Preparation of Cu₂O/TiO₂ composite porous carbon microspheres as efficient visible light-responsive photocatalysts

In this paper, Cu₂O/TiO₂ composite porous microspheres were prepared in the absence of templates and additives by a simple hydrothermal method using Cu(CH₃COO)₂·H₂O and (NH₄)₂TiF₆ as precursors. The photocatalytic activity of the samples was evaluated by the photo-degradation of methylene blue (MB) aqueous solution under the visible-light illumination. To the best of our knowledge, this is the first report on the preparation and photocatalytic activity of Cu₂O/TiO₂ composite porous microspheres with a template-free hydrothermal method. This work may provide new insights into preparing other inorganic porous microspheres.