化学
物理吸附
吸附
咪唑
呋喃
腐蚀
朗缪尔吸附模型
重量分析
质子核磁共振
轨道能级差
电化学
核化学
物理化学
无机化学
有机化学
分子
电极
作者
K Loganathan,Venkatesan S. Thimmakondu,Naveen Srinivasan,Ramalingam Natarajan
标识
DOI:10.1016/j.jics.2021.100121
摘要
A novel heterocyclic compound 2-(Furan-2-yl)-4,5-Diphenyl-1H-Imidazole (FDPI) was synthesized by a simple and cost effective one pot synthetic protocol and the structure of FDPI was confirmed by FT-IR, 1H NMR and 13C NMR spectra. The corrosion inhibition activity of FDPI was investigated using gravimetric and electrochemical methods. It resulted a maximum inhibition efficiency of 95.84% at 10 mmolL−1 concentrations of FDPI. The excellent inhibition efficiency is reasoned as the adsorption of FDPI on the mild steel surface as a protective layer immersed in the 1 M HCl. The adsorbed layer obeys Langmuir adsorption isotherm and the ΔGoads values of FDPI suggested that process involves physisorption. The polarization curves showed that the FDPI behaves as a mixed type inhibitor. Surface morphology studied by SEM confirmed the formation of a protective film of FDPI on the mild steel surface. The computational studies using DFT have been analyzed for the FDPI to determine the HOMO-LUMO energy gap.
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