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Showing 1 to 20 of 244 for “"Mesoporous"”.
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Direct liquid crystal templating of mesoporous silica
… is concerned with the development of ordered<br/>mesoporous silicas by direct templating from lyotropic liquid crystal phases of the<br/>surfactants Pluronic PI23, Pluronic F127, CTAB and Brij 78. The factors affecting the<br/>regularity, morphology, pore diameter and wall thickness of the …
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Synthesis and Environmental Applications of Mesoporous Alumina
Mesoporous alumina was synthesized via the self-assembly of poly(ethylene oxide)-poly(butylene oxide)-poly(ethylene oxide) triblock copolymer and aluminum isopropoxide in the presence of nitric acid. This synthesis afforded mesoporous alumina materials with high specific surface area, large pore …
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Mesoporous silica encapsulated metal nanoparticles in catalysis
… and complicates their surface structures. Mesoporous silica shells can be used to encapsulate monometallic and bimetallic nanoparticles with high sinter-resistance for high-temperature treatment, and enables their applications for harsh reaction conditions and fundamental mechanism studies. …
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Engineering mesoporous silicon for cell biology applications
Porous Silicon is a material that is made when an electric potential is applied to silicon using a hydrofluoric acid electrolyte. The structure of porous silicon is of interest for cell biological applications due to the large surface area and optical properties. To render the material …
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Inclusion of Molybdenum into microporous and mesoporous materials
… Y types, large microporous cloverite, and mesoporous MCM-41. The large pore supports were used to produce catalysts that can accommodate catalysis reactions involving large molecules. The objective of this work is to study the preparation and characterisation of the molybdenum supported …
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Novel mesoporous silicates as indoor air pollutant scavengers
A mesoporous silicate has been developed for the removal of volatile organic compounds (VOCs). The indoor air pollutants of interest were formaldehyde, toluene, ethylbenzene, o-xylene, cumene and dichlorobenzene. The indoor air pollutants were actively sampled onto (i) Tenax filled sampling tubes …
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Feedback active coatings based on mesoporous silica containers
Metalle werden oft während ihrer Anwendung korrosiven Bedingungen ausgesetzt, was ihre Alterungsbeständigkeit reduziert. Deswegen werden korrosionsanfällige Metalle, wie Aluminiumlegierungen mit Schutzbeschichtungen versehen, um den Korrosionsprozess aktiv oder passiv zu verhindern. Die klassischen …
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Oxidized mesoporous ZrO2/carbon composites for arsenic removal
… the synthesis and characterization of oxidized mesoporous ZrO2/Carbon composites, determining the best air oxidation time, and comparing the adsorption performances of arsenate on oxidized mesoporous ZrO2/Carbon composites and unoxidized composites. The mesoporous ZrO2/Carbon composites were …
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Supramolecular templating of mesoporous zirconia-based nanocomposite catalysts
… structural properties of these zirconia-based mesoporous materials are related to their activities in solid acid catalysis. The three systems of interest, (i) phosphated zirconia, (ii) zirconia-silica, and (iii) tungstated zirconia, represent mesoporous materials of different acidic strengths …
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Mesoporous Functionalized Materials for Post-Combustion Carbon Dioxide Capture.
… linker, obtained bridged silsesquioxanes had mesoporous structure. A material prepared in the presence of dodecylamine as a template had higher surface area and narrow pore size distribution while the use of sodium dodecylbenzene sulfate resulted in formation of mesopores with wide size …
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Development of tandem catalytic systems utilizing mesoporous silica nanoparticles
… used to synthesize these molecules. Using mesoporous materials, mesoporous silica nanoparticles, specifically, as supports and compartmentalization tools in tandem catalysis can increase recyclability and durability, making an even more efficient and green catalytic system. MSN makes an …
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Unique templating of and applications enabled through mesoporous colloids
… process and applications enabled by utilizing mesoporous colloids, colloidal crystals, and films. Silica colloidal crystals, having colloids of less than 300 nm, were fabricated and used as a template for silicon deposition. Brillouin Light Scattering (BLS) experiments conducted on a silicon …
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Periodic Mesoporous Organosilica: Preparation Characterization and Applications of Novel Materials
… sensing or selective adsorption. Periodic mesoporous organosilicas (PMOs) represent an interesting class of hybrid silica materials because of the wide variety of bridging organic groups which can be incorporated within the precursors [(OR)3Si-R-Si(OR)3] giving rise to materials with …
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Mesoporous organosilica materials with amine functions : surface characteristics and chirality
In this work mesoporous organisilica materials are synthesized through the silica sol-gel process. For this a new class of precursors which are also surfactant are synthesized and self-assembled. This leads to a high surface area functionality which is analysized with copper (II) and water …
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X-ray Scattering Study Of Capillary Condensation In Mesoporous Silica
… relative vapor pressure of the fluid. Periodic mesoporous silica such as MCM-41 and SBA-15 were synthesized and used as the samples with water as the capillary condensation agent.The gas sorption method and SAXS were used to extract the pore parameters of the samples.The stresses acting on the …
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Synthesis and Properties of ordered Mesoporous SiO2-CaO Bioactive glasses
In this project, highly ordered mesoporous SiO2 a?? CaO bioactive glasses were successfully synthesized via surfactant templating route. The formation and bioactivities of the ordered mesoporous bioactive glasses were investigated systematically. In order to investigate the effects of the ordered …
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Development of Mesoporous Silicas, Responsive Polymer Microgels, and Related Nanocomposites
<p>This dissertation covers research on polymer-templated nanoporous materials and functional soft materials, and it consists of four major parts. The first part is on introduction. The next part (Chapters 2-3) describes the research work on the synthesis of silicas with spherical mesopores. …
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Preparation and characterization of mesoporous aluminosilicates from Ca-A zeolite
Three methods have been developed in order to enlarge the pore size of the micropore-type zeolite into a mesopore type: (a) 0.2N HCl acid treatment at 80$\sp\circ$C from which the time of exposure to the acid medium has a great influence on the pore size distribution of the resulting materials. (b) …
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Investigation of physical properties of mesoporous NANO-Ti02 for dye-solar
… this work we report the high-density arrays of mesoporous anatase TiO2 nano-structures derived using the combination of Evaporation Induced Self-Assembly (EISA) and sol-gel methods using Pluronic P123 «EO23 -PO70-EO23» as a surfactant and Titanium isopropoxide «Ti-O'Pr4 » as a starting material …
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