The influence of four quinoxaline derivatives (QNs) namely, (E)-1-benzyl-3-(4-methoxystyryl)quinoxalin-2(1H)-one (QN1), (E)-3-(2-(furan-2-yl)vinyl)quinoxalin-2(1H)-one (QN2), (E)-3-(4-methoxystyryl)quinoxalin-2(1H)-one (QN3), and (E)-3-styrylquinoxalin-2(1H)-one (QN4) on the mild steel corrosion in 1 M HCl was studied by weight loss and electrochemical methods. Results showed that QN1 shows maximum inhibition efficiency of 93% at 5×10^-3 M concentration. Polarization study revealed that the QNs act as mixed type inhibitors. EIS measurements showed that the studied compounds inhibit mild steel corrosion by adsorbing on the steel surface. Results showed that inhibition efficiency increases with concentration and decreases with the rises of the temperature from 303 to 333K. Adsorption of QNs on the mild steel surface obeyed the Langmuir adsorption isotherm.

Title

Der Pharmacia Lettre

Publisher

Scholars Research Library

Publisher Country

United Kingdom

Indexing

Scopus

Impact Factor

None

Publication Type

Both (Printed and Online)

Volume

8

Year

2016

Pages

167-179