Carbon-doped Titania Hollow Spheres with Tunable Hierarchical Macroporous Channel and Enhanced Visible Light-induced Photocatalytic Activity
Carbon-doped titania hollow spheres (THS) with hierarchical macroporous channel structure were prepared by using carbon spheres as both template and the source of carbon doping. The resultant THS interconnected with each other via the smaller pores to form hierarchical macroporous channel structure, and a plentiful mesopores formed in the macropore walls. Furthermore, the size of macroporous channel and the thickness of macropore walls can be systematically tuned by adjusting synthesis parameters. The unique hierarchical macroporous channel structure was confirmed to dramatically enhance the photocatalytic performance of THS.
