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학술발표회초록보기

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  • 03월 02일 17시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

제109회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Graphene oxide as a 2-dimensional polymer

등록일
2012년 2월 16일 16시 26분 20초
접수번호
1201
발표코드
POLY1-3 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
목 09시 : 50분
발표형식
심포지엄
발표분야
고분자화학 - Current issues in environment/energy fusion technologies
저자 및
공동저자
한태희
한양대학교 유기나노공학과, Korea
Oxidative etching of graphene flakes was observed to initiate from edges and the occasional defect sites in the basal plane, leading to reduced lateral size and a small number of etch pits. In contrast, etching of highly defective graphene oxide and its reduced form resulted in rapid homogenous fracturing of the sheets into smaller pieces. Based on these observations, a slow and more controllable etching route was designed to produce nanoporous reduced graphene oxide sheets by hydrothermal steaming. The degree of etching and the concomitant porosity can be conveniently tuned by etching time. Etched graphene oxide patterns strongly support that graphene oxide sheets can be regarded as a 2-dimensiononal random block copolymer. In contrast to nonporous reduced graphene oxide annealed at the same temperature, the steamed nanoporous graphene oxide exhibited nearly two orders of magnitude increase in the sensitivity and improved recovery time when used as chemiresistor sensor platform for NO2 detection. The results underscore the efficacy of the highly distributed nanoporous network in the low temperature steam etched graphene oxide.

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