Articles with "silica aerogels" as a keyword



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Digital Light Processing 3D‐Printed Silica Aerogel and as a Versatile Host Framework for High‐Performance Functional Nanocomposites

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Published in 2022 at "Advanced Science"

DOI: 10.1002/advs.202204906

Abstract: Vat‐photopolymerization‐based 3D printing enables on‐demand construction of customized objects with scalable production capacity and high precision. Herein, the sol‐gel process for aerogels with digital light processing 3D printing to produce advanced functional materials possessing hierarchical… read more here.

Keywords: light processing; silica aerogels; printed silica; high performance ... See more keywords
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Multiscale structural characterization of methyltriethoxysilane-based silica aerogels

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Published in 2017 at "Journal of Materials Science"

DOI: 10.1007/s10853-017-1597-1

Abstract: A series of methyltriethoxysilane-based silica aerogel monoliths were prepared by ambient pressure drying with various volume ratios of water to ethanol (R). The pore volumes and average pore sizes of silica aerogels were obtained by… read more here.

Keywords: methyltriethoxysilane based; silica; based silica; silica aerogels ... See more keywords
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Synthesis of highly flexible silica aerogels by photoacids generation

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Published in 2017 at "Journal of Porous Materials"

DOI: 10.1007/s10934-017-0513-z

Abstract: Highly flexible silica aerogels were fabricated by using 2-(3-(triethoxysilyl)propylcarbamoyloxy) ethyl acrylate (TESEA), methyltriethoxysilane (MTES), and polydimethylsiloxane (PDMS) as co-precursors through photopolymerization and sol–gel process, then followed by ambient pressure drying. Attributing to photolysis of the… read more here.

Keywords: aerogels photoacids; silica; highly flexible; flexible silica ... See more keywords
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Towards improved adsorption of phenolic compounds by surface chemistry tailoring of silica aerogels

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Published in 2017 at "Journal of Sol-Gel Science and Technology"

DOI: 10.1007/s10971-017-4373-4

Abstract: The high toxicity/volatility and low biodegradation of phenolic compounds are serious concerns in terms of environmental and health impact—their recommended max. value for drinking water is 0.005 mg/L. They are usually removed from effluents by adsorption,… read more here.

Keywords: adsorption; cyclodextrin; chemistry; surface chemistry ... See more keywords
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The effect of process variables on the properties of nanoporous silica aerogels: an approach to prepare silica aerogels from biosilica

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Published in 2017 at "Journal of Sol-Gel Science and Technology"

DOI: 10.1007/s10971-017-4469-x

Abstract: Silica aerogel, a nanoporous material, was produced by using rice husk ash via sol–gel method. The aim of the study is to examine effects of the acid type (acetic, hydrochloric, nitric, oxalic and sulfuric acid),… read more here.

Keywords: surface area; silica; silica aerogel; specific surface ... See more keywords
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Preparation of tetraethoxysilane-based silica aerogels with polyimide cross-linking from 3, 3′, 4, 4′-biphenyltetracarboxylic dianhydride and 4, 4′-oxydianiline

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Published in 2018 at "Journal of Sol-Gel Science and Technology"

DOI: 10.1007/s10971-017-4566-x

Abstract: AbstractPolyimide cross-linked silica aerogels with different weight percentages of polyimide were prepared through sol–gel technology and supercritical CO2 fluid drying technology. Tetraethoxysilane (TEOS) was used as a silica source precursor, 3-aminopropyltriethoxysilane (APTES) end-capped polyimide was… read more here.

Keywords: polyimide cross; cross; biphenyltetracarboxylic dianhydride; based silica ... See more keywords
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Elastic superhydrophobic and water glass-based silica aerogels and applications

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Published in 2018 at "Journal of Sol-Gel Science and Technology"

DOI: 10.1007/s10971-018-4825-5

Abstract: AbstractSilica aerogels with high elasticity and superhydrophobicity have several scientific and technological applications such as in multidisciplinary subjects dealing with liquid/solid interfacial energies, long-range attractive interactions, frictionless flow of liquids through nano and microchannels, pipes,… read more here.

Keywords: elastic superhydrophobic; water; water glass; silica aerogels ... See more keywords
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Effects of various methylchlorosilanes on physicochemical properties of ambient pressure dried silica aerogels

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Published in 2019 at "Journal of Nanoparticle Research"

DOI: 10.1007/s11051-019-4685-0

Abstract: Methylchlorosilanes (MSCs) of the type (CH3)nSiCl4−n (n = 1, 2, 3) are usually used for surface modification of silica aerogels (SAs), in which the quantity of Si–Cl and Si–CH3 groups deeply affects the properties of… read more here.

Keywords: effects various; methylchlorosilanes physicochemical; three sas; ch3 groups ... See more keywords
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Structural, out-gassing and nanomechanical properties of super-hydrophobic transparent silica aerogels developed by ambient pressure drying for space application

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Published in 2020 at "Bulletin of Materials Science"

DOI: 10.1007/s12034-020-02264-7

Abstract: Transparent super-hydrophobic monolithic silica aerogels are prepared by the cost-effective ambient pressure drying. The drying of aerogel is performed at various temperatures ranging from 25 to 200°C. Oxidation states of different silica aerogels are investigated… read more here.

Keywords: ambient pressure; silica; pressure drying; space application ... See more keywords
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The relationship between the silica wet-gels relative optical transmittance at 500 nm and structural features of silica aerogels

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Published in 2017 at "Ceramics International"

DOI: 10.1016/j.ceramint.2017.04.112

Abstract: Abstract Aerogels are usually synthesized from supercritical drying of wet-gels. High quality aerogels are usually characterized with high specific surface area (measured by BET method here) and high degree of polymerization of silicate (characterized by… read more here.

Keywords: wet gels; quality; supercritical drying; relative optical ... See more keywords
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Facile synthesis of hydrophobic, thermally stable, and insulative organically modified silica aerogels using co-precursor method

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Published in 2018 at "Ceramics International"

DOI: 10.1016/j.ceramint.2017.11.189

Abstract: Abstract Silica aerogels have low density and high specific surface area, but there are restrictions regarding their durability and commercialization owing to their fragile nature and the strong moisture absorbing behavior of the siloxane network.… read more here.

Keywords: organically modified; precursor; precursor method; silica aerogels ... See more keywords