Open AccessElectrochemical and Theoretical Studies of 2-Acetyl Pyridine and Acetophenone Derivatives as Corrosion Inhibitors for Mild Steel in HCl Solution
Author(s) -
Dharmendra Kumar Singh,
Mantu Kr. Singh
Publication year - 2020
Publication title -
asian journal of chemistry/asian journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.145
H-Index - 34
eISSN - 0975-427X
pISSN - 0970-7077
DOI - 10.14233/ajchem.2020.22897
Subject(s) - chemistry , hydrazone , acetophenone , pyridine , electrochemistry , adsorption , nuclear chemistry , inorganic chemistry , organic chemistry , electrode , catalysis
2-Acetyl pyridine nicotinic hydrazone and acetophenone nicotinic hydrazone have prepared and theircorrosion inhibition properties for mild steel in 1 M HCl were studied using weight loss, electrochemicaland density functional theory (DFT) methods. Both inhibitors showed good inhibition ability andtheir adsorption on mild obeyed Langmuir adsorption isotherm. Polarization measurements show thatthey can be classified as inhibitors of mixed type. The inhibition efficiencies of 2-acetyl pyridinenicotinic hydrazone and acetophenone nicotinic hydrazone at 2 mM optimum concentration are 96.5%and 87.7% respectively.