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학술발표회초록보기

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제114회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Soft chemical route to band gap engineering of layered perovskite via electron beam irradiation

등록일
2014년 8월 28일 16시 58분 14초
접수번호
1344
발표코드
MAT.P-1158 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
10월 15일 (수요일) 16:00~19:00
발표형식
포스터
발표분야
재료화학
저자 및
공동저자
이원재, 백승민1,*
경북대학교 자연과학대학/화학과, Korea
1경북대학교 화학과, Korea
The transition metal oxides with perovskite phase have highly attracted research interests because of their promising application in photocatalysis. Especially layered perovskites such as Dion-Jacobson phase have wide application including photocatalytic degradation of organic pollutants. In this study, we demonstrated the intercalation of organic molecules into interlayer spaces of layered perovskites, and examined effect of electron beam irradiation. According to X-ray diffraction patterns, the basal spacing of layered perovskites was significantly increased upon the intercalation reaction. The UV-vis diffuse reflectance spectra and results of photocatalytic degradation show that the electron beam irradiation derived the change of band gap of layered perovskites, which led to the enhanced photocatalytic activities in degradation reaction of organic pollutants. The transmission electron microscopic studies indicate that the electron beam irradiated perovskites could be used new host materials with controlled band gap after exfoliation reaction. This synthetic methodology could be applicable to the fabrication of new photocatalysts with enhanced activities.

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