A facile one-step preparation of hierarchically-structured TiO2 nanotube array photoanodes with enhanced photocatalytic activity

Hierarchically structured TiO2 (HST) films composed of top porous nanoparticle layer and underneath nanotube array layer are obtained by an anodization method on fluorine doped tin oxide surfaces. Compared with the TiO2 nanotube arrays photoanode on Ti substrate, the HST photoanode exhibits a higher photoelectrocatalytic activity towards the oxidation of water and organics (e.g., glucose).

Hierarchically structured TiO2 (HST) films are obtained by an anodization method on floride doped tin oxide surfaces, which exhibit a higher photoelectrocatalytic activity towards the oxidation of water and organics (e.g., glucose).Figure optionsDownload as PowerPoint slideHighlights
► Hierarchically structured TiO2 (HST) films are successfully fabricated by a one-step anodization method.
► The HST photoanode exhibits enhanced photoelectrocatalytic activity towards the oxidation of water and glucose.
► Electron pathways are well connected between the porous nanoparticle layer and the TiO2 nanotube arrays layer.