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 17 of 17 for “"boron-doped diamond"”.
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Trace detection of mercury using boron-doped diamond electrodes
… to develop electrochemical techniques using Boron-doped Diamond (BDD) electrodes for the purpose of detecting mercury in solutions in the ppb-ppt range. Differential Pulse Voltammetry (DPV) was used successfully to develop calibration curves for mercury detection in standard solutions in the …
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Rapid separation of phenolic flavourings by liquid chromatography and nanomolar electrochemical detection at a boron-doped diamond electrode
… properties are given. The characteristics of the boron-doped diamond (BDD) electrode and the coupling of liquid chromatography (LC) with electrochemical detection (ECD) are also described. This work focuses on determining the phenolic analytes that are associated with the distinct flavour of …
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Rapid molecular signature analysis of pseudomonas aeruginosa by direct nanomolar detection of quorum sensing and biomarker molecules at a boron-doped diamond electrode
… of capillary electrophoresis (CE) and the boron-doped diamond (BDD) electrode are given. In this thesis, new approaches to separation and sensing these signaling molecules are developed. A method for the simultaneous separation of signaling molecules PYO, HHQ, and PQS using bare CE coupled …
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Investigation Of Dopamine Dynamics In Bdnf+/- Mice Using In Vivo Microdialysis And Electrochemical Analysis Of Purine And Monoamine Molecules Using A Boron-Doped Diamond Electrode
<p>The goal of the first study was to determine if a reduction in brain-derived neurotrophic factor (BDNF) levels in female mice lead to a dysregulation in their dopaminergic system. Through a series of <i>in vivo</i> microdialysis and slice voltammetry experiments, we have discerned that female …
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Electrochemical Deactivation of Nitrate, Arsenate, and Trichloroethylene
… iron (ZVI), mixed-valent iron oxides, and boron doped diamond film electrode surfaces, respectively. Nitrate ( ) is a common co-contaminant at sites remediated using permeable reactive barriers (PRBs). Therefore, understanding nitrate reactions with ZVI is important for understanding the …
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Cytochrome C biosensor for the determination of trace level arsenic and cyanide compounds
… of selected arsenic and cyanide compounds. Boron Doped Diamond (BDD) electrode was used as a transducer, onto which cyt c was immobilised and used for direct determination of Prussian blue, potassium cyanide and arsenic trioxide by inhibition mechanism. The sensitivity as calculated from …
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The Development of M3+-Doped Mesoporous Ti4O7 Electrode for Pharmaceutical Degradation in Fresh Human Urine
… fabricate metal with valence number three (M3+) doped-mesoporous Ti4O7 planner electrodes. The electrode stability and pharmaceutical degradation performance are collected by galvanostatic test and pharmaceutical degradation rate in a full synthetic urine matrix with four common pharmaceuticals. …
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Electrodeposition of Diamond-like Carbon Films
Electrodeposition of diamond-like carbon (DLC) films was studied on different substrates using two different electrochemical methods. The first electrochemical method using a three-electrode system was studied to successfully deposit hydrogenated DLC films on Nickel, Copper and Brass substrates. …
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Synthesis & retention mechanisms of novel mixed mode stationary phase for detection of specific polar low molecular weight biological samples
… capillary electrophoresis (CE) coupled with boron-doped diamond electrodes for electrochemical detection. The synthesis and characterization of the novel mixed mode stationary phases prepared in this work is an important contribution to the field as the materials prepared exhibited better …
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Electrochemical Disinfection of Liquid Human Waste Using Potentiodynamic Methods and Controlled Electrode Surface Chemistry
… blackwater is investigated using degenerately boron-doped diamond and Magnéli-phase titanium sub-oxide electrodes. It is found that both can be operated in potentiodynamic modes to control surface chemistry and improve generation of biocidal oxidants such as hydrogen peroxide and …
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Development of stationary phase materials and methods for analysis of pharmaceuticals via high-performance liquid chromatography and electrochemical detection
… (LC) and electrochemical analysis at a boron-doped diamond (BDD) electrode this research explores and characterises a novel polymer immobilised porous silica particle phase for fast LC analysis of selected pharmaceutical actives. In this thesis, a Nafion polymer-coated silica stationary …
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A Computational Approach to Efficient Electrode Material Design for Electrochemical Oxidation of PFAS
… extended to other electrode materials such as boron-doped diamond (BDD), SnO2, Bi2O3, and RuO2, highlighting specific influences on the chain-shortening reactions. Additionally, it is shown that the major competing reaction for EAOP is the oxygen evolution reaction (OER). Prevention of OER is …
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Electrochemical Behavior of Carbon Nanostructured Electrodes: Graphene, Carbon Nanotubes, and Nanocrystalline Diamond
… stimulation, and engineer and characterize a boron-doped diamond (BDD) electrode based electrochemical system for disinfection of human liquid waste. </p><p>Carbon nanostructures; ranging from vertically aligned multiwalled carbon nanotubes (MWCNTs), graphenated carbon nanotubes (g-CNTs) to …
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Development of low-cost sensing and separation devices based on macro, micro and nano technology for health applications
… more expensive electrodes including the gold, boron-doped diamond and glassy carbon electrodes. To enhance the sensitivity of these electrodes they were treated with metal nano-particles, gold and palladium. Following on from this, another modification was introduced. The carbonaceous material …
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Electrodeposition of Nb, Ta, Zr and Cu from Ionic Liquid for Nanocomposites Preparation
… imide([BMP][TFSA]) on both boron doped diamond (BDD) and metal substrates in order to determine the reduction path for both single metal and nanometric composites electrodeposition. Electrochemical experiments have been performed at different temperatures in a glove box, …
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Electrical and electrochemical properties of nitrogen-containing tetrahedral amorphous carbon (ta-C) thin films
… YangTetrahedral amorphous carbon (ta-C) is a diamond-like carbon (DLC) material comprised of a mixture of sp2 (~40%) and sp3-bonded (~60%) carbon domains. The physicochemical structure and electrochemical properties depend strongly on the sp2/sp3 bonding ratio as well as the incorporation of …
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Removal of Perfluorooctane Sulfonate (PFOS) and Related Compounds From Industrial Effluents
… exposed to electrochemical pretreatment with boron-doped diamond film electrodes was also investigated. The oxidation decreased the concentration of PFAS and dissolved organic carbon in solution, confirming the destruction of these compounds. However, the oxidative treatment did not enhance …