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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 12 of 12 for “"Particle size and morphology"”.
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Influence of particle size and morphology of Pt₃Co/C on the oxygen reduction reaction
… i.e. platinum. Platinum is a limited resource and expensive. Its price has been one of the major drawbacks in wide scale commercialisation of fuel cells. In an effort to improve the activity of the catalyst and therefore reduce Pt loadings on the catalyst, Pt can be alloyed with transition …
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Formulation development of a novel antivirulence compound for enhanced pharmacokinetic properties
… dissertation, plate-like or tube-like C790 nanoparticles with thickness down to one hundred nanometers have been successfully produced using antisolvent precipitation- ultrasonication method. C790 nanoparticles, in the form of suspensions, have exhibited remarkably enhanced dissolution rate …
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In-situ steric stabilization of ultrafine titania particles synthesized by a sol-gel process
… concerns the synthesis of ultra-fine titania particles starting with titanium ethoxide as a precursor. The particle size and morphology was controlled using polymeric stabilizers which imparted in-situ steric stability during the particle growth. An attempt was made to elucidate the factors …
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Pressureless infiltrated alumina and zirconia based steel - MMCs
Alumina and zirconia based steel-MMCs were produced by pressureless Ti-activated melt infiltration using a high vacuum furnace. The effect of particle size and morphology on the formation of a ceramic network in-situ and MMC properties were investigated using three different alumina powders. The …
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Microemulsions formation, stability and their characterisations
… thesis is concerned with aspects of the surface and colloid chemistry of various microemulsion systems stabilised by pure nonionic surfactants and alcohol as well as mixtures of nonionic and anionic surfactants. Phase equilibria and interfacial characteristics of the systems are studied with a …
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Nichtwässrige Synthese und Bildungsmechanismus von Übergangsmetalloxid-Nanopartikeln = Nonaqueous synthesis of transition-metal oxide nanoparticles and their formation mechanism
In this work, the nonaqueous synthesis of binary and ternary metal oxide nanoparticles is investigated for a number of technologically important materials. A strong focus was put on studying the reaction mechanisms leading to particle formation upon solvothermal treatment of the precursors, as an …
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Improving Evaporative Light Scattering Detector performance using Experiments and Modelling
… Detector (ELSD) detects analyte concentration and is often used in conjunction with chromatographic techniques, wherein the chromatographic eluent is atomised to produce a spray which is dried in a ‘drift-tube’ and detected via light scattering. At present, in the wider literature, the …
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Production of strengthened copper materials by Mechanical Milling-Mechanical Alloying and Spark Plasma Sintering
Copper is widely used in many applications demanding high thermal and electrical conductivity, unfortunately its low hardness and wear resistance limit its performance. Work hardening has been proposed as a successful strengthening mechanism for the production of harder copper material, keeping the …
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Investigation of Pharmaceutical Mass Transfer Phenomena Using Molecular Dynamics Simulations
… (MD) simulation has been widely used in understanding the physical basis of the structure and function of biological macromolecules. However, its application in pharmaceutical research is still at an early stage. This dissertation attempts to establish the use of MD simulation in studying …
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Connecting Thermodynamics and Kinetics of Ligand Controlled Colloidal Pd Nanoparticle Synthesis
Colloidal nanoparticles are widely used for industrial and scientific purposes in many fields, including catalysis, biosensing, drug delivery, and electrochemistry. It has been reported that most of the functional properties and performance of the nanoparticles are highly dependent on the particle …
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Stress Effects on Phase Morphological and Compositional Non-uniformity in Intercalation Compounds
… important applications in rechargeable batteries and hydrogen storage systems. Solute insertion into or extraction from these compounds frequently induces phase transformations, and the resultant microstructure evolution plays an important role in the (de)intercalation kinetics, performance and …
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The rational design of drug crystals to facilitate particle size reduction. Investigation of crystallisation conditions and crystal properties to enable optimised particle processing and comminution.
… quality attributes for formulation preparation and drug delivery remains a major challenge in the pharmaceutical sciences. It is therefore important that the relationships between crystal structure, the mechanical properties of powders and their subsequent influence on processing behaviour are …