Preparation and Properties of Hollow TiO2 Nanospheres

Abstract

To address the issues of narrow photoresponse range, rapid carrier recombination, and difficulty in recovery associated with TiO₂ photocatalytic materials, this study employed a morphology control strategy to fabricate hollow spherical TiO₂ structures. By optimizing the microstructure of the hollow spheres, the aim was to broaden the light absorption range, increase the specific surface area, and enhance carrier separation. The photocatalytic degradation performance of the prepared material toward Rhodamine B aqueous solution-a typical organic pollutant-was experimentally evaluated, and its enhancement mechanism was explored. This work provides a feasible approach for designing efficient and easily recoverable TiO₂ photocatalysts.