Evaluation of newly synthesized hydrazones as mild steel corrosion inhibitors by adsorption, electrochemical, quantum chemical and morphological studies
Joint Authors
Chaitra, Turuvekere K.
Mohana, Kikkeri N.
Tandon, Harmesh C.
Source
Arab Journal of Basic and Applied Sciences
Issue
Vol. 25, Issue 2 (31 Aug. 2018), pp.45-55, 11 p.
Publisher
University of Bahrain College of Science
Publication Date
2018-08-31
Country of Publication
Bahrain
No. of Pages
11
Main Subjects
Natural & Life Sciences (Multidisciplinary)
Abstract EN
Inhibition effect of newly synthesized heterocydic aromatic compounds, 3-(cyano-dimethyl- methy-benzoic acid thiopherv-2-ylmethylene-hydrazide (CBTH) and 3-(cyano-dimethyl- methyl)-benzoic acid furan-2-ylmethylene-hydrazide (CBFH) was studied on mild steel corrosion in hydrochloric acid medium by gravimetric electrochemical and morphological techniques and correlated with quantum chemical indices of the respective molecules.
At optimized concentration (2mM), CBTH and CBFH showed the highest inhibition efficiency of 87.1% and 85.3%, respectively.
Impedance study revealed that simultaneous increase in polarization resistance and decrease in double layer capacitance with increasing inhibitor concentration is due to adsorption phenomenon of hydrazones.
Inhibitors shift the corrosion potential to less negative value which hinders dissolution of mild steel and evolution of hydrogen and it is more pronounced in anodic reaction.
Corrosion current density decreased from 0.2mA cm-2 (blank) to 0.0177 and 0.026 mA cm-2 and polarization resistance increased from 199 Q cm2 to 1590 and 1552 Q cm2 for CBTH and CBFH, respectively.
Quantitative structure activity relationship (QSAR) results showed good correlations between a number of quantum chemical parameters and the experimentally determined inhibition efficiency.
Scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDX) analyses confirmed the formation of protective inhibitory film.
American Psychological Association (APA)
Chaitra, Turuvekere K.& Mohana, Kikkeri N.& Tandon, Harmesh C.. 2018. Evaluation of newly synthesized hydrazones as mild steel corrosion inhibitors by adsorption, electrochemical, quantum chemical and morphological studies. Arab Journal of Basic and Applied Sciences،Vol. 25, no. 2, pp.45-55.
https://search.emarefa.net/detail/BIM-862023
Modern Language Association (MLA)
Chaitra, Turuvekere K.…[et al.]. Evaluation of newly synthesized hydrazones as mild steel corrosion inhibitors by adsorption, electrochemical, quantum chemical and morphological studies. Arab Journal of Basic and Applied Sciences Vol. 25, no. 2 (2018), pp.45-55.
https://search.emarefa.net/detail/BIM-862023
American Medical Association (AMA)
Chaitra, Turuvekere K.& Mohana, Kikkeri N.& Tandon, Harmesh C.. Evaluation of newly synthesized hydrazones as mild steel corrosion inhibitors by adsorption, electrochemical, quantum chemical and morphological studies. Arab Journal of Basic and Applied Sciences. 2018. Vol. 25, no. 2, pp.45-55.
https://search.emarefa.net/detail/BIM-862023
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references : p. 54-55
Record ID
BIM-862023