Structural Effects of Nanotubes, Nanowires, and Nanoporous Ti/TiO2 Electrodes on Photoelectrocatalytic Oxidation of 4,4-Oxydianiline

被引：15

作者：

Cardoso, Juliano Carvalho ^{[1
]}

Boldrin Zanoni, Maria Valnice ^{[1
]}

机构：

[1] Univ Estadual Paulista, UNESP, Inst Quim, Dept Quim Analit, Araraquara, SP, Brazil

来源：

SEPARATION SCIENCE AND TECHNOLOGY | 2010年 / 45卷 / 11期

基金：

巴西圣保罗研究基金会;

关键词：

anodic oxidation; nanoporous electrode; nanowires film; TiO2 nanotubes array; ANODIC TIO2 NANOTUBES; MU-M; TITANIUM; ARRAYS; DEGRADATION; FILMS; CRYSTALLIZATION; GROWTH; DYES;

D O I：

10.1080/01496395.2010.487721

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The present work illustrates the effect of electrolyte composition on the self-organized TiO2 nanotube arrays electrode preparation. The influence of structural and surface morphology of the TiO2 nanotube-like anode on their photoactivity and photoelectrocatalytic performance was also investigated. TiO2 nanotubular array electrodes are grown by anodization of Ti foil in 0.25wt % NH4F/glycerol/water, but nanowires can be obtained in 4% HF-DMSO as supporting electrolyte, even when both are subjected to electrochemical anodization at 30V during 50 h. The morphological characteristics are analyzed by X-ray diffraction (XRD) and field emission scanning electron microscope (FEG-SEM). The electrodes were successfully applied in photoelectrocatalytic oxidation of 4,4'-oxydianiline (ODAN) in aqueous solution, as a model of a harmful pollutant. Complete removal of the aromatic amine was obtained after 3 hours of photoelectrocatalytic treatment on nanotubular arrays electrodes.

引用

页码：1628 / 1636

页数：9

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