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Efficient Visible-Light Photocatalysis of TiO_2-δ Nanobelts Utilizing Self-Induced Defects and Carbon Doping.

ABSTRACT: Efficient visible-light photocatalysis was realized by exploring self-induced defect states, including the abundant surface states of TiO_2-δ nanobelts synthesized through metal-organic chemical vapor deposition (MOCVD). The TiO_2-δ nanobelts exhibited two strong defect-induced absorption peaks at 2.91 and 1.92 eV, overlapping with the conduction band states so that photoexcited carriers can contribute effectively for the photocatalysis reaction. To further enhance visible-light photocatalytic activity, carbon atoms, the by-product of the MOCVD reaction, were self-doped at the judiciously determined growth conditions. The resulting visible-light photocatalysis suggests that the large surface area and consequent high concentration of the surface states of the TiO_2-δ nanobelts can be effectively utilized in a wide range of photocatalysis applications.

SUBMITTER: Seo DB

PROVIDER: S-EPMC8224642 | biostudies-literature |

REPOSITORIES: biostudies-literature

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