| 초록 |
Combusting fossil fuels resulted in the fast rise of CO2 concentration (the most abundant greenhouse gas) in the atmosphere, consequently causing the global warming.[1] Thus, the photocatalytic reduction of CO2 to useful C1 feedstock (i.e., CO, HCOOH, CH3OH, and CH4) is one of the important contemporary objectives in modern energy issues. We have developed efficient organic and inorganic hybrid photocatalytic system involving two/three major components that will eventually converge to a unified hybrid system to become a “dye-sensitized semiconductor hybrid” photocatalyst. Initial solar light sensitization occurs at the photosensitzer (PS) followed by electron transfer to the n-type semiconductor (n-SC), most commonly at TiO2 and finally to the site of organometallic molecular reduction catalyst (RC), facilitating the generation of electrons that can be funnelled to RC, where they will react with CO2. Several strategies were employed with the introduction of diverse types of sensitizers showing light-harvesting ability in long-wavelength region and alternate reduction catalysts ([bipyridyl]-Re(I) or Mn(I) complex). |
