Impact of pH and temperature on the electrochemical and semiconducting properties of zinc in alkaline buffer media
Tantawy, Noura;
Abstract
The electrochemical and semiconductive properties of spontaneously formed passive films on pure Zn
were investigated in alkaline carbonate/bicarbonate buffer solutions as functions of pH and temperature.
The study was performed in 0.1 M (CO3
2 + HCO3
) mixtures over the pH range 9.2 to 9.8 using open
circuit potential, electrochemical impedance spectroscopy (EIS), potentiodynamic polarization and
Mott–Schottky analysis techniques. Generally, zinc passivation is enhanced with either increasing pH or
decreasing the ambient temperature. The steady state potential (Ess) value reveals that in pH 9.8 buffer
the propensity of Zn for passivation is superior when compared with those in the other tested buffer
solutions
were investigated in alkaline carbonate/bicarbonate buffer solutions as functions of pH and temperature.
The study was performed in 0.1 M (CO3
2 + HCO3
) mixtures over the pH range 9.2 to 9.8 using open
circuit potential, electrochemical impedance spectroscopy (EIS), potentiodynamic polarization and
Mott–Schottky analysis techniques. Generally, zinc passivation is enhanced with either increasing pH or
decreasing the ambient temperature. The steady state potential (Ess) value reveals that in pH 9.8 buffer
the propensity of Zn for passivation is superior when compared with those in the other tested buffer
solutions
Other data
| Title | Impact of pH and temperature on the electrochemical and semiconducting properties of zinc in alkaline buffer media | Authors | Tantawy, Noura | Issue Date | 2018 | Journal | RSC Advances |
Attached Files
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|---|---|---|---|---|
| paper 2018 (2).pdf | 3.02 MB | Adobe PDF | Request a copy |
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