NDLI: Influence of anodizing voltage mode on the nanostructure of TiO2 nanotubes

Content Provider	Springer Nature Link
Author	Gui, Qunfang Yu, Dongliang Zhang, Shaoyu Xiao, Huapeng Yang, Chunyan Song, Ye Zhu, Xufei
Copyright Year	2013
Abstract	The nanostructure of self-ordered porous anodic TiO2 nanotubes (PATNTs) has extraordinary influence on their physical and chemical properties. For this reason, extensive attention has been paid on pulse anodization to regulate the nanostructure of PATNT. However, the relationships between the nanostructures and current curves still remain unclear. Based on the traditional potentiostatic and pulse anodizations, five different modes (i.e., potentiostatic, pulse, triangle wave, decrease, and increase step by step) of applied voltage and their influences on the nanostructures of PATNT have been investigated in detail. The growing rates of the nanotubes anodized under five different modes were compared for the first time. The results show that the growing rate of pulse voltage anodization is the fastest, reaching 116.4 nm min−1. The slowest is triangle wave voltage anodization, only 59.3 nm min−1. When the applied voltage decreases step-by-step, branched nanotubes can be formed in the bottom of PATNT. Yet, when the applied voltage increases step-by-step, triple-layer nanotubes with different diameters are formed, and the forming mechanism of this special nanostructure is discussed. The present results may be helpful to understand the mechanism of PATNT and facilitate the assembling diverse nanostructures for extensive applications in photocatalysis, dye-sensitized solar cells, and biomedical devices.
Starting Page	141
Ending Page	148
Page Count	8
File Format	PDF
ISSN	14328488
Journal	Journal of Solid State Electrochemistry
Volume Number	18
Issue Number	1
e-ISSN	14330768
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2013-09-15
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	TiO2 nanotube Anodization mode Nanostructure Electronic current Physical Chemistry Electrochemistry Energy Storage Characterization and Evaluation of Materials Analytical Chemistry Condensed Matter Physics
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Materials Science Electrical and Electronic Engineering Electrochemistry

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