Multiscale electrochemical analysis of the corrosion control of bronze in simulated acid rain by horse-chestnut (Aesculus hippocastanum L.) extract as green inhibitor

被引：46

作者：

Varvara, Simona ^{[1
]}

Caniglia, Giada ^{[2
,6
]}

Izquierdo, Javier ^{[2
,3
]}

Bostan, Roxana ^{[1
]}

Gaina, Luiza ^{[4
]}

Bobis, Otilia ^{[5
]}

Souto, Ricardo M. ^{[2
,3
]}

机构：

[1] 1 Decembrie 1918 Univ Atha Julia, Dept Exact Sci & Engn, 15-17 Unirii St, Alba Julia 510009, Romania

[2] Univ La Laguna, Dept Chem, POB 456, E-38200 San Cristobal la Laguna, Tenerife, Spain

[3] Univ La Laguna, Inst Mat & Nanoteclutol, POB 456, E-38200 San Cristobal la Laguna, Tenerife, Spain

[4] Babes Bolyai Univ, Dept Organ Chem, 11 Arany Janos St, Cluj Napoca, Romania

[5] Univ Agr Sci & Vet Med, Apiculture & Sericiculture Dept, Life Sci Inst, 3-5 Manastur St, Cluj Napoca, Romania

[6] Univ Ulm, Inst Analyt & Bioanalyt Chem, D-89081 Ulm, Germany

来源：

CORROSION SCIENCE | 2020年 / 165卷

关键词：

Bronze; EIS; Scanning electrochemical microscopy; Potentiodynamic polarization; Adsorption isotherms; Corrosion inhibition; COPPER CORROSION; THIADIAZOLE DERIVATIVES; PATINA FORMATION; ALLOY CORROSION; ALUMINUM BRONZE; CHLORIDE MEDIA; ADSORPTION; MICROSCOPY; PROTECTION; BRASS;

D O I：

10.1016/j.corsci.2019.108381

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Horse-chestnut ethanolic extract was tested as potential corrosion inhibitor of bronze in simulated acid rain. The extract was analysed by FTIR, GC-MS and HPLC-PDA, and its anti-corrosion behaviour studied using a multiscale electrochemical approach by polarization curves, EIS and scanning electrochemical microscopy, along with SEM-EDS. 94 % inhibition efficiency was attained by developing a surface physisorbed film. A novel methodology for kinetic evaluation of dynamic adsorption of inhibitive species on metal surface is proposed using SECM, achieving good agreement with results from conventional electrochemical techniques. Excellent adsorption-desorption kinetic constants (k(a) = 0.102 s(-1) mol(-1) L; k(d) = 3.33 x 10(-5) s(-1)) were determined.

引用

页数：19

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