Open AccessThe inhibition of mild steel corrosion in 0.5 M H2SO4solution by N-phenethylhydrazinecarbothioamide (N-PHC)
Author(s) -
Lina M. Shaker,
Aqeel Al-Adili,
Ahmed A. Al-Amiery,
Mohd Sobri Takriff
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1795/1/012009
Subject(s) - corrosion , adsorption , langmuir adsorption model , hydrate , hydrazine (antidepressant) , benzene , chemistry , nuclear chemistry , inorganic chemistry , sorption isotherm , organic chemistry , chromatography
A new corrosion inhibitor namely N-phenethylhydrazinecarbothioamide (N-PHC) was synthesized through the reaction of hydrazine hydrate and (2-isothiocyanatoethyl)benzene. N-PHC has been characterized by spectroscopically techniques and CHN micro-elemental analysis. The inhibitive activity of N-PHC on mild steel corrosion in 0.5 M sulphuric acid solution was examined by the weight loss techniques. The findings exhibited that the inhibition efficiency increased with an increase in the concentration of N-PHC and decreased with an increase in temperature. The inhibition efficiency reached 94.7% with 250 ppm at 303 K. The inhibitive mechanism involved chemical adsorption and the adsorption of the N-PHC molecules through active sites on the surface of mild steel to control or retard corrosion. The adsorption isotherm obeyed the Langmuir isotherm.