P-Incorporated TiO<sub>2</sub> Nanotubes for Methyl Orange Degradation

Abstract

Highly ordered TiO2 nanotubes were successfully prepared via a facile anodization method in ethylene glycol and water mixture electrolyte (99 vol% EG + 5 wt% NH4F). The as-anodized TiO2 nanotubes were crystallized by annealing at 400 °C for 4 hours in argon atmosphere. A series of phosphorus incorporation with different phosphorus content have been prepared by soaking TiO2 nanotubes samples in H3PO4. The photocatalytic activity of TiO2 nanotubes and P-incorporated TiO2 nanotubes were evaluated by the photodegradation of methyl orange. It was found that the photocatalytic activity of P-incorporated TiO2 nanotubes was 34% higher than TiO2 nanotubes.