Ag-TiO2-Ag core-shell-satellite nanowires: Facile synthesis and enhanced photocatalytic activities

作者：Li, Maoying; Wang, Ruxue; Zhong, Peng; Li, Xiukai; Huang, Zhipeng^*; Zhang, Chi

来源：Materials Letters, 2012, 80: 138-140.

DOI：10.1016/j.matlet.2012.04.109

• semiconductor
• nanocomposite
• solar energy material
• functional
• photocatalyst

Ag-TiO2-Ag core-shell-satellite nanowires were fabricated by hydrothermal growth and post-growth thermal annealing. After annealed at 600 degrees C for 8 h, core-shell Ag-TiO2 nanowires evolved into core-shell-satellite nanowires, with crystalline Ag core, shell layer of crystalline TiO2 and isolated Ag particles scattering on the shell-like satellites. The morphologies, microstructures, absorption properties, and photocatalytic activities of the resultant nanostructures were investigated. Ag-TiO2-Ag core-shell-satellite nanowires showed remarkable enhancement of photocatalytic activity, in comparison with the pristine Ag-TiO2 nanowires, and the crystalline TiO2 component in core-shell-satellite nanowires. The enhancement could be attributed to both the enhancement of photon absorptions induced by core-shell-satellite morphology and the improvement of TiO2 crystallinity induced by annealing.

• 出版日期2012-8-1
• 单位江苏大学