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  • 09월 01일 18시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

제118회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Reversible transformation of hydrophobicity and hydrophilicity of Single-walled Carbon Nanotubes grown on textured Si surfaces

등록일
2016년 9월 1일 11시 28분 43초
접수번호
2327
발표코드
PHYS.P-437 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
10월 13일 (목요일) 11:00~12:30
발표형식
포스터
발표분야
물리화학
저자 및
공동저자
이종택, 이준영, 양종희, 박태훈, 이휘건*
한양대학교 화학과, Korea
Surface modification of carbon nanotubes (CNTs) has recently attracted a great deal of attention, because the surface characteristics considerably affect applications of CNTs in the fields of biomedical applications, biosensors, catalysts supports, and composites. Wettability of CNTs by liquids is one of the most important surface properties, which normally expressed by contact angle. It is believed that the contact angle of CNTs is determined by chemical composition and surface roughness. Single-walled Carbon Nanotubes (SWNTs) grown on textured Si surfaces by chemical vapor deposition method are Superhydrophobic as the hierarchical structures created by nanostructures on microstructures. The acid oxidation using an acid mixture of nitric and sulfuric acid can readily change the surface of SWNTs grown on textured Si surfaces from superhydrophobic to superhydrophilic. And the reduction by heating in NH3 environment at an elevated temperature can reverse the surface state from superhydrophilic to superhydrophobic. In conclusion, the wettability of SWNTs are controlled by the oxidation and reduction process, significantly facilitate the fabrication and application of composites containing CNTs.

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