Adsorption and inhibition properties of mild steel corrosion in ground water medium by 1‐(4‐methoxy benzyl)‐1H‐imidazole: experimental and theoretical investigations
作者： D. Gopi , M. Surendiran , N. Sudha , R. Saraswathy , R. Madhammal
DOI: 10.1002/SIA.5171
关键词: Corrosion 、 Electrochemistry 、 Inorganic chemistry 、 HOMO/LUMO 、 Langmuir adsorption model 、 Imidazole 、 Adsorption 、 Corrosion inhibitor 、 Chemistry 、 Density functional theory
摘要: Corrosion inhibitive performance of a newly synthesized imidazole derivative 1-(4-methoxy benzyl)-1H- (MBI) on mild steel in ground water medium was investigated. Gravimetric and electrochemical measurements incorporated with quantum chemical calculation were used to study the corrosion inhibition characteristics MBI medium. The efficiency increased increase inhibitor concentration, while adsorption followed Langmuir isotherm. To clarify for prevention medium, density functional theory also carried out using 6-31 G* basis set. Quantum descriptors such as energy highest occupied molecular orbital, lowest unoccupied potential (Pi), electronegativity (χ), global hardness (η), softness (σ), gap (ΔE), dipole moment (μ) calculated. calculations based results show that new can adsorb surface, which forms barrier against corrosion. Thus, acts good Copyright © 2012 John Wiley & Sons, Ltd.
sci-hub.se 参考文章(30)
El Sayed H. El Ashry, Ahmed El Nemr, Sami A. Esawy, Safaa Ragab, Corrosion inhibitors Electrochimica Acta. ,vol. 51, pp. 3957- 3968 ,(2006) , 10.1016/J.ELECTACTA.2005.11.010
Gökhan Gece, Semra Bilgiç, A theoretical study on the inhibition efficiencies of some amino acids as corrosion inhibitors of nickel Corrosion Science. ,vol. 52, pp. 3435- 3443 ,(2010) , 10.1016/J.CORSCI.2010.06.015
D. Gopi, S. Manimozhi, K. M. Govindaraju, P. Manisankar, S. Rajeswari, Surface and electrochemical characterization of pitting corrosion behaviour of 304 stainless steel in ground water media Journal of Applied Electrochemistry. ,vol. 37, pp. 439- 449 ,(2007) , 10.1007/S10800-006-9274-0
D. Gopi, K. M. Govindaraju, S. Manimozhi, S. Ramesh, S. Rajeswari, Inhibitors with biocidal functionalities to mitigate corrosion on mild steel in natural aqueous environment Journal of Applied Electrochemistry. ,vol. 37, pp. 681- 689 ,(2007) , 10.1007/S10800-007-9300-X
Ishtiaque Ahamad, Rajendra Prasad, MA Quraishi, None, Thermodynamic, electrochemical and quantum chemical investigation of some Schiff bases as corrosion inhibitors for mild steel in hydrochloric acid solutions Corrosion Science. ,vol. 52, pp. 933- 942 ,(2010) , 10.1016/J.CORSCI.2009.11.016
K. M. Govindaraju, D. Gopi, L. Kavitha, Inhibiting effects of 4-amino-antipyrine based schiff base derivatives on the corrosion of mild steel in hydrochloric acid Journal of Applied Electrochemistry. ,vol. 39, pp. 2345- 2352 ,(2009) , 10.1007/S10800-009-9920-4
M.S. Masoud, M.K. Awad, M.A. Shaker, M.M.T. El-Tahawy, The role of structural chemistry in the inhibitive performance of some aminopyrimidines on the corrosion of steel Corrosion Science. ,vol. 52, pp. 2387- 2396 ,(2010) , 10.1016/J.CORSCI.2010.04.011
J. Aljourani, M.A. Golozar, K. Raeissi, The inhibition of carbon steel corrosion in hydrochloric and sulfuric acid media using some benzimidazole derivatives Materials Chemistry and Physics. ,vol. 121, pp. 320- 325 ,(2010) , 10.1016/J.MATCHEMPHYS.2010.01.040
E. McCafferty, Norman Hackerman, Double Layer Capacitance of Iron and Corrosion Inhibition with Polymethylene Diamines Journal of The Electrochemical Society. ,vol. 119, pp. 146- 154 ,(1972) , 10.1149/1.2404150
IB Obot, NO Obi-Egbedi, NW Odozi, None, Acenaphtho [1,2-b] quinoxaline as a novel corrosion inhibitor for mild steel in 0.5 M H2SO4 Corrosion Science. ,vol. 52, pp. 923- 926 ,(2010) , 10.1016/J.CORSCI.2009.11.013