Corrosion inhibition and photoactivity behavior of N-substituted polycarbazole-coated natural pyrite electrode
Conductive films of poly (N-vinylcarbazole) (PVCz) and polycarbazole (PCz) were coated electrochemically on a natural iron sulfide (FeS{sub 2}) surface. The corrosion, photocorrosion, and photoactivity characteristics of coated electrodes were investigated in potassium iodide/iodide (Kl/I{sub 2}) redox electrolyte. However, PVCz was obtained by oxidative polymerization of N-vinylcarbazole (NVCz) by ceric ammonium nitrate (CAN) and showed photoconductivity also was deposited on the natural FeS{sub 2} surface chemically from toluene/cyclohegzanone solution, and the electrode was tested for photoactivity. Electrochemical coating inhibited corrosion and photocorrosion of FeS{sub 2} causing some decrease in photoactivity, while chemical coating of thin, transparent PVCz on the surface enhanced the photoactivity and inhibited the corrosion and photocorrosion.
- Research Organization:
- Istanbul Technical Univ. (TR)
- OSTI ID:
- 20013148
- Journal Information:
- Corrosion (Houston), Vol. 55, Issue 7; Other Information: PBD: Jul 1999; ISSN 0010-9312
- Country of Publication:
- United States
- Language:
- English
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