Synthesized and characterization of open-ended Ta3N5 nanotube arrays for the preparation of growth template

In this article, a two-step anodization method was applied to tantalum foils to grow compact open-ended tantalum oxide nanotube arrays, which were subsequently subject to high temperature nitridation. The nitride nanotube arrays were characterized with SEM, XRD, and electrochemical tests including I...

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Bibliographic Details
Published inIOP conference series. Earth and environmental science Vol. 632; no. 5
Main Authors Hu, Yanling, Yuan, Ronghuo, Zhang, Zenghui, Zheng, Yufan, Ma, Tongmei
Format Journal Article
LanguageEnglish
Published Bristol IOP Publishing 01.01.2021
Subjects
Anodizing
Arrays
Carrier density
Catalysts
Electrochemistry
Foils
High temperature
Nanomaterials
Nanotechnology
Nanotubes
Tantalum
Tantalum nitrides
Tantalum oxides
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Summary:In this article, a two-step anodization method was applied to tantalum foils to grow compact open-ended tantalum oxide nanotube arrays, which were subsequently subject to high temperature nitridation. The nitride nanotube arrays were characterized with SEM, XRD, and electrochemical tests including I-V and Mott-Schottky analysis. The phases in the nitrided nanotube arrays may consist of Ta3N5, TaN, TaN0.5, N-Ta2O, or the amorphous oxide. The duration of the second anodization step was found to play a key role on the microstructure and the carrier density of the nitride nanotube arrays. It is found that the duration of the second anodization has to be more than 20 min to obtain a specimen with a top layer of Ta3N5, which can work as a photo electrode or a template for the growth of photo catalyst nanomaterials.
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ISSN:1755-1307
1755-1315
DOI:10.1088/1755-1315/632/5/052004