Tunable synthesis of TiO2/SrO core/shell nanowire arrays with enhanced photocatalytic activity

We report a simple method to fabricate well-aligned TiO2/SrO core/shell nanowire arrays. The core/shell structure is confirmed to have crystalline TiO2 nanowires core and amorphous SrO shell layer. The shell is composed of SrO with tunable thickness. Photocatalytic activity measurement shows that TiO2/SrO core/shell nanowire arrays outperform uncovered TiO2 nanowires. Such core/shell nanowire arrays have potential applications for photovoltaic devices and as high performance photocatalyst.

TiO2 nanowires with tunable SrO shell layer are easily fabricated. The core/shell structure can enhance the photocatalytic activity of TiO2 nanowires and restrict the recombination of the electrons/holes.Figure optionsDownload as PowerPoint slideHighlights
► A facile method to fabricate TiO2/SrO core-shell nanowire array is reported.
► The thickness of SrO shell layer can be tunable by adjusting the dipping time.
► TiO2/SrO core/shell nanowires shows enhanced photocatalytic activity.