Ti-MOF Derived N-Doped TiO₂ Nanostructure as Visible-light-driven Photocatalyst

Abstract

Nanostructured N-doped TiO₂ photocatalyst has been prepared via a new approach from Ti-based MOF[NH₂-MIL-125(Ti)] precursor. The success of N doping enhances light absorption and narrows the bandgap. Moreover, the as-prepared nanostructure is constructed with tiny nanoparticles and resembles a pie-like morphology inherited from the MOF, which accelerates electron transfer. Hence, as a photocatalyst for the degradation of methylene blue(MB) under visible light irradiation, the N-doped TiO₂(N-TiO₂) nanostructure shows higher photocatalytic activity with a reaction rate constant of 0.018 min⁻¹ than that of the TiO₂-P25 and TiO₂ under the visible light.

Keywords

TiO₂ / Metal-organic framework / Photo-degradation / N doped / Visible-light photocatalysis

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