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Showing 1 to 20 of 45 for “"Platinum: Pt)"”.
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The Synthesis, Characterization, Spectroscopic and Biological Activity Studies of Pt(Ii) and Pd(Ii) Cyanoximates
Some of the platinum (Pt) and palladium (Pd) compounds are established anticancer inorganice pharmaceuticals. Substantial biological activity (growth regulation, antimicrobial, pesticide detoxifying) was also found during the last two decases of investigations of cyanoximes. An attempt has been …
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Towards an understanding of peptide-inorganic interactions
… principles through which interactions at peptide-inorganic interfaces occur. The inorganic materials; crystalline zinc oxide (ZnO) and platinum (Pt) together with specific binding peptides identified using the phage display technique and alanine scanning for mutant sequences selected on the …
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Probing Interfacial Potential under Transient Conditions via Second Harmonic Generation at Pt-water interface
… has been challenging. In this thesis, an optical method based on second harmonic generation (SHG) spectroscopy is used to monitor the electrochemical potential at the platinum (Pt)–water interface during a potential sweep. The results are compared to the constant potential baseline. We …
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Electrical Characterization of Ruthenium Dioxide Schottky Contacts on GaN
A film which is optically transparent and electrically conductive is difficult to come by but can be realized in ways such as doping an oxidized film or by oxidizing a metallic film resulting in what is known as a transparent conducting oxide (TCO). TCO's have many important uses in electronics, …
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Evaluation of TiO2 as a Pt-Catalyst Support in a Direct Ethanol Fuel Cell
… dioxide (Nb-TiO2) is investigated as a platinum (Pt) support due to its increased resistance to corrosion compared to the common catalyst support, carbon. It has also been seen in the literature that TiO2 is able to adsorb OH and assist in freeing Pt sites by further oxidizing COad to …
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Impedance Characterization and Modeling of Subcellular to Micro-Sized Au, Pt, TiN, and ITO Electrodes With PEDOT:PSS-Coating For Bioelectrical Interfaces
… electrode materials consisting of gold (Au), platinum (Pt), indium tin oxide (ITO), and titanium nitride (TiN) coated with/without organic polymer, poly(3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS), with electrode diameters (D) ranging from millimeter to subcellular (<10 µm) …
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Metal-assisted chemical etching of β-gallium oxide
… The Schottky barrier heights (SBHs) between platinum (Pt) and different MacEtch-formed β-Ga2O3 surfaces and sidewalls are found to decrease as the aspect ratio of the β-Ga2O3 structure increases. This behavior is attributed to the varying oxygen composition on the surface after MacEtch, as …
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Multimaterial Fibers for Biosensing Application Using Electrochemistry
… and the electrode material presented is platinum (Pt). Platinum is employed because of its biocompatibility property. The electrodes are placed in the fiber by the method of convergence fiber drawing and the fiber ends are stripped to expose the electrode for application. To make the …
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Carboxylic Acid Hydrodeoxygenation over Supported Noble Metal Catalysts
… as a probe molecule, it was found that supported platinum (Pt) and ruthenium (Ru) catalysts have two main issues: selectivity and stability. Both metals are quite unselective towards HDO products, multiple chemistries occur over the catalysts that lead to a myriad of undesired products. …
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Engineering carbide nanoparticles coated with noble metal monolayers for catalysis
… (Pd), silver (Ag), osmium (Os), iridium (Ir), platinum (Pt), and gold (Au). Together, these corrosion-resistant elements serve as nature's universal catalysts by binding reactant molecules neither too strongly nor too weakly. This allows for rapid catalytic transformations of reactants into …
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Preparation and characterisation of inorganic nanostructured support materials for polymer electrolyte fuel cells
… associated with the current carbon supported platinum (Pt/C) catalysts. Carbon support corrosion and Pt dissolution/aggregation on the catalyst layer within the fuel cell have been confirmed as the major contributors to the degradation of the Pt/C (Shao, et al., 2007). Attention needs to be …
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Impact of Electrical Contacting Scheme on Performance of InGaN/GaN Schottky Solar Cells
… of highly resistive p-type InGaN. In this study, platinum (Pt) is used to form a Schottky barrier with an InGaN/GaN absorber region. Electrical and optical properties of platinum films are investigated as a function of their thickness. InGaN/GaN Schottky solar cells with platinum as the …
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Study of semiconductor and metal surfaces using a novel scanning Kelvin probe.
… of the Delta phi peak during the initial adsorption curve decreases in a linear fashion with increasing substrate temperature. Moreover, the transient work function measurements on the O2/Si(111) surface at 300 K show that the lifetime of the precursor states depend strongly on oxygen exposure. …
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Catalytic membrane reactor-separator for environmental applications.
… the technique in a bi-layer membrane repair concept for gas separation membranes has been studied. In addition, several methods were used to characterize the membranes, including scanning electron microscopy, energy diffraction X-ray, nitrogen adsorption and gas permeation. In the first part of …
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Dielectric and Ferroelectric Properties of Lead Lanthanum Zirconate Titanate Thin Films for Capacitive Energy Storage
… thickness with different bottom electrodes, e.g. Platinum (Pt) and LaNiO<sub>3</sub> (LNO). The final fabricated PLZT film capacitors will show strong potential for the energy storage application. The method adopted is the acetic acid assisted sol-gel deposition for the PLZT thin films. The wet …
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Oxidative stress markers in neurological diseases and disorders: electrochemical detection of hydrogen peroxide and nitric oxide
… a previously characterised Nafion®-modified platinum (Pt) electrochemical sensor. Additionally, the preliminary in-vitro development of a paired catalase based Pt sensor for the purpose of H2O2 detection in the physiological environment has previously been reported by our research group. A …
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Electrochemical studies of carbon monoxide oxidation on platinum and platinum based fuel cell catalysts
… monoxide (CO) oxidation on surfaces of bulk platinum (Pt) and Pt based particle catalysts were conducted. Investigations focused on understanding relationships between surface characteristics of Pt electrodes and the oxidation kinetics of monolayer quantities of adsorbed CO. Cyclic …
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Urea Pre-treatment of N2-annealed Transition Metal Oxides for Low Cost and Efficient Counter Electrodes in Dye-sensitized Solar Cell
… costs and simple fabrication techniques. Platinum (Pt) was used as a catalyst in the counter electrode for DSSCs. Metal oxides have been used as an alternative material to Pt. The introduction of oxygen vacancies inside metal oxides helps to facilitate electron transport to the electrolyte …
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Sulphur dioxide oxidation mechanism on Pt surfaces : a DFT study
… energy in order to lower fossil fuel consumption and its environmental impact. Hydrogen (H2) has been proposed as a viable alternative to fossil fuels due to its high energy per unit mass, as well as its low environmental impact. Despite numerous methods that exist for obtaining H2, …
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Synthesis and characterization of TiO2 nanotube Schottky diodes
… mechanism and was used to deposit a continuous platinum (Pt) Schottky contact throughout the inner walls of the TiO2-NTs. Any defects found in the nanotubes, such as cracks, led to Pt atoms reaching all areas, forming an electrical short between the anode and cathode. To address this issue, …
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