Open AccessStudy of Anticorrosive Action and Synthesis of 2-(Phenoxymethyl)-5-p-tolyl- 1,3,4-oxadiazole in 1 M Hydrochloric Acid Medium for Mild Steel
Author(s) -
Sanjiv Kumar,
Vikas Kalia,
Hariom Dahiya
Publication year - 2022
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.2022.23560
Subject(s) - chemistry , gravimetric analysis , oxadiazole , hydrochloric acid , adsorption , double layer capacitance , nuclear chemistry , corrosion , electrochemistry , langmuir adsorption model , nyquist plot , inorganic chemistry , organic chemistry , electrode , dielectric spectroscopy
Oxadiazole derivative 2-(phenoxymethyl)-5-p-tolyl-1,3,4-oxadiazole (2POM5PTO) was prepared by condensation of phenoxymethylhydrazine with p-tolualdehyde. Further tested as corrosion inhibitor for mild steel via electrochemical methods, potentiodynamic polarization(PDP) and gravimetric experiments. An increasing trend in inhibition efficiency has been seen on raising the concentration of 2POM5PTO.PDP technique reveals the mixed-type inhibitor behaviour of 2POM5PTO. The depressed semicircular Nyquist plot explains that thecharge transfer resistance increased with inhibitor concentration while double-layer capacitance (Cdl) decreased. The surface elucidationwas done by scanning electron microscopy. The studied inhibitor obeys the Langmuir adsorption isotherm.