소개글
수소생산을 위한 광촉매인 TiO2에 대한 연구와 최근 동향에 관한 발표ppt자료입니다.
목차
1. Hygrogen economy
2. Mechanism of TiO2 Photocatalytic H2 production
3. TiO2 modification techniques to enhance H2 production
4. Conclusion
본문내용
TiO2 modification techniques
Recombination rate control
Recombination of electron/hole pairs
Addition of organic compound as electron donors (sactificial reagent or hole scavengers)
Adding electron donors + photo-generated VB holes
photocatalytic electron/ hole seperation
Electron doners
-hydrocarbon or pollutant
decomposition
Addition of inorganic ion (IO3- /I-, S2-/SO32-, Ce4+/Ce3+)
IO3- : electron acceptor I- : electron donor
The combination of anatase and rutile shows a higher hydrogen production rate under the mediation I--IO3- pairs
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