Hydrothermal synthesis and characterization of single crystalline Cu-doped α-FeOOH nanowires

► We have successfully prepared Cu-doped α-FeOOH nanowires with diameters of 30-40 nm and lengths up to 1 μm under mild hydrothermal conditions. ► Nanowires are single-crystalline with an oriented growth along the [1 3 0] direction. ► The Cu-dopant content could significantly affect the morphologies and crystalline phases of products.