Adsorption and corrosion-inhibiting effect of Daayodis edulis extract on low-carbon-steel corrosion in acidic media

被引：197

作者：

Oguzie, E. E. ^{[1
]}

Enenebeaku, C. K. ^{[1
]}

Akalezi, C. O. ^{[1
]}

Okoro, S. C. ^{[1
]}

Ayuk, A. A. ^{[1
]}

Ejike, E. N. ^{[1
]}

机构：

[1] Fed Univ Technol Owerri, Electrochem & Mat Sci Res Lab, Dept Chem, Owerri, Nigeria

来源：

JOURNAL OF COLLOID AND INTERFACE SCIENCE | 2010年 / 349卷 / 01期

关键词：

Steel; Acid corrosion; Plant extracts; Molecular modeling; Adsorption; UNIVERSAL FORCE-FIELD; MILD-STEEL; SULFURIC-ACID; PLANT-EXTRACTS; MOLECULAR-STRUCTURE; ASCORBIC-ACID; HALIDE-IONS; IRON; ALUMINUM; TANNIN;

D O I：

10.1016/j.jcis.2010.05.027

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：

The inhibition of low-carbon-steel corrosion in 1 M HCl and 0.5 M H2SO4 by extracts of Dacryodis edulis (DE) was investigated using gravimetric and electrochemical techniques. DE extract was found to inhibit the uniform and localized corrosion of carbon steel in the acidic media, affecting both the cathodic and anodic partial reactions. The corrosion process was inhibited by adsorption of the extracted organic matter onto the steel surface in a concentration-dependent manner and involved both protonated and molecular species. Molecular dynamics simulations were performed to illustrate the process of adsorption of some specific components of the extract. (C) 2010 Elsevier Inc. All rights reserved.

引用

页码：283 / 292

页数：10

共 42 条

[1] Antibacterial drugs as corrosion inhibitors for corrosion of aluminium in hydrochloric solution [J].

Abdallah, M .

CORROSION SCIENCE, 2004, 46 (08) :1981-1996

[2] Inhibitive action of some plant extracts on the corrosion of steel in acidic media [J].

Abdel-Gaber, A. M. ;

Abd-El-Nabey, B. A. ;

Sidahmed, I. M. ;

El-Zayady, A. M. ;

Saadawy, M. .

CORROSION SCIENCE, 2006, 48 (09) :2765-2779

[3] Computer simulation of the corrosion inhibition of copper in acidic solution by alkyl esters of 5-carboxybenzotriazole [J].

Bartley, J ;

Huynh, N ;

Bottle, SE ;

Flitt, H ;

Notoya, T ;

Schweinsberg, DP .

CORROSION SCIENCE, 2003, 45 (01) :81-96

[4] On electrochemical techniques for interface inhibitor research [J].

Cao, C .

CORROSION SCIENCE, 1996, 38 (12) :2073-2082

[5] APPLICATION OF A UNIVERSAL FORCE-FIELD TO MAIN GROUP COMPOUNDS [J].

CASEWIT, CJ ;

COLWELL, KS ;

RAPPE, AK .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1992, 114 (25) :10046-10053

[6] APPLICATION OF A UNIVERSAL FORCE-FIELD TO ORGANIC-MOLECULES [J].

CASEWIT, CJ ;

COLWELL, KS ;

RAPPE, AK .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1992, 114 (25) :10035-10046

[7] Corrosion inhibition of mild steel by plant extract in dilute HCl medium [J].

Chauhan, L. R. ;

Gunasekaran, G. .

CORROSION SCIENCE, 2007, 49 (03) :1143-1161

[8] Experimental and theoretical study of the 3-amino-1,2,4-triazole and 2-aminothiazole corrosion inhibitors in carbon steel [J].

Cruz, J ;

Garcia-Ochoa, E ;

Castro, M .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2003, 150 (01) :B26-B35

[9] AN ALL-ELECTRON NUMERICAL-METHOD FOR SOLVING THE LOCAL DENSITY FUNCTIONAL FOR POLYATOMIC-MOLECULES [J].

DELLEY, B .

JOURNAL OF CHEMICAL PHYSICS, 1990, 92 (01) :508-517

[10] From molecules to solids with the DMol3 approach [J].

Delley, B .

JOURNAL OF CHEMICAL PHYSICS, 2000, 113 (18) :7756-7764

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