Utilization of ZnO-based materials as anticorrosive agents: a review

Quadri, Taiwo W.; Olasunkanmi, Lukman O.; Fayemi, Omolola E.; Ebenso, Eno E.

doi:10.1016/b978-0-323-90410-0.00010-6

Cited by 6 publications

(2 citation statements)

References 81 publications

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“…It is worth noting that ZnO nanomaterials have drawn significant interest as potential anticorrosive agents compared to conventional anticorrosion substances such as calcium nitrite and organic inhibitors, due to their remarkable proprieties [36][37][38][39]. They offer excellent resistance to corrosion, high thermal stability, a tunable band structure, optical transparency, hydrophobic characteristics, and safety [40]. For instance, calcium nitrite exhibits good corrosion inhibition of steel in concrete; however, it is toxic and very costly [37].…”

Section: Introductionmentioning

confidence: 99%

Insights into the Electronic, Optical, and Anti-Corrosion Properties of Two-Dimensional ZnO: First-Principles Study

Elwahab,

Teleb,

Abdelsalam

et al. 2024

Crystals

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The electronic, optical, and anticorrosion properties of planer ZnO crystal and quantum dots are explored using density functional theory calculations. The calculations for the finite ZnO quantum dots were performed in Gaussian 16 using the B3LYP/6-31g level of theory. The periodic calculations were carried out using VASP with the plane wave basis set and the PBE functional. The subsequent band structure calculations were performed using the hybrid B3LYP functional that shows accurate results and is also consistent with the finite calculations. The considered ZnO nanodots have planer hexagonal shapes with zigzag and armchair terminations. The binding energy calculations show that both structures are stable with negligible deformation at the edges. The ZnO nanodots are semiconductors with a moderate energy gap that decreases when increasing the size, making them potential materials for anticorrosion applications. The values of the electronic energy gaps of ZnO nanodots are confirmed by their UV-Vis spectra, with a wide optical energy gap for the small structures. Additionally, the calculated positive fraction of transferred electrons implies that electron transfer occurs from the inhibitor (ZnO) to the metal surface to passivate their vacant d-orbitals, and eventually prevent corrosion. The best anti-corrosion performance was observed in the periodic ZnO crystal with a suitable energy gap, electronegativity, and fraction of electron transfer. The effects of size and periodicity on the electronic and anticorrosion properties are also here investigated. The findings show that the anticorrosion properties were significantly enhanced by increasing the size of the quantum dot. Periodic ZnO crystals with an appropriate energy gap, electronegativity, and fraction of electron transfer exhibited the optimum anticorrosion performance. Thus, the preferable energy gap in addition to the most promising anticorrosion parameters imply that the monolayer ZnO is a potential candidate for coating and corrosion inhibitors.

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Section: Introductionmentioning

confidence: 99%

Insights into the Electronic, Optical, and Anti-Corrosion Properties of Two-Dimensional ZnO: First-Principles Study

Elwahab,

Teleb,

Abdelsalam

et al. 2024

Crystals

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“…Various inorganic nanoparticles (NPs), in particular, metal oxides, have been investigated as less harmful anticorrosion agents. Among the tested nanomaterials, ZnO NPs have gained increased attention due to their facile synthesis, high UV shielding effect, compatibility with most film-forming materials and cost efficiency [33]. ZnO particles embedded in various coatings show good results in anticorrosion protection as applied on a variety of metallic surfaces [33].…”

Section: Introductionmentioning

confidence: 99%

Hybrid Materials Based on ZnO Nanoparticles and Organo-Modified Silica Coatings as Eco-Friendly Anticorrosive Protection for Metallic Historic Artifacts

Ioan,

Anghel,

Anastasescu

et al. 2023

Coatings

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Cultural heritage metallic artifacts are often subjected to environmental factors that promote degradation through corrosion processes. Anticorrosion protection is needed both for the long-term preservation of outdoor monuments and the short-term conservation of archaeological artifacts. In this work, functional nanocoatings based on ZnO nanoparticles (NPs) in a silica matrix are prepared as a replacement for a commercial Incralac lacquer. Facile sol–gel synthesis is employed for obtaining silica filmogenic materials, using tetraethoxysilane (TEOS) and 3-glycidyloxypropyl trimethoxysilane (GPTMS). Silica-based nanocomposite coatings, with and without ZnO NPs and benzotriazole (BTA) as anticorrosion agents, applied on copper coupons by brushing are characterized by using VIS and FTIR spectroscopy, SEM and AFM and compared to Incralac lacquer as reference materials. The optical and morphological properties of the proposed silica coatings are similar to the Incralac specimens. The protective effect against corrosion is investigated on the copper coupons as model metallic objects subjected to a corrosion test by using potentiodynamic polarization in a 3.5% NaCl solution at ambient temperature. The influence of the presence of BTA and ZnO NPs in both silica and Incralac coatings is studied, and the variations in the anticorrosive, morphological and optical properties with the concentration of ZnO NPs are evidenced. The presence of moderate concentrations of ZnO in both nanomaterials leads to changes in the color parameters slightly above the limit accepted in the field of cultural heritage (ΔE* 5.09 and 6.13), while a high ZnO concentration of 3% leads to higher values (ΔE* > 10). Regarding the anticorrosive effect, the silica-based coatings with ZnO and BTA present similar efficiencies to that of the Incralac reference material (corrosion rates in the range of 0.044–0.067 mm/year for silica coatings compared to 0.055 mm/year for Incralac).

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Simple incorporation and calcination of Zn-Al LDH during PEO processing in near-neutral pH solutions

Mojsilović,

Serdechnova,

Blawert

et al. 2024

Applied Surface Science

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Utilization of ZnO-based materials as anticorrosive agents: a review

Cited by 6 publications

References 81 publications

Insights into the Electronic, Optical, and Anti-Corrosion Properties of Two-Dimensional ZnO: First-Principles Study

Insights into the Electronic, Optical, and Anti-Corrosion Properties of Two-Dimensional ZnO: First-Principles Study

Hybrid Materials Based on ZnO Nanoparticles and Organo-Modified Silica Coatings as Eco-Friendly Anticorrosive Protection for Metallic Historic Artifacts

Simple incorporation and calcination of Zn-Al LDH during PEO processing in near-neutral pH solutions

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