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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Jung, Jiyoung Han, Tae Hee Koo, Chong Min Kim, Joohoon Min, Kyoungho Hong, Soon Man Jung, Cheolsoo |
| Description | Author Affiliation: Min K ( Nano Hybrids Center, Korea Institute of Science and Technology, Hwarangno 14-gil 5, Soengbuk-gu, Seoul 136-791, Republic of Korea.) |
| Abstract | In this paper, we demonstrate an easy way to prepare a stable reduced graphene oxide (RGO) dispersion in aqueous or organic media by simple adjustment of the degree of reduction and pH of RGO dispersion, and a subsequent fabrication of transparent conductive RGO thin films on various substrates using a spray coating technique. RGOs were prepared using a hydrazine reducing agent from graphene oxide (GO), which was oxidized from graphite via a modified Hummers' method. The degree of reduction determined the surface properties, such as atomic composition, surface polarity, and potential of RGO platelets. In addition, pH significantly affected the surface potential of graphene dispersion. The fine adjustment of degree of reduction and pH of RGO dispersion made production of fine RGO dispersions in aqueous and organic media such as ethanol and DMF possible without any aid of dispersing agents. The stable RGO dispersion using volatile ethanol medium provided a unique advantage to be spray-coated into uniform transparent conductive RGO thin films on various substrates including silicon wafer, flexible polycarbonate film regardless of their surface properties, and even on non-planar substrates such as round-shaped glassware at room temperature. |
| ISSN | 00219797 |
| Issue Number | 1 |
| Journal | Journal of Colloid and Interface Science |
| Volume Number | 383 |
| e-ISSN | 10957103 |
| Language | English |
| Publisher | Elsevier |
| Publisher Date | 2012-10-01 |
| Publisher Place | United States |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Discipline Colloid & Interface Science |
| Content Type | Text |
| Resource Type | Article |
| Subject | Surfaces, Coatings and Films Colloid and Surface Chemistry Biomaterials Electronic, Optical and Magnetic Materials |
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