Synthesis and Characterization of Niobium-doped TiO2 Nanotube Arrays by Anodization of Ti-20Nb Alloys

被引：31

作者：

Xu, Zhengchao ^{[1
]}

Li, Qi ^{[1
]}

Gao, Shian ^{[1
]}

Shang, Jianku ^{[1
,2
]}

机构：

[1] Chinese Acad Sci, Mat Ctr Water Purificat, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Peoples R China

[2] Univ Illinois, Dept Mat Sci & Engn, Urbana, IL 61801 USA

来源：

JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY | 2012年 / 28卷 / 10期

基金：

中国国家自然科学基金;

关键词：

TiO2; Nanotube arrays; Anodization; Doping; PHOTOCATALYTIC ACTIVITY; ANATASE TIO2; TITANIUM-DIOXIDE; LIGHT; RECOMBINATION; NANOPARTICLES; FILMS;

D O I：

10.1016/S1005-0302(12)60144-3

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Well crystallized niobium-doped TiO2 nanotube arrays (TiNbO-NT) were successfully synthesized via the anodization of titanium/niobium alloy sheets, followed with a heat treatment at 550 degrees C for 2 h. Morphology analysis results demonstrated that both the titanium/niobium alloy microstructure and the dissolution strength of electrolyte played major roles in the formation of nanotube structure. A single-phase microstructure was more favorable to the formation of uniform nanotube arrays, while modulating the dissolution strength of electrolyte was required to obtain nanotube arrays from the alloys with multi-phase microstructures. X-ray diffraction (XRD) and X-ray photoelectron (XPS) analysis results clearly demonstrated that niobium dopants (Nb5+) were successfully doped into TiO2 anatase lattice by substituting Ti4+ in this approach.

引用

收藏

页码：865 / 870

页数：6

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