| 초록 |
As is known to all, carbon dioxide(CO2) is one of the major greenhouse gases over the past few centuries because of its generation rapidly from the combustion of fossil fuels. So, the effective utilization of CO2 is one of the important projects in order to solve this problem. Among various ways to convert CO2, photocatalytic reduction of CO2 with H2O into hydrocarbon fuels and useful chemicals is potentially a promising technology. There are various semiconductor materials have been used as photocatalysts to convert CO2 into hydrocarbon fuel. In which, TiO2 has been widely studied because of its good photoactivity, charge transfer potential, non-photocorrosion, biologically stable and non-toxic. However, the main disadvantages of TiO2 are wide band gap(3.2 eV) and immediate recombination of photogenerated electron-hole pairs. In recent years perovskite based photocatalysts have gained good response for photo reduction of CO2. In this present study, ASnO3(A = Mg, Ca, Sr, Ba) perovskite was synthesized to examine the photoreduction of CO2 with H2O. The prepared materials were characterized using XRD, BET, UV-vis spectroscopy, PL, and CO2-TPD techniques. |
