2,2′-Dithiobis(3-cyano-4,6-dimethylpyridine): A new class of acid corrosion inhibitors for mild steel

Dapsone derivatives Viz., 4, 4’-sulfonylbis(N-((1H-pyrrol-2-yl)methylene)aniline) (SBPMA) and 2-dimethylamino-5-[(4-{4-[(4-dimethylamino-benzylidene)-amino]-benzenesulfonyl}-phenylimino)-methyl]-benzene (DBBPB), a new class of corrosion inhibitors have been synthesized and their corrosion inhibition efficiency on mild steel in 0.5 M H2SO4 was investigated by mass loss, Tafel polarization and AC impedance measurements. Potentiodynamic polarization studies showed that, these compounds behave as mixed type of corrosion inhibitors. The adsorption process was found to obey Langmuir isotherm model. Electrochemical impedance spectroscopy (EIS) studies revealed that polarization resistance (RP) increases and double layer capacitance (Cdl) decreases as the concentration of the inhibitors increases. Various thermodynamic parameters for the adsorption of inhibitors on mild steel were computed and discussed. FTIR, EDX and SEM analyses were performed to study the film persistency of the inhibitors.

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Pyrazole derivatives as environmental benign acid corrosion inhibitors for mild steel: Experimental and computational studies

Journal of Molecular Liquids ◽

10.1016/j.molliq.2019.111943 ◽

2020 ◽

Vol 298 ◽

pp. 111943 ◽

Cited By ~ 15

Author(s):

Chandrabhan Verma ◽

Viswanathan S. Saji ◽

M.A. Quraishi ◽

E.E. Ebenso

Keyword(s):

Mild Steel ◽

Corrosion Inhibitors ◽

Acid Corrosion ◽

Computational Studies ◽

Pyrazole Derivatives

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The substituted 1,3,4-oxadiazoles: a new class of corrosion inhibitors of mild steel in acidic media

Corrosion Science ◽

10.1016/s0010-938x(99)00049-9 ◽

2000 ◽

Vol 42 (1) ◽

pp. 127-146 ◽

Cited By ~ 506

Author(s):

F. Bentiss ◽

M. Traisnel ◽

M. Lagrenee

Keyword(s):

Mild Steel ◽

Corrosion Inhibitors ◽

Acidic Media ◽

New Class

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Pyridine-based functionalized graphene oxides as a new class of corrosion inhibitors for mild steel: an experimental and DFT approach

RSC Advances ◽

10.1039/c7ra05825j ◽

2017 ◽

Vol 7 (62) ◽

pp. 39063-39074 ◽

Cited By ~ 31

Author(s):

Rajeev Kumar Gupta ◽

Manisha Malviya ◽

Chandrabhan Verma ◽

Neeraj K. Gupta ◽

M. A. Quraishi

Keyword(s):

Graphene Oxide ◽

Hydrochloric Acid ◽

Mild Steel ◽

Corrosion Inhibitors ◽

Functionalized Graphene ◽

Graphene Oxides ◽

Functionalized Graphene Oxide ◽

New Class

Two functionalized graphene oxides, diazo pyridine functionalized graphene oxide and diamino pyridine functionalized graphene oxide, were synthesised and evaluated as corrosion inhibitors on mild steel in 1 M hydrochloric acid.

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