Fabrication and photoelectrochemical properties of TIO2 nanotube arrays

作者：Li, Yunlin; Li, Lili^*; Yang, Zhiguang

来源：Chimica Oggi-Chemistry Today, 2016, 34(6B): 8-12.

• TiO2 nanotube arrays
• anodization
• aspect ratio
• photoconversion efficiency
• photoelectrocatalytic activity

Highly ordered TiO2 nanotube arrays (TNAs) were synthesized by anodization of titanium sheets to investigate their synthesis method and photoelectrochemical properties. Parameters including anodization voltage and anodization time were adjusted to fabricate TNAs. Electrochemical test demonstrated that TNAs fabricated at increased anodization voltage exhibited superior photon-to-current conversion efficiency than those of TNAs fabricated under low anodizing voltages. TNAs with the largest pore size (125.03 nm) and the longest tube length (25.85 mu m) had the optimum aspect ratio and displayed a maximum photocurrent density of 0.048 mA/cm(2). Meanwhile, TNAs with optimal tube length (2.85 mu m) and aspect ratio (27) exhibited a maximum photoconversion efficiency of 0.15%. Results provided strong theory basis and technology support for further exploration in this field.

• 出版日期2016-12
• 单位周口师范学院