Effect of anodizing time and annealing temperature on photoelectrochemical properties of anodized TiO2 nanotube for corrosion prevention application

Misriyani, Abdul Wahid Wahab, Paulina Taba, Jarnuzi Gunlazuardi

Research output: Contribution to journalArticlepeer-review

Abstract

A study on the influence of anodizing time, annealing temperature and photoelectrochemical properties of TiO2 nanotube (TiO2 NT) has been investigated. The crystallinity was investigated using X-Ray Diffraction and the anticorrosion performance of stainless steel 304 (SS 304) coupled with TiO2 NT was evaluated using electrochemical techniques under ultraviolet exposure. The optimum anodizing condition occurs at a voltage of 20 V for 3 h. After anodizing, the TiO2 NT amorf was calcined at 500 °C to obtain anatase crystalline phase. For the photoelectrochemical property, the effects of pH and NaCl concentration on corrosion prevention have been examined. The result showed that the corrosion rate of stainless steel 304 coupled with TiO2 NT can be reduced up to 1.7 times compared to the uncoupled stainless steel 304 (3.05×10-6 to 1.78×10-6 mpy) under ultraviolet exposure by shifted the photopotential to the more negative value (-0.302 V to -0.354 V) at a pH of 8 and 3% NaCl concentration (-0.264 V to -0.291 V). In conclusion, the TiO2 NT films, which was prepared by anodization and followed by annealing can prevent the corrosion of stainless steel 304.

Original languageEnglish
Pages (from-to)219-227
Number of pages9
JournalIndonesian Journal of Chemistry
Volume17
Issue number2
DOIs
Publication statusPublished - 2017

Keywords

  • Annealing temperature
  • Anodizing time
  • Stainless steel 304
  • pH

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