A Study on Doped Heterojunctions in TiO₂ Nanotubes: An Efficient Photocatalyst for Solar Water Splitting.

ABSTRACT: The two important factors that affect sunlight assisted water splitting ability of TiO₂ are its charge recombination and large band gap. We report the first demonstration of nitrogen doped triphase (anatase-rutile-brookite) TiO₂ nanotubes as sun light active photocatalyst for water splitting with high quantum efficiency. Nitrogen doped triphase TiO₂ nanotubes, corresponding to different nitrogen concentrations, are synthesized electrochemically. Increase in nitrogen concentration in triphase TiO₂ nanotubes is found to induce brookite to anatase phase transformation. The variation in density of intra-band states (Ti³⁺ and N 2p states) with increase in nitrogen doping are found to be critical in tuning the photocatalytic activity of TiO<

SUBMITTER: Preethi LK 

PROVIDER: S-EPMC5662732 | biostudies-literature | 2017 Oct

REPOSITORIES: biostudies-literature