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Mengqin Zhang,Lei Guo,Mengyue Zhu,Kai Wang,Renhui Zhang,Zhongyi He,Yuanhua Lin,Senlin Leng,Valentine Chikaodili Anadebe,Xingwen Zheng 한국공업화학회 2021 Journal of Industrial and Engineering Chemistry Vol.101 No.-
In this account, pectin components were obtained from akebia trifoliate koiaz peels with the acid extractiontechnology. The chemical constituent of the akebia trifoliate koiaz peels extract (ATKPE) was analyzedand its anti-corrosion performance for mild steel in HCl medium was investigated byelectrochemical methods, surface analysis and theoretical calculations. Experimental results show thatATKPE exhibits excellent corrosion inhibition characteristic, and its inhibition efficiency can be as highas 90% when the concentration of ATKPE is 800 mg/L. Electrochemical measurements show that ATKPEis a mixed-type corrosion inhibitor consisting with Langmuir adsorption model. In addition, SEM, AFMand contact angle observations suggests that the ATKPE may attach firmly to the metal surface by forminga barrier film. XPS and ATR-FTIR results further verify the bonding interaction between the functionalgroups and steel substrate. Meanwhile, quantum chemical calculations and molecular dynamics (MD)simulations were performed to reveal the inhibition mechanism at molecular/atomic level. In brief, ourfindings demonstrate a novel environmentally benign, efficient corrosion inhibitor for steel protection inacidic media.