DiseasesChemicals and DrugsPhenomena and Processes
Silicon DioxidePorosityAdsorptionSilica GelSilicosisSilanes
NanoparticlesAmorphousColloidalSphericalMesoporousGlassesProduction of porousSilicon dioxideSynthesisChemically bondedMonolithic silicaCrystalline silicaAluminaPorositySiO2AerogelsHydrophilicCarbonAdsorptionReactionMaterialsMembranesBeadsCovalentMaterialCorrosionProcessesAminoImmobilizationExposureBulk densityTemperatureSurface areaHPLCPowderPhaseHighDispersionComponentsCommonlyStabilityWaterEffectProductsGlassPerformance
Nanoparticles7
  • Taking inspiration from the structure of diatom algae frustules and motivated by the need for new detecting strategies for emerging nanopollutants in water, we analyze the potential of nanoporous silica tablets as metering devices for the concentration of biomolecules or nanoparticles in water. (springer.com)
  • Using molecular dynamics and previous results from the literature, we demonstrate the correlation between the self-diffusion coefficient of water in silica nanopores and the concentration of proteins or nanoparticles contained therein. (springer.com)
  • Adsorption and Catalytic Activity of Gold Nanoparticles in Mesoporous Silica: Effect of Pore Size and Dispersion Salinity. (ornl.gov)
  • The assembled state of nanoparticles (NPs) within porous matrices plays a governing role in directing their biological, electronic, and catalytic properties. (ornl.gov)
  • Silicon Dioxide nanoparticles , also known as silica nanoparticles or nano-silica , appear in the form of white powder. (cookingmamacookoff.com)
  • In our group, various nanomaterils have been used as carrier to load enzymes and antibodies including graphene, carbon nanotubes (CNTs), carbon nanospheres, gold nanoparticles, silica nanoparticles and carboxylated magnetic beads. (cdc.gov)
  • In our group, a novel electrochemical immunosensor for the detection of tumor necrosis factor-alpha (TNF-alpha) based on poly-(guanine)-functionalized silica nanoparticles (NPs) label has been presented. (cdc.gov)
Amorphous7
  • Skeleton of porous glasses consists of amorphous silica that is an additional advantage of this material. (hindawi.com)
  • Biogenic amorphous silica (bASi) pools in soils are in the range of 0-6% and are suggested to help plants to resist drought. (nature.com)
  • The phytogenic ASi pool consists of pure phytoliths and other amorphous forms of silica like the Si double layer, as a result of silicic acid uptake and sequestration in the plant biomass. (nature.com)
  • Silica comes in two basic forms: crystalline and amorphous. (cookingmamacookoff.com)
  • Crystalline silica has a regular lattice arrangement, while amorphous silica has an irregular lattice arrangement. (cookingmamacookoff.com)
  • Amorphous silica can be divided into three categories: natural forms, byproducts of power stations and metallurgical processes, and synthetic forms. (cookingmamacookoff.com)
  • Amorphous silica is considered to be a very promising gene carrier and molecular imaging candidate, mainly because of its highly tunable biocompatibility and stability. (cookingmamacookoff.com)
Colloidal2
  • Hierarchically porous silica composites via a colloidal reaction sequence. (mpg.de)
  • Multilayered titania, silica, and Laponite nanoparticle coatings on polystyrene colloidal templates and resulting inorganic hollow spheres. (mpg.de)
Spherical1
  • Shim-pack GIST series columns are packed with newly developed high-purity porous spherical silica. (shimadzu.com)
Mesoporous3
  • Mesoporous silica materials, especially alkali borosilicate glasses with magnetic properties, attract undiminishing interest because of the magnificent physicochemical properties such as a low thermal expansion coefficient, high chemical and mechanical resistance, a large and controllable porosity, a high surface area, tunable pore sizes and volumes, and optical and magnetodielectric characteristics [ 1 - 12 ]. (hindawi.com)
  • In this study, we use adsorption isotherms, spectrophotometry, and small-angle neutron scattering to develop a better understanding of the effect of spatial confinement on the assembled state and catalytic performance of gold (Au) NPs in propylamine-functionalized SBA-15 and MCM-41 mesoporous silica materials (mSiO2). (ornl.gov)
  • Mesoporous silicon and silica particles are ideal candidates for controlled drug release because of their rare properties, such as high surface area, large pore volume, adjustable pore size, and good chemical and thermal stability. (cookingmamacookoff.com)
Glasses10
  • Through the addition of inorganic salts as porogens during an alcohol-based sol-gel process high surface area silica glasses and aerogels with varying pore sizes are synthesized. (unimib.it)
