Laminated graphene oxide (GO) membrane has great attention for ultrafast flux membrane with well-defined pore structure. However, laminated structure is sensitive to various factors such as functionalization, fabrication method and especially support morphology due to ultrathin thickness. Herein, we investigated surface roughness effect by controlling systematically wrinkled structure of support with ion beam treatment. Wrinkled surface of support generates free volume at interface, facilitating fast water transport, which confirmed 6.4 times enhancement on permeation of water while maintaining high rejection of all dye molecules. The tunability of nanostructure through support control can provide development for ultrathin GO membrane in water purification.

• 남윤태(한국과학기술원 생명화학공학과 유기광전자재료 연구실) | Yoon Tae Nam
• 김선준(한국과학기술원 생명화학공학과 유기광전자재료 연구실) | Seon Joon Kim
• 강경민(한국과학기술원 생명화학공학과 유기광전자재료 연구실) | Kyoung Min Kang
• 정우빈(한국과학기술원 생명화학공학과 유기광전자재료 연구실) | Woo-Bin Jung
• 정희태(한국과학기술원 생명화학공학과 유기광전자재료 연구실) | Hee-Tae Jung
• 김대우(한국과학기술원 생명화학공학과 유기광전자재료 연구실) | Dae Woo Kim