- 2009-06-12
- Volume
- 19
- Issue
- 12
- Pages
- 1987-1992
- ISSN
- 1616-301X (ISSN-L)
- 1616-3028
- OpenAlex
- W2076301381
- Cited by
- 2,283
- References
- 0
- Citations by year
- 2026: 33 · 2025: 68 · 2024: 68 · 2023: 88 · 2022: 105 · 2021: 135 · 2020: 160 · 2019: 156 · 2018: 182 · 2017: 181 · 2016: 188 · 2015: 204 · 2014: 210 · 2013: 178 · 2012: 180
- FWCI
- 52.39
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Advanced Functional Materials (publishedVersion)
- Funders
- Sungkyunkwan University
- Korea Science and Engineering Foundation
- China National Nuclear Corporation
- Topics
- Physical Sciences › Materials Science › Materials Chemistry › Graphene research and applications
- Physical Sciences › Materials Science › Polymers and Plastics › Conducting polymers and applications
- Physical Sciences › Materials Science › Materials Chemistry › Graphite, nuclear technology, radiation studies
- Keywords
- graphite oxide, sodium borohydride reduction, hydrazine reduction, sheet resistance, electrical conductivity, hole compensation, interlayer spacing, conducting films, graphene
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