  • This is where porous glasses serve an important purpose: with substantial surface area and the appropriate surface chemistry, porous glasses can act as a high-performance desiccant to protect moisture-sensitive electronics in applications that include medical devices, precision optics, and CO 2 lasers, among others. (schott.com)
  • SCHOTT porous glasses perform an essentially identical function as silica packets. (schott.com)
  • While silica packets keep a general environment of low moisture, SCHOTT porous glasses - with their rigidity and fully customizable shaping options - enable the desiccant to be tailored to the space and affixed securely. (schott.com)
  • The formation of dendrite-like structure is a necessary condition for production of porous magnetic glasses. (hindawi.com)
  • The obtained results allow us to optimize the melting and heat treatment processes leading to production of porous alkali borosilicate glasses with magnetic properties. (hindawi.com)
  • One of the first attempts to create porous alkali borosilicate glasses with magnetic properties has been undertaken in the papers [ 4 , 5 ]. (hindawi.com)
  • It should be noted that modern methods of etching of chemically unstable phase permit producing the porous glasses with developed interconnected dendrite pore net and controllable average pore diameters. (hindawi.com)
  • Unfortunately, the conventional methods of magnetic porous glass production are sufficiently expensive and do not permit obtaining a large amount of these glasses per one melting circle. (hindawi.com)
  • Chemistry major B.G. Loper (E&H '18) is studying the effects of atmospheric carbon dioxide on the corrosion behavior of porous silica glasses in unbuffered solutions. (ehc.edu)
Production of porous1
  • In the production of porous calcium silicates, quicklime and micro silica have been utilized as key raw materials. (aau.dk)
Silicon dioxide1
Synthesis2
  • Therefore, screening of different chemical surfaces on porous silica used as supports for lipase immobilization allowed obtaining active and stable biocatalyst to be employed in the novel synthesis of lactulose palmitate. (pucv.cl)
  • In this work, we investigate the influence of micro silica surface hydroxyl groups in the synthesis of calcium silicate. (aau.dk)
Chemically bonded2
  • USP L20 Dihydroxypropane groups chemically bonded to porous silica or hybrid particles, 1.5 to 10 µm in diameter, or a monolithic silica rod. (crosspart.com)
  • Shim-pack WAX/WCX series columns are chemically-bonded hydrophilic silica gel based ion exchange columns. (shimadzu.com)
Monolithic silica1
  • In the presence of ZnCl2 and CaCl2 respectively, tetraethyl orthosilicate (TEOS) dissolved in ethanol hydrolyzes also in the absence of any acid or base catalysts, eventually forming high surface area monolithic silica networks. (unimib.it)
Crystalline silica4
  • Crystalline silica comes in many forms. (cookingmamacookoff.com)
  • There is also porous crystalline silica called a porosil. (cookingmamacookoff.com)
  • The health effects associated with silica exposure, particularly crystalline silica, have been extensively studied. (cookingmamacookoff.com)
  • Studies have shown that occupational exposure to crystalline silica induces silicosis, a fibrotic lung disease, in workers, and that exposure is associated with other lung diseases, such as lung cancer, emphysema, and tuberculosis. (cookingmamacookoff.com)
Alumina3
Porosity2
  • Porosity and chemical surface of silica supports, before and after functionalization and after immobilization, were characterized by gas adsorption and Fourier transform infrared (FTIR) spectroscopy. (pucv.cl)
  • Porous CNS displayed unique advantages owing to the tenability of particle size and shape as well as the resident porosity that promotes diffusion of guest molecules through interconnected micropores. (cdc.gov)
SiO21
  • Silica gel - SiO2 - is a hard, adsorbent, crystalline substance and very porous. (newmars.com)
Aerogels1
Hydrophilic1
  • Because the surface contains an OH- bond, nano silica is a kind of acid oxide, belonging to the silicate acid group, has hydrophilic, and the water absorption rate is more than 5 times its own. (cookingmamacookoff.com)
Carbon5
  • The tartaramide based chiral selector 2 was synthesized, coated onto porous graphitic carbon (PGC), and evaluated as a chiral stationary phase for HPLC. (diva-portal.org)
  • Detailed molecular aspects of carbon dioxide sorption on porous silica with different amounts of tethered and cross-linked n-propylamine groups were investigated. (diva-portal.org)
