在TiO2等半导体将CO2催化成碳氢燃料过程中，还存在低光能吸收率及低载流子复合效率等问题。本项目拟利用金属纳米结构的局域表面等离子增强（LSPR）效应拓宽半导体吸收谱带，提高半导体对光的吸收效率，实现对CO2高效稳定的光催化作用。在二维胶体粒子阵列上制备TiO2/[Co/Pt]n/Au/TiO2曲面多层膜，加热驱动Au在TiO2中针孔的扩散过程，形成TiO2/[Co/Pt]n/Au/Au@TiO2复合材料磁性有序阵列；Au良好的导电性提高载流子的传输速度，内置磁场延长载流子复合时间，提高催化活性及效率；外加磁场调控多层膜的曲率及单元间距等，并利用SERS技术研究结构周期、材料成分比例等结构参数对LSPR耦合增强、能量传输及光催化活性影响的物理机制。

To catalyze CO2 into hydrocarbon as the clean fuel, we suffer yet some drawbacks, such as the poor visible light harvesting and the low quantum effeciencies. Our program proposes the localized surface plasmon resonance (LSPR) effect of the metal nanoparticles to broaden the absorption spectrum into the visible range, which can enhance the efficient visible absorption and realize the stable visible light-driven photocatalysis of carbon dioxide. The curved TiO2/[Co/Pt]n/Au/TiO2 multilayer films are prepared on two dimensional PS array and Au are driven into TiO2 sublayer through the pinholes during heating process which results in the formation of ordered TiO2/[Co/Pt]n/Au/Au@TiO2 array. The excellent conducting properties of Au nanostructures enhance the carriers velocity.and the in-built magnetic field help to enhance the recombination time, which finally enhance the the photocatalytic activity of semiconductors and the efficiency. The magnetic field can be applied to TiO2/[Co/Pt]n/Au/Au@TiO2 array to change the curvature and the distances between the units of the magnetic array. In addition, surface enhanced Raman scattering (SERS) is used to investigate the effects of the ordered array period, material on LSPR coupling, energy transfer and catalysis activity.