Title of article :
Ultrasound Assisted Green Synthesis of 3-(4- (dimethylamino) phenyl)-1-phenylprop-2-en-1-one and its Heterocyclics Derived from Hydrazine, Urea and Thiourea as Corrosion Inhibitor for Mild Steel in 1M
Author/Authors :
Verma، Chandra Bhan نويسنده Department of Chemistry, Indian Institute of Technology, Banaras Hindu University, Varanasi 221005, India Verma, Chandra Bhan , Reddy، Mareddy Jayanth نويسنده Department of Metallurgical Engineering, Indian Institute of Technology, Banaras Hindu University, Varanasi 221005. India Reddy, Mareddy Jayanth , Quraishi، Mumtaz Ahmad نويسنده Department of Chemistry, Indian Institute of Technology, Banaras Hindu University, Varanasi 221005, India Quraishi, Mumtaz Ahmad
Abstract :
The purpose of present study was to investigate the corrosion inhibition property
of 3-(4-(dimethylamino) phenyl)-1-phenylprop-2-en-1-one(a chalcone, INH-1) derived from
condensation of acetophenone and 4, 4- dimethylamino benzaldehyde and three
heterocyclics derived from this using Hydrazine (INH-2), Urea (INH-3) and Thiourea (INH-
4) on mild steel (MS) in 1M HCl by weight loss and electrochemical methods. It was found
that inhibition efficiency increases with inhibitor concentration and maximum efficiency was
obtained at 25 ppm. Among the studied inhibitors, INH-4 shows the best inhibition efficiency
of 98.26 %. Variation of impedance parameters (Rct and Cdl) suggests the formation of
protective film of inhibitors on MS surface. The adsorption of inhibitors on MS surface was
also studied using Scanning Electron Microscopy (SEM) and Energy Dispersive X-ray
spectroscopy (EDX) techniques. The potentiodynamic study reveals that all studied
compounds are of mixed type. The adsorption of inhibitors on MS surface was found to
follow the Langmuir adsorption isotherm. The weight loss experiment was also performed at
different temperature to study the effect of temperature on corrosion rate (CR) and evaluated
some thermodynamic parameters
