Corrosion behaviors and physical properties of polypyrrole-molybdate coating electropolymerized on carbon steel

Zhihao Chen; Wenzhong Yang; Bin Xu; Yangyang Guo; Yun Chen; Xiaoshuang Yin; Ying Liu

doi:10.1016/j.porgcoat.2018.05.022

Corrosion behaviors and physical properties of polypyrrole-molybdate coating electropolymerized on carbon steel

Zhihao Chen, Wenzhong Yang, Bin Xu, Yangyang Guo, Yun Chen, Xiaoshuang Yin, Ying Liu

School of Chemistry and Moleculai Engineering

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

69 Scopus citations

Abstract

Polypyrrole (PPY) and polypyrrole-molybdate (PPY-MoO₄ ²⁻) coatings have been successfully electropolymerized on carbon steel by cyclic voltammetry method in aqueous oxalic acid solutions. These coatings were characterized by FTIR, XPS, EDX, FESEM and AFM methods. It was found that the incorporation of MoO₄ ²⁻ enhanced the corrosion resistance of PPY coating and improved the physical properties, such as thermostability, wettability, adhesion and hardness. The corrosion protection performance of PPY and PPY-MoO₄ ²⁻ coated steel in 0.1 M HCl solution was investigated by electrochemical impedance spectroscopy and Tafel polarization. Moreover, molecular dynamic simulations were engaged to assess the interactions between the metal surface and complex coatings. The exceptional anti-corrosion performance of PPY-MoO₄ ²⁻ coating was associated with the complex passive film on the metal surface and the barrier effect of the coating.

Original language	English
Pages (from-to)	159-169
Number of pages	11
Journal	Progress in Organic Coatings
Volume	122
DOIs	https://doi.org/10.1016/j.porgcoat.2018.05.022
State	Published - Sep 2018

Keywords

Corrosion protection
Electropolymerization
Mechanism
Physical properties
Polypyrrole

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10.1016/j.porgcoat.2018.05.022

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title = "Corrosion behaviors and physical properties of polypyrrole-molybdate coating electropolymerized on carbon steel",

abstract = "Polypyrrole (PPY) and polypyrrole-molybdate (PPY-MoO4 2−) coatings have been successfully electropolymerized on carbon steel by cyclic voltammetry method in aqueous oxalic acid solutions. These coatings were characterized by FTIR, XPS, EDX, FESEM and AFM methods. It was found that the incorporation of MoO4 2− enhanced the corrosion resistance of PPY coating and improved the physical properties, such as thermostability, wettability, adhesion and hardness. The corrosion protection performance of PPY and PPY-MoO4 2− coated steel in 0.1 M HCl solution was investigated by electrochemical impedance spectroscopy and Tafel polarization. Moreover, molecular dynamic simulations were engaged to assess the interactions between the metal surface and complex coatings. The exceptional anti-corrosion performance of PPY-MoO4 2− coating was associated with the complex passive film on the metal surface and the barrier effect of the coating.",

keywords = "Corrosion protection, Electropolymerization, Mechanism, Physical properties, Polypyrrole",

author = "Zhihao Chen and Wenzhong Yang and Bin Xu and Yangyang Guo and Yun Chen and Xiaoshuang Yin and Ying Liu",

note = "Publisher Copyright: {\textcopyright} 2018 Elsevier B.V.",

year = "2018",

month = sep,

doi = "10.1016/j.porgcoat.2018.05.022",

language = "英语",

volume = "122",

pages = "159--169",

journal = "Progress in Organic Coatings",

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TY - JOUR

T1 - Corrosion behaviors and physical properties of polypyrrole-molybdate coating electropolymerized on carbon steel

AU - Chen, Zhihao

AU - Yang, Wenzhong

AU - Xu, Bin

AU - Guo, Yangyang

AU - Chen, Yun

AU - Yin, Xiaoshuang

AU - Liu, Ying

PY - 2018/9

Y1 - 2018/9

N2 - Polypyrrole (PPY) and polypyrrole-molybdate (PPY-MoO4 2−) coatings have been successfully electropolymerized on carbon steel by cyclic voltammetry method in aqueous oxalic acid solutions. These coatings were characterized by FTIR, XPS, EDX, FESEM and AFM methods. It was found that the incorporation of MoO4 2− enhanced the corrosion resistance of PPY coating and improved the physical properties, such as thermostability, wettability, adhesion and hardness. The corrosion protection performance of PPY and PPY-MoO4 2− coated steel in 0.1 M HCl solution was investigated by electrochemical impedance spectroscopy and Tafel polarization. Moreover, molecular dynamic simulations were engaged to assess the interactions between the metal surface and complex coatings. The exceptional anti-corrosion performance of PPY-MoO4 2− coating was associated with the complex passive film on the metal surface and the barrier effect of the coating.

AB - Polypyrrole (PPY) and polypyrrole-molybdate (PPY-MoO4 2−) coatings have been successfully electropolymerized on carbon steel by cyclic voltammetry method in aqueous oxalic acid solutions. These coatings were characterized by FTIR, XPS, EDX, FESEM and AFM methods. It was found that the incorporation of MoO4 2− enhanced the corrosion resistance of PPY coating and improved the physical properties, such as thermostability, wettability, adhesion and hardness. The corrosion protection performance of PPY and PPY-MoO4 2− coated steel in 0.1 M HCl solution was investigated by electrochemical impedance spectroscopy and Tafel polarization. Moreover, molecular dynamic simulations were engaged to assess the interactions between the metal surface and complex coatings. The exceptional anti-corrosion performance of PPY-MoO4 2− coating was associated with the complex passive film on the metal surface and the barrier effect of the coating.

KW - Corrosion protection

KW - Electropolymerization

KW - Mechanism

KW - Physical properties

KW - Polypyrrole

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U2 - 10.1016/j.porgcoat.2018.05.022

DO - 10.1016/j.porgcoat.2018.05.022

M3 - 文章

AN - SCOPUS:85047430168

SN - 0300-9440

VL - 122

SP - 159

EP - 169

JO - Progress in Organic Coatings

JF - Progress in Organic Coatings

ER -

Corrosion behaviors and physical properties of polypyrrole-molybdate coating electropolymerized on carbon steel

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Keywords

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