Fabrication and Photocatalytic Properties of TiO2 Nanotube Arrays Modified with Phosphate

We have prepared TiO2 nanotubes by anodization in HF or HF/H3PO4 mixed electrolyte. The morphologies and photocatalytic properties of the nanotubes were changed by electrolytes. The nanotubes prepared in HF/H3PO4 mixed electrolyte showed higher performance to decompose acetaldehyde by photocatalysis than those prepared in pure HF.