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Surface modification of mild steel using 4-carboxyphenyl diazonium in sulfuric and hydrochloric acids. A corrosion study
In this paper, the surface of mild steel is modified with 4-carboxyphenyl diazonium and subsequently, the corrosion behaviour of the modified surface is scrutinized in hydrochloric and sulfuric acid solutions. The diazonium salt was synthesized in situ either in 0.5 M HCl or 0.25 M H(2)SO(4) through...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
The Royal Society of Chemistry
2023
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10240171/ https://www.ncbi.nlm.nih.gov/pubmed/37283870 http://dx.doi.org/10.1039/d3ra01415k |
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author | Seumo Tchekwagep, Patrick Marcel Aksaray, Goncagül Farsak, Murat Kardaş, Gülfeza |
author_facet | Seumo Tchekwagep, Patrick Marcel Aksaray, Goncagül Farsak, Murat Kardaş, Gülfeza |
author_sort | Seumo Tchekwagep, Patrick Marcel |
collection | PubMed |
description | In this paper, the surface of mild steel is modified with 4-carboxyphenyl diazonium and subsequently, the corrosion behaviour of the modified surface is scrutinized in hydrochloric and sulfuric acid solutions. The diazonium salt was synthesized in situ either in 0.5 M HCl or 0.25 M H(2)SO(4) through the reaction between 4-aminobenzoic acid and sodium nitrite. The surface of mild steel was modified with the obtained diazonium salt with or without the need for electrochemical assistance. Electrochemical impedance spectroscopy (EIS) measurements show that a spontaneously grafted mild steel surface has a better corrosion inhibition efficiency (86%) in 0.5 M HCl. Scanning electron microscopy reveals that the protective film formed on the surface of mild steel exposed to 0.5 M HCl containing the diazonium salt looks more consistent and uniform compared to the surface exposed to 0.25 M H(2)SO(4). Optimized diazonium structure and the separation energy calculated using density functional theory correlate with the good corrosion inhibition obtained experimentally. |
format | Online Article Text |
id | pubmed-10240171 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | The Royal Society of Chemistry |
record_format | MEDLINE/PubMed |
spelling | pubmed-102401712023-06-06 Surface modification of mild steel using 4-carboxyphenyl diazonium in sulfuric and hydrochloric acids. A corrosion study Seumo Tchekwagep, Patrick Marcel Aksaray, Goncagül Farsak, Murat Kardaş, Gülfeza RSC Adv Chemistry In this paper, the surface of mild steel is modified with 4-carboxyphenyl diazonium and subsequently, the corrosion behaviour of the modified surface is scrutinized in hydrochloric and sulfuric acid solutions. The diazonium salt was synthesized in situ either in 0.5 M HCl or 0.25 M H(2)SO(4) through the reaction between 4-aminobenzoic acid and sodium nitrite. The surface of mild steel was modified with the obtained diazonium salt with or without the need for electrochemical assistance. Electrochemical impedance spectroscopy (EIS) measurements show that a spontaneously grafted mild steel surface has a better corrosion inhibition efficiency (86%) in 0.5 M HCl. Scanning electron microscopy reveals that the protective film formed on the surface of mild steel exposed to 0.5 M HCl containing the diazonium salt looks more consistent and uniform compared to the surface exposed to 0.25 M H(2)SO(4). Optimized diazonium structure and the separation energy calculated using density functional theory correlate with the good corrosion inhibition obtained experimentally. The Royal Society of Chemistry 2023-06-05 /pmc/articles/PMC10240171/ /pubmed/37283870 http://dx.doi.org/10.1039/d3ra01415k Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/ |
spellingShingle | Chemistry Seumo Tchekwagep, Patrick Marcel Aksaray, Goncagül Farsak, Murat Kardaş, Gülfeza Surface modification of mild steel using 4-carboxyphenyl diazonium in sulfuric and hydrochloric acids. A corrosion study |
title | Surface modification of mild steel using 4-carboxyphenyl diazonium in sulfuric and hydrochloric acids. A corrosion study |
title_full | Surface modification of mild steel using 4-carboxyphenyl diazonium in sulfuric and hydrochloric acids. A corrosion study |
title_fullStr | Surface modification of mild steel using 4-carboxyphenyl diazonium in sulfuric and hydrochloric acids. A corrosion study |
title_full_unstemmed | Surface modification of mild steel using 4-carboxyphenyl diazonium in sulfuric and hydrochloric acids. A corrosion study |
title_short | Surface modification of mild steel using 4-carboxyphenyl diazonium in sulfuric and hydrochloric acids. A corrosion study |
title_sort | surface modification of mild steel using 4-carboxyphenyl diazonium in sulfuric and hydrochloric acids. a corrosion study |
topic | Chemistry |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10240171/ https://www.ncbi.nlm.nih.gov/pubmed/37283870 http://dx.doi.org/10.1039/d3ra01415k |
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