silica xerogel
Guar gum-grafted poly(acrylonitrile)-templated silica xerogel: nanoengineered material for lead ion removal
... templated silica xerogel (H900) as adsorbent on a temperature controlled incubator shaker set at 120 rpm (revolutions per minute) kept up at 30 °C for 2 ...
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Detection of Random Laser Action from Silica Xerogel Matrices Containing Rhodamine 610 Dye and Titanium Dioxide Nanoparticles
... pumping energies (1 - 25 mJ). Thus, the threshold energy and the pumping energy that gives a minimum band width were determined. Figure 6 shows the emission spectra, obtained from the experimental setup, of silica ...
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Preparation and Study of Molecular Structure of Copper Ions Doped in a Silica Xerogel Matrix
... a Silica xerogel formation, relations between the acidity of solution and the hydrolysis time of the reactions has been presented at pH=7, which hydrolysis constant reach to lowest ...
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Structural Comportment of Extract of Bougainvillea xbuttiana Flower Incorporated in Silica Xerogel Matrix
... in silica xerogel matrix, as well as the interaction between the pigments embedded, with the inorganic matrix under heat treatment in which the matrix goes from gel to glass transition, and then correlate ...
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Preparation and characterization of sol-gel processed spray dried silica xerogel microparticles as carriers of heparin sodium
... the silica microparticles are proba- bly due to the incorporation of different precursors in the silica ...based silica xerogel, the pore volume and the specific area of pores in silica ...
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<p>Spray-Dried Silica Xerogel Nanoparticles as a Promising Gastroretentive Carrier System for the Management of Chemotherapy-Induced Nausea and Vomiting</p>
... like silica nanoparticles, can be used for metronomic chemotherapy and targeting drug(s) to speci fi c tumors in the body, thus resulting in a higher ef fi cacy and reduced adverse ...processed silica ...
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Loading capacity and release property of piperine loaded silica aerogel and silica xerogel
... 24]. Silica aerogel and silica xerogel, silica matrices made by the sol gel process have emerged as ideal carrier materials for drug delivery ...of silica in delivery system can provide ...
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Thermo Stability of Natural Products Based on Chlorophyll Species Embedded in Silica Xerogel
... In general, the biostability is presented in organic compounds incorporated into silica xerogel matrix. In Fig- ure 5 is shown infrared absorption spectrum in the range from 1000 to 1400 cm −1 , where the ...
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Preparation and study properties of xerogel silica using sol-gel method
... 3-Xerogel silica are well known for its high transparency in visible region ,and the transparency was enhanced by increase of water ...the silica xerogel were calculated from the T and R ...
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Effect of Aging in the Structure of Silica Xerogels with Incorporation of Extract’s Leaves
... in silica xerogel matrix promoted by aged time was ...in xerogel matrix, with concentration of 8 g / 20 ml and water to TEOS molar ratio of 11, which remain bioactive over a very long period of time, ...
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Coercivity Values Enhancement by Incorporation of Magnetic Powders in Inorganic Matrix Hosts
... In order to focus on the interaction process between the compound embedded ant the particular matrix, we deal in this paper with the magnetically study of precur- sor powders of Co-ferrite embedded in silica ...
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Silica-titania xerogel doped with Mo,P-heteropoly compounds for solid phase spectrophotometric determination of ascorbic acid in fruit juices, pharmaceuticals, and synthetic urine
... reagents. Silica xerogels doped with various HPC have been synthesized earlier and applied as sensor [17] or catalytic materials [19, ...the silica xerogel have retained their redox properties and ...
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Key words
... injected silica particles were cleared from systemic blood circulation and partially excreted through the renal excretion route; significant distribution of the particles was observed in the liver, urinary blad- ...
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Surface Photografting of Novel Sulfobetaine Copolymers on Silica
... on silica surface. Amine groups introduced on the silica surface (Schemes 3 and 4) were made to react with maleimide under UV irradiation using AIBN as ...grafted silica particles could not be re- ...
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Applications of mesoporous silica materials in food – a review
... mesoporous silica materials was reported by Bernardos et ...Mesoporous silica- based materials contain pH- and anion-controlled nano-supramolecular gate-like ensembles built up by anchoring suitable ...
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Preparation and Characterization of Silica Enoxil Nanobiocomposites
... pristine silica and pure ...the silica and silica-Enoxil composites became satu- rated after 30 ...the silica surface allows higher access of O–H groups in its biomolecules for interaction ...
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Immobilization of Polymeric Luminophor on Nanoparticles Surface
... unlike silica-based composite, destruction of samples 6 and 7 (Table 1) in the range 250–410 °C occurs in one step with a maximum weight loss at 340 ...on silica, not only the inter- action with grafted ...
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Vanadium pentoxide and tungsten oxide as substrates for enzyme immobilization in an EGFET-biosensor
... Thus, the addition of glucose limited the electrocatalytic reaction and led to a decrease in reduction current. Upon addition of glucose, the electrocatalytic reaction is limited to the enzyme- catalyzed reaction between ...
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Oxygen Isotope Study of Silica Sinter from the Osorezan Geothermal Field, Northeast Japan
... of silica minerals with variable crystallinity. Silica sinter is typically composed of a silica mineral such as opal-A, opal-CT, opal-C, and quartz, or a mixture of them ...the silica ...
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Investigating the Heavy Metal Adsorption of Mesoporous Silica Materials Prepared by Microwave Synthesis
... In this study, an ordered mesoporous silica material MCM-41 has been conveniently synthesized using silica fume as the silica source under microwave heating. Microwave heating synthesis method ...
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