Superhydrophobic graphene-based materials with self-cleaning and anticorrosion performance: An appraisal of neoteric advancement and future perspectives

Jishnu, AP; Jayan, Jitha S.; Saritha, Appukuttan; Sethulekshmi, A.S.; Venu, Gopika

doi:10.1016/j.colsurfa.2020.125395

Cited by 36 publications

(4 citation statements)

References 127 publications

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“…However, it is reported elsewhere that agglomeration and overlapping of above 1% graphene nanoplatelet can occur in the geopolymer system (Ranjbar et al, 2015). This is because the surface of graphene is hydrophobic which indicates that graphene has the potential to agglomerate in aqueous solutions and geopolymer composites (Jishnu et al, 2020). This indifference in result may be because Zhang uses a readily graphene dispersant liquid while Ranjbar personally sonicate graphene in water for 5 min (Zhang and Lu, 20188;Ranjbar et al, 2015).…”

Section: Compression Analysis On the Graphene Reinforced Geopolymer Nanocompositesmentioning

confidence: 99%

Mechanical Strength of Graphene Reinforced Geopolymer Nanocomposites: A Review

Tay

Mazlan

2021

Front. Mater.

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The emergence of high-strength graphene marks a new milestone in the material science field. With only a small percentage inclusion into the matrix system, this organic nanoparticle could tremendously improve the strength in vast arrays of composites. At the same time, there is a growing interest in using the low-cost, lightweight, and high early strength geopolymer as the new binder for concrete. Compared to the traditional Ordinary Portland Cement (OPC), geopolymer emits 80% less CO2 during its production while exerting similar strength. Thus, the geopolymer has the potential to commercialize as new and green concrete. Geopolymer is a mixture of aluminosilicate powders and alkaline solutions. When incorporated with nano-sized graphene, the material forms a composite known as Graphene Reinforced Geopolymer Nanocomposite (GRGN). The addition of graphene enhances the strength of geopolymer, which can further improve its competitiveness. However, this depends on several factors, including the types of graphene, the surface modification of graphene, and the concentration of alkaline solutions. Generally, the presence of graphene alters the porous structure of geopolymer into a substantially filled porous structure, thus increasing compressive strength and flexural strength. On the other hand, Graphene Oxide (GO) undergoes a chemical reduction in the alkaline solution, producing epoxy functional groups. The chemical treatment results in two conditions which are weak interaction between graphene and geopolymer matrix, and better graphene dispersibility in geopolymer matrix. This review also highlights the analytical modelling aspect of GRGN. The dissolution of Si(OH)4 and Al(OH)4- from the aluminosilicate source was consistent with experimental work and analytical modeling, while the dissolution of Si–OH on the surface-modified graphene indicated otherwise. Therefore, this paper will provide an insightful review of the GRGN mechanical properties.

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Section: Compression Analysis On the Graphene Reinforced Geopolymer Nanocompositesmentioning

confidence: 99%

Mechanical Strength of Graphene Reinforced Geopolymer Nanocomposites: A Review

Tay

Mazlan

2021

Front. Mater.

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“…The wettability of graphene has attracted great attention due to its emerging applications in various fields, such as water desalination, − water purification, , self-cleaning, energy storage, anticorrosion, and anti-icing . However, there has been a long debate on the intrinsic wettability of graphene (hydrophobic or hydrophilic) in the past decades and an accurate understanding remains elusive, , because the experimental measurements of the water contact angles (WCAs) for graphene are spread in a wide range of 10–180°. − The reasons are mainly attributed to the surface contamination , and the effect of the underneath supporting substrate. ,, In recent experiments, much effort has been put to eliminate the effect of surface contamination and supporting substrate by measuring the WCA of free-standing graphene layers with high quality in a controlled environment. − These measurements show that the clean free-standing graphene exhibits a hydrophilic nature, with the WCA in the range of 30–85°. − …”

Section: Introductionmentioning

confidence: 99%

“…The wettability of graphene has attracted great attention due to its emerging applications in various fields, such as water desalination, 1−5 water purification, 6,7 self-cleaning, 8 energy storage, 9 anticorrosion, 8 and anti-icing. 10 However, there has been a long debate on the intrinsic wettability of graphene (hydrophobic or hydrophilic) in the past decades and an accurate understanding remains elusive, 11,12 because the experimental measurements of the water contact angles (WCAs) for graphene are spread in a wide range of 10− 180°.…”

Section: Introductionmentioning

confidence: 99%

Registry-Dependent Potential for Interfaces of Water with Graphene

et al. 2023

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An anisotropic interlayer potential that can accurately describe the van der Waals interaction of the water− graphene interface is presented. The force field is benchmarked against the many-body dispersion-corrected density functional theory. The parametrization of the interlayer potential demonstrates a satisfactory agreement with the reference data set of binding energy curves and sliding potential energy surfaces for various configurations of a water molecule deposited on monolayer graphene, indicating that the developed force field significantly enhances the accuracy in the empirical description of water− graphene interfacial interactions. The water contact angles of monolayer and multilayer graphene extracted from molecular dynamics simulations based on this force field are close to the experimental measurements and predict the hydrophilic nature of graphene. The theoretical approach proposed in this work can be easily adapted to heterointerfaces formed with water and other two-dimensional materials, providing a reliable and versatile platform for studying the wetting properties of these materials.

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“…The rise in the solid-liquid interface might increase surface roughness and hydrophobicity by trapping air in the surface grooves to produce superhydrophobic surfaces [18][19][20]. The resulting nanocomposite structures may have improved interfacial bonding due to economic, extra-high surface-area, and matrix-nanofiller interfacial bonding [21]. By evenly dispersing the nanofillers throughout the coating resin, it is possible to successfully build a superhydrophobic structure with outstanding substrate-coating adhesive forces.…”

Section: Introductionmentioning

confidence: 99%

Advanced bioinspired superhydrophobic marine antifouling coatings

S. Selim,

I. Hamouda,

A. Fatthallah

et al. 2023

Superhydrophobic Coating - Recent Advances in Theory and Applications

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Following the tributyl-tin antifouling coatings’ prohibition in 2003, global interest was directed toward non-toxic coatings as an eco-friendly alternative. Natural surfaces with superhydrophobicity exhibited exciting antifouling mechanisms. Efficient and eco-friendly antifouling coatings have been developed using bioinspired polymeric nanostructured composites. These superhydrophobic surfaces have rough topologies and low surface-free energies. Various organic/inorganic polymeric nanocomposites were developed for increasing fouling prevention by physical microfouling repulsion and chemical surface inertness. The biofouling costs and the difficulties of artificial antifouling coatings were also discussed in this chapter. It will introduce a cutting-edge research platform for next-generation antifouling surfaces for maritime navigation. This chapter aims to explain the evolution of superhydrophobic antifouling surfaces inspired by biological systems.

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Superhydrophobic graphene-based materials with self-cleaning and anticorrosion performance: An appraisal of neoteric advancement and future perspectives

Abstract: Graphical abstract

Cited by 36 publications

References 127 publications

Mechanical Strength of Graphene Reinforced Geopolymer Nanocomposites: A Review

Mechanical Strength of Graphene Reinforced Geopolymer Nanocomposites: A Review

Registry-Dependent Potential for Interfaces of Water with Graphene

Advanced bioinspired superhydrophobic marine antifouling coatings

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