Self-organization of silicates on different length scales exemplified by amorphous mesoporous silica and mesoporous zeolite beta using multiammonium surfactants

Castro, María; Losch, Pit; Farès, Christophe; Haouas, Mohamed; Taulèlle, Francis; Breynaert, Eric; Kirschhock, Christine; Park, Woojin; Ryoo, Ryong; Schmidt, Wolfgang

doi:10.1039/d0ra03828h

Cited by 5 publications

(1 citation statement)

References 33 publications

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“…The stacked organization of the alkyl chains may have occurred to maximize the van der Waals interactions of the chains [32]. Moreover, it was shown that the morphology of the silica material could be modified as function of the hydrophobization of silica surface with silane precursors.…”

Section: Tem Analysismentioning

confidence: 99%

Effect of Modified Silica Materials on Polyvinyl Chloride (PVC) Substrates to Obtain Transparent and Hydrophobic Hybrid Coatings

Purcar

Rădiţoiu

et al. 2021

Applied Sciences

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In this research, we report a simple and inexpensive way to prepare transparent and hydrophobic hybrid coatings through deposition of different silica materials on polyvinyl chloride (PVC) substrates. The silica materials were prepared using an acid-catalyzed sol–gel method at room temperature (25 ± 2 °C), using alkoxysilanes: tetraethoxysilane (TEOS), as the silica source, and ethoxydimethylvinylsilane (DMVES), triethoxyoctylsilane (OTES), and trimethoxyhexadecylsilane (HDTMES), as modifier agents. The obtained materials were characterized (either as powders or as thin films) by Fourier-transform infrared spectroscopy (FTIR), UV/Vis spectroscopy, transmission electron microscopy (TEM), thermogravimetric analysis (TGA), atomic force microscopy (AFM), spectroscopic ellipsometry (SE), and water contact-angle measurements. UV/Vis spectra showed that the PVC substrate coated with the silica material containing TEOS/DMVES/OTES had a transmittance of about 90% in the wavelength range of 650–780 nm. The water contact angles increased from 83° for uncoated PVC substrate to ~94° for PVC substrates coated with the sol–gel silica materials. These PVC films with hybrid silica coatings can be used as the materials for outdoor applications, such as energy-generating solar panel window blinds or PVC clear Windmaster outdoor blinds.

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Section: Tem Analysismentioning

confidence: 99%

Effect of Modified Silica Materials on Polyvinyl Chloride (PVC) Substrates to Obtain Transparent and Hydrophobic Hybrid Coatings

Purcar

Rădiţoiu

et al. 2021

Applied Sciences

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Green iron oxides/amino-functionalized MCM-41 composites as adsorbent for anionic azo dye: Kinetic and isotherm studies

Souza

Licea

Colaço

et al. 2021

Journal of Environmental Chemical Engineering

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Supercapacitive performance of cobalt-loaded amorphous zeolite for energy storage applications

Ngouana Moafor,

Macheli,

Kabongo

et al. 2024

Microporous and Mesoporous Materials

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Self-organization of silicates on different length scales exemplified by amorphous mesoporous silica and mesoporous zeolite beta using multiammonium surfactants

Abstract: Reaction gels containing piperidine-based multi-ammonium OSDA yield hierarchical nano-beta zeolite in the presence of aluminum and amorphous mesoporous silica without aluminum, illustrating the highly complex thermodynamic course of zeolite formation.

Cited by 5 publications

References 33 publications

Effect of Modified Silica Materials on Polyvinyl Chloride (PVC) Substrates to Obtain Transparent and Hydrophobic Hybrid Coatings

Effect of Modified Silica Materials on Polyvinyl Chloride (PVC) Substrates to Obtain Transparent and Hydrophobic Hybrid Coatings

Green iron oxides/amino-functionalized MCM-41 composites as adsorbent for anionic azo dye: Kinetic and isotherm studies

Supercapacitive performance of cobalt-loaded amorphous zeolite for energy storage applications

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