  • This thesis dealt with two potential adsorbents for post combustion carbon capture, namely, amine modified silica and calcium carbonates. (diva-portal.org)
  • We modified porous silica with large surface area by propyl-amine groups to enhance the carbon dioxide adsorption capacity and selectivity. (diva-portal.org)
  • Bimodal porous carbon-silica (BP-CS) nanocomposites exhibit advantageous properties from a design perspective for low-cost lithium-ion battery anodes. (researcher-app.com)
Adsorption1
  • Adsorption properties and the nature of formed species upon reaction of CO 2 and amine-modified silica were studied by sorption and infrared spectroscopy. (diva-portal.org)
Reaction3
  • Experimental parameters, such as reaction time, temperature, water content, acid and heat treatment of silica substrate were optimized using a fractional factorial design. (diva-portal.org)
  • An etching reaction between molten KOH and silica at high temperature (∼700 °C) introduces micropores and increases the surface area from 446 m 2 /g to 1718 m 2 /g without the loss of the ordered mesostructure. (researcher-app.com)
  • The results show that the hydroxyl groups play an important role in the reaction between micro silica and quicklime. (aau.dk)
Materials2
  • At the best of our knowledge, this is the first time that hybrid porous materials are proposed as a new class of sustainable materials, produced to reduce pollutants in the wastewaters and in the atmosphere. (unibs.it)
  • The immobilization of proteins on the porous silica opens a great potential for applications of these materials in biology as biosensors and for biocatalysis [ 27 - 29 ]. (hindawi.com)
Membranes1
  • Mesostructured silica tubes and rods by templating porous membranes. (mpg.de)
Beads1
Covalent1
  • The poly[G]- and avidinfunctionalized silica NP label was prepared by covalent binding poly[G] and avidin to the silica NP surface using the conventional coupling reagent EDC and NHS. (cdc.gov)
Material1
  • SIGMA's new unique coating technology "NPC (Nano Porous Coating)" incorporates porous silica as the coating material. (vistek.ca)
Corrosion1
  • The porous SiC ceramics were observed to exhibit better corrosion resistance in acid solution. (csircentral.net)
Processes1
  • Such surfacefunctionalized CNS and porous structures are potentially beneficial for labeling and electrochemical processes. (cdc.gov)
Amino4
  • Hypersil GOLD Amino, Cyano, and Silica columns are all shipped in normal phase solvents. (thermofisher.com)
  • Triggered by the acid, the second particle's silica face released an amino acid back to the first, which recognised that compound and released the final product, a dye. (newscientist.com)
  • Briefly, carboxylic acid functionalized silica NPs were prepared from amino-modified silica NPs with glutaric anhydride in DMF and activated with EDC and NHS in an aqueous solution to obtain NHS ester-terminated silica NPs. (cdc.gov)
  • The activated silica NPs were then reacted with avidin and amino-modified poly[G]. The functionalized silica NPs were separated from excess reactants by centrifuge. (cdc.gov)
Immobilization1
  • Therefore, a study was conducted to evaluate the effect of different chemical surfaces of hierarchical meso-macroporous silica in the immobilization of two lipases from Pseudomonas stutzeri (PsL) and Alcaligenes sp. (pucv.cl)
Exposure2
  • Because of the need to provide short-term or real-time estimates of worker respirable dust exposure, porous foam may be a viable classification media for a low flow rate, disposable respirable dust sampler for use in the coal mining industry. (cdc.gov)
  • A recent report evaluating silica exposure levels in the metal/nonmetal mining industry noted that bag packaging and loading are some of the occupations at the greatest risk. (cdc.gov)
Bulk density2
  • The bulk density of silica gel is 480 - 720 kg/m3. (newmars.com)
  • Nano silica has the characteristics of light volume, fluffy, bulk density of less than 0.15-0.2g/cm3, a specific surface area of more than 500 m2/g, and high chemical activity. (cookingmamacookoff.com)
Temperature1
  • Porous calcium silicates are widely used in insulating systems for high temperature applications. (aau.dk)
Surface area2
  • H2O2 increase the micro silica surface area, and the number of hydroxyl groups on the micro silica surface. (aau.dk)
  • By removing hydroxyl groups from the silica surface, we tremendously decrease the surface area and the reactivity of micro silica. (aau.dk)
HPLC1
  • Shim-pack GIS series columns are packed with high purity silica gel and are your ideal generic HPLC columns. (shimadzu.com)
Powder1
