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Synthesis and characterization of a new nonionic surfactant with anticorrosive activity of aluminum in 1.0 M hydrochloric acid solution

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New nonionic surfactant LMAEO-3 has been synthesized and characterized using Fourier-transform infrared spectroscopy (FT-IR) and proton nuclear magnetic resonance (1HNMR). An analysis of the critical micelle concentration (CMC) ratio was conducted, which reached 11 × 10−5 M. This surfactant protected aluminum from reacting with 1.0 M hydrochloric acid. In the process of checking its efficiency, electrochemical impedance spectroscopy (EIS) was employed. The double layer's resistance and capacity increased significantly due to the experiment, and it had a percentage of efficiency of 82.8%. Further, the potentiodynamic polarization study demonstrated that LMAEO-3 is a mixed-type inhibitor that inhibits current density as surfactant concentrations increase, making sense from electron frequency modulation (EFM). Observe how Langmuir's theory applies to the adsorption of this surfactant on aluminum. These results were in agreement with the theoretical results derived from Materials Studio and atomic force microscopy (AFM) testing results, which demonstrated the smoothness of the aluminum surface when only exposed to hydrochloric acid in the presence of a surfactant.

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This work has done by BAAJ.

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Correspondence to Badreah A. Al Jahdaly.

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Al Jahdaly, B.A. Synthesis and characterization of a new nonionic surfactant with anticorrosive activity of aluminum in 1.0 M hydrochloric acid solution. Chem. Pap. 77, 33–45 (2023). https://doi.org/10.1007/s11696-022-02429-0

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  • DOI: https://doi.org/10.1007/s11696-022-02429-0

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