Comparative adsorption study of dodecanol and cholesterol from ethylene glycol on the mercury electrode and air/solution interface

1996 ◽  
Vol 92 (20) ◽  
pp. 3859 ◽  
Author(s):  
Anna Muszalska ◽  
Maria Jurkiewicz-Herbich ◽  
Jadwiga Jastrzelbska
Keyword(s):  
Ethylene Glycol ◽  
Mercury Electrode ◽  
Adsorption Study ◽  
Solution Interface

Propolis Extract as Corrosion Inhibitor of Iron Alloy Immersed in an Ethylene Glycol / Water, 0.1 M NaCl Solution

2021 ◽  
Vol 406 ◽  
pp. 265-273
Author(s):  
Hakima Hachelef ◽  
Abdallah Khelifa ◽  
Abderrahim Benmoussat
Keyword(s):  
Electrochemical Impedance Spectroscopy ◽  
Impedance Spectroscopy ◽  
Ethylene Glycol ◽  
Corrosion Inhibitor ◽  
Electrochemical Impedance ◽  
Iron Alloy ◽  
Activation Parameters ◽  
Propolis Extract ◽  
Solution Interface ◽  
Isotherm Adsorption

The behaviour of a corrosion inhibitor based on proplolis extract via an iron alloy immersed in an electrolyte containing ethylene glycol water in NaCl 0.1 M was evaluated by a stationary technique not destructive which is the technique of electrochemical impedance. The diameter of the Nyquist curves increases with the increase of the concentration of propolis extract and it reaches an optimum concentration at 1.25 g / L, the maximum surface coverage percent at this concentration is 71.98% .The activation parameters reveal that the inhibitor molecules on iron surface are absorbed by physisorption and a chimisorption and obey Langmuir isotherm adsorption. These results were supplemented by Scanning electron microscopy (SEM) and (EDX) spectrum of chemical composition. The metal solution interface is simulated as a physical model by using electrochemical impedance spectroscopy (EIS). Keywords: Iron Alloy, Propolis extract, ethylene glycol;, Lamgmuir isotherm, Electrochemical impedance Spectroscopy (EIS).

Strong Hydration at the Poly(ethylene glycol) Brush/Albumin Solution Interface

Langmuir ◽  
2020 ◽  
Vol 36 (8) ◽  
pp. 2030-2036 ◽  
Author(s):  
Kexin Zhang ◽  
Hao Huang ◽  
Hsiang-Chieh Hung ◽  
Chuan Leng ◽  
Shuai Wei ◽  
...  
Keyword(s):  
Ethylene Glycol ◽  
Poly Ethylene Glycol ◽  
Albumin Solution ◽  
Solution Interface ◽  
Poly Ethylene

scholarly journals Adsorption phenomena at the interface between mercury and solutions containing choline chloride, ethylene glycol and water

2021 ◽  
pp. 50-58
Author(s):  
F.I. Danilov ◽  
◽  
Y.D. Rublova ◽  
V.S. Protsenko ◽  
◽  
...  
Keyword(s):  
Free Energy ◽  
Ethylene Glycol ◽  
Choline Chloride ◽  
Specific Interaction ◽  
Mercury Electrode ◽  
Deep Eutectic Solvent ◽  
Deep Eutectic Solvents ◽  
Charged Surface ◽  
Free Energies ◽  
Adsorption Phenomena

Adsorption of the components of deep eutectic solvent ethaline (ethylene glycol and choline chloride) on mercury electrode is investigated by electrocapillary measurements. It is determined that choline cations are mainly adsorbed on the negatively charged surface of mercury, while chloride anions are mainly adsorbed on the positively charged surface. The corresponding values of free energies of adsorption and interactions of adsorbate and solvent with metal are calculated and analyzed. An anomalous increase in both the apparent value of the adsorption at limiting coverage and the free energy of the interaction of the choline cation with mercury is observed in the transition from aqueous to ethylene glycol solutions, which is explained by the formation of complexes in a surface layer that exist in deep eutectic solvents and are capable of adsorbing on the electrode surface. The free energy of interaction with the mercury surface is higher than the energy of squeezing out from the volume of the solution onto its surface, which indicates the specific interaction of the adsorbate with mercury. A marked decrease in interfacial tension on both branches of the electrocapillary curve is observed when water is added to ethaline.

On the 2D phase transition of adenine adsorbed at the mercury/ethylene glycol solution interface

2004 ◽  
Vol 49 (9-10) ◽  
pp. 1655-1662 ◽  
Author(s):  
L BENEDETTI ◽  
G CAMURRI ◽  
C FONTANESI ◽  
P FERRARINI ◽  
R GIOVANARDI
Keyword(s):  
Phase Transition ◽  
Ethylene Glycol ◽  
Solution Interface ◽  
Glycol Solution
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