Show simple item record

dc.contributor.authorSouto, Ricardo Manuel 
dc.contributor.authorTalebian, M.
dc.contributor.authorRaeissi, Keyvan
dc.contributor.authorAtapour, M.
dc.contributor.authorFernández Pérez, Bibiana María 
dc.contributor.authorSalarvand, Z.
dc.contributor.authorMeghdadi, S.
dc.contributor.authorAmirnasr, M.
dc.date.accessioned2020-03-21T19:35:15Z
dc.date.available2020-03-21T19:35:15Z
dc.date.issued2018es_ES
dc.identifier.urihttp://riull.ull.es/xmlui/handle/915/18989
dc.description.abstractThe inhibition performance of a novel anionic carboxylic Schiff base, sodium (E)-4-(4-nitrobenzylideneamino)benzoate (SNBB), was investigated for various metals, namely low carbon steel F111, pure iron and copper, in neutral 10 mM NaCl solution. Potentiodynamic polarization, scanning vibrating electrode technique (SVET), quantum chemical (QC) calculation, and molecular dynamics (MD) simulation were employed. The potentiodynamic polarization data showed that SNBB acts as an effective corrosion inhibitor for both iron and F111 steel, but it is not effective for the copper. In situ spatially-resolved SVET maps evidenced a major change in surface reactivity for Fe and F111 steel immersed in 10 mM aqueous solution in the absence and in the presence of SNBB. Featureless ionic current density distributions were recorded in the presence of SNBB at both their spontaneous open circuit potential (OCP) and under mild anodic polarization conditions, while major ionic flows were monitored above the metals in the absence of SNBB. On the basis of computer simulations, it is proposed that SNBB produces a stable chelate film on iron and steel surfaces that accounts for the good corrosion inhibition efficiency observed. The different inhibition efficiencies of SNBB molecules on the iron and copper was attributed to the special chemical structure of SNBB molecule and its different chelation ability with the released metal ions on the metal surface. The QC calculations also confirmed the high corrosion inhibition efficiency of SNBB. The MD simulation indicated higher binding energy of SNBB on iron surface compared to that of copper surface. The interaction mode of SNBB on iron and F111 steel surfaces corresponds to a mixed chemical and physical adsorption, and it obeys the Langmuir isothermen
dc.format.mimetypeapplication/pdf
dc.language.isoenes_ES
dc.relation.ispartofseriesApplied Surface Science, 447, 852-865 (2018)es_ES
dc.rightsLicencia Creative Commons (Reconocimiento-No comercial-Sin obras derivadas 4.0 Internacional)
dc.rights.urihttps://creativecommons.org/licenses/by-nc-nd/4.0/deed.es_ES
dc.titleInhibitive effect of sodium (E)-4-(4-nitrobenzylidenamino) benzoate on the corrosion of some metals in sodium chloride solutionen
dc.typeinfo:eu-repo/semantics/article
dc.identifier.doi10.1016/j.apsusc.2018.04.073
dc.subject.keywordIronen
dc.subject.keywordCopperen
dc.subject.keywordSteelen
dc.subject.keywordScanning Vibrating Electrode Techniqueen
dc.subject.keywordPolarizationen
dc.subject.keywordModelling studiesen
dc.subject.keywordCorrosion inhibitionen


Files in this item

This item appears in the following Collection(s)

Show simple item record

Licencia Creative Commons (Reconocimiento-No comercial-Sin obras derivadas 4.0 Internacional)
Except where otherwise noted, this item's license is described as Licencia Creative Commons (Reconocimiento-No comercial-Sin obras derivadas 4.0 Internacional)