Insight into the corrosion inhibition property of Artocarpus heterophyllus Lam leaves extract

•Electrochemical test data indicate AHLLE belong to the mixed-type corrosion inhibitor.•Surface characteristics analysis provided that AHLLE exhibit excellent corrosion inhibition nature.•AHLLE adsorb on the copper/solution surface in accordance with the Langmuir model. In this work, the method (wat...

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Bibliographic Details
Published in:Journal of industrial and engineering chemistry (Seoul, Korea) 2021, 102(0), , pp.260-270
Main Authors: He, Jiahong, Xu, Qiang, Li, Guoqiang, Li, Qiang, Marzouki, Riadh, Li, Wenpo
Format: Article
Language:English
Subjects:
Artocarpus heterophyllus Lam leaves
Artocarpus heterophyllus Lam leaves extract
Copper
Corrosion inhibitor
H2SO4
화학공학
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Summary:•Electrochemical test data indicate AHLLE belong to the mixed-type corrosion inhibitor.•Surface characteristics analysis provided that AHLLE exhibit excellent corrosion inhibition nature.•AHLLE adsorb on the copper/solution surface in accordance with the Langmuir model. In this work, the method (water extraction way) was uesd to acquire Artocarpus heterophyllus Lam leaves extract (AHLLE). We refer to the relevant references on the composition of Artocarpus heterophyllus Lam leaves and perform Fourier infrared spectroscopy analysis for AHLLE. It can be concluded that AHLLE contains 2-(2,4-dihydroxyphenyl)-5,7-dihydroxy-4H-chromen-4-one (DPD), (2R,3R)-2-(2,4-dihydroxyphenyl)-3 ,5,7-trihydroxychroman-4-one (DPT), 3-(4-hydroxyphenyl)acrylic acid (HPT), and 5-(6-hydroxybenzofuran-2-yl)benzene-1,3-diol (HBB). Quantum chemical calculations (QCC) data and molecular dynamics (MD) simulations results show that DPD, DPT, HPT, and HBB all have the potential of excellent corrosion inhibitors. Scanning electron microscope (SEM) results and atomic force microscope (AFM) test results show that after adding AHLLE to H2SO4 environment, the copper surface is still correspondingly flat. In addition, the results of electrochemical experiments indicate that the AHLLE is 500 ppm, the anti-corrosion efficiency obtained from electrochemical impedance spectroscopy data can reach 97.3%. With the temperature augments to 313 K, the corrosion inhibition nature of AHLLE can still be maintained to 97%. AHLLE is adsorbed onto the Cu surface and belongs to Langmuir monolayer adsorption.
ISSN:1226-086X
1876-794X
DOI:10.1016/j.jiec.2021.07.007