Homojunction and defect synergy-mediated electron-hole separation for solar-driven mesoporous rutile/anatase TiO₂ microsphere photocatalysts.

ABSTRACT: The photocatalytic hydrogen evolution of TiO₂ is deemed to be one of the most promising ways of converting solar energy to chemical energy; however, it is a challenge to improve the photo-generated charge separation efficiency and enhance solar utilization. Herein, black mesoporous rutile/anatase TiO₂ microspheres with a homojunction and surface defects have been successfully synthesized by an evaporation-induced self-assembly, solvothermal and high-temperature surface hydrogenation method. The H500-BMR/ATM (HX-BMR/ATM, where X means the different hydrogen calcination temperatures) materials not only possess a mesoporous structure and relatively high specific surface area of 39.2 m² g^-1, but also have a narrow bandgap (∼2.87 eV), wh

SUBMITTER: Li H 

PROVIDER: S-EPMC9061422 | biostudies-literature | 2019 Mar

REPOSITORIES: biostudies-literature