Synthesis and photocatalytic performance of novel hierarchical hollow silica sphere supported TiO2 nanoparticles

The novel hierarchical hollow silica sphere supported TiO2 nanocomposite (TiO2/HHSS) has a small-ball@big-ball structure. The shell of the big-ball is composed of small-balls. The small-balls are covered with an external wall. The photocatalytic activity evaluation shows that TiO2/HHSS exhibits better photocatalytic activity than commercial Degussa P25 counterpart.