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Keywords:

  • nanostructures;
  • photocatalysts;
  • reactive facets;
  • surface chemistry;
  • titanium
Thumbnail image of graphical abstract

Mother sphere superior: Hierarchical TiO2 microspheres (see figure) produced from anatase TiO2 nanosheets with dominant {001} facets (up to 83 %) were synthesized by template- and surfactant-free methods. Compared with Degussa P25, these microspheres possess a superior photocatalytic activity, owing to the high percentage exposure of reactive {001} facets and the porous network of the nanosheets.