| 초록 |
In this study, FeS was chosen as the photocatalyst to compare the effects of Fe2O3 and iron oxides and sulfides on absorption in the visible region. In addition, by chemically combining Fe2O3 and FeS, synergy between the two catalysts was confirmed, and a high-efficiency catalyst was prepared by adding a small amount of Pt, which has excellent photoelectron trapping power. The synthesized catalyst showed increased charge separation efficiency in Photocurrent due to the self-redox properties of a small amount of Pt2+ present between Fe2O3 and FeS, and showed low photoluminescence. In addition, when electrons in VB of Fe2O3 under visible light are excited to CB and move to VB of p-type FeS, the SPR effect of Pt NP mounted on n-type Fe2O3 particles and the electron absorption ability of Pt NP mounted on p-type FeS particles are affected. As a result, the photoactivity of the composite catalyst loaded with Pt was increased by about 5 times compared to the single catalyst. |
