Figure 1From: Hydrothermal synthesis of 3D hollow porous Fe3O4 microspheres towards catalytic removal of organic pollutantsXRD pattern (a) and N 2 adsorption-desorption isotherms (b) of the as-prepared 3D hollow porous Fe 3 O 4 microspheres. The inset (in b) is the pore size distribution curve.Back to article page