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Fabrication of well-ordered titania nanotubes by three-step anodization in lactic acid-containing electrolytes

PENG WANG1,* , PENGFU LIU1, WEI LIU1, SHUHUA TENG1

Affiliation

  1. School of Materials Science and Engineering, China University of Mining and Technology, Xuzhou 221116, China

Abstract

Well-ordered titania nanotube arrays (TNAs) were successfully synthesized by three-step anodization in the ethylene glycol-based electrolytes containing lactic acid. The tube length of TNAs was found to be almost linearly dependent on the anodization temperature when the potential difference was kept constant at 60 V. However, their pore diameter reached a maximum at 40°C and then decreased with increasing temperature. The addition of lactic acid to the electrolytes greatly improved the morphology of TNAs, producing well-ordered nanotubes with ripples on the walls. Moreover, the XRD results showed that the crystal structure of TNAs was closely related to the annealing temperature. The growth mechanism of TNAs in the presence of lactic acid was also explained..

Keywords

Titania nanotubes, Three-step anodization, Temperature, Lactic acid.

Citation

PENG WANG, PENGFU LIU, WEI LIU, SHUHUA TENG, Fabrication of well-ordered titania nanotubes by three-step anodization in lactic acid-containing electrolytes, Optoelectronics and Advanced Materials - Rapid Communications, 10, 11-12, November–December 2016, pp.912-915 (2016).

Submitted at: May 13, 2016

Accepted at: Nov. 25, 2016