Substituent effect on corrosion inhibition of Schiff bases derived from isatin / Aliyin Abdul Ghani … [et al.]

Two Schiff bases, 3-(4-hydroxyphenylimino)-l,3-dihydroindol-2-one (OPI) and 3-(4-Chloro-phenylimino)-l,3-dihydroindol-2-one (CPI) were successfully synthesized through condensation reactions giving yields of 82% and 63%, respectively. The compounds were characterized via physical and spectroscopic t...

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Main Authors:	Abdul Ghani, Aliyin, Bahron, Hadariah, Hj Harun, Mohamad Kamal, Kassim, Karimah
Format:	Article
Language:	English
Published:	Penerbit UiTM (UiTM Press) 2016
Subjects:	Chemical engineering
Online Access:	http://ir.uitm.edu.my/id/eprint/16128/ http://ir.uitm.edu.my/id/eprint/16128/1/AJ_ALIYIN%20ABDUL%20GHANI%20SRJ%2016.pdf

id	uitm-16128
recordtype	eprints
spelling	uitm-161282017-02-16T03:51:50Z http://ir.uitm.edu.my/id/eprint/16128/ Substituent effect on corrosion inhibition of Schiff bases derived from isatin / Aliyin Abdul Ghani … [et al.] Abdul Ghani, Aliyin Bahron, Hadariah Hj Harun, Mohamad Kamal Kassim, Karimah Chemical engineering Two Schiff bases, 3-(4-hydroxyphenylimino)-l,3-dihydroindol-2-one (OPI) and 3-(4-Chloro-phenylimino)-l,3-dihydroindol-2-one (CPI) were successfully synthesized through condensation reactions giving yields of 82% and 63%, respectively. The compounds were characterized via physical and spectroscopic techniques, namely elemental analysis (C, H,N), ], ¹H and ¹³C Nuclear Magnetic Resonance (NMR) spectroscopy, Fourier Transform Infrared (FTIR) spectroscopy and melting point. The corrosion inhibiting property of the Schiff bases on mild steel in 1 M HC1 solution was investigated by the weight loss (WL) measurements, electrochemical impedance spectroscopy (EIS) and linear polarization resistance (LPR). The concentrations of the Schiff bases were varied from 1 x 10⁻³ M to 1 x 10⁻⁵ M. The inhibition efficiencies obtained from all the methods employed were in good agreement where the percentage of inhibition efficiencies increased with concentration. OPI showed better inhibition efficiency than CPI with 91% highest inhibition efficiency at 1 x 10⁻³ M additive concentration. This is likely to be caused by the resonance donating effect due to the presence of the hydroxyl group. The adsorption behaviour obeyed Langmuir isotherm for monolayer formation. Penerbit UiTM (UiTM Press) 2016 Article PeerReviewed text en http://ir.uitm.edu.my/id/eprint/16128/1/AJ_ALIYIN%20ABDUL%20GHANI%20SRJ%2016.pdf Abdul Ghani, Aliyin and Bahron, Hadariah and Hj Harun, Mohamad Kamal and Kassim, Karimah (2016) Substituent effect on corrosion inhibition of Schiff bases derived from isatin / Aliyin Abdul Ghani … [et al.]. Scientific Research Journal, 13 (1). pp. 2-14. ISSN 1675-7009
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Teknologi MARA
building	UiTM Institutional Repository
collection	Online Access
language	English
topic	Chemical engineering
spellingShingle	Chemical engineering Abdul Ghani, Aliyin Bahron, Hadariah Hj Harun, Mohamad Kamal Kassim, Karimah Substituent effect on corrosion inhibition of Schiff bases derived from isatin / Aliyin Abdul Ghani … [et al.]
description	Two Schiff bases, 3-(4-hydroxyphenylimino)-l,3-dihydroindol-2-one (OPI) and 3-(4-Chloro-phenylimino)-l,3-dihydroindol-2-one (CPI) were successfully synthesized through condensation reactions giving yields of 82% and 63%, respectively. The compounds were characterized via physical and spectroscopic techniques, namely elemental analysis (C, H,N), ], ¹H and ¹³C Nuclear Magnetic Resonance (NMR) spectroscopy, Fourier Transform Infrared (FTIR) spectroscopy and melting point. The corrosion inhibiting property of the Schiff bases on mild steel in 1 M HC1 solution was investigated by the weight loss (WL) measurements, electrochemical impedance spectroscopy (EIS) and linear polarization resistance (LPR). The concentrations of the Schiff bases were varied from 1 x 10⁻³ M to 1 x 10⁻⁵ M. The inhibition efficiencies obtained from all the methods employed were in good agreement where the percentage of inhibition efficiencies increased with concentration. OPI showed better inhibition efficiency than CPI with 91% highest inhibition efficiency at 1 x 10⁻³ M additive concentration. This is likely to be caused by the resonance donating effect due to the presence of the hydroxyl group. The adsorption behaviour obeyed Langmuir isotherm for monolayer formation.
format	Article
author	Abdul Ghani, Aliyin Bahron, Hadariah Hj Harun, Mohamad Kamal Kassim, Karimah
author_facet	Abdul Ghani, Aliyin Bahron, Hadariah Hj Harun, Mohamad Kamal Kassim, Karimah
author_sort	Abdul Ghani, Aliyin
title	Substituent effect on corrosion inhibition of Schiff bases derived from isatin / Aliyin Abdul Ghani … [et al.]
title_short	Substituent effect on corrosion inhibition of Schiff bases derived from isatin / Aliyin Abdul Ghani … [et al.]
title_full	Substituent effect on corrosion inhibition of Schiff bases derived from isatin / Aliyin Abdul Ghani … [et al.]
title_fullStr	Substituent effect on corrosion inhibition of Schiff bases derived from isatin / Aliyin Abdul Ghani … [et al.]
title_full_unstemmed	Substituent effect on corrosion inhibition of Schiff bases derived from isatin / Aliyin Abdul Ghani … [et al.]
title_sort	substituent effect on corrosion inhibition of schiff bases derived from isatin / aliyin abdul ghani … [et al.]
publisher	Penerbit UiTM (UiTM Press)
publishDate	2016
url	http://ir.uitm.edu.my/id/eprint/16128/ http://ir.uitm.edu.my/id/eprint/16128/1/AJ_ALIYIN%20ABDUL%20GHANI%20SRJ%2016.pdf
first_indexed	2023-09-18T22:55:23Z
last_indexed	2023-09-18T22:55:23Z
_version_	1777417818630782976

Substituent effect on corrosion inhibition of Schiff bases derived from isatin / Aliyin Abdul Ghani … [et al.]

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