Insights into the adsorption and corrosion inhibition properties of newly synthesized diazinyl derivatives for mild steel in hydrochloric acid: synthesis, electrochemical, SRB biological resistivity and quantum chemical calculations.

Autor: Bedair MA; Department of Chemistry, Faculty of Science (Men's Campus), Al-Azhar University Nasr City 11884 Cairo Egypt m_bedier@azhar.edu.eg m_bedier@yahoo.com.; College of Science and Arts, University of Bisha P.O. Box 101 Al-Namas 61977 Saudi Arabia mbedair@ub.edu.sa., Elaryian HM; Department of Chemistry, Faculty of Science (Men's Campus), Al-Azhar University Nasr City 11884 Cairo Egypt m_bedier@azhar.edu.eg m_bedier@yahoo.com.; Zohr Gas Field, Belayim Petroleum Company Nasr City 7074 Cairo Egypt., Gad ES; Chemistry Department, College of Science and Arts, Jouf University Saudi Arabia.; Department of Chemistry, Faculty of Science (Men's Campus), Al-Azhar University Nasr City 11884 Cairo Egypt m_bedier@azhar.edu.eg m_bedier@yahoo.com., Alshareef M; Department of Chemistry, Faculty of Applied Science, Umm Al Qura University Makkah 24230 Saudi Arabia mmshreef@uqu.edu.sa., Bedair AH; Department of Chemistry, Faculty of Science (Men's Campus), Al-Azhar University Nasr City 11884 Cairo Egypt m_bedier@azhar.edu.eg m_bedier@yahoo.com., Aboushahba RM; Department of Chemistry, Faculty of Science (Girl's Branch), Al-Azhar University Nasr City 11574 Cairo Egypt., Fouda AES; Department of Chemistry, Faculty of Science, Mansoura University Mansoura-35516 Egypt asfouda@hotmail.com.
Jazyk: angličtina
Zdroj: RSC advances [RSC Adv] 2022 Dec 22; Vol. 13 (1), pp. 478-498. Date of Electronic Publication: 2022 Dec 22 (Print Publication: 2022).
DOI: 10.1039/d2ra06574f
Abstrakt: Two azo derivatives, 4-((4-hydroxy-3-((4-oxo-2-thioxothiazolidin-5-ylidene)methyl)phenyl) diazinyl) benzenesulfonic acid (TODB) and 4-((3-((4,4-dimethyl-2,6-dioxocyclohexylidene) methyl)-4-hydroxyphenyl)diazinyl) benzenesulfonic acid (DODB) were synthesized and characterized using Fourier-transform infrared spectroscopy (FTIR), proton nuclear magnetic resonance ( 1 H-NMR) and mass spectral studies. Gravimetric methods, potentiodynamic polarization (PDP), electrochemical impedance spectroscopy (EIS), electrochemical frequency modulation (EFM) techniques and inductive coupled plasma-optical emission spectroscopy were used to verify the above two compounds' ability to operate as mild steel (MS) corrosion inhibitors in 1 M HCl. Tafel data suggest that TODB and DODB have mixed-type characteristics, and EIS findings demonstrate that increasing their concentration not only alters the charge transfer ( R ct ) of mild steel from 6.88 Ω cm 2 to 112.9 Ω cm 2 but also changes the capacitance of the adsorbed double layer ( C dl ) from 225.36 to 348.36 μF cm -2 . At 7.5 × 10 -4 M concentration, the azo derivatives showed the highest corrosion inhibition of 94.9% and 93.6%. The inhibitory molecule adsorption on the metal substrate followed the Langmuir isotherm. The thermodynamic activation functions of the dissolution process were also calculated as a function of inhibitor concentration. UV-vis, scanning electron microscopy (SEM), and energy dispersive X-ray spectroscopy (EDX) techniques were used to confirm the adsorption phenomenon. The quantum chemical parameters, inductively coupled plasma atomic emission spectroscopy (ICPE) measurements, and the anti-bacterial effect of these new derivatives against sulfate-reducing bacteria (SRB) were also investigated. Taken together, the acquired results demonstrate that these compounds can create an appropriate preventing surface and regulate the corrosion rate.
Competing Interests: The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(This journal is © The Royal Society of Chemistry.)
Databáze: MEDLINE
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