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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 31 for “"Nanoporous materials"”.
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Computational Techniques for Studying Nanoporous Materials
… accelerate the discovery and characterization of nanoporous materials. Chaper 1 introduces the field of nanoporous materials/reticular chemistry, provides a brief history of molecular simulation in reticular chemistry, and finally, discusses some key challenges that need to be addressed from a …
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Sillica Nanoporous Materials Adsorption and Release Study
… In this regard, a class of nanostructured materials called mesoporous silicates such as MCM-41, SBA-15 has attracted the attention of many scientists as drug delivery vehicles for their outstanding features like high surface area, high porosity, well-ordered, tunable nanometer pores and …
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Engineering nanoporous materials for application in gas separation membranes
… main theme of this dissertation is to engineer nanoporous materials and nanostructured surfaces for applications in gas separation membranes. Tunable methods have been developed to create inorganic hydroxide nanostructures on zeolite surfaces, and used to control the inorganic/polymer …
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The evaluation of novel nanoporous materials for use in interventional cardiology
… study investigates the cytotoxicity of polymer materials incorporating either Ni or Zn CPO-27 MOFs and NO, finding enhanced cytocompatibility with MOF-incorporated materials. The influence of MOF weight percentage and NO on cell viability, aging effects, and exposure duration on cytotoxicity are …
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Molecular Modeling of the Synthesis of Zeolites and Related Nanoporous Materials
… field is the search for micro- and mesoporous materials. The IUPAC defines a microchannel as a pore with a diameter ranging from 0.25 nm to 2 nm, while a mesopore has a diameter between 2 nm and 50 nm. The limited diffusion rate of guest molecules in the micropores of a conventional zeolite is …
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Characterization and fabrication of nanoporous materials by template directed sol-gel methods
… synthetic strategies to fabricate a variety of nanoporous materials ranging the full range of pore sizes from micro to macro using template assisted sol-gel routes. Both colloidal crystals and surfactant self assemblies were employed as templates.<br/>Initial studies focussed on the fabrication …
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Microwave-Assisted Conversion of Sucrose into 5-Hydroxymethylfurfural over Acidic Nanoporous Materials
… mesoporous organosilicas (PMO) and carbon materials. The HMF yields in the presence of such acidic nanoporous materials were comparable to those using much less environmentally-friendly metal-based catalysts.
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Microscopic diffusion measurements with nanoporous materials: complementary benefits of infrared microimaging and pulsed field gradient NMR
… of the investigation of molecular diffusion in nanoporous materials, which are the primary motivations behind the present work. To rise the challenges, it proposes an option of employing IR microimaging in parallel with PFG NMR in the measurement of the molecular diffusion. The second chapter …
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Characterization Of Nanoporous Materials Using Gas Adsorption Isotherms: Evaluating Their Potential For Gas Storage And Separation Applications
In order to find/design porous materials that could be used in practical applications involving adsorption, it is important to investigate the basic properties (i.e. isosteric heat, specific surface area, binding energy, pore size, pore volume, etc.) of each material. With this aim in mind we have …
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Block Copolymer-derived Porous Polyimides and Carbon for High-Performance Energy Storage
Block copolymer-derived nanoporous materials are featured with microstructures defined by the microphase separation of constituent blocks, enabling various applications in energy storage. Dictated by the molecular weights and volume fractions of constituent blocks, the microphase separation forms …
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Molecular Dynamics Of Ionic Liquids In Nanoporous Electrodes
… of ionic liquids (ILs) confined inside different nanoporous materials. These systems have potential uses in environmental and energy applications. The main goal is to understand how these IL properties are affected by a) characteristics of nanoporous materials such as chemical nature of the pore …
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X-ray Scattering Study Of Capillary Condensation In Mesoporous Silica
The capillary condensation deforms a nanoporous material due to the capillary force generated by the fluid inside the pores. In-situ small and wide angle x-ray scattering(S/WAXS) were used to study the deformation with respect to relative vapor pressure of the fluid. Periodic mesoporous silica such …
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The synthesis of nanoporous hydrogels using sacrificial block copolymers
… nanostructured and porous hydrophilic networks (nanoporous hydrogels) using block copolymers and to understand their transport properties. Nanoporous materials are synthesized by connecting two or more chemically distinct polymer blocks, inducing microphase separation to form a pattern on the …
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Studies in Framework Science Metal-organic Framework Composites BET Theory and Adsorption Reticular Chemistry and DNA Frameworks
… with a strong track record in the study of nanoporous materials were brought together in a round-robin experiment: they were sent 18 anonymised isotherms and were asked to calculate their BET areas in the way they most saw fit. The results from this study show that reproducibility of BET …
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Hydrothermal stability of hierarchically-structured two-dimensional MFI zeolite nanosheets
… are an important class of two-dimensional nanoporous materials. They possess the intrinsic properties of the conventional three-dimensional crystalline silicate/aluminosilicate zeolites and when synthesized in a pillared or intergrown form they exhibit a hierarchical porosity. Despite the …
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Nanomorphology dependent optical and mechanical properties of aerogels
… are very low density, light weight open pore materials. A hypothesis that is under intense current investigation by the scientific community states that the mechanical properties of nanostructured polymers depend on their nanomorphology. Aerogels are nanostructured ultra-lightweight nanoporous …
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Aerogels as diverse nanomaterials
"Aerogels are 3-D light-weight nanoporous materials pursued for their low thermal conductivity, low dielectric constant and high acoustic attenuation. Those exceptional macroscopic properties of aerogels are dependent on the chemical nature of nanoparticles, complex hierarchical solid skeletal …
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Spatially-Directed Interfacial Polymerization
Polymer-based materials and composites are widely used in applications from consumer goods to aircraft, due to their low cost and desirable properties. However, processing of both plastics and composites is often time consuming (taking hours or even days) and requires high temperatures, …
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Development of Mesoporous Silicas, Responsive Polymer Microgels, and Related Nanocomposites
… 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. Chapter 2 is …
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