Preparation of P doped TiO₂ nanotubes and its photocatalytic activity

ABSTRACT

Using tetrabutyl titanate as the titanium precursor, H₃PO₄ as the source of phosphorus, P-doped TiO₂ nanoparticles HPT were prepared by hydrothermal method. Then P-doped nanotubes ETNT and DTNT were prepared by two-step hydrothermal and calcination method by taking titanate nanotubes (TNT) TiO₂ as raw materials. The resulting materials were characterized by XRD, TEM, DRS and N₂ adsorption. The photocatalytic degradation of phenol experiments showed that the P-doped nanotubes, especially the DTNT photocatalyst exhibited higher degradation efficiency than the others. Hydroxyl radicals (•OH) have been confirmed to be the active species during the photo-catalytic oxidation reaction.

KEYWORDS:

• P-dope
• TiO₂ nanotube
• phenol
• photocatalysis

Acknowledgments

This work is supported by the National Natural Science Foundation of China (21576220), Programme of Young Scientists Innovation Team Funded by Xi'an University of Technology, Scientific Research Program Funded by Shaanxi Provincial Education Department (16JK1546) and Doctoral Start-up Fund of Xi'an University of Technology (108211309), Training Program of Innovation and Entrepreneurship for Undergraduates (306-251051570).