Corrosion mitigation characteristics of some novel organoselenium thiourea derivatives for acid pickling of C1018 steel via experimental and theoretical study

Hany M Abd El-Lateef; Mai M Khalaf; Mohamed Gouda; T A Yousef; Sayed H Kenawy; Mortaga M Abou-Krisha; Mohamed Alaasar; Saad Shaaban

doi:10.1038/s41598-023-36222-0

Corrosion mitigation characteristics of some novel organoselenium thiourea derivatives for acid pickling of C1018 steel via experimental and theoretical study

Sci Rep. 2023 Jun 3;13(1):9058. doi: 10.1038/s41598-023-36222-0.

Authors

Hany M Abd El-Lateef^{1

2}, Mai M Khalaf^{3

4}, Mohamed Gouda³, T A Yousef^{5

6}, Sayed H Kenawy^{5

7}, Mortaga M Abou-Krisha^{5

8}, Mohamed Alaasar^{9

10}, Saad Shaaban^{11

12}

Affiliations

¹ Department of Chemistry, College of Science, King Faisal University, 31982, Al-Hasa, Saudi Arabia. hmahmed@kfu.edu.sa.
² Department of Chemistry, Faculty of Science, Sohag University, Sohag, 82524, Egypt. hmahmed@kfu.edu.sa.
³ Department of Chemistry, College of Science, King Faisal University, 31982, Al-Hasa, Saudi Arabia.
⁴ Department of Chemistry, Faculty of Science, Sohag University, Sohag, 82524, Egypt.
⁵ College of Science, Chemistry Department, Imam Mohammad Ibn Saud Islamic University (IMSIU), 11623, Riyadh, Kingdom of Saudi Arabia.
⁶ Department of Toxic and Narcotic Drug, Forensic Medicine, Mansoura Laboratory, Medicolegal Organization, Ministry of Justice, Mansoura, Egypt.
⁷ Refractories, Ceramics and Building Materials Department, National Research Centre, El-Buhouth St., Dokki, Giza, 12622, Egypt.
⁸ Department of Chemistry, South Valley University, Qena, 83523, Egypt.
⁹ Institute of Chemistry, Martin Luther University Halle-Wittenberg, Halle, Germany.
¹⁰ Department of Chemistry, Faculty of Science, Cairo University, Giza, Egypt.
¹¹ Department of Chemistry, College of Science, King Faisal University, 31982, Al-Hasa, Saudi Arabia. sibrahim@kfu.edu.sa.
¹² Department of Chemistry, Faculty of Science, Mansoura University, Mansoura, 35516, Egypt. sibrahim@kfu.edu.sa.

Abstract

Two organoselenium thiourea derivatives, 1-(4-(methylselanyl)phenyl)-3-phenylthiourea (DS036) and 1-(4-(benzylselanyl)phenyl)-3-phenylthiourea (DS038) were produced and categorized using FTIR and NMR (¹H and ¹³C). The effectiveness of the above two compounds as C-steel corrosion inhibitors in molar HCl was evaluated using the potentiodynamic polarization (PD) and electrochemical impedance spectroscopy (EIS) techniques. PD findings indicate that DS036 and DS038 have mixed-type features. EIS results show that growing their dose not only changes the polarization resistance of C-steel from 18.53 to 363.64 and 463.15 Ω cm² but also alters the double layer capacitance from 710.9 to 49.7 and 20.5 μF cm^-2 in the occurrence of 1.0 mM of DS036 and DS038, respectively. At a 1.0 mM dose, the organoselenium thiourea derivatives displayed the highest inhibition efficiency of 96.65% and 98.54%. The inhibitory molecule adsorption proceeded along the Langmuir isotherm on the steel substrate. The adsorption-free energy of the adsorption process was also intended and indicated a combined chemical and physical adsorption on the C-steel interface. FE-SEM studies support the adsorption and protective abilities of the OSe-based molecule inhibitor systems. In Silico calculations (DFT and MC simulations) explored the attraction between the studied organoselenium thiourea derivatives and corrosive solution anions on a Fe (110) surface. The obtained results show that these compounds can make a suitable preventing surface and control the corrosion rate.

Abstract

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