A Calcination‐Free Sol‐Gel Method to Prepare TiO₂‐Based Hybrid Semiconductors for Enhanced Visible Light‐Driven Hydrogen Production

The cover picture compares the structure of calcined (left) and non-calcined (right) rutile TiO2 doped with a molecule NA. The calcination process enlarges the pores in TiO2, reducing its surface area and hydrogen production efficiency under visible light. The “sad face” symbolizes the damaged pore structure. Conversely, doping TiO2 with NA without high-temperature calcination forms a covalent bond, resulting in smaller pores, larger surface area, and improved hydrogen production efficiency. The “smiley face” represents the structurally intact TiO2 hybrid material. More information can be found in the Research Article by Jianwei Li, Chunman Jia, and co-workers.