Microwave-assisted crystallization into anatase of amorphous TiO2 nanotubes electrochemically grown on a Ti substrate

被引：16

作者：

Aquino, Jose M. ^{[1
]}

Rocha-Filho, Romeu C. ^{[1
]}

Bocchi, Nerilso ^{[1
]}

Biaggio, Sonia R. ^{[1
]}

机构：

[1] Univ Fed Sao Carlos, Dept Quim, BR-13560970 Sao Carlos, SP, Brazil

来源：

MATERIALS LETTERS | 2014年 / 126卷

基金：

巴西圣保罗研究基金会;

关键词：

TiO2 phase transformation; TiO2 nanotube crystallization; Microwave induced phase transformation; Hybrid thermal heating; Phase transformation; Microstructure; ARRAYS; TEMPERATURE; ANODIZATION; MECHANISM;

D O I：

10.1016/j.matlet.2014.04.005

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Hybrid thermal heating induced by a microwave oven was unprecedentedly used to successfully attain rapid and facile crystallization into the anatase phase of amorphous TiO2 nanotubes grown on a Ti substrate. Amorphous TiO2 nanotubes were obtained by anodic oxidation of a Ti foil either in aqueous or organic medium. Afterward, these TiO2 nanotubes were thermally treated by hybrid heating in a common commercial microwave oven. The as-grown amorphous nanotubes were characterized by SEM and XRD, whereas the evolution of the nanotubes crystallization with thermal treatment time was followed by XRD. The crystallization into the anatase phase of the amorphous TiO2 nanotubes occurred after only 2 or 3 min of hybrid thermal treatment, which is very short and convenient as compared with several hours that are needed when conventional thermal treatment is used. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：52 / 54

页数：3

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