Experimental and In-Silico Computational Modeling of Cerium Oxide Nanoparticles Functionalized by Gelatin as an Eco-Friendly Anti-Corrosion Barrier on X60 Steel Alloys in Acidic Environments

Abstract

An eco-friendly and a facile route successfully prepared novel cerium oxide nanoparticles functionalized by gelatin. The introduced CeO2@gelatin was investigated in terms of FE-SEM, EDX, TEM, chemical mapping, FT-IR, and (TGA) thermal analyses. These characterization tools indicate the successful synthesis of a material having CeO2 and gelatin as a composite material. The prepared composite CeO2@gelatin was used as an environment-friendly coated film or X60 steel alloys in acidizing oil well medium. Moreover, the effect of CeO2 percent on film composition was investigated. LPR corrosion rate, Eocp-time, EIS, and PDP tools determined the corrosion protection capacity. The CeO2@gelatin composite exhibited high protection capacity compared to pure gelatin; in particular, 5.0% CeO2@gelatin coating film shows the highest protection capacity (98.2%), with long-term anti-corrosive features. The % CeO2@gelatin-coated films formed the protective adsorbed layer on the steel interface by developing a strong bond among nitrogen atoms in the CeO2@gelatin film and the electrode interface. Surface morphology using FESEM measurements confirmed the high efficiency of the fabricated CeO2@gelatin composite on the protection X60 steel alloys. DFT calculations and MC simulations were explored to study the relations between the protection action and the molecular construction of the coated systems, which were in good alignment with the empirical findings.

Bishydrazone ligand and its Zn-complex: synthesis, characterization and estimation of scalability inhibition mitigation effectiveness for API 5L X70 carbon steel in 3.5% NaCl solutions

“…Hence, a greater dipole moment contributes to a greater inhibiting proficiency. 76 As outlined in Table 8 , the Zn-H 2 TTAH compound possesses a larger dipole moment value (18.80 debye) in comparison to the H 2 TTAH molecule (14.99 debye), indicating a higher tendency for adsorption on the steel interface and an enhanced prohibition capability. Additionally, there exists a clear association between the surface area of molecules of the Zn-H 2 TTAH and H 2 TTAH molecules and their ability to protect the X-70 surface in destructive media.…”

Caffeine Release from Magneto-Responsive Hydrogels Controlled by External Magnetic Field and Calcium Ions and Its Effect on the Viability of Neuronal Cells

“…All samples presented a mass loss in the range from 25 °C to 150 °C due to the release of water molecules, which ranged from 11.5 wt% to 6.9 wt% ( Table 1 ). All samples also presented a mass loss of ~60 wt% in the range from 150 °C to 500 °C due to the decomposition of alginate [ 30 , 53 ] and gelatin [ 54 , 55 ]. The main decomposition peaks (T dec ) appeared in the temperature range of 320 °C to 340 °C ( Table 1 ).…”

“…Different models (such as the zero-order, first-order, Higuchi, Hixson–Crowell, Korsmeyer–Peppas, Baker, Lonsdale, Weibull, Hopfenberg, and Cooney models) consider various effects such as matrix dissolution, swelling, erosion, and drug diffusion [ 65 ]. The Higuchi and Korsmeyer–Peppas models are commonly applied to describe drug delivery from polymers and hydrogels [ 30 , 46 , 53 , 54 ]. According to Higuchi’s model, a drug diffuses freely from a porous matrix to a medium in accordance with Fick’s law, and matrix swelling is negligible, whereas Korsmeyer–Peppas’s model concerns a drug’s transport through a swellable matrix [ 66 , 67 , 68 ].…”

“…The statistical analysis carried out for the fitting parameters obtained from the Korsmeyer–Peppas model ( Figure S13 ) clearly showed that the addition of MNP increased the degree of affinity between CAF and the matrix because n increased and k KP decreased, particularly at pH 5.5 at 25 °C, pH 5.5 at 37 °C, and in PBS at pH 7.4 and 37 °C ( p < 0.05, p < 0.0005, and p < 0.05, respectively). This effect might be due to hydrogen bonds between CAF carbonyl groups and MNP hydroxyl groups, which decreased the release of CAF [ 51 , 54 ].…”

Cold-Sprayed Composite Metal-Fluoropolymer Coatings for Alloy Protection against Corrosion and Wear

“…However, the most rational, effective, and inexpensive method of protection is the application of coatings [13][14][15][16][17][18][19][20][21][22][23][24][25][26][27][28][29]. It is possible to use a paintwork material [13,19,30] (including those with additives of nanoparticles [25,[31][32][33][34][35][36][37][38] and inhibitors [13,14,20,[39][40][41][42][43][44][45][46][47]) and zinc coating to protect the material against its intensive destruction [48]. There is also a plasma electrolytic oxidation (PEO) method that allows one to create dense heterooxide coatings on valve metals (for example, Al, Mg, Ti, Nb, etc.)…”