{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,5]],"date-time":"2026-01-05T21:58:16Z","timestamp":1767650296250,"version":"build-2065373602"},"reference-count":29,"publisher":"MDPI AG","issue":"4","license":[{"start":{"date-parts":[[2021,11,12]],"date-time":"2021-11-12T00:00:00Z","timestamp":1636675200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["CMD"],"abstract":"<jats:p>A new corrosion inhibitor called ATP-6-AHA was elaborated, and its inhibition action on S235 low carbon steel in 3.5% sodium chloride (NaCl) was investigated using gravimetry, potentiodynamic polarization (PP), and electrochemical impedance spectroscopy (EIS). The release of ecofriendly 6-aminohexanoic acid (6-AHA) from its established aluminum tri-polyphosphate intercalate (ATP-6-AHA) is investigated using electrochemical and surface characterization techniques such as X-ray diffraction (XRD) and X-ray fluorescence (XRF). The results revealed that ATP-6-AHA is a good inhibitor, with an inhibition efficiency of approximately 70%. The efficiency is related to the passivation of a steel surface by a phosphate protective layer due to the synergistic effect of 6-AHA, as confirmed by a steel surface analysis conducted using X-ray photoelectron spectroscopy (XPS) and scanning electron microscopy (SEM). This study suggests that the intercalation of 6-AHA as a sustainable organic molecule within the interlayer spaces of aluminum tri-polyphosphate can well serve as a good flaky inhibitor for protecting S235 low-carbon steel from corrosion in 3.5% NaCl.<\/jats:p>","DOI":"10.3390\/cmd2040036","type":"journal-article","created":{"date-parts":[[2021,11,14]],"date-time":"2021-11-14T20:52:28Z","timestamp":1636923148000},"page":"666-677","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":3,"title":["Effect of 6-Aminohexanoic Acid Released from Its Aluminum Tri-Polyphosphate Intercalate (ATP-6-AHA) on the Corrosion Protection Mechanism of Steel in 3.5% Sodium Chloride Solution"],"prefix":"10.3390","volume":"2","author":[{"given":"Chaymae","family":"Hejjaj","sequence":"first","affiliation":[{"name":"Materials Science, Energy and Nano-Engineering Department, University Mohammed VI Polytechnic (UM6P), Lot 660, Hay Moulay Rachid, Ben Guerir 43150, Morocco"},{"name":"IMED-Lab, Faculty of Science and Technology, Cadi Ayyad University (UCA), Marrakesh BP549, Morocco"}]},{"given":"Ahmed","family":"Aghzzaf","sequence":"additional","affiliation":[{"name":"Laboratoire des Sciences Appliqu\u00e9es et Didactique (LaSAD), Ecole Normale Sup\u00e9rieure, Universit\u00e9 Abdelmalek Essa\u00e2di, Tetouan 93020, Morocco"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5511-625X","authenticated-orcid":false,"given":"Nico","family":"Scharnagl","sequence":"additional","affiliation":[{"name":"Institute of Surface Science, Helmholtz-Zentrum Hereon GmbH, Max-Planck-Stra\u00dfe 1, 21502 Geesthacht, Germany"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4917-1428","authenticated-orcid":false,"given":"Mohammed","family":"Makha","sequence":"additional","affiliation":[{"name":"Materials Science, Energy and Nano-Engineering Department, University Mohammed VI Polytechnic (UM6P), Lot 660, Hay Moulay Rachid, Ben Guerir 43150, Morocco"}]},{"given":"Mouad","family":"Dahbi","sequence":"additional","affiliation":[{"name":"Materials Science, Energy and Nano-Engineering Department, University Mohammed VI Polytechnic (UM6P), Lot 660, Hay Moulay Rachid, Ben Guerir 43150, Morocco"}]},{"given":"Mikhail","family":"Zheludkevich","sequence":"additional","affiliation":[{"name":"Institute of Surface Science, Helmholtz-Zentrum Hereon GmbH, Max-Planck-Stra\u00dfe 1, 21502 Geesthacht, Germany"},{"name":"Faculty of Engineering, Kiel University, Kaiserstra\u00dfe 2, 24143 Kiel, Germany"}]},{"given":"Rachid","family":"Hakkou","sequence":"additional","affiliation":[{"name":"IMED-Lab, Faculty of Science and Technology, Cadi Ayyad University (UCA), Marrakesh BP549, Morocco"},{"name":"Mining Environment and Circular Economy Program (EMEC), Mohammed VI Polytechnic University (UM6P), Lot 660, Hay Moulay Rachid, Ben Guerir 43150, Morocco"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2850-5361","authenticated-orcid":false,"given":"Christian","family":"Fischer","sequence":"additional","affiliation":[{"name":"Materials Science, Energy and Nano-Engineering Department, University Mohammed VI Polytechnic (UM6P), Lot 660, Hay Moulay Rachid, Ben Guerir 43150, Morocco"},{"name":"Department of Physics, University Koblenz-Landau, 56070 Koblenz, Germany"}]}],"member":"1968","published-online":{"date-parts":[[2021,11,12]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"848","DOI":"10.1016\/j.molliq.2016.11.011","article-title":"Experimental and quantum chemical analysis of 2-amino-3-((4-((S)-2-amino-2-carboxyethyl)-1H-imidazol-2-yl)thio) propionic acid as new and green corrosion inhibitor for mild steel in 1 M hydrochloric acid solution","volume":"225","author":"Haque","year":"2017","journal-title":"J. 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