L-proline mixed with sodium benzoate as sustainable inhibitor for mild steel corrosion in 1M HCl: An experimental and theoretical approach

Abstract Following standard experimental (gravimetric measurements, potentiodynamic polarization measurements, electrochemical impedance measurements, spectroscopic measurements, scanning electron microscopy technique) and theoretical (DFT) approach, inhibition effect of L-proline (LPr) and LPr mixe...

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Autores principales:	Mosarrat Parveen, Mohammad Mobin, Saman Zehra, Ruby Aslam
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2018
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/1c2dc3c71374412f9d7d5c4e275bad4a
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spelling	oai:doaj.org-article:1c2dc3c71374412f9d7d5c4e275bad4a2021-12-02T11:40:35ZL-proline mixed with sodium benzoate as sustainable inhibitor for mild steel corrosion in 1M HCl: An experimental and theoretical approach10.1038/s41598-018-24143-22045-2322https://doaj.org/article/1c2dc3c71374412f9d7d5c4e275bad4a2018-05-01T00:00:00Zhttps://doi.org/10.1038/s41598-018-24143-2https://doaj.org/toc/2045-2322Abstract Following standard experimental (gravimetric measurements, potentiodynamic polarization measurements, electrochemical impedance measurements, spectroscopic measurements, scanning electron microscopy technique) and theoretical (DFT) approach, inhibition effect of L-proline (LPr) and LPr mixed with sodium benzoate (LPr + NaBenz) for mild steel (MS) corrosion in 1M HCl was studied at 30, 40, 50 and 60 °C. The concentration of LPr was varied between 100–600 ppm, whereas that of NaBenz was fixed at 10 ppm. LPr lowered the corrosion rates of MS to a considerable extent. Corrosion mitigating efficacy of LPr is synergistically enhanced on adding NaBenz at all concentrations. Evaluation of polarization parameters suggested that both LPr and LPr + NaBenz act as mixed type inhibitor with more control on cathodic reaction whereas impedance parameters suggested inhibition of metal corrosion by adsorption at the MS/solution interface. Surface microscopic examination of corroded and uncorroded MS coupons supported the protective effect of adsorbed inhibitor layer at the MS surface. Spectroscopic studies are suggestive of the complex formation between inhibitor molecules and the metal. When LPr is combined with NaBenz, the corrosion inhibition rate was improved greatly. Corrosion mitigating efficacy of LPr or LPr mixed with NaBenz obtained by different techniques are in good agreement and correlate well with theoretical quantum chemical descriptors.Mosarrat ParveenMohammad MobinSaman ZehraRuby AslamNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 8, Iss 1, Pp 1-18 (2018)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Mosarrat Parveen Mohammad Mobin Saman Zehra Ruby Aslam L-proline mixed with sodium benzoate as sustainable inhibitor for mild steel corrosion in 1M HCl: An experimental and theoretical approach
description	Abstract Following standard experimental (gravimetric measurements, potentiodynamic polarization measurements, electrochemical impedance measurements, spectroscopic measurements, scanning electron microscopy technique) and theoretical (DFT) approach, inhibition effect of L-proline (LPr) and LPr mixed with sodium benzoate (LPr + NaBenz) for mild steel (MS) corrosion in 1M HCl was studied at 30, 40, 50 and 60 °C. The concentration of LPr was varied between 100–600 ppm, whereas that of NaBenz was fixed at 10 ppm. LPr lowered the corrosion rates of MS to a considerable extent. Corrosion mitigating efficacy of LPr is synergistically enhanced on adding NaBenz at all concentrations. Evaluation of polarization parameters suggested that both LPr and LPr + NaBenz act as mixed type inhibitor with more control on cathodic reaction whereas impedance parameters suggested inhibition of metal corrosion by adsorption at the MS/solution interface. Surface microscopic examination of corroded and uncorroded MS coupons supported the protective effect of adsorbed inhibitor layer at the MS surface. Spectroscopic studies are suggestive of the complex formation between inhibitor molecules and the metal. When LPr is combined with NaBenz, the corrosion inhibition rate was improved greatly. Corrosion mitigating efficacy of LPr or LPr mixed with NaBenz obtained by different techniques are in good agreement and correlate well with theoretical quantum chemical descriptors.
format	article
author	Mosarrat Parveen Mohammad Mobin Saman Zehra Ruby Aslam
author_facet	Mosarrat Parveen Mohammad Mobin Saman Zehra Ruby Aslam
author_sort	Mosarrat Parveen
title	L-proline mixed with sodium benzoate as sustainable inhibitor for mild steel corrosion in 1M HCl: An experimental and theoretical approach
title_short	L-proline mixed with sodium benzoate as sustainable inhibitor for mild steel corrosion in 1M HCl: An experimental and theoretical approach
title_full	L-proline mixed with sodium benzoate as sustainable inhibitor for mild steel corrosion in 1M HCl: An experimental and theoretical approach
title_fullStr	L-proline mixed with sodium benzoate as sustainable inhibitor for mild steel corrosion in 1M HCl: An experimental and theoretical approach
title_full_unstemmed	L-proline mixed with sodium benzoate as sustainable inhibitor for mild steel corrosion in 1M HCl: An experimental and theoretical approach
title_sort	l-proline mixed with sodium benzoate as sustainable inhibitor for mild steel corrosion in 1m hcl: an experimental and theoretical approach
publisher	Nature Portfolio
publishDate	2018
url	https://doaj.org/article/1c2dc3c71374412f9d7d5c4e275bad4a
work_keys_str_mv	AT mosarratparveen lprolinemixedwithsodiumbenzoateassustainableinhibitorformildsteelcorrosionin1mhclanexperimentalandtheoreticalapproach AT mohammadmobin lprolinemixedwithsodiumbenzoateassustainableinhibitorformildsteelcorrosionin1mhclanexperimentalandtheoreticalapproach AT samanzehra lprolinemixedwithsodiumbenzoateassustainableinhibitorformildsteelcorrosionin1mhclanexperimentalandtheoreticalapproach AT rubyaslam lprolinemixedwithsodiumbenzoateassustainableinhibitorformildsteelcorrosionin1mhclanexperimentalandtheoreticalapproach
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L-proline mixed with sodium benzoate as sustainable inhibitor for mild steel corrosion in 1M HCl: An experimental and theoretical approach

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