Multiple layered ordered macroporous SnO₂ (mac-SnO₂) electrode is homogeneously decorated with α-Fe₂O₃ photocatalyst as a photoanode for solar energy conversion. The as-prepared mac-SnO₂ electrodes are coated with α-Fe₂O₃ via typical hydrothermal method with varied conditions to manipulate the nanostructure of α-Fe₂O₃@mac-SnO₂. In comparison to a planar substrate, smaller α-Fe₂O₃ nanocrystals are obtained on mac-SnO₂, and the size of coated α-Fe₂O₃ is contained at a certain scale disregarding the synthetic conditions. The optimized α-Fe₂O₃@mac-SnO₂ electrode exhibits a maximum photocurrent density of 1.71 mA cm^-2 at 0 V vs. V_Ag/_AgCl, and 2.41 mA cm^-2 at 1.23 V vs. V_RHE in 1 M NaOH aqueous electrolyte under visible light irradiation. The improved photocurrent density can be attributed to the greater surface area by mac-SnO₂ film, enhanced light absorption and the optimized nanostructure of α-Fe₂O₃@mac-SnO₂. In addition to the photoelectrochemical performance, the application of mac-structural materials to control the morphology of nanocrystals is also investigated.

多层有序大孔的SnO ₂（MAC-的SnO ₂）电极均匀饰的α-Fe ₂ ö ₃光催化剂作为用于太阳能转换光电阳极。所制备的MAC-的SnO ₂电极被涂覆有的α-Fe ₂ ö ₃经由典型水热法具有变化的条件来操纵的α-Fe的纳米结构₂ ö ₃ @ MAC的SnO ₂。相比于平面基板，更小的α-Fe _2个ö ₃上的MAC-的SnO获得纳米晶体₂和涂覆的尺寸的α-Fe ₂ ö ₃不论合成条件如何，均以一定比例包含。优化的α-Fe ₂ ö ₃ @ MAC的SnO ₂电极表现出的1.71毫安厘米最大光电流密度^-2 在0V与V_的Ag /_氯化银，和2.41毫安厘米^-2 在的1.23V与V _RHE在1在可见光照射下的M NaOH水溶液。改进的光电流密度可以归因于由MAC-的SnO的更大的表面面积₂膜，增强的光吸收和优化纳米结构的α-Fe ₂ ö ₃ @ MAC的SnO ₂。除了光电化学性能外，还研究了Mac结构材料在控制纳米晶体形态方面的应用。