Ambient pressure dried silica aerogel – Melamine foam composite with superhydrophobic, self-cleaning and water remediation properties

Fashandi, Maryam; Rejeb, Zeineb Ben; Naguib, Hani E.; Park, Chul

doi:10.1016/j.seppur.2023.124201

Cited by 9 publications

(2 citation statements)

References 71 publications

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“…Interesting emerging silica aerogel-based composites have also been designed in combination with diverse other materials, including but not limited to glass fibers [ 97 , 98 ], silica nanowires [ 99 ], titanium dioxide [ 100 , 101 , 102 ], ferric oxide [ 103 ], diatomite [ 104 ], reduced graphene oxide [ 105 ], sintered fly ash [ 106 , 107 , 108 ], biochar [ 109 ], melamine foam [ 110 ], paraffin [ 111 , 112 , 113 ], cellulose [ 105 ], polystyrene [ 114 ], polyurethane [ 115 ], polyimide [ 116 , 117 ], phenyl [ 118 ], C8/threonine [ 119 ], piperazine [ 120 ], amidoxime [ 121 ], and cinnamaldehyde [ 109 ].…”

Section: Composite Materials Containing Silica Aerogelmentioning

confidence: 99%

An Updated Overview of Silica Aerogel-Based Nanomaterials

Niculescu,

Tudorache,

Bocioagă

et al. 2024

Nanomaterials

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Silica aerogels have gained much interest due to their unique properties, such as being the lightest solid material, having small pore sizes, high porosity, and ultralow thermal conductivity. Also, the advancements in synthesis methods have enabled the creation of silica aerogel-based composites in combination with different materials, for example, polymers, metals, and carbon-based structures. These new silica-based materials combine the properties of silica with the other materials to create a new and reinforced architecture with significantly valuable uses in different fields. Therefore, the importance of silica aerogels has been emphasized by presenting their properties, synthesis process, composites, and numerous applications, offering an updated background for further research in this interdisciplinary domain.

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Section: Composite Materials Containing Silica Aerogelmentioning

confidence: 99%

An Updated Overview of Silica Aerogel-Based Nanomaterials

Niculescu,

Tudorache,

Bocioagă

et al. 2024

Nanomaterials

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“…As an example, our recently published paper demonstrates that the inclusion of silica aerogels into flexible open-cell melamine foams (MFs) can significantly boost their mechanical properties, durability, and structural strength. This improvement in the elasticity is due to strong chemical interactions between aerogel and MF framework and the stability of the silica aerogel network inside the MF pores …”

Section: Introductionmentioning

confidence: 99%

Melamine Network as a Solution for Significant Enhancement of the Mechanical, Adsorptive, and Surface Properties in a Novel Carbon Nanomaterial–Silica Aerogel Composite

Fashandi,

Rejeb,

Naguib

et al. 2024

ACS Appl. Mater. Interfaces

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Silica aerogels exhibit exceptional characteristics such as mesoporosity, light weight, high surface area, and pore volume. Nevertheless, their utilization in industrial settings remains constrained due to their brittleness, moisture sensitivity, and costly synthesis procedure. Several studies have proved that adding nanofillers, such as carbon nanotubes (CNT) or graphene nanoplatelets (GNP), can improve the mechanical strength of the aerogels. The incorporation of nanofillers is often accompanied by agglomeration and pore blockage, which, in turn, deteriorates the surface area, pore volume, and low density. Including flexible melamine foam (MF) as a scaffold for the silica aerogel and nanofiller composite can prevent the restacking of the nanofillers through π−π interaction, hence maintaining the incredible properties of aerogels and improving their mechanical properties. CNT, GNP, and the polymeric silica precursor, polyvinyltrimethoxysilane (PVTMS), were added to a MF, at varying concentrations, to fabricate the MF-aerogel nanocomposites. Surfactant and sonication were utilized to ensure a homogeneous dispersion of the nanofillers in the system. The presence of MF prevented the agglomeration of nanofillers, resulting in lower density and relatively higher surface properties (S BET up to 929 m 2 •g −1 and pore volume up to 4.34 cc•g −1 ). Moreover, the MF-supported samples could endure 80% strain without breakage and showed an outstanding compressive strength of up to ∼20 MPa. These aerogel nanocomposites also demonstrated an excellent volatile organic compound (∼2680 mg•g −1 ) and cationic dye adsorption (∼10 mg•g −1 ).

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