Index Catalog // ScholarsArchive@OSU

Characterization of CoGe Thin Films and Powders

Creator:: Pfau, Andrew James
Abstract:: Cobalt germanides have been widely studied as semiconductor contact materials, but recent theoretical studies suggest that they may also be excellent catalysts for methane steam reforming with stabilities and activities comparable to noble metal catalysts. In order to study the catalytic activity of cobalt germanides, it is critical to first...
Resource Type:: Masters Thesis

Reversible Covalent Binding of Desferrioxamine B (DFOB) to 2 Polystyrene Microspheres for the Chelation of Aqueous Iron Citrate

Creator:: Touma, Jad G., Kelly, Christine, Coblyn, Matthew, Jovanovic, Goran N., and Schilke, Kate
Abstract:: Desferrioxamine B (DFOB) was reversibly and covalently conjugated to polystyrene microspheres via N-succinimidyl 3-(2-pyridyldithio)propionate (SPDP) crosslinker. DFOB retained post-immobilization activity with at least 89% able to bind Fe(III)-citrate under pH 7.4 and a citrate:iron molar ratio = 100:1. Comparing iron capture by DFOB-activated beads and sulfhydryl (−SH) control beads demonstrated...
Resource Type:: Article

Data-driven imputation of miscibility of aqueous solutions via graph-regularized logistic matrix factorization

Creator:: Behnoudfar, Diba, Simon, Cory M., and Schrier, Joshua
Abstract:: Aqueous, two-phase systems (ATPSs) may form upon mixing two solutions of independently water-soluble compounds. Many separation, purification, and extraction processes rely on ATPSs. Predicting the miscibility of solutions can accelerate and reduce the cost of the discovery of new ATPSs for these applications. Whereas previous machine learning approaches to ATPS...
Resource Type:: Article

Intensification of Solvent Extraction in an Additively Manufactured Microfluidic Separator

Creator:: Touma, Jad George, Coblyn, Matthew, Freiberg, Lucas Joseph, Kowall, Cliff, Zoebelein, Avaline, and Jovanovic, Goran Nadezda
Abstract:: Solvent extraction is an integral chemical and biochemical separation process that is drastically intensified in microfluidic systems. A novel high-throughput micro-separator was additively manufactured for the intensification of liquid–liquid separation. The micro-posts array within the flow plate generated a capillary pressure gradient on the non-wetting organic phase, enabling continuous, membrane-free,...
Resource Type:: Article

The Design and Construction of a Cost-Effective Atomic Layer Deposition System for Thin Film Growth

Creator:: Hong, Youngjoon
Abstract:: This paper describes the construction and use of a cost-effective custom-built atomic layer deposition (ALD) system, as well as the investigation of aluminum oxide atomic layer deposition using trimethylaluminum and water. For this research, a cost-effective ALD system was constructed for less than $8,000 using existing parts that were given...
Resource Type:: Masters Thesis

Fundamental Investigations of Electrocatalysis: Mechanistic Implications of Catalyst Electronic Structure

Creator:: Carvalho, O. Quinn
Abstract:: Heterogeneous catalysis modulates the rate and selectivity of reaction processes by stabilizing a series of intermediate states on solid surfaces, facilitating the production of many commodity chemicals modern society relies upon. Conventional, thermal catalytic processes—conducted at elevated temperatures and pressures—source thermal, mechanical, and chemical potential energy from carbon-hydrogen bonds— combustion...
Resource Type:: Dissertation

Low-Cost Light Trapping Layer via Melting Gel and Hot Embossing Technique

Creator:: Xu, Han
Abstract:: Light trapping plays a phenomenal role in enhancing light confinement and light absorption within the solar cells, thus increasing the optical efficiency of the cell. Different strategies are employed for trapping light photons within the cell. Methods used include a substrate or single layer texturing, light trapping coating, plasmonic gratings,...
Resource Type:: Masters Thesis

Steady-State Diffusion in a Spatially Varying Porous Medium

Creator:: Ferrero, Peter T.
Abstract:: Heterogeneous porous material represents a persistent challenge in the field of engineering. Microscale properties such as the porosity and microchannel torturosity significantly control the macroscale transport characteristics of homogeneous porous medium. Additional complexity is introduced when these small-scale features vary in space. Examples of heterogeneous porous systems include artificial body...
Resource Type:: Masters Thesis

Growth, Characterizations, and Applications of Patterned Nanostructured Thin Film

Creator:: Gao, Zhongwei
Abstract:: A unique microreactor-assisted nanomaterial synthesis and printing process was studied for the fabrication of patterned metal oxide nanostructured thin films. The process uses a continuous flow microreactor to control and generate a reactive chemical flux that was transported to a patterned microfluidic channel. The microreactor-assisted nanomaterial synthesis process can generate...
Resource Type:: Dissertation

Process Intensification toward Reduced Exergy Destruction in Methane Upgrading

Creator:: Freiberg, Lucas J.
Abstract:: Exergy relates to thermodynamic value or usefulness in the universe. In this dissertation, three methods in the realm of "process intensification" are explored to reduce exergy destruction by equipment and processes that are used to convert and upgrade methane. Thermodynamic efficiency of a virtual heat exchanger is improved with a...
Resource Type:: Dissertation

ScholarsArchive@OSU

Characterization of CoGe Thin Films and Powders

Reversible Covalent Binding of Desferrioxamine B (DFOB) to 2 Polystyrene Microspheres for the Chelation of Aqueous Iron Citrate

Data-driven imputation of miscibility of aqueous solutions via graph-regularized logistic matrix factorization

Intensification of Solvent Extraction in an Additively Manufactured Microfluidic Separator

The Design and Construction of a Cost-Effective Atomic Layer Deposition System for Thin Film Growth

Fundamental Investigations of Electrocatalysis: Mechanistic Implications of Catalyst Electronic Structure

Low-Cost Light Trapping Layer via Melting Gel and Hot Embossing Technique

Steady-State Diffusion in a Spatially Varying Porous Medium

Growth, Characterizations, and Applications of Patterned Nanostructured Thin Film

Process Intensification toward Reduced Exergy Destruction in Methane Upgrading

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