| 학회 |
한국고분자학회 |
| 학술대회 |
2015년 가을 (10/06 ~ 10/08, 대구컨벤션센터(EXCO)) |
| 권호 |
40권 2호 |
| 발표분야 |
고분자구조 및 물성 |
| 제목 |
Graphene prepared by thermal reduction-exfoliation of graphite oxide: Effect of raw graphite particle size on the properties of graphite oxide and graphene |
| 초록 |
We report the effect of raw graphite size on the properties of graphite oxide and graphene prepared by thermal reduction-exfoliation of graphite oxide. Transmission electron microscope analysis shows that the lateral size of graphene becomes smaller when smaller size graphite is used. X-ray diffraction analysis confirms that graphite with smaller size is more effectively oxidized, resulting in a more effective subsequent exfoliation of the obtained graphite oxide toward graphene. X-ray photoelectron spectroscopy demonstrates that reduction of the graphite oxide derived from smaller size graphite into graphene is more efficient. However, Raman analysis suggests that the average size of the in-plane sp2-carbon domains on graphene is smaller when smaller size graphite is used. The enhanced reduction degree and the reduced size of sp2-carbon domains contribute contradictively to the electrical conductivity of graphene when the particle size of raw graphite reduces. |
| 저자 |
정한모, 손동락, 다오, 이희성
|
| 소속 |
울산대 |
| 키워드 |
A. nanostructures; A. surfaces; D. defects; D. electrical properties; D. electronic structure
|
| E-Mail |
|
