Polymeric carboxylic acid functionalized ionic liquid as a green corrosion inhibitor: Insights into the synergistic effect with KI

被引：7

作者：

Sun, Youqing ^{[1
]}

Wang, Yuerong ^{[2
]}

Liu, Dan ^{[1
,2
,4
]}

Pan, Shiguang ^{[2
]}

Ma, Aijing ^{[3
]}

Kuvarega, Alex T. ^{[4
]}

Mamba, Bhekie B. ^{[4
]}

Gui, Jianzhou ^{[3
,4
]}

机构：

[1] Tiangong Univ, Sch Mat Sci & Engn, Tianjin 300387, Peoples R China

[2] Tiangong Univ, Sch Chem, Tianjin 300387, Peoples R China

[3] Tiangong Univ, Sch Chem Engn & Technol, State Key Lab Separat Membranes & Membrane Proc, Tianjin Key Lab Green Chem Technol & Proc Engn, Tianjin 300387, Peoples R China

[4] Univ South Africa, Inst Nanotechnol & Water Sustainabil, Coll Sci Engn & Technol, ZA-1709 Johannesburg, South Africa

来源：

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS | 2024年 / 702卷

基金：

中国国家自然科学基金;

关键词：

Corrosion inhibitor; Poly(ionic liquid); Carboxyl functionalization; Synergistic effect; Carbon steel corrosion; CARBON-STEEL; MILD-STEEL; IODIDE-ION; COPPER;

D O I：

10.1016/j.colsurfa.2024.135157

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A poly ionic liquid, poly(3-(3-carboxypropyl)-1-vinyl-1H-imidazolium chloride) (P[CPVI]Cl), was synthesized and demonstrated to be effective as an inhibitor for carbon steel corrosion. The structure of P[CPVI]Cl contains a carboxylic acid group and N- heterocyclic ring, which serve as multiple adsorption sites and facilitate the formation of multi-anchored adsorption. The P[CPVI]Cl can be adsorbed onto the metal surface, resulting in a larger surface area coverage, leading to a higher inhibition efficiency of 88.27 %. The synergistic effect of P[CPVI]Cl and KI further enhanced inhibition efficiency up to 98.83 %. Various surface characterizations and molecular simulations have been performed, and a possible corrosion inhibitor mechanism has been proposed.

引用

页数：15

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