Microwave Assisted Eco-friendly Synthesis of Chalcones using 2,4-dihydroxy Acetophenone and Aldehydes as Corrosion Inhibitors for Mild Steel in 1M HCl

In the present investigation we have synthesized four chalcones namely 3-(4-chlorophenyl)-1-(2, 4-dihydroxyphenyl) prop-2-en-1-one (chal-1), 1-(2, 4-dihydroxyphenyl)-3-p-tolylprop-2-en-1-one (chal-2) 1-(2, 4-dihydroxyphenyl)-3-(2-hydroxyphenyl) prop-2-en-1-one (chal-3) and 1-(2, 4-dihydroxyphenyl)-3-(4-hydroxy-3-methoxyphenyl) prop-2-en-1-one (chal-4) and premeditated their corrosion inhibitionproperty on mild steel (ms) in 1m hcl using chemical and electrochemical methods. thescanning electron microscopic (sem) study reveals the formation of protective film ofchalcones on ms surface. presence of elements on ms surface was also studied using highenergy dispersive (edx) technique. potentiodynamic polarization study reveals thatchalcones are of mixed type inhibitors. weight –loss experiment also performed at differenttemperature in order to derive thermodynamic parameters and to explain mechanism ofadsorption