Fabrication of multilayer Nb_2O_5 nanoporous film by anodization of niobium foils  

作　　者：Guang-Zhong Li Hui-Ping Tang Wen-Yan Zhang Gang Li Lan-Lan Yu Ya-Ning Li 

机构地区：[1]State Key Laboratory of Porous Metal Materials, Northwest Institute for Nonferrous Metal Research

出　　处：《Rare Metals》2015年第2期77-80,共4页稀有金属（英文版）

基　　金：financially supported by the National Natural Science Foundation of China (Nos. 50902115 and 51104121)

摘　　要：Multilayer Nb2O5 nanoporous films were successfully synthesized on Nb surfaces by the control anodization process in ethylene glycol containing 4 vol% HF and 2 vol% H2O2 electrolyte. The nanoporous films are characterized in detail by field-emission scanning electron microscopy（FESEM）, transmission electron microscopy（TEM）, and X-ray diffraction（XRD）. The Nb_2O_5 nanoporous films have a multilayer morphology with the side wall thickness of ～5 nm, irregular pores with a diameter of ～25 nm, and a length of up to 7.39 lm, depending on the anodization time. A mechanism for the multilayer Nb2O5 nanoporous formation was also discussed. These nanoporous materials can be very useful in the fields of solar cells, gas sensors, catalysts, optical filters, and capacitors.Multilayer Nb2O5 nanoporous films were successfully synthesized on Nb surfaces by the control anodization process in ethylene glycol containing 4 vol% HF and 2 vol% H2O2 electrolyte. The nanoporous films are characterized in detail by field-emission scanning electron microscopy（FESEM）, transmission electron microscopy（TEM）, and X-ray diffraction（XRD）. The Nb_2O_5 nanoporous films have a multilayer morphology with the side wall thickness of ～5 nm, irregular pores with a diameter of ～25 nm, and a length of up to 7.39 lm, depending on the anodization time. A mechanism for the multilayer Nb2O5 nanoporous formation was also discussed. These nanoporous materials can be very useful in the fields of solar cells, gas sensors, catalysts, optical filters, and capacitors.

关 键 词：Anodization MULTILAYER Nanoporous film Growth mechanism 

分 类 号：TB383.2[一般工业技术—材料科学与工程]