A facile hydrothermal method was employed to synthesize porous alpha-Fe2O3@SnO2 heterostructure nanotubes. The morphologies and structures of the as-prepared samples were characterized by field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), X-ray powder diffraction (XRD), and N-2 adsorption-desorption techniques. The hollow alpha-Fe2O3 nanotubes with outer diameters of about 90 nm were uniformly coated by a 10 nm thick layer of SnO2 nanoparticles, demonstrating apparent heterostructures. The alpha-Fe2O3@SnO2 heterostructure nanotubes were applied to cons...
