PMID- 37704662 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20231119 IS - 2045-2322 (Electronic) IS - 2045-2322 (Linking) VI - 13 IP - 1 DP - 2023 Sep 13 TI - Electrochemical, surface morphological and computational evaluation on carbohydrazide Schiff bases as corrosion inhibitor for mild steel in acidic medium. PG - 15108 LID - 10.1038/s41598-023-41975-9 [doi] LID - 15108 AB - Anticorrosion and adsorption behaviour of synthesized carbohydrazide Schiff bases, namely (Z)-N'-(4-hydroxy-3-methoxybenzylidene)-6-methyl-2-oxo-4-phenyl-1,2,3,4-tetrahydropyrimidine-5-carbohydrazide(MBTC) and (Z)-N'-(3,4-dichlorobenzylidene)-6-methyl-2-oxo-4-phenyl-1,2,3,4-tetrahydropyrimidine-5-carbohydrazide (CBTC) was examined for mild steel (MS) in 15% HCl medium. The corrosion inhibition study was performed by using gravimetric, thermodynamic, electrochemical and theoretical studies including density functional theory (DFT), molecular dynamic simulation (MDS) and Monte Carlo simulations (MCS). The outcomes in terms of corrosion inhibition efficiency using electrochemical impedance spectroscopy (EIS) method at 303 K and 150 ppm concentration were 96.75% for MBTC and 95.14% for CBTC. Both inhibitors adsorbed on the MS surface through physical as well as chemical adsorption and followed the Langmuir isotherm. The mixed-type nature of both inhibitors was identified by polarization results. Surface analysis was done using FESEM, EDX, AFM and XPS studies and results showed that a protective layer of inhibitor molecules was developed over the surface of MS. The results of DFT, MCS and MDS are in accordance with experimental results obtained by weight loss and electrochemical methods. CI - (c) 2023. Springer Nature Limited. FAU - Gupta, Sujata Kumari AU - Gupta SK AD - Department of Chemistry and Chemical Biology, Indian Institute of Technology (ISM), Dhanbad, Jharkhand, 826004, India. FAU - Mitra, R K AU - Mitra RK AD - Department of Chemistry and Chemical Biology, Indian Institute of Technology (ISM), Dhanbad, Jharkhand, 826004, India. FAU - Yadav, Mahendra AU - Yadav M AD - Department of Chemistry and Chemical Biology, Indian Institute of Technology (ISM), Dhanbad, Jharkhand, 826004, India. mahendra@iitism.ac.in. FAU - Dagdag, Omar AU - Dagdag O AD - Centre for Materials Science, College of Science, Engineering and Technology, University of South Africa, Johannesburg, 1710, South Africa. AD - Institute of Nanotechnology and Water Sustainability, College of Science, Engineering and Technology, University of South Africa, Johannesburg, 1710, South Africa. FAU - Berisha, Avni AU - Berisha A AD - Department of Chemistry, Faculty of Natural and Mathematics Science, University of Prishtina, 10000, Prishtina, Kosovo. FAU - Mamba, Bhekie B AU - Mamba BB AD - Institute of Nanotechnology and Water Sustainability, College of Science, Engineering and Technology, University of South Africa, Johannesburg, 1710, South Africa. FAU - Nkambule, Thabo T I AU - Nkambule TTI AD - Institute of Nanotechnology and Water Sustainability, College of Science, Engineering and Technology, University of South Africa, Johannesburg, 1710, South Africa. FAU - Ebenso, Eno E AU - Ebenso EE AD - Centre for Materials Science, College of Science, Engineering and Technology, University of South Africa, Johannesburg, 1710, South Africa. ebensee@unisa.ac.za. AD - Institute of Nanotechnology and Water Sustainability, College of Science, Engineering and Technology, University of South Africa, Johannesburg, 1710, South Africa. ebensee@unisa.ac.za. FAU - Singh, Shailendra Kumar AU - Singh SK AD - Department of Chemistry, Hansraj College, University of Delhi, Delhi, 110007, India. LA - eng PT - Journal Article DEP - 20230913 PL - England TA - Sci Rep JT - Scientific reports JID - 101563288 SB - IM PMC - PMC10499881 COIS- The authors declare no competing interests. EDAT- 2023/09/14 00:42 MHDA- 2023/09/14 00:43 PMCR- 2023/09/13 CRDT- 2023/09/13 23:21 PHST- 2023/05/24 00:00 [received] PHST- 2023/09/04 00:00 [accepted] PHST- 2023/09/14 00:43 [medline] PHST- 2023/09/14 00:42 [pubmed] PHST- 2023/09/13 23:21 [entrez] PHST- 2023/09/13 00:00 [pmc-release] AID - 10.1038/s41598-023-41975-9 [pii] AID - 41975 [pii] AID - 10.1038/s41598-023-41975-9 [doi] PST - epublish SO - Sci Rep. 2023 Sep 13;13(1):15108. doi: 10.1038/s41598-023-41975-9.