Room Temperature Viscous Flow of Amorphous Silica Induced by Electron Beam Irradiation
Sign Up to like & getrecommendations! Published in 2023 at "Advanced Science"
DOI: 10.1002/advs.202205237
Abstract: The increasing use of oxide glasses in high‐tech applications illustrates the demand of novel engineering techniques on nano‐ and microscale. Due to the high viscosity of oxide glasses at room temperature, shaping operations are usually… read more here.
Keywords: irradiation; viscous flow; temperature; room temperature ... See more keywords
Free-Standing Molecularly Thin Amorphous Silica Nanosheets.
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DOI: 10.1002/smll.202300022
Abstract: Recent progress in 2D materials has initiated new fields of molecularly thin amorphous materials with mysterious properties and structures. However, designed synthesis of molecularly thin amorphous silica still remains a challenge; whether free-standing molecularly thin… read more here.
Keywords: free standing; thin amorphous; molecularly thin; silica nanosheets ... See more keywords
Characterization of hydroxylated amorphous silica: a numerical approach
Sign Up to like & getrecommendations! Published in 2018 at "Adsorption"
DOI: 10.1007/s10450-018-9936-3
Abstract: Hydroxylated amorphous silica nanoparticles were modeled using a combination of computational techniques at different levels of length scales from Ångström to hundreds of nanometers. Using quantum chemical ab initio methods, force field Monte Carlo methods,… read more here.
Keywords: silica numerical; hydroxylated amorphous; model; characterization hydroxylated ... See more keywords
Effects of amorphous silica nanoparticles and polymer blend compositions on the structural, thermal and dielectric properties of PEO–PMMA blend based polymer nanocomposites
Sign Up to like & getrecommendations! Published in 2018 at "Journal of Polymer Research"
DOI: 10.1007/s10965-018-1510-x
Abstract: The polymer nanocomposite (PNC) films consisted of poly(ethylene oxide) (PEO) and poly(methyl methacrylate) (PMMA) blend matrices dispersed with nanoparticles of amorphous silica (SiO2) have been prepared by solution-cast method followed by melt-press technique. Effects of… read more here.
Keywords: pmma blend; polymer; peo pmma; pnc films ... See more keywords
New Methods of Obtaining Al–Si Alloys Using Amorphous Microsilica
Sign Up to like & getrecommendations! Published in 2019 at "International Journal of Metalcasting"
DOI: 10.1007/s40962-019-00353-w
Abstract: The work presents the calculations of enthalpy of formation as well as Gibbs energy of reduction of silicon dioxide by aluminum. This way, the possibility of producing Al–Si alloys using amorphous silica fume has been… read more here.
Keywords: silica fume; using amorphous; silicon; alloys using ... See more keywords
Amorphous silica fiber matrix biomaterials: An analysis of material synthesis and characterization for tissue engineering
Sign Up to like & getrecommendations! Published in 2022 at "Bioactive Materials"
DOI: 10.1016/j.bioactmat.2022.04.002
Abstract: Silica biomaterials including Bioglass offer great biocompatibility and bioactivity but fail to provide pore and degradation features needed for tissue engineering. Herein we report on the synthesis and characterization of novel amorphous silica fiber matrices… read more here.
Keywords: tissue engineering; silica; silica fiber; amorphous silica ... See more keywords
Acid-based geopolymers using waste fired brick and different metakaolins as raw materials
Sign Up to like & getrecommendations! Published in 2020 at "Applied Clay Science"
DOI: 10.1016/j.clay.2020.105813
Abstract: Abstract Three metakaolins and waste fired brick were used to explore the effects of iron oxide, amorphous silica and quartz in the raw materials on the compressive strength and the microstructural properties of acid-based geopolymers… read more here.
Keywords: acid based; waste fired; raw materials; based geopolymers ... See more keywords
Selective adsorption of cationic/anionic tritoluene dyes on functionalized amorphous silica: A mechanistic correlation between the precursor, modifier and adsorbate
Sign Up to like & getrecommendations! Published in 2021 at "Colloids and Surfaces A: Physicochemical and Engineering Aspects"
DOI: 10.1016/j.colsurfa.2021.126435
Abstract: Abstract Selective adsorption of synthetic and functionalized amorphous silica (silica nanosheets and silica nanoparticles (SiNSs and SiNPs) modified by hexadecyl trimethyl ammonium bromide (HDTAB) and hexadecyl trimethoxysilane (HDTMS)) towards dyes is investigated to obtain a… read more here.
Keywords: selective adsorption; mechanistic correlation; adsorption; amorphous silica ... See more keywords
Synthesis and characterization of amorphous silica-alumina with enhanced acidity and its application in hydro-isomerization/cracking
Sign Up to like & getrecommendations! Published in 2020 at "Fuel"
DOI: 10.1016/j.fuel.2020.118487
Abstract: Abstract Amorphous silica-aluminas with enhanced Bronsted acidity have been successfully synthesized via a novel acetic acid based sol-gel process. The resulting amorphous silica-aluminas possess an irregular spherical morphology, homogeneously element dispersion, and a high external… read more here.
Keywords: bronsted acid; silica alumina; silica aluminas; amorphous silica ... See more keywords
Spatially-variable carbonation reactions in polycrystalline olivine
Sign Up to like & getrecommendations! Published in 2017 at "Geochimica et Cosmochimica Acta"
DOI: 10.1016/j.gca.2017.02.003
Abstract: Abstract Carbon dioxide (CO 2 ) injection into olivine-rich mafic and ultramafic rocks is expected to result in the precipitation of divalent metal carbonate minerals, permanently storing the CO 2 underground. Previous experiments that used… read more here.
Keywords: carbonation; carbonation reactions; spatially variable; variable carbonation ... See more keywords
The role of nanoscale aggregation of ferrihydrite and amorphous silica in the natural attenuation of contaminant metals at mill tailings sites
Sign Up to like & getrecommendations! Published in 2021 at "Geochimica et Cosmochimica Acta"
DOI: 10.1016/j.gca.2021.02.004
Abstract: Abstract Ferrihydrite, a hydrous ferric oxide, is ubiquitous in silica-rich mine drainage sites, although some uncertaity remains concerning its nanoscale texture and colloidal properties such as its association with amorphous silica and reactions with contaminant… read more here.
Keywords: mill tailings; ferrihydrite amorphous; amorphous silica; natural attenuation ... See more keywords