Inhibitory effect of Gentiana olivieri extracts on the corrosion of mild steel in 0.5 M HCl: Electrochemical and phytochemical evaluation
Natural inhibitors including plant extracts and their pure metabolites have become important as environmentally acceptable, low-cost, readily available and renewable source for a wide range of corrosion inhibitors. In the current study, the inhibitory effect of the methanol extract of Gentiana olivi...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2019-12-01
|
| Series: | Arabian Journal of Chemistry |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S1878535216300867 |
| _version_ | 1811212558100594688 |
|---|---|
| author | Evrim Baran Ahmet Cakir Birgül Yazici |
| author_facet | Evrim Baran Ahmet Cakir Birgül Yazici |
| author_sort | Evrim Baran |
| collection | DOAJ |
| description | Natural inhibitors including plant extracts and their pure metabolites have become important as environmentally acceptable, low-cost, readily available and renewable source for a wide range of corrosion inhibitors. In the current study, the inhibitory effect of the methanol extract of Gentiana olivieri and its fractions on the corrosion of mild steel in a 0.5 M HCl solution were investigated using potentiodynamic polarization and electrochemical impedance spectroscopy (EIS). The chemical compositions of the methanol extract and its fractions were identified by high-performance liquid chromatography (HPLC). EIS results showed maximum inhibition efficiency (93.7%) at an inhibitor concentration of 800 mg/L. Polarization curves indicated that the plant extract and its fractions are mixed-type inhibitors. Surface analyses (SEM/EDX) were carried out to establish the corrosion-inhibitive properties of the samples. Thermodynamic parameters (Ea, ΔH°, ΔS°, ΔG°) were also examined. Keywords: Gentiana olivieri, Mild steel, EIS, Acid inhibition, SEM/EDX |
| first_indexed | 2024-04-12T05:31:04Z |
| format | Article |
| id | doaj.art-205f74ce255146ac97d8e8840d6a1f83 |
| institution | Directory Open Access Journal |
| issn | 1878-5352 |
| language | English |
| last_indexed | 2024-04-12T05:31:04Z |
| publishDate | 2019-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Arabian Journal of Chemistry |
| spelling | doaj.art-205f74ce255146ac97d8e8840d6a1f832022-12-22T03:46:05ZengElsevierArabian Journal of Chemistry1878-53522019-12-0112843034319Inhibitory effect of Gentiana olivieri extracts on the corrosion of mild steel in 0.5 M HCl: Electrochemical and phytochemical evaluationEvrim Baran0Ahmet Cakir1Birgül Yazici2Department of Chemistry, Faculty of Science and Literature, Kilis 7 Aralık University, 79000 Kilis, Turkey; Corresponding author at: Kilis 7 Aralık University, Science and Letters Faculty, Chemistry Department, 79000 Kilis, Turkey. Fax: +90 348 822 23 51.Department of Chemistry, Faculty of Science and Literature, Kilis 7 Aralık University, 79000 Kilis, TurkeyDepartment of Chemistry, Faculty of Science and Literature, Çukurova University, 01000 Adana, TurkeyNatural inhibitors including plant extracts and their pure metabolites have become important as environmentally acceptable, low-cost, readily available and renewable source for a wide range of corrosion inhibitors. In the current study, the inhibitory effect of the methanol extract of Gentiana olivieri and its fractions on the corrosion of mild steel in a 0.5 M HCl solution were investigated using potentiodynamic polarization and electrochemical impedance spectroscopy (EIS). The chemical compositions of the methanol extract and its fractions were identified by high-performance liquid chromatography (HPLC). EIS results showed maximum inhibition efficiency (93.7%) at an inhibitor concentration of 800 mg/L. Polarization curves indicated that the plant extract and its fractions are mixed-type inhibitors. Surface analyses (SEM/EDX) were carried out to establish the corrosion-inhibitive properties of the samples. Thermodynamic parameters (Ea, ΔH°, ΔS°, ΔG°) were also examined. Keywords: Gentiana olivieri, Mild steel, EIS, Acid inhibition, SEM/EDXhttp://www.sciencedirect.com/science/article/pii/S1878535216300867 |
| spellingShingle | Evrim Baran Ahmet Cakir Birgül Yazici Inhibitory effect of Gentiana olivieri extracts on the corrosion of mild steel in 0.5 M HCl: Electrochemical and phytochemical evaluation Arabian Journal of Chemistry |
| title | Inhibitory effect of Gentiana olivieri extracts on the corrosion of mild steel in 0.5 M HCl: Electrochemical and phytochemical evaluation |
| title_full | Inhibitory effect of Gentiana olivieri extracts on the corrosion of mild steel in 0.5 M HCl: Electrochemical and phytochemical evaluation |
| title_fullStr | Inhibitory effect of Gentiana olivieri extracts on the corrosion of mild steel in 0.5 M HCl: Electrochemical and phytochemical evaluation |
| title_full_unstemmed | Inhibitory effect of Gentiana olivieri extracts on the corrosion of mild steel in 0.5 M HCl: Electrochemical and phytochemical evaluation |
| title_short | Inhibitory effect of Gentiana olivieri extracts on the corrosion of mild steel in 0.5 M HCl: Electrochemical and phytochemical evaluation |
| title_sort | inhibitory effect of gentiana olivieri extracts on the corrosion of mild steel in 0 5 m hcl electrochemical and phytochemical evaluation |
| url | http://www.sciencedirect.com/science/article/pii/S1878535216300867 |
| work_keys_str_mv | AT evrimbaran inhibitoryeffectofgentianaolivieriextractsonthecorrosionofmildsteelin05mhclelectrochemicalandphytochemicalevaluation AT ahmetcakir inhibitoryeffectofgentianaolivieriextractsonthecorrosionofmildsteelin05mhclelectrochemicalandphytochemicalevaluation AT birgulyazici inhibitoryeffectofgentianaolivieriextractsonthecorrosionofmildsteelin05mhclelectrochemicalandphytochemicalevaluation |