Improved efficiency of sol-gel synthesized mesoporous anatase nanopowders in photocatalytic degradation of metoprolol

► Mesoporous anatase nanopowders have been synthesized by sol-gel method. ► Structural and morphological properties of powders were varied by calcination time. ► Photocatalytic activity of samples was tested in degradation of MET under UV light. ► Improvement of photocatalytic efficiency was mainly influenced by pore structure.