Radial heteromesocrystals consisting of anisotropic SnO₂(head)-TiO₂(tail) nanorods with heteroepitaxial junction were synthesized by a hydrothermal reaction using SnO₂ nanocrystals as the seeds. The heteromesocrystals exhibit photocatalytic activity for aerobic partial oxidation of ethanol to acetaldehyde much higher than radial TiO₂ homomesocrystals. The striking photocatalytic activity of the former can stem from efficient light harvesting by multiple light scattering, effective charge separation by the one-directional electron transport through the TiO₂ NR followed by the subsequent smooth interfacial electron transfer to SnO₂, and electrocatalytic activity of SnO₂ for two-electron oxygen reduction reaction.

以SnO ₂纳米晶为晶种，通过水热反应合成了由异质外延结的各向异性SnO ₂（头部）-TiO ₂（尾）纳米棒组成的径向异介晶。杂介晶对乙醇的好氧部分氧化为乙醛的光催化活性远高于放射状TiO _2均介晶。前者具有惊人的光催化活性，其源于通过多次光散射进行的有效光收集，通过TiO ₂ NR的单向电子传输以及随后的顺畅界面电子转移至SnO ₂以及对SnO的电催化活性进行的有效电荷分离。_2个 用于两电子氧还原反应。