Thermodynamic and Adsorption Studies on the Corrosion Inhibition of Zn by 2, 2'-Dithiobis(2,3-dihydro-1,3-benzothiazole) in HCl Solutions
El Wanees, S., Bukhari, A., Alatawi, N., Salem, S., Nooh, S., Mustafa, S., Elyan, S. (2021). Thermodynamic and Adsorption Studies on the Corrosion Inhibition of Zn by 2, 2'-Dithiobis(2,3-dihydro-1,3-benzothiazole) in HCl Solutions. EKB Journal Management System, 64(2), 547-559. doi: 10.21608/ejchem.2020.42128.2849
S El Wanees; Abeer Abdulaziz H. Bukhari; Naifa S. Alatawi; S. Salem; S Nooh; Syed Khalid Mustafa; S. S. Elyan. "Thermodynamic and Adsorption Studies on the Corrosion Inhibition of Zn by 2, 2'-Dithiobis(2,3-dihydro-1,3-benzothiazole) in HCl Solutions". EKB Journal Management System, 64, 2, 2021, 547-559. doi: 10.21608/ejchem.2020.42128.2849
El Wanees, S., Bukhari, A., Alatawi, N., Salem, S., Nooh, S., Mustafa, S., Elyan, S. (2021). 'Thermodynamic and Adsorption Studies on the Corrosion Inhibition of Zn by 2, 2'-Dithiobis(2,3-dihydro-1,3-benzothiazole) in HCl Solutions', EKB Journal Management System, 64(2), pp. 547-559. doi: 10.21608/ejchem.2020.42128.2849
El Wanees, S., Bukhari, A., Alatawi, N., Salem, S., Nooh, S., Mustafa, S., Elyan, S. Thermodynamic and Adsorption Studies on the Corrosion Inhibition of Zn by 2, 2'-Dithiobis(2,3-dihydro-1,3-benzothiazole) in HCl Solutions. EKB Journal Management System, 2021; 64(2): 547-559. doi: 10.21608/ejchem.2020.42128.2849

Thermodynamic and Adsorption Studies on the Corrosion Inhibition of Zn by 2, 2'-Dithiobis(2,3-dihydro-1,3-benzothiazole) in HCl Solutions

Egyptian Journal of Chemistry
Article 1, Volume 64, Issue 2, February 2021, Page 547-559  XML PDF (692.41 K)
Document Type: Original Article
DOI: 10.21608/ejchem.2020.42128.2849
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Authors
S El Wanees email orcid 1, 2; Abeer Abdulaziz H. Bukhari3; Naifa S. Alatawi4; S. Salem5; S Nooh1; Syed Khalid Mustafa3; S. S. Elyan5
1Faculty College of Umlij, University of Tabuk, Umlij, Tabuk, Saudi Arabia
2Chemistry Department, Faculty of Science, Zagazig University, Zagazig 44519, Egypt
3Department of Chemistry, Faculty of Science, University of Tabuk, Tabuk 71421, Saudi Arabia
4Physics Department, Faculty of Science, University of Tabuk, Tabuk 71421, KSA
5Chemistry Department, Faculty of Pharmacy, Badr University, Badr, Egypt
Abstract
The thermodynamics parameters and adsorption mechanism of the 2,2'-dithiobis(2,3-dihydro-1,3-benzothiazole), DDBT, as a corrosion retarder for Zn in 0.5 M HCl solution were studied by different techniques. Potentiodynamic polarization, thermometric and Gravimetric techinques, as well as, SEM surface investigations were employed. The data of different techniques were compatible and confirmed the inhibition effect of DDBT. The potentiodynamic polarization data disclosed that the DTDBT molecules behave as a mixed-kind inhibitor. The different thermodynamic parameters about the corrosion and adsorption processes were deduced to suggest the inhibition mechanism. The DDBT molecules are adsorbed on the C-steel surface confirming the Langmuir isotherm obeying a mixed mechanism (physical and chemisorption).
Keywords
Adsorption; Zinc; Corrosion inhibition; Thermodynamic; Potentiodynamic; Gravimetry; Langmuir isotherm
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