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Adsorption and corrosion inhibiting effect of riboflavin on Q235 mild steel corrosion in acidic environments
M. A.; Oguzie Chidiebere, E. E.; Liu, L.; Li, Y.; Wang, F. H.
2015
Source PublicationMaterials Chemistry and Physics
ISSN0254-0584
Volume156Pages:95-104
AbstractThe inhibiting effect of Riboflavin (RF) on Q235 mild steel corrosion in 1 M HCl and 0.5 M H2SO4 at 30 degrees C temperature was investigated using electrochemical techniques (electrochemical impedance spectroscopy and potentiodynamic polarization). The obtained results revealed that RF inhibited the corrosion reaction in both acidic solutions. Maximum inhibition efficiency values in 1 M HCl and 0.5 M H2SO4 were 83.9% and 71.4%, respectively, obtained for 0.0012 M RF. Polarization data showed RF to be a mixed-type inhibitor, while EIS results revealed that the RF species adsorbed on the metal surface. The adsorption of RF followed Langmuir adsorption isotherm. Atomic force microscopy (AFM), Fourier transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM) studies confirmed the formation of a protective layer adsorbed on the steel surface. Quantum chemical calculations were used to correlate the inhibition ability of RF with its electronic structural parameters. (C) 2015 Elsevier B.V. All rights reserved.
description.department[chidiebere, maduabuchi a. ; liu, li ; li, ying ; wang, fuhui] chinese acad sci, inst met res, shenyang 110016, peoples r china. [chidiebere, maduabuchi a. ; oguzie, emeka e.] fed univ technol owerri, dept chem, electrochem & mat sci res lab, owerri, nigeria. ; li, y (reprint author), chinese acad sci, inst met res, 62 wencui rd, shenyang 110016, peoples r china. ; liying@imr.ac.cn
KeywordMetals Corrosion Electrochemical Techniques Molecular Dynamics Sulfuric-acid Hydrochloric-acid Ascorbic-acid Carbon-steel Iron Derivatives Behavior Media Spectroscopy Chloride
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Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/73779
Collection中国科学院金属研究所
Recommended Citation
GB/T 7714
M. A.,Oguzie Chidiebere, E. E.,Liu, L.,et al. Adsorption and corrosion inhibiting effect of riboflavin on Q235 mild steel corrosion in acidic environments[J]. Materials Chemistry and Physics,2015,156:95-104.
APA M. A.,Oguzie Chidiebere, E. E.,Liu, L.,Li, Y.,&Wang, F. H..(2015).Adsorption and corrosion inhibiting effect of riboflavin on Q235 mild steel corrosion in acidic environments.Materials Chemistry and Physics,156,95-104.
MLA M. A.,et al."Adsorption and corrosion inhibiting effect of riboflavin on Q235 mild steel corrosion in acidic environments".Materials Chemistry and Physics 156(2015):95-104.
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