Ziziphus joazeiro Stem Bark Extract as a Green Corrosion Inhibitor for Mild Steel in Acid Medium

dc.creatorMauro, Aparecida Cristina
dc.creatorRibeiro, Bernardo Dias
dc.creatorGarrett, Rafael
dc.creatorBorges, Ricardo Moreira
dc.creatorSilva, Talis Uelisson da
dc.creatorMachado, Sérgio de Paula
dc.creatorAraujo, Joyce Rodrigues de
dc.creatorMassafra, Sanair de Oliveira
dc.creatorOliveira Junior, Francisco Odencio Rodrigues de
dc.creatorD`Elia, Eliane
dc.date2021-09-23T17:40:18Z
dc.date2021-09-23T17:40:18Z
dc.date2021
dc.date.accessioned2023-09-26T23:59:07Z
dc.date.available2023-09-26T23:59:07Z
dc.identifierMAURO, Aparecida Cristina et al. Ziziphus joazeiro Stem Bark Extract as a Green Corrosion Inhibitor for Mild Steel in Acid Medium. Processes, v. 9, 1323, 22 p, July 2021.
dc.identifier2227-9717
dc.identifierhttps://www.arca.fiocruz.br/handle/icict/49146
dc.identifier10.3390/pr9081323
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/8896239
dc.descriptionThe aqueous extract of Joazeiro stem bark (EJSB) and its high molecular weight fraction (HMWF) were examined as potential corrosion inhibitors of mild steel in 1 mol L−1 hydrochloric acid media, using weight-loss measurements, potentiodynamic polarization curves and an electrochemical impedance spectroscopy (EIS).Varying the concentration of the inhibitors from 100 to 800 mg L−1 , the results show an increase in anticorrosive efficiency from 85.4 to 89.8 and 89.8 to 93.0% for EJSB and its HMWF, respectively, using the data of the gravimetric essay, and from 84.5 to 94.5 and 89.9 to 94.7% for EJSB and its HMWF, respectively, from the impedance data. The composition of the crude extract was chemically characterized by liquid chromatography-high resolution mass spectrometry. Additionally, scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS) were used, respectively, to morphologically and chemically characterize the surface. Considering that the saponin molecules, the main constituent from juá, are responsible for its inhibitory action, quantum chemical calculations showed that the C67, C69 and O144 atoms likely have an important role in the process of electron-donation of saponin to metal, due to the higher values of ƒk + and %HOMO observed on these atoms.
dc.formatapplication/pdf
dc.languageeng
dc.publisherMDPI
dc.rightsopen access
dc.subjectExtrato de casca de haste de Ziziphus joazeiro
dc.subjectInibidor de corrosão
dc.subjectAço suave
dc.subjectLC-MS
dc.subjectMedições eletroquímicas
dc.subjectZiziphus joazeiro stem bark extract
dc.subjectCorrosion inhibitor
dc.subjectMild steel
dc.subjectLC-MS
dc.subjectElectrochemical measurements
dc.titleZiziphus joazeiro Stem Bark Extract as a Green Corrosion Inhibitor for Mild Steel in Acid Medium
dc.typeArticle


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