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 20 of 357 for “"cyclic voltammetry"”.
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Analysis of accelerants by gas chromatography-mass spectrometry and cyclic voltammetry for biosensor development
… electrochemical analytical techniques such as cyclic voltammetry. An overview of all these areas allows a theory to be brought together, that a biosensor could be created for the presumptive detection of accelerants at fire scenes, a sensor with a high degree of discrimination power achieved …
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Improving Fast-Scan Cyclic Voltammetry and Raman Spectroscopy Measurements of Dopamine and Serotonin Concentrations via the Elastic Net
… human brain using a technique known as fast-scan cyclic voltammetry, for example from patients undergoing deep brain stimulation (DBS) electrode implantation surgery. In this work, we aimed to assess the feasibility of obtaining veridical dual measurements of serotonin and dopamine from substrates …
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Hydrogen storage in pt/carbon nanotube sheets
… source and electrochemical deposition under cyclic voltammetry (CV). To verify platinum deposition on the surface of the CNT sheets, a Scanning Electron Microscope (SEM) was used to obtain images, and Energy Dispersive X-ray (EDX) spectroscopy was used to determine the percentage of platinum …
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Production of nano-templated surfaces for quartz crystal microbalance
… interpretation of the response of simultaneous cyclic voltammetry and microgravimetry measurements. Based on some experimental observations during the production stage, some interesting details of the templating mechanisms were uncovered. These were concerned with the influence of the external …
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Electrochemical kinetics of thin film vanadium pentoxide cathodes for lithium batteries
… films were quantified using slow scan DC cyclic voltammetry and AC cyclic voltammetry. The reaction rate was found to be potentially limiting at moderate to high current rates (> 200 [mu]A/cm²).
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Controlled electrodeposition of metal nanocentres for catalysis
… the backward scan. Several approaches, such as cyclic voltammetry, single potential step and doublepulse potential step deposition were used to electrodeposit platinum and gold nanocentres. Isolated and hemispherical nanocentres of platinum and gold were successfully electrodeposited onto carbon …
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Modified Electrodes for Amperometric Determination of Glucose and Glutamate Using Mediated Electron Transport
… and shown to be electrostatically bound by cyclic voltammetry. Model films were made of FePAA and poly(styrenesulfonate) to determine if multilayer films could be assembled using electrostatic assembly. These experiments demonstrated that 7 bilayers is the maximum number of bilayers …
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Synthesis and properties of nanoparticulate titanium dioxide compounds
… assessed by both X-ray diffraction (XRD) and cyclic voltammetry (CV). Cyclic voltammetry studies were made possible by construction of a specially designed titanium electrode upon which the nanotubes were prepared. CV studies established a positive correlation between crystallinity and …
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Structure and Evolution of Intermetallic and Metallic Overlayers Onfcc(111) Metal Surfaces
… in aqueous solution was studied with STM and cyclic voltammetry. This system resulted in three linear overlayer structures which do not directly reflect the substrate symmetry. This result is in direct contrast to the majority of the UPD literature.
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Polymer Coated Electrodes as Microelectrochemical Media
… in a poly(4-vinyl pyridine) film showed that cyclic voltammetry can indeed be done successfully with this system.
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PEDOT Electrodes as Redox Mediators for Determination of Antioxidants in Beverages
… low sensitivity, interfering agents etc. Cyclic voltammetry at inert electrodes is another method for antioxidant determination. Although this method is easy to apply and gives rapid results, the sensitivity of an electrode with a 1 mm dia. is not adequate to analyse antioxidants at levels …
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Towards Combined Computational and Experimental Studies on Toxicity of Silver Nanoparticles
… pathway. Thus, computational methods for cyclic voltammetry and absorption spectroscopy that use DFT and TD-DFT, respectively, were improved to provide more accurate electronic and optical properties. Cyclopenta-fused polycyclic hydrocarbons (CP-PAHs) with available experimental data for …
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Electrochemical impedance modelling of the reactivities of dendrimeric poly(propylene imine) DNA nanobiosensors
… based on electrochemical impedance spectroscopy. Cyclic voltammetry (CV), differentia pulse voltammetry (DPV), square wave voltammetry (SWV) and electrochemical impedance spectroscopy (EIS) techniques were used to study and model the electrochemical reactivities of the nanomaterials on glassy …
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The use of cyclodextrin template-based metal oxide nanomaterials in the development of electrochemical sensors for phenolic endocrine disruptor compounds
… infrared (ATR-FTIR), X-ray diffraction (XRD), cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS) and chronoamperometry (CA). The TEM shows that the surface morphology has no difference between nanoparticles prepared in the presence and absence of beta-cyclodextrin β-CD), …
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Fabrication and Characterization of a Disk Ring Shaped Dual Nanometer-Sized Electrode and Its Application to Generation-Collection.
… in cylindrical glass pipette plated with gold. Cyclic voltammetry has been used to characterize the electrodes. Our results show that both electrodes can work individually and can accomplish generation/collection experiments. Factors that may affect the performance of the electrodes as well as …
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Study of Copper Electrodeposition on Ruthenium Oxide Surfaces and Bimetallic Corrosion of Copper/Ruthenium in Gallic Acid Solution
… and underpotential deposition (UPD) waves in cyclic voltammetry (CV), efficiency of Cu deposition dropped off indicating that interfacial binding strength between Cu and Ru oxides was weakened when the Ru surface was covered with irreversible oxide and native oxide. Also, Cu UPD was hindered …
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Investigating the interfacial process and bulk electrode chemistry in tungsten oxide electrochromic materials
… degradation in these materials during 3,000 cyclic voltammetry cycles. Through the application of novel cell design, synchrotron/electron spectroscopic, and imaging analyses, we observe that the interface between the WO3 electrode and 0.5 M sulfuric acid electrolyte undergoes constant changes …
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One-Dimensional nanostructured polymeric materials for solar cell applications
… thermal gravimetric analysis (TGA) and cyclic voltammetry (CV) experiments. Devices fabricated from these materials were characterized under simulated AM 1.5 at 800 mW.
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The Development of Sustainable Hydrometallurgical Processes for the Recovery of Precious Metal
… redox reaction during adsorption process using cyclic voltammetry technique. Synthetic solution of gold is prepared with dissolution of gold (III) chloride in hydrochloric acid, sodium thiosulfate and sodium thiourea lixiviants. Cedar wood bark is pre-treated with dilute and concentrated …
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Heteroleptic dirhodium (II,II) complexes: synthesis, spectroscopy and applications in hydroformylation and hydroaminomethylation catalytic reactions
… metal complexes. As such, electroanalysis using cyclic voltammetry indicated variations in the metal-centred redox processes for the title complexes. The complexes obtained were used as pre-catalysts for the hydroformylation and hydroaminomethylation of olefins, an unprecedented homogenous …
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