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Highly efficient polypyrrole sensitized TiO2 nanotube films for photocathodic protection of Q235 carbon steel

  • Junfeng Ren
  • , Bei Qian
  • , Jianzhong Li
  • , Zuwei Song
  • , Long Hao
  • , Jinsheng Shi
  • Qingdao Agricultural University

Research output: Contribution to journalArticlepeer-review

62 Scopus citations

Abstract

Polypyrrole (PPy) sensitized TiO2 nanotube arrays (PPy/TNAs) are fabricated via anodic oxidation and electropolymerisation method. The crystallinity, morphology, optical property and photocathodic protection performance of PPy/TNAs composites can be readily controlled by varying the electropolymerisation time. PPy acts as a photosensitizer and a “pool” to gather photoexcited electrons, and an appropriate quantity of PPy contributes to the photosensitization, heterojunction formation and electron pool effect. The PPy/TNAs film acquired at 15 min exhibits excellent visible-light response and favourable photocathodic protection for the coupled Q235 carbon steel under white-light irradiation.

Original languageEnglish
Pages (from-to)596-601
Number of pages6
JournalCorrosion Science
Volume111
DOIs
StatePublished - 1 Oct 2016
Externally publishedYes

Keywords

  • A. Carbon steel
  • A. Polymer
  • A. Titanium
  • B. Potentiostatic
  • C. Cathodic protection
  • C. Electrodeposited films

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