Abstract
Cocrystalline TiO2 nanoblossoms having enhanced photocatalytic activities have been facilely grown via a one-step solvothermal process on titanium foil in mixed solvents of water and ethylene glycol. By varying the volume ratio of two solvents, we have controlled the morphological, the structural, and the optical properties of TiO2 nanoblossoms. Our prepared TiO2 nanoblossoms have been found to have both the anatase and the rutile crystal structures acting as nanoscale p–n junctions, which help to enhance catalytic performances via forming inner electric fields. In particular, TiO2 nanoblossoms grown in the 1:1 volume mixture of water and ethylene glycol have been found to have the best-defined nanoscale p–n junctions, showing the best photocatalytic activity consequentially.
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