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Enhanced corrosion inhibitive effect of p-methoxybenzylidene-4,4 '-dimorpholine assembled on nickel oxide nanoparticles for mild steel in acid medium

机译:增强p-甲氧基苄基-4,4'-二卟啉在氧化镍纳米粒子上组装在酸性介质中的氧化镍纳米粒子上的腐蚀抑制作用

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摘要

The corrosion inhibition efficiency of p-methoxybenzylidene-4,4'-dimorpholine (p-MBDM) and p-MBDM assembled on nickel oxide nanoparticles (NiONPs) was investigated using three techniques: weight loss, electrochemical impedance spectroscopy (EIS), and galvanostatic polarization. For the first time, p-MBDM and p-MBDM assembled on NiONPs were used as efficient inhibitors for mild steel (MS) in 2 M hydrochloric acid (HCl) solution. From weight loss measurements, the results show that the inhibition efficiency increases with an increase in inhibitor concentration. Moreover, with increasing temperature, the inhibition efficiency increases for p-MBDM assembled on NiONPs, whereas it decreases for p-MBDM only. EIS spectra demonstrate that the charge transfer resistance in the case of p-MBDM assembled on NiONPs is comparatively more than that of p-MBDM. Analysis of polarization data indicates that both inhibitors act as mixed type inhibitors. The present study reveals that p-MBDM assembled on NiONPs is more efficient than p-MBDM alone. Additionally, the characterization of synthesized products was performed by proton nuclear magnetic resonance (H-1 NMR), transmission electron microscopy (TEM), dynamic light scattering (DLS), Fourier transform infrared (FTIR) spectroscopy, powder X-ray diffraction (PXRD), and electrospray ionisation mass spectrometry (ESI-MS). The surface morphology of the MS was further carried out by scanning electron microscopy (SEM) and atomic force microscopy (AFM).
机译:采用三种技术研究了对氧化镍纳米粒子(NIONPS)上的p-甲氧基苄基-4,4'-二核(P-MBDM)和P-MBDM的腐蚀抑制效率:体重减轻,电化学阻抗光谱(EIS)和电压静验极化。首次,在NIONPS上组装的P-MBDM和P-MBDM在2M盐酸(HCl)溶液中用作温和钢(MS)的有效抑制剂。从减肥测量,结果表明,抑制效率随抑制剂浓度的增加而增加。此外,随着温度的升高,P-MBDM在NIONP上组装的抑制效率增加,而仅对P-MBDM降低。 EIS谱证明,在对 - MBDM的情况下的电荷转移电阻组装在NiONPs相对更重要的是对 - MBDM的。偏振数据分析表明,两种抑制剂都充当混合型抑制剂。本研究表明,P-MBDM组装在NIONPS上比单独的P-MBDM更有效。另外,通过质子核磁共振(H-1 NMR),透射电子显微镜(TEM),动态光散射(DLS),傅里叶变换红外(FTIR)光谱,粉末X射线衍射(PXRD)进行合成产物的表征)和电喷雾电离质谱(ESI-MS)。通过扫描电子显微镜(SEM)和原子力显微镜(AFM)进一步进行MS的表面形态。

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  • 来源
    《RSC Advances》 |2015年第10期|共14页
  • 作者单位

    Gujarat Univ Sch Sci Dept Chem Ahmadabad 380009 Gujarat India;

    Gujarat Univ Sch Sci Dept Chem Ahmadabad 380009 Gujarat India;

    RG Shah Sci Coll Ahmadabad 382170 Gujarat India;

    Gujarat Univ Sch Sci Dept Chem Ahmadabad 380009 Gujarat India;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
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