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Outstanding anticorrosion and adsorption properties of 2-amino-6-methoxybenzothiazole on Q235 and X70 carbon steels: Effect of time, XPS, electrochemical and theoretical considerations
Njoku, Demian, I1,7; Okafor, Peter C.2,3; Lgaz, Hassane4,6; Uwakwe, Kelechi J.5; Oguzie, Emeka E.1,7; Li, Ying1
Corresponding AuthorOkafor, Peter C.(pcokafor@unical.edu.ng) ; Li, Ying(liying@imr.ac.cn)
2021-02-15
Source PublicationJOURNAL OF MOLECULAR LIQUIDS
ISSN0167-7322
Volume324Pages:18
AbstractThe corrosion inhibitory properties of 2-amino-6-methoxybenzothiazole (2AMB) on Q235 and X70 steels in 0.25MH(2)SO(4)+ 0.5MNaCl solutions was investigated using combined experimental and theoretical approaches. The impedance data for the inhibited systems taken over lengthened immersion times revealed somewhat increasing film resistances with increasing immersion times which is related to the formation process of dense self-assemble monolayer (SAM) film on the steel surface causing a striking increase in inhibition efficiency over time. The polarization data showed that the 2AMB SAM-film remarkably lowered both the anodic and cathodic current densities. Following the protonation of 2AMB, the adsorption of the 2AMB species which obeyed the Langmuir adsorption isotherm involved a combination of physisorption and chemisorption processes. The interaction of 2AMB with the steels was confirmed by intensive XPS characterization, while the physical protective effect was revealed with scanning electron micrographs (SEM). Computational data complemented the experimental data in affording insights on the role of the electronic properties of 2AMB on its interaction and adsorption on steels. (C) 2020 Elsevier B.V. All rights reserved.
KeywordAdsorption Corrosion inhibition DFT EIS Carbon steel Self-assembled film Molecular dynamics
Funding OrganizationNational Natural Science Fund of China ; Chinese Academy of Sciences
DOI10.1016/j.molliq.2020.114663
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Fund of China[51871227] ; National Natural Science Fund of China[51671198] ; Chinese Academy of Sciences[2019VEA0030]
WOS Research AreaChemistry ; Physics
WOS SubjectChemistry, Physical ; Physics, Atomic, Molecular & Chemical
WOS IDWOS:000632343700005
PublisherELSEVIER
Citation statistics
Cited Times:5[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/162138
Collection中国科学院金属研究所
Corresponding AuthorOkafor, Peter C.; Li, Ying
Affiliation1.Chinese Acad Sci, Inst Met Res, Lab Corros & Protect, 62 Wencui Rd, Shenyang 110016, Liaoning, Peoples R China
2.Chinese Acad Sci, Inst Met Res, CAS Key Lab Nucl Mat & Safety Assessment, 62 Wencui Rd, Shenyang 110016, Liaoning, Peoples R China
3.Univ Calabar, Dept Pure & Appl Chem, Corros & Electrochem Res Grp, Calabar 1115, Nigeria
4.Univ Ibn Tofail, Fac Sci, Lab Separat Proc, POB 242, Kenitra, Morocco
5.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian, Liaoning, Peoples R China
6.Konkuk Univ, Coll Sanghur Life Sci, Dept Crop Sci, Seoul 05029, South Korea
7.Fed Univ Technol Owerri, Africa Ctr Excellence Future Energies & Electroch, PMB 1526 Owerri, Owerri, Imo State, Nigeria
Recommended Citation
GB/T 7714
Njoku, Demian, I,Okafor, Peter C.,Lgaz, Hassane,et al. Outstanding anticorrosion and adsorption properties of 2-amino-6-methoxybenzothiazole on Q235 and X70 carbon steels: Effect of time, XPS, electrochemical and theoretical considerations[J]. JOURNAL OF MOLECULAR LIQUIDS,2021,324:18.
APA Njoku, Demian, I,Okafor, Peter C.,Lgaz, Hassane,Uwakwe, Kelechi J.,Oguzie, Emeka E.,&Li, Ying.(2021).Outstanding anticorrosion and adsorption properties of 2-amino-6-methoxybenzothiazole on Q235 and X70 carbon steels: Effect of time, XPS, electrochemical and theoretical considerations.JOURNAL OF MOLECULAR LIQUIDS,324,18.
MLA Njoku, Demian, I,et al."Outstanding anticorrosion and adsorption properties of 2-amino-6-methoxybenzothiazole on Q235 and X70 carbon steels: Effect of time, XPS, electrochemical and theoretical considerations".JOURNAL OF MOLECULAR LIQUIDS 324(2021):18.
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