Inhibition of pyrite corrosion and photocorrosion by MEKF-R modified carbazoles

Belkis Ustamehmetoǧlu; Esma Sezer; Nilgün Kizilcan; Pelin Yazici; Şebnem Tayyar; A. Sezai Saraç

doi:10.1016/j.porgcoat.2012.10.003

Inhibition of pyrite corrosion and photocorrosion by MEKF-R modified carbazoles

Belkis Ustamehmetoǧlu^*, Esma Sezer, Nilgün Kizilcan, Pelin Yazici, Şebnem Tayyar, A. Sezai Saraç

^*Corresponding author for this work

Department of Chemistry

Istanbul Technical University

Research output: Contribution to journal › Article › peer-review

11 Citations (Scopus)

Abstract

In this study natural iron sulfide (FeS₂) surface was coated by films of poly(N-vinylcarbazole) (PNVCz), poly(N-vinylcarbazole methylethylketoneformaldehyde resin) (P[NVCz-MEKF-R]), carbazole methylethylketone formaldehyde resin (Cz-MEKFR) and poly(carbazole methyl ethylketone formaldehyde resin) (P[Cz-MEKFR]). The corrosion, photocorrosion, and photoactivity characteristics of coated electrodes were investigated in potassium iodide/iodide (KI/I₂) redox electrolyte. The inhibition effect and photoactivity of Cz-MEKF-R, P[Cz-MEKF-R] P[NVCz-MEKFR] and PNVCz homopolymer coatings were compared. Coating performance was tested by polarization and electrochemical impedance (EIS) measurements. The photopotential and photocurrent values of bare and coated pyrite electrodes were obtained under illuminated conditions. The inhibition efficiencies were calculated from corrosion currents obtained by Tafel extrapolation from polarization curves.

Original language	English
Pages (from-to)	533-540
Number of pages	8
Journal	Progress in Organic Coatings
Volume	76
Issue number	4
DOIs	https://doi.org/10.1016/j.porgcoat.2012.10.003
Publication status	Published - Apr 2013

Keywords

Electrochemical impedance (EIS)
Natural iron sulfide (FeS)
Photoactivity
Photocorrosion
Poly(carbazole methyl ethylketone formaldehyde resin)
Poly(N-vinylcarbazole methyl ethylketoneformaldehyde resin)

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10.1016/j.porgcoat.2012.10.003

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title = "Inhibition of pyrite corrosion and photocorrosion by MEKF-R modified carbazoles",

abstract = "In this study natural iron sulfide (FeS2) surface was coated by films of poly(N-vinylcarbazole) (PNVCz), poly(N-vinylcarbazole methylethylketoneformaldehyde resin) (P[NVCz-MEKF-R]), carbazole methylethylketone formaldehyde resin (Cz-MEKFR) and poly(carbazole methyl ethylketone formaldehyde resin) (P[Cz-MEKFR]). The corrosion, photocorrosion, and photoactivity characteristics of coated electrodes were investigated in potassium iodide/iodide (KI/I2) redox electrolyte. The inhibition effect and photoactivity of Cz-MEKF-R, P[Cz-MEKF-R] P[NVCz-MEKFR] and PNVCz homopolymer coatings were compared. Coating performance was tested by polarization and electrochemical impedance (EIS) measurements. The photopotential and photocurrent values of bare and coated pyrite electrodes were obtained under illuminated conditions. The inhibition efficiencies were calculated from corrosion currents obtained by Tafel extrapolation from polarization curves.",

keywords = "Electrochemical impedance (EIS), Natural iron sulfide (FeS), Photoactivity, Photocorrosion, Poly(carbazole methyl ethylketone formaldehyde resin), Poly(N-vinylcarbazole methyl ethylketoneformaldehyde resin)",

author = "Belkis Ustamehmetoǧlu and Esma Sezer and Nilg{\"u}n Kizilcan and Pelin Yazici and {\c S}ebnem Tayyar and Sara{\c c}, {A. Sezai}",

year = "2013",

month = apr,

doi = "10.1016/j.porgcoat.2012.10.003",

language = "English",

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AU - Ustamehmetoǧlu, Belkis

AU - Sezer, Esma

AU - Kizilcan, Nilgün

AU - Yazici, Pelin

AU - Tayyar, Şebnem

AU - Saraç, A. Sezai

PY - 2013/4

Y1 - 2013/4

N2 - In this study natural iron sulfide (FeS2) surface was coated by films of poly(N-vinylcarbazole) (PNVCz), poly(N-vinylcarbazole methylethylketoneformaldehyde resin) (P[NVCz-MEKF-R]), carbazole methylethylketone formaldehyde resin (Cz-MEKFR) and poly(carbazole methyl ethylketone formaldehyde resin) (P[Cz-MEKFR]). The corrosion, photocorrosion, and photoactivity characteristics of coated electrodes were investigated in potassium iodide/iodide (KI/I2) redox electrolyte. The inhibition effect and photoactivity of Cz-MEKF-R, P[Cz-MEKF-R] P[NVCz-MEKFR] and PNVCz homopolymer coatings were compared. Coating performance was tested by polarization and electrochemical impedance (EIS) measurements. The photopotential and photocurrent values of bare and coated pyrite electrodes were obtained under illuminated conditions. The inhibition efficiencies were calculated from corrosion currents obtained by Tafel extrapolation from polarization curves.

AB - In this study natural iron sulfide (FeS2) surface was coated by films of poly(N-vinylcarbazole) (PNVCz), poly(N-vinylcarbazole methylethylketoneformaldehyde resin) (P[NVCz-MEKF-R]), carbazole methylethylketone formaldehyde resin (Cz-MEKFR) and poly(carbazole methyl ethylketone formaldehyde resin) (P[Cz-MEKFR]). The corrosion, photocorrosion, and photoactivity characteristics of coated electrodes were investigated in potassium iodide/iodide (KI/I2) redox electrolyte. The inhibition effect and photoactivity of Cz-MEKF-R, P[Cz-MEKF-R] P[NVCz-MEKFR] and PNVCz homopolymer coatings were compared. Coating performance was tested by polarization and electrochemical impedance (EIS) measurements. The photopotential and photocurrent values of bare and coated pyrite electrodes were obtained under illuminated conditions. The inhibition efficiencies were calculated from corrosion currents obtained by Tafel extrapolation from polarization curves.

KW - Electrochemical impedance (EIS)

KW - Natural iron sulfide (FeS)

KW - Photoactivity

KW - Photocorrosion

KW - Poly(carbazole methyl ethylketone formaldehyde resin)

KW - Poly(N-vinylcarbazole methyl ethylketoneformaldehyde resin)

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DO - 10.1016/j.porgcoat.2012.10.003

M3 - Article

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SP - 533

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JO - Progress in Organic Coatings

JF - Progress in Organic Coatings

IS - 4

ER -

Inhibition of pyrite corrosion and photocorrosion by MEKF-R modified carbazoles

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Keywords

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