한국신재생에너지학회:학술대회논문집
- 한국신재생에너지학회 2009년도 춘계학술대회 논문집
- /
- Pages.765-768
- /
- 2009
기상활성화 표면처리된 다중벽 탄소나노튜브의 수소저장거동
Hydrogen Storage Behaviors of Multi-walled Carbon Nanotubes Modified by Physical Activation Process
- Park, Soo-Jin (Department of chemistry, Inha university) ;
- Lee, Seul-Yi (Department of chemistry, Inha university) ;
- Kim, Byung-Joo (Department of nano material research, Jeonju institute of machinery and carbon composites)
- 발행 : 2009.06.25
초록
In this work, we prepared the activated multi-walled carbon nanotubes (Acti-MWNTs) with well developed physical surface structures, high specific surface area, and higher adsorption capacity by a physical activation process, in order to enhance the hydrogen storage capacity. The Acti-MWNTs' changes in the crystalline phase and in their lattice distortions were characterized by X-ray diffraction (XRD). The textural properties of the Acti-MWNTs were investigated by a nitrogen adsorption isotherms by Brunauer-Emmett-Teller (BET) equation and Harvath-Kawazoe (H-K) calculation, respectively. The hydrogen storage capacity of the Acti-MWNTs was investigated by BEL-HP at 298 K/100 bar. The hydrogen storage capacity of the Acti-MWNTs was improved with the physical activation, resulted from the formation of new hydrogen-favorable sites on the Acti-MWNT surfaces. In conclusion, the physical activation was one of the effective method to enhance the hydrogen storage capacity of the MWNTs.
키워드