Index Catalog // ScholarsArchive@OSU

Influence of processing parameters on diffusion of divalent nickel in wet silica sol-gel monoliths

Creator:: Dickson, David J.
Abstract:: The diffusion of divalent nickel (Ni²⁺) from wet silica gels was investigated. Silica gel is gaining interest as an encapsulation matrix for biological components. The transport of biologically relevant species within the gel is determined by the structural characteristics of the gel, which are in turn governed by synthesis parameters....
Resource Type:: Masters Thesis
Full Text:: : Influence of Processing Parameters on Diffusion of Divalent Nickel in Wet Silica Sol-Gel Monoliths

Cu-Ga-S/ZnS Quantum Dots with Silica Melting Gel as a Luminescent Downshifting Coating for Enhancing Solar Photovoltaic Power Generation

Creator:: Chen, Si-Hao
Abstract:: Solar cells, also known as photovoltaic devices, are a class of renewable energy systems that can convert photons into electrons without the carbon dioxide emission. Short-wavelength, high-energy photons in the ultraviolet (UV) range can't be efficiently utilized by most solar cells because of the spectral mismatch. Luminescent downshifting is a...
Resource Type:: Masters Thesis
Full Text:: Engineering presented on September 1, 2021. Title: Cu-Ga-S/ZnS Quantum Dots with Silica Melting Gel as a

Photobiological hydrogen production from the cyanobacterium Synechocystis sp. PCC 6803 encapsulated in sol-gel processed silica

Creator:: Dickson, David J.
Abstract:: Photobiological hydrogen production from live cells of the cyanobacterium Synechocystis sp. PCC 6803 encapsulated in silica gel was investigated. Hydrogen is a dense energy carrier with potential to reduce dependence on fossil fuels, provided a renewable and sustainable means of production can be achieved. Under certain conditions, Synechocystis sp. PCC...
Resource Type:: Dissertation
Full Text:: . PCC 6803 Encapsulated in Sol-gel Processed Silica. Abstract approved: Roger L. Ely

Analytical approach to the quantitative analysis of silicon in plants : its application to plant silica extraction

Creator:: Boone, Carmen E.
Abstract:: The literature available on the silica content of herbaceous biomass, and its relative mobility in leaching/extraction systems, includes studies that have employed several different methods for silica quantification. This makes comparison of the data difficult. The objective of this thesis research was to determine the quantitative relationships between the measured...
Resource Type:: Masters Thesis
Full Text:: infrared absorption and rates of dissolution, show that silica gel, was the form of amorphous silica

Preparation and characterization of polymer-SiO₂ hybrids

Creator:: Ferguson, Morgan L.
Abstract:: In a search for designed materials that mimic those found in biological systems, combining polymers with inorganic materials in sol-gel chemistry processes has gained momentum in the research world since the 1990's. This work methodically investigated the properties of several related polymer-SiO₂ hybrids prepared by a simple methodology that could...
Resource Type:: Dissertation
Full Text:: biological systems, combining polymers with inorganic materials in sol-gel chemistry processes has gained

Biomolecule detection by amplified photoluminescence of germanium doped diatom biosilica

Creator:: Gale, Debra K.
Abstract:: There is significant interest in the fabrication of nano- and micro-structured silica with spatially ordered features, which exhibit enhanced optoelectronic properties with application to the next generation of display devices, semiconductors, and sensors. Currents methods of fabrication employ top down processes which use extremes of temperature, pressure, and power. There...
Resource Type:: Dissertation
Full Text:: silica with spatially ordered features, which exhibit enhanced optoelectronic properties with

Alkali-silica reaction in concrete containing recycled concrete aggregates

Creator:: Adams, Matthew P.
Abstract:: Using recycled concrete aggregate (RCA) as a replacement for natural aggregate in new concrete is a promising way to increase the overall sustainability of new concrete. This has been hindered, however, by a general perception that RCA is a sub-standard material due to the lack of technical guidance, specifically related...
Resource Type:: Masters Thesis
Full Text:: presented on January 9, 2012 Title: Alkali-Silica Reaction in Concrete Containing Recycled Concrete

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
Full Text:: attention. Melting gels are a kind of organic-inorganic hybrids silica gel, which are rigid at room

Synergistic Effects of Alkali Silica Reaction (ASR) and Fly Ash on the Corrosion Characteristics of Reinforced Concrete Systems

Creator:: Mazarei, Vandad
Abstract:: Alkali silica reaction (ASR) and corrosion of reinforcement are two deterioration mechanisms in reinforced concrete (RC) structures. These deterioration mechanisms can significantly damage a RC structure and reduce its service life. Supplementary cementitious materials (SCMs) are commonly used to improve the durability of RC systems containing reactive aggregate that are...
Resource Type:: Masters Thesis
Full Text:: analyses performed by the researchers showed that the ASR gel has high silica content, lower calcium

A Comprehensive Mechanistic Study on Using Fine Lightweight Aggregate to Mitigate Alkali-silica Reaction

Creator:: Li, Chang
Abstract:: Previous research has shown that using fine lightweight aggregate (FLWA) can be a promising strategy to mitigate alkali-silica reaction (ASR) in mortar and concrete. While several possible theories were proposed by researchers, discrepancies in testing methods, materials, and supporting evidence still exist. Therefore, this study was initiated. There are two...
Resource Type:: Dissertation
Full Text:: to explain the expansion of ASR gel [8]. As mentioned above, reactive silica is one of the major

ScholarsArchive@OSU

Influence of processing parameters on diffusion of divalent nickel in wet silica sol-gel monoliths

Cu-Ga-S/ZnS Quantum Dots with Silica Melting Gel as a Luminescent Downshifting Coating for Enhancing Solar Photovoltaic Power Generation

Photobiological hydrogen production from the cyanobacterium Synechocystis sp. PCC 6803 encapsulated in sol-gel processed silica

Analytical approach to the quantitative analysis of silicon in plants : its application to plant silica extraction

Preparation and characterization of polymer-SiO₂ hybrids

Biomolecule detection by amplified photoluminescence of germanium doped diatom biosilica

Alkali-silica reaction in concrete containing recycled concrete aggregates

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

Synergistic Effects of Alkali Silica Reaction (ASR) and Fly Ash on the Corrosion Characteristics of Reinforced Concrete Systems

A Comprehensive Mechanistic Study on Using Fine Lightweight Aggregate to Mitigate Alkali-silica Reaction

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