  • Cordierite-silica bonded porous SiC ceramics were fabricated by infiltrating a porous powder compact of SiC with cordierite sol followed by sintering at 1300-1400 degrees C in air. (csircentral.net)
Phase1
  • Shim-pack MAqC-ODS I reversed-phase columns are packed with a silica gel containing metal and added octadecylsilyl group. (shimadzu.com)
High1
  • Based on high purity silica bonded with an ion-exchange ligand, Hypersil GOLD SAX LC Columns provide outstanding peak shape and sensitivity. (fishersci.com)
Dispersion1
  • Nano silica is used to modify the dispersion and plasticity of cement concrete, thus giving it impermeability, enhanced impermeability, frost resistance, reducing hydration heat, and prolonging service life. (cookingmamacookoff.com)
Components2
  • When the requirements are particularly stringent for complete moisture prevention and unwavering performance, porous glass can serve as a highly effective desiccant that has the capability to be customized for fitment directly in sensitive areas without major design changes to existing optics / lasers components or systems. (schott.com)
  • Effective weather sealing in combination with rigid custom fitment of porous glass directly around sensitive laser components affords piece of mind for uncompromised performance in all types of conditions. (schott.com)
Commonly1
  • For Gravel, his process involves sourcing silica, a sandstone component commonly used for flooring, "straight from the quarry," then tinting it black, blue and other shades. (azuremagazine.com)
Stability1
  • Excellent stability and performance could be achieved under a wide range of LC conditions with Shim-pack Scepter LC columns, which are the next generation organic silica hybrid based columns. (shimadzu.com)
Water4
  • We increase the hydroxyl groups by dispersing the micro silica in 10wt% H2O2 (CS10%), and we remove the hydroxyl groups by drying the micro silica at 650°C and then disperse it in water (CS650). (aau.dk)
  • A reference sample is also prepared from as-received micro silica dispersed in water (CSref. (aau.dk)
  • We find that the micro silica dispersed in 10% H2O2 decrease in average sizes, while the silica heated to 650°C increase the average sizes, compared to the as-received micro silica dispersed in demineralized water. (aau.dk)
  • The result: tall, minimalist vases (sealed so water won't seep through) and porous outdoor tables (left unsealed so rainfall filters to the ground). (azuremagazine.com)
Effect1
  • Effect of a Swelling Agent on the Performance of Ni/Porous Silica Catalyst for CH 4 -CO 2 Reforming. (bvsalud.org)
Products2
  • The most well-known example of a desiccant comes in the form of a small silica-filled bag that is typically found in consumer products packaging. (schott.com)
  • Dutch designer Tijs Gilde sits in his Eindhoven studio amid samples from his Gravel collection of silica products. (azuremagazine.com)
Glass9
  • Porous glass can act as an effective desiccant to preserve precision and functionality in medical, optics, and CO2 laser applications. (schott.com)
  • SCHOTT porous glass is an exceptional fit in its use as a desiccant for moisture mitigation requirements. (schott.com)
  • The shape adaptability and customization options of porous glass allow for seamless integration without major change to existing systems and component designs - it can be designed to fit existing applications rather than the other way around. (schott.com)
  • SCHOTT porous glass desiccants serve an important purpose in mitigating the potentially damaging effects of moisture presence for medical devices, precision optics, and CO2 lasers. (schott.com)
  • Working with a glass expert with experience in porous glass manufacturing and fitment, especially in the case of laser systems, can help deliver reliability, longevity, and peace of mind thanks to effective moisture prevention in areas where it is a crucial requirement. (schott.com)
  • Porous glass can serve as a highly effective desiccant in medical applications to prevent damaging moisture buildup in sensitive electronics. (schott.com)
  • Porous glass is an ideal choice to serve as an effective desiccant for moisture prevention precision optical devices. (schott.com)
  • Placing porous glass in CO2 lasers to act as a desiccant can address concerns regarding moisture intrusion, which can negatively affect safe functionality. (schott.com)
  • The moisture mitigation delivered by porous glass can help effectively promote the precision, functionality, and lifespan of CO2 laser systems. (schott.com)
Performance1
  • Its performance was compared to the silica based sorbent 1 containing the same chiral moiety. (diva-portal.org)