Electrochemical evaluation of inhibition efficiency of ciprofloxacin on the corrosion of copper in acid media
| Autor: | Kumaravel Mallaiya, P. Thanapackiam, Subramaniam Rameshkumar, S.S. Subramanian |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Materials science
020209 energy Inorganic chemistry Langmuir adsorption model chemistry.chemical_element 02 engineering and technology 021001 nanoscience & nanotechnology Condensed Matter Physics Copper Dielectric spectroscopy Corrosion symbols.namesake Adsorption chemistry Physisorption Chemisorption 0202 electrical engineering electronic engineering information engineering symbols General Materials Science Point of zero charge 0210 nano-technology |
| Zdroj: | Materials Chemistry and Physics. 174:129-137 |
| ISSN: | 0254-0584 |
| DOI: | 10.1016/j.matchemphys.2016.02.059 |
| Popis: | The inhibition efficiency of ciprofloxacin on the corrosion of copper was studied in 1.0MHNO3 and 0.5MH2SO4 solutions by electrochemical impedance spectroscopy and potentiodynamic polarization techniques. The corrosion inhibition action of ciprofloxacin was observed to be of mixed type in both the acid media, but with more of a cathodic nature. The experimental data were found to fit well with the Langmuir adsorption isotherm. The thermodynamic parameters such as adsorption equilibrium constant(Kads), free energy of adsorption(ΔGads), activation energy(Ea) and potential of zero charge(PZC) showed that the adsorption of ciprofloxacin onto copper surface involves both physisorption and chemisorption. |
| Databáze: | OpenAIRE |
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