abs

학술발표회초록보기

초록문의 abstract@kcsnet.or.kr

결제문의 member@kcsnet.or.kr

현재 가능한 작업은 아래와 같습니다.
  • 09월 04일 13시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

TiO2 Photocatalysts for Green Technology

등록일
2009년 8월 24일 14시 13분 24초
접수번호
1575
발표코드
금9C6심 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
금 11시 : 30분
발표형식
심포지엄
발표분야
무기ㆍ환경공동 - Chemical Approaches for Green Technology
저자 및
공동저자
Tetsuro Majima
The Institute of Scientific and Industrial Research (SANKEN), Osaka University, Mihogaoka 8-1, Ibaraki, Osaka 567-0047, Japan, Korea

Titanium dioxide (TiO2) photocatalysts have been extensively studied and used for the water-splitting reaction that produces hydrogen, the degradation of organic pollutants, the surface wettability conversion, and so on. It is well-known that electron-hole pairs are generated when TiO2 is irradiated by UV photons with energy higher than the TiO2 band gap energy (3.2 eV) and these charge carriers can migrate to the TiO2 surface to initiate redox reactions with adsorbates. Generation of reactive oxygen species was also detected during the TiO2 photocatalytic reaction. In order to develop new and efficient TiO2 photocatalysts, we have investigated the TiO2 photocatalytic reaction mechanism with time-resolved transient absorption and emission spectroscopies, two-color two-laser flash photolysis and single-molecule fluorescence techniques. Particularly, the single-molecule fluorescence spectroscopy has been demonstrated to overcome the spatial heterogeneities of the nanoscale local environments and the inhomogeneous vibronic coupling between the adsorbed molecules and the rough surfaces of the semiconductors, involved in the interfacial electron-transfer processes.


상단으로