| 학회 |
한국공업화학회 |
| 학술대회 |
2021년 봄 (05/12 ~ 05/14, 부산 벡스코(BEXCO)) |
| 권호 |
25권 1호 |
| 발표분야 |
포스터-환경·에너지 |
| 제목 |
Effects of Cations (Na+, K+, Li+) on exfoliated graphene flakes on organic solvent |
| 초록 |
The high-shear exfoliation of graphite is a cost-effective liquid-phase exfoliation method for producing defect-free few-layer graphene dispersions. Here, we demonstrate a novel method using NaOH, KOH, and LiOH in N-methyl-2-pyrrolidone (NMP) for increased production of graphene flakes (GF) for relativity short operation time of a few hours. The concentration of GF was measured by using UV-vis absorption spectrophotometry, and also the defects of the GF was confirmed by the I(D)/I(G) ratio in Raman spectra. X-ray diffraction spectra revealed the specific cations could improve the degree of exfoliation by expanding the interlayer spacing of graphite. Our work will provide a guide for designing a cations-added exfoliation procedure to obtain higher concentration of exfoliated graphene nanoplatelets. |
| 저자 |
정재구, 도시현, 박호범
|
| 소속 |
한양대 |
| 키워드 |
Graphene flake; liquid-phased exfoliation; NMP; Cations.
|
| E-Mail |
|
