Berberine isolated from Mahonia nepalensis as an eco-friendly and thermally stable corrosion inhibitor for mild steel in acid medium

Background: The environmental and economic benefits have been the driving force in search of efficient corrosion inhibitors for iron/steel used in industrial acidic medium. This study reports on berberine isolated from methanol extract of high-altitude (1347 m) shrub Mahonia nepalensis as a highly e...

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Autores principales:	Nabin Karki, Shova Neupane, Dipak Kumar Gupta, Anju Kumari Das, Sanjay Singh, Gayatri Maiya Koju, Yogesh Chaudhary, Amar Prasad Yadav
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Acid corrosion Weight loss Polarization EIS Adsorption isotherm Mixed inhibitor Chemistry QD1-999
Acceso en línea:	https://doaj.org/article/1859a6ba3f6e4b13b94bf5483e624bc2
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spelling	oai:doaj.org-article:1859a6ba3f6e4b13b94bf5483e624bc22021-11-20T04:57:48ZBerberine isolated from Mahonia nepalensis as an eco-friendly and thermally stable corrosion inhibitor for mild steel in acid medium1878-535210.1016/j.arabjc.2021.103423https://doaj.org/article/1859a6ba3f6e4b13b94bf5483e624bc22021-12-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S187853522100438Xhttps://doaj.org/toc/1878-5352Background: The environmental and economic benefits have been the driving force in search of efficient corrosion inhibitors for iron/steel used in industrial acidic medium. This study reports on berberine isolated from methanol extract of high-altitude (1347 m) shrub Mahonia nepalensis as a highly efficient and thermally stable corrosion inhibitor for mild steel (MS) in 1.0 M H2SO4 simulating acid pickling condition. Methods: The weight-loss and electrochemical methods revealed the fast adsorption of berberine.Significant Findings: It achieved above 91% inhibition efficiency (IE) in 0.25 h and reached 94% in 6 h for 1000 ppm berberine. The IE increased with concentration and temperature, giving an IE of 97.2% at 328 K, which makes it a promising candidate for industrial application. It behaved as a mixed type of inhibitor as revealed by open circuit potential and polarization curves. The results indicated suppression of the corrosion by effectively forming an adsorbed berberine layer on the MS surface. Adsorption of the berberine followed a Langmuir adsorption isotherm. The thermodynamic parameters such as activation energy (43.19 kJ/mol), free energy (−35.05 kJ/mol), enthalpy (40.55 kJ/mol), and entropy (−97.83 J/molK) of adsorption supported both physical and chemical interactions of berberine with MS surface. The obtained results also revealed that the adsorption process was endothermic and spontaneous in nature.Nabin KarkiShova NeupaneDipak Kumar GuptaAnju Kumari DasSanjay SinghGayatri Maiya KojuYogesh ChaudharyAmar Prasad YadavElsevierarticleAcid corrosionWeight lossPolarizationEISAdsorption isothermMixed inhibitorChemistryQD1-999ENArabian Journal of Chemistry, Vol 14, Iss 12, Pp 103423- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Acid corrosion Weight loss Polarization EIS Adsorption isotherm Mixed inhibitor Chemistry QD1-999
spellingShingle	Acid corrosion Weight loss Polarization EIS Adsorption isotherm Mixed inhibitor Chemistry QD1-999 Nabin Karki Shova Neupane Dipak Kumar Gupta Anju Kumari Das Sanjay Singh Gayatri Maiya Koju Yogesh Chaudhary Amar Prasad Yadav Berberine isolated from Mahonia nepalensis as an eco-friendly and thermally stable corrosion inhibitor for mild steel in acid medium
description	Background: The environmental and economic benefits have been the driving force in search of efficient corrosion inhibitors for iron/steel used in industrial acidic medium. This study reports on berberine isolated from methanol extract of high-altitude (1347 m) shrub Mahonia nepalensis as a highly efficient and thermally stable corrosion inhibitor for mild steel (MS) in 1.0 M H2SO4 simulating acid pickling condition. Methods: The weight-loss and electrochemical methods revealed the fast adsorption of berberine.Significant Findings: It achieved above 91% inhibition efficiency (IE) in 0.25 h and reached 94% in 6 h for 1000 ppm berberine. The IE increased with concentration and temperature, giving an IE of 97.2% at 328 K, which makes it a promising candidate for industrial application. It behaved as a mixed type of inhibitor as revealed by open circuit potential and polarization curves. The results indicated suppression of the corrosion by effectively forming an adsorbed berberine layer on the MS surface. Adsorption of the berberine followed a Langmuir adsorption isotherm. The thermodynamic parameters such as activation energy (43.19 kJ/mol), free energy (−35.05 kJ/mol), enthalpy (40.55 kJ/mol), and entropy (−97.83 J/molK) of adsorption supported both physical and chemical interactions of berberine with MS surface. The obtained results also revealed that the adsorption process was endothermic and spontaneous in nature.
format	article
author	Nabin Karki Shova Neupane Dipak Kumar Gupta Anju Kumari Das Sanjay Singh Gayatri Maiya Koju Yogesh Chaudhary Amar Prasad Yadav
author_facet	Nabin Karki Shova Neupane Dipak Kumar Gupta Anju Kumari Das Sanjay Singh Gayatri Maiya Koju Yogesh Chaudhary Amar Prasad Yadav
author_sort	Nabin Karki
title	Berberine isolated from Mahonia nepalensis as an eco-friendly and thermally stable corrosion inhibitor for mild steel in acid medium
title_short	Berberine isolated from Mahonia nepalensis as an eco-friendly and thermally stable corrosion inhibitor for mild steel in acid medium
title_full	Berberine isolated from Mahonia nepalensis as an eco-friendly and thermally stable corrosion inhibitor for mild steel in acid medium
title_fullStr	Berberine isolated from Mahonia nepalensis as an eco-friendly and thermally stable corrosion inhibitor for mild steel in acid medium
title_full_unstemmed	Berberine isolated from Mahonia nepalensis as an eco-friendly and thermally stable corrosion inhibitor for mild steel in acid medium
title_sort	berberine isolated from mahonia nepalensis as an eco-friendly and thermally stable corrosion inhibitor for mild steel in acid medium
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/1859a6ba3f6e4b13b94bf5483e624bc2
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Berberine isolated from Mahonia nepalensis as an eco-friendly and thermally stable corrosion inhibitor for mild steel in acid medium

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