Global ETD Search
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 10 of 10 for “"electrostatic adsorption"”.
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Preparation And Characterization Of Self-Assembled Monolayers And Mesoscale Protein Patterning
… charged making it a good candidate for electrostatic adsorption on the negatively charge -COO- group. Fluorescence images confirm formation of lysozyme across the silicon wafer. The patterned Si(100) wafer can be used as a biosensor against lysozyme antibodies. </p> <p>Another approach …
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Gold catalysts prepared by ion exchange for use in ethylene glycol oxidation: An exploratory study
… prepared at different pHs theorised to influence electrostatic adsorption differentially. Calcination was conducted at 300ºC in hydrogen. Gold loading was established using Atomic Absorption Spectroscopy (AAS) and Thermogravimetric Analysis (TGA). Loading to full capacity was noted in …
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Iron oxide amended biosand filters for virus removal
… (BSF) media would increase virus removal due to adsorption. The proposed mechanism is electrostatic adsorption of negatively charged virion particles to positively charged iron oxides formed during the corrosion of zerovalent iron. Initial tests conducted using continuous flow, small-scale glass …
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Synthesis and Characterization of Surface-Functionalized Magnetic Polylactide Nanospheres
… were complexed with magnetite nanoparticles by electrostatic adsorption of the carboxylates onto the iron oxide surfaces, and these complexes were dispersible in dichloromethane. The polylactide tailblocks extended into the dichloromethane and provided steric repulsion between the …
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Synthesis and Characterization of Polylactide-siloxane Block Copolymers as Magnetite Nanoparticle Dispersion Stabilizers
… were complexed with magnetite nanoparticles by electrostatic adsorption of the carboxylates onto the iron oxide surfaces and these complexes were dispersible in dichloromethane. The poly(L-lactide) tailblocks extended into the dichloromethane and provided steric repulsion between the …
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Manganese promotion of a Co/SiO2 Fischer-Tropsch catalyst
… synthesis via the enhancement of CO adsorption and dissociation. The base catalyst is prepared by impregnation (IMPR) of the SiO2 support with cobalt(II) nitrate hexahydrate followed by calcination at 230 °C under a continuous flow of air. This IMPR approach resulted in the successful …
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Preparation, Characterization and Evaluation of Bimetallic Catalysts Prepared by Electroless Deposition Methods
… of a catalyst, (2) does not result in the electrostatic adsorption of the reducible metal salt on the catalyst support, and (3) gives controlled rates of catalytic deposition on the primary catalyst surface. In this dissertation, the systematic development of such stable electroless bath(s) …
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Hybrids Based on Layered Silicates
… onto the negatively charged clay surface via electrostatic adsorption. First, hybrid nanofillers were synthesized to improve the mechanical properties of a homopolymer matrix by combining a shear-stiff synthetic K-hectorite with a tailored surface activity. For this, the synthetic …
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Deposition of Au/Pt on Co/SiO 2 for Fischer-Tropsch synthesis
… catalyst with platinum and gold by strong electrostatic adsorption (SEA) is investigated. The promotion with these catalysts with platinum and gold by this method is achievable however subsequent calcination results in extensive sintering of gold particles (this was not observed in the …
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Synthesis of anion exchange/activated carbon fiber hybrid materials for aqueous adsorption of toxic hexavalent chromium
… analysis. The ion exchange property and adsorption performance towards Cr(VI) were also studied comprehensively. HACAX displays not only very high mesopore content with a surface area up to 1085 m2/g based on coating, but also good strong base ion exchange capacity up to 1.5 meq/gC and …