A facile synthesis of hollow TiO₂ photocatalyst with high amount of carbon exhibiting efficient visible-light photocatalytic performance

A facile approach was developed for the synthesis of hollow TiO2 photocatalyst with a high amount of carbon (C/TiO2). The method mainly includes the following steps: the preparation of cationic polystyrene spheres (CPSs), deposition of TiO2 precursor, and the pyrolysis of CPS in an N2 atmosphere at 450 °C (close system). The structure and morphology of C/N-TiO2 were characterized by using TEM, XRD, XPS, and UV-Vis spectroscopy. The results...