Three-dimensional assembly structure of anatase TiO2 hollow microspheres with enhanced photocatalytic performance

This is the authors' abstract. We don't add key points for this paper.

The pure anatase TiO 2 hollow microspheres are synthesized by a one-step template-free hydrothermal route. By defining temperature and time limits, we produce TiO 2 hollow microspheres with a fluoride-mediated self-transformation. The surface morphology of TiO 2 hollow microspheres was studied by SEM. The hollow microspheres have diameters of about 800 nm and are remarkably uniform. The UV-light photocatalytic activity and the stability/multifunction of TiO 2 hollow microspheres structure were evaluated by photocatalytic degradation of methylene blue and photocatalytic hydrogen evolution. The excellent photocatalytic activity is attributed to large specific surface area, more active sites, unique hollow structures, and improved light scattering.