Aqueous oxidation of iron monosulfide (FeS) in the presence of glycine
| Autor: | Irina Dăbuleanu, Ana M. Sandu, Mădălina I. Duinea, Geta Cârâc, Paul Chiriță, Mihaela Alexandra Petcu |
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| Rok vydání: | 2017 |
| Předmět: |
Aqueous solution
Chemistry General Chemical Engineering Inorganic chemistry 02 engineering and technology Oxidative phosphorylation 010402 general chemistry 021001 nanoscience & nanotechnology Electrochemistry 01 natural sciences 0104 chemical sciences Analytical Chemistry Dielectric spectroscopy Adsorption Glycine Density functional theory 0210 nano-technology Dissolution |
| Zdroj: | Journal of Electroanalytical Chemistry. 804:165-170 |
| ISSN: | 1572-6657 |
| DOI: | 10.1016/j.jelechem.2017.10.005 |
| Popis: | The effect of glycine on the aqueous oxidation of FeS was evaluated in the range of 0.1–1.0 mM at pH 2.5 and 25 °C by electrochemical techniques (potentiodynamic polarization and Electrochemical Impedance Spectroscopy) and Density Functional Theory (DFT) computations. Our findings show that the inhibition efficiency of glycine in controlling the oxidative dissolution of FeS increases when the glycine concentration increases up to 0.5 mM. Further increase of glycine concentration up to 1 mM produces the decrease of the corresponding inhibition efficiency. The results of our study indicate that the inhibiting effect of glycine on the oxidative dissolution of FeS is produced by the glycine adsorption on the ferric iron formed by the oxidation of the FeS surface. |
| Databáze: | OpenAIRE |
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