Figure 2From: Bimetallic core/shell nanoparticle-decorated 3D urchin-like hierarchical TiO2 nanostructures with magneto-responsive and decolorization characteristics SEM image (a), TEM images (b, c), and EDX spectra (d) of the hierarchical Co/TiO 2 nanostructures. Inset in (d) shows the response of Co/TiO2 to a magnet. (Scale bar = 1 μm for (a), scale bar = 500 nm for (b), scale bar = 100 nm for (c)).Back to article page