Corrosion Inhibition of Steel by Various Parts of Rotula Aquatica Plant Extracts in H2SO4 Solutions

被引：20

作者：

Patel, Niketan S. ^{[1
]}

Hadlicka, Jiri ^{[1
]}

Beranek, Pavel ^{[1
]}

Salghi, Rachid ^{[1
]}

Bouya, Houceine ^{[2
]}

Ismat, Hassan A. ^{[3
]}

Hammouti, Belkheir ^{[4
]}

机构：

[1] Inst Chem Technol, Dept Chem Engn, Tech 5, Prague 6, Czech Republic

[2] Univ Ibn Zohr, ENSA, Equipe Genie Environm & Biotechnol, Agadir, Morocco

[3] King Khalid Univ, Coll Sci, Dept Chem, Abha, Saudi Arabia

[4] Univ Mohammed First, Fac Sci, LCAE URAC18, Oujda, Morocco

来源：

PORTUGALIAE ELECTROCHIMICA ACTA | 2014年 / 32卷 / 06期

关键词：

Rotula aquatic; corrosion inhibition; mild steel;

D O I：

10.4152/pea.201406395

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

The corrosion inhibition and adsorption of ethanol extracts of leaves (LV), stems (ST) and roots (RT) of Rotula aquatica plant for mild steel in H2SO4 solutions were investigated using conventional weight loss, gasometric techniques, electrochemical polarizations and electrochemical impedance spectroscopy. The results showed that all the three extracts of Rotula aquatica plant performed well as inhibitor for the corrosion of steel in sulphuric acid media and the inhibition efficiencies of the extract follow the trend RT > LV > ST. Inhibition efficiencies increased with increasing concentration of the plant extracts but decreased with the temperature rise for all cases. Both the cathodic hydrogen evolution and the anodic dissolution of mild steel were inhibited, hence the active molecules of all the extracts studied acted as mixed type corrosion inhibitors.

引用

页码：395 / 403

页数：9

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