Renewable low-cost brassica rapa subsp. Extract for protection of Q235 steel in H2SO4 medium: Experimental and modeling studies

Yao, Xiuquan; Qiang, Yujie; Guo, Lei; Xu, Qian; Wen, Lei; Jin, Ying

doi:10.1016/j.jiec.2022.07.033

Cited by 21 publications

(1 citation statement)

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“…Applying this extract to mild steel surfaces can suppress or prevent corrosion. Various plant parts have plenty of phytochemicals that are effective corrosion inhibitors. − Plants, being ecologically friendly and plentiful, provide an affordable alternative to hazardous, chemical-based inhibitors. − In industries, there is a high probability of metals getting corroded when they come in contact with a highly corrosive environment due to acid cleaning or pickling of metal surfaces. The utility of this work is that the studied plant extract of the gall of “Pistacia integerrima” can be used as a pickling agent in industries wherever acidic corrosion occurs, and this reduces the corrosion rate of metal by creating a protective layer on the metal surface.…”

Section: Introductionmentioning

confidence: 99%

Electrochemical and DFT Studies of the Pistacia Integerrima Gall Extract: An Eco-friendly Approach towards the Corrosion of Steel in Acidic Medium

Kaur,

Almujibah,

Alam

et al. 2024

ACS Omega

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A novel application of the Pistacia integerrima gall extract as an environmentally friendly corrosion inhibitor is reported in this study. The major phytochemicals present in the gall extract, namely pistagremic acid, β-sitosterol, pistiphloroglucinyl ether, pistaciaphenyl ester, naringenin, and 5,7-dihydroxy-2-(4hydroxyphenyl)-2,3-dihydrochromen-4-one, play key roles in its anticorrosive behavior on steel in aggressive media. Several approaches were used to study the corrosion prevention activity of steel in 1 M H 2 SO 4 , including weight loss analysis, scanning electron microscopy (SEM), electrochemical impedance spectroscopy (EIS), potentiodynamic polarization (PDP), and density functional theory (DFT). At 2000 mg L −1 , the highest efficiency of 92.19% was observed in 1 M H 2 SO 4 . An SEM study was conducted to validate the surface coverage of the metal surface. DFT studies revealed several nucleophilic regions present in the phytochemicals of the inhibitor, which supported the favorable nucleophilicity. Corrosion studies have not been performed on this sample. Phytochemicals make it an effective corrosion inhibitor, and its extraction process utilizes distilled water, making it better than other inhibitors. It has been proven that the obtained values of ΔE Inh DFT for pistiphloroglucinyl, pistaciaphenyl ether, and naringenin organic compounds were very low, confirming the high reactivity of these corrosion inhibitors. The order of the values of ΔE Inh DFT is as follows: pistaciaphenyl ether > pistiphloroglucinyl ether > naringenin organic compound; this suggests that pistaciaphenyl ether is more reactive than the other compounds. In this study, P. integerrima gall extract emerges as a novel and highly effective corrosion resistance agent in 1 M H 2 SO 4 , chosen for its relevance to acid pickling and cleaning processes.

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