Korean Institute of Surface Engineering

pISSN : 1225-8024 | eISSN : 3399-8403

공학

한국표면공학회지 (51권1호 27-33)

Anodic Growth of Large Inner Diameter TiO2 Nanotubes

TiO2 나노튜브 내경 확장을 위한 양극산화 조건

이현권;오현철;이기영;
Lee, Hyeon-Kwon;Oh, Hyunchul;Lee, Kiyoung;

경북대학교 나노소재공학부;경남과학기술대학교 에너지공학과;
School of Nano & Materials Science and Engineering, Kyungpook National University;Department of Energy Engineering, Gyeongnam National University of Science and Technology(GNTECH);

DOI : 10.5695/JKISE.2018.51.1.27

Abstract

In the present work, we demonstrate the feasibility to form large inner diameter $TiO_2$ nanotubes by anodization of Ti in a HF/ethylene glycol electrolyte. In order to achieve the large inner diameter $TiO_2$ nanotubes, optimization of the anodization condition is required. We discover the key factors in the formation of large inner diameter $TiO_2$ nanotubes are concentration of water in the electrolyte, anodization temperatures, and high-applied potential. Under optimum conditions, the inner diameters of $TiO_2$ nanotubes are 379 nm. The results are approximately 3 folders larger than the general case.

Keywords

Large diameter;$TiO_2$;Nanotubes;Anodization;Ti surface treatment;