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Characterization, electrochemical and theoretical study of the anticorrosion properties of Moringa oleifera extract
Njoku, Demian I.; Oguzie, Emeka E.; Li, Ying; Li, Y (reprint author), Chinese Acad Sci, Inst Met Res, 62 Wencui Rd, Shenyang 110016, Peoples R China.
2017-07-01
Source PublicationJOURNAL OF MOLECULAR LIQUIDS
ISSN0167-7322
Volume237Pages:247-256
AbstractWe describe a combined experimental and density functional study of the corrosion protection of Q235 carbon steel in 0.25 M H2SO4 + 0.5 M NaCl solution by Moringa oleifera extract. The extract was characterized for this purpose using Furrier transformed infra-red spectroscopy (FTIR) and gas chromatography interfaced with mass spectroscopy (GC-MS). Corrosion protection efficiency increased with extract concentration but decreased slightly over prolonged exposure time. The various electrochemical and spectroscopic measurements revealed adsorption of organic constituents of the extract on the steel surface, while the protective effect of the adsorbed extract constituents was confirmed by surface microscopy examinations. Density functional theory calculations were undertaken to describe the electronic and adsorption properties of the constituents identified in the extract. (C) 2017 Published by Elsevier B.V.; We describe a combined experimental and density functional study of the corrosion protection of Q235 carbon steel in 0.25 M H2SO4 + 0.5 M NaCl solution by Moringa oleifera extract. The extract was characterized for this purpose using Furrier transformed infra-red spectroscopy (FTIR) and gas chromatography interfaced with mass spectroscopy (GC-MS). Corrosion protection efficiency increased with extract concentration but decreased slightly over prolonged exposure time. The various electrochemical and spectroscopic measurements revealed adsorption of organic constituents of the extract on the steel surface, while the protective effect of the adsorbed extract constituents was confirmed by surface microscopy examinations. Density functional theory calculations were undertaken to describe the electronic and adsorption properties of the constituents identified in the extract. (C) 2017 Published by Elsevier B.V.
description.department[njoku, demian i.] univ chinese acad sci, inst met res, 19a yuquan rd, beijing 100049, peoples r china ; [njoku, demian i. ; oguzie, emeka e. ; li, ying] chinese acad sci, inst met res, 62 wencui rd, shenyang 110016, peoples r china ; [oguzie, emeka e.] fed univ technol owerri, dept chem, electrochem & mat sci res lab, pmb 1526, owerri, nigeria
KeywordCarbon Steel Nacl/h2so4 Gc-ms Ftir Adsorption Molecular Dynamics
Subject AreaChemistry, Physical ; Physics, Atomic, Molecular & Chemical
Funding OrganizationCAS President's International Fellowship Initiative Program; National Natural Science Foundation of China-International Cooperation and Exchange Program [2015PT005]; National Natural Science Fund of China [51131007, 51371181]
Indexed BySCI
Language英语
WOS IDWOS:000403510900031
Citation statistics
Cited Times:17[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/78065
Collection中国科学院金属研究所
Corresponding AuthorLi, Y (reprint author), Chinese Acad Sci, Inst Met Res, 62 Wencui Rd, Shenyang 110016, Peoples R China.
Recommended Citation
GB/T 7714
Njoku, Demian I.,Oguzie, Emeka E.,Li, Ying,et al. Characterization, electrochemical and theoretical study of the anticorrosion properties of Moringa oleifera extract[J]. JOURNAL OF MOLECULAR LIQUIDS,2017,237:247-256.
APA Njoku, Demian I.,Oguzie, Emeka E.,Li, Ying,&Li, Y .(2017).Characterization, electrochemical and theoretical study of the anticorrosion properties of Moringa oleifera extract.JOURNAL OF MOLECULAR LIQUIDS,237,247-256.
MLA Njoku, Demian I.,et al."Characterization, electrochemical and theoretical study of the anticorrosion properties of Moringa oleifera extract".JOURNAL OF MOLECULAR LIQUIDS 237(2017):247-256.
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