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|
| Type |
Poster Presentation |
| Area |
Polymer Chemistry |
| Room No. |
Event Hall |
| Time |
4월 20일 (금요일) 11:00~12:30 |
| Code |
POLY.P-39 |
| Subject |
Simple synthesis of graphene using electrochemical method |
| Authors |
Dae-Geon Yoo, Chang Sik Ha*
Department of Polymer Science and Engineering, Pusan National University, Korea
|
| Abstract |
Reduced step and environmental-friendly synthesis of graphene is important for scalable synthesis and industrial application of graphene. The control of the graphene synthesis is also a major point in graphene based nanocomposites. General chemical method of graphite exfoliation uses strong acid to oxidize graphite surface. Also, this chemical oxidation method follows multi-procedures. Simple graphene synthesis method without using any super-strong acid is challenged by my researchers. In this study, we exfoliated graphite via electrochemical process in aqueous solutions. We used two types of graphite (graphite electrode and powder) and compared. Surface functional groups of electrochemically synthesized graphene depend on electrolytes and electrodes that are connected with graphite. Surface groups were removed using thermal and microwave treatments. Structure and exfoliated states of as-made graphene were studied by powder X-ray diffraction (XRD), transmission electron microscopy (TEM). To analyze surface defects and change in the number of graphene layer, we used Raman spectroscopy. Surface functional groups and elemental contents were measured using X-ray photoelectron spectroscopy (XPS) and energy dispersive x-ray spectroscopy (EDS) elemental mapping. |
| E-mail |
eorjs711@naver.com |
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121st General Meeting of the KCS