Fabrication of the SnO₂/α-Fe₂O₃ Hierarchical Heterostructure and Its Enhanced Photocatalytic Property

A necklacelike SnO2/α-Fe2O3 hierarchical heterostructure was successfully fabricated by chemical vapor deposition method, using SnO2 nanowires with the preferential growth direction of [001] direction as template. Element mapping and transmission electron microscopy analysis proved that the hierarchical heterostructure was factually an assembly constructed with a SnO2/α-Fe2O3 nanocable and a series of pure α-Fe2O3 disks, and the interfacial...