Table 7 Langmuir and Alawady parameters of PAS adsorption at X-65/HCl interface using EIS data at room temperature.

From: Experimental and theoretical assessments of an innovative star-shaped polyamine surfactant designed for X-65 steel corrosion mitigation in acidic environment

Inh

Langmuir

Alawady

R2

Slope

Kads (L mol−1)

\({\Delta G}_{\text{ads}}^{\circ }\)

(kJ mol−1)

R2

y

Kads (L mol−1)

\({\Delta G}_{\text{ads}}^{\circ }\)

(kJ mol−1)

PAS

0.9999

1.046136

246,740.7

-40.712

0.9591

0.379935

3,289,188.85

-46.338