Hydrazone-based green corrosion inhibitors for API grade carbon steel in HCl: Insights from electrochemical, XPS, and computational studies

Inhibition Mechanism of Some Vinylalkylimidazolium-Based Polymeric Ionic Liquids against Acid Corrosion of API 5L X60 Steel: Electrochemical and Surface Studies

“…The characteristic C 1s signals of the sample are observed in Figure . The peak at 284.8 eV is related to adventitious carbon and is characteristic of C–C/C–H/CC bonds, whereas the signal at 286.4 eV is associated with C–O/C–N/CN bonds. ,,, The CO bonds were detected with the signal at 288.5 eV. , The previous C bonds are related to the monomeric part and polymeric skeleton of the PILs. Based on the signals localized in the N 1s and C 1s spectra, it can be stated that the presence of C and N atoms on the metal surface is related to the bonds present in the imidazolium ring, amide group, and/or imidazolate of the CIs poly­[VIMC4]­[Im], poly­[VIMC2]­[Br], and poly­[VIMC4]­[Br] and suggests that their adsorption process occurred mainly from the N heteroatoms.…”

“…These corrosion products deposited on the metal surface occurred due to their interaction with O 2– , OH – , and SO 4 2– ions. 71 − 74 The signal at 532.9 eV also suggests the presence of C=O bonds. 75 The localized Fe 2p 3/2 and Fe 2p 1/2 peaks are shown in Figure 10 .…”

“…The localized Fe 2p 3/2 and Fe 2p 1/2 peaks are shown in Figure . The Fe 2p 3/2 signals were the following: the peak at 711.2 eV characterizes Fe 2+ (e.g., FeSO 4 ·H 2 O), and the 713.5 and 714.2 eV signals correspond to the satellite peak of ferric compounds Fe 3+ (e.g., Fe 2 O 3 , Fe 3 O 4 , and FeOOH). − The Fe 2p 1/2 signals, which are Fe 2p 3/2 doublets, were located at 719.2, 724.5, and 727.4 eV. The bond energies of ∼714 and ∼727 eV and Fe 3+ satellite peak at ∼719 eV confirm the presence of Fe 3 O 4 . , In contrast, the energies of ∼710 and ∼724 eV confirm the oxidation of the steel sample, promoting the Fe dissolution.…”

“…The characteristic C 1s signals of the sample are observed in Figure 12 . The peak at 284.8 eV is related to adventitious carbon 85 and is characteristic of C–C/C–H/C=C bonds, 71 whereas the signal at 286.4 eV is associated with C–O/C–N/C=N bonds. 72 , 73 , 80 , 86 The C=O bonds were detected with the signal at 288.5 eV.…”

Inhibitory Potential of New Phenolic Hydrazide-Hydrazones with a Decoy Substrate Fragment towards Laccase from a Phytopathogenic Fungus: SAR and Molecular Docking Studies

“…They undergo easy dehydration to 1,3,4-oxadiazoles that present a variety of biological activities [33,34]. Hydrazide-hydrazones provide interesting properties in the field of supramolecular architecture [35][36][37][38][39], organic synthesis [33,40], chemo-and physical imaging [41][42][43][44], coordination [45][46][47][48][49], and in inorganic chemistry [50][51][52][53]. The numerous biologically active hydrazide-hydrazones are particularly worth paying attention to [54].…”