Sol-gel Template Synthesis and Liquid CO 2 Developed TiO 2 /CdS Composite Nanowire Arrays

TiO 2 /CdS composite nanowire (∼ 200 nm diameter and ∼ 50 μm length) arrays were successfully prepared by the sol-gel template method. An anticipated good nanowire arrays was obtained by using liquid or supercritical CO 2 to develop the target materials in purification process. The morphology, crystallinity, and composition of the product was characterized by SEM, XRD, and EDX.