Open AccessChemical, electrochemical and surface morphology investigation of Cichorium intybus extract (CIE) as beneficial inhibitor for Al in 2 M HCl acid
Publication year - 2020
Publication title -
letters in applied nanobioscience
Language(s) - English
Resource type - Journals
ISSN - 2284-6808
DOI - 10.33263/lianbs92.10641073
Subject(s) - x ray photoelectron spectroscopy , tafel equation , chemistry , fourier transform infrared spectroscopy , dielectric spectroscopy , adsorption , analytical chemistry (journal) , electrochemistry , polarization (electrochemistry) , dissolution , langmuir adsorption model , nuclear chemistry , chemical engineering , electrode , chromatography , engineering
The inhibiting activity of CIE(CIE) to the dissolution of Al in 2M HCl medium was carried out by chemical strategies (mass loss and gasometry) and electrochemical systems, for example, tafel polarization (TP), electrochemical impedance spectroscopy (EIS) and electrochemical frequency modulation (EFM). Surface morphology was examined utilizing atomic force microscopy (AFM) and x-ray photoelectron spectroscopy (XPS). Fourier transform infrared spectroscopy (FTIR) outcomes indicated that the inhibition mechanism was by adsorption process through the functional groups that exist in the investigated extract. The results demonstrated that the inhibiting efficiency expanded with expanding amounts of the extract. Polarization information demonstrated that CIE goes about as an inhibitor of mixed type. The procedure of adsorption on Al surface ascribed to Langmuir isotherm. All thermodynamic calculations were determined and discussed. The inhibitive efficiencies obtained from all utilized procedures have acceptable values.