Anodic dissolution of spongy titanium in ethanol solution for preparation of nano-sized TiO2 powder

被引：33

作者：

Zhou, XF ^{[1
]}

Chu, DB

Lin, CJ

机构：

[1] Anhui Normal Univ, Inst Organ Chem, Wuhan 241000, Peoples R China

[2] Xiamen Univ, Dept Chem, Xiamen 361005, Peoples R China

来源：

ELECTROCHIMICA ACTA | 2002年 / 47卷 / 17期

关键词：

spongy titanium; anodic dissolution in ethanol solution; nano-sized TiO2 powder; current density; temperature;

D O I：

10.1016/S0013-4686(02)00142-1

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Nano-sized TiO2 powder was prepared by electrochemical dissolution of spongy titanium in an ethanol solution following direct hydrolysis of the electrolyte solution. Characterization of the electrochemical product revealed that Ti(OEt)(4) was formed by anodic dissolution of spongy titanium in ethanol solution. X-ray diffraction and transmission electron microscope were, respectively, used to investigate the structure of TiO2. This study showed that nano-sized TiO2 prepared by this method has a structural and thermal stability with a narrow size distribution of 5-10 nm. The optimum electrochemical operating conditions established were a temperature of 333-343 K, current density of 400 A m(-2) and faradaic efficiency of 86%. Experiments showed that this process might be recommended as a promising technique for synthesis of nano-sized powder. (C) 2002 Elsevier Science Ltd. All rights reserved.

引用

页码：2769 / 2773

页数：5

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