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.
Results
Showing 1 to 20 of 22 for “"metal nitrides"”.
-
"Reactive hard templating" : from carbon nitrides to metal nitrides
… scale by classical templating approaches. Metal nitrides are such kind of materials. They are usually produced by the conversion of metals or metal oxides in ammonia flow at high temperature (T > 1000°C), which make the application of classical templating techniques difficult. Graphitic …
-
THE REACTIVITY OF SOME TRANSITION METAL NITRIDES AND CARBIDES
The formation and oxidation of transition metal nitrides and carbides is reviewed and the crystal structures and types of bonding are discussed. Types of nitrides and carbides are categorized in terms of physical and chemical properties and type of bonding. The principles of sintering are …
-
Lattice dynamics and electron/phonon interactions in epitaxial transition-metal nitrides
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2015-09-29 without embargo terms
-
Synthesis and characterization of transition metal nitrides and carbides for catalysis and electrochemistry application
… cellulose, sucrose, glucose and lignin) towards metal (Ni0), metal alloy (Pd0.9Ni0.1, Pd0.5Ni0.5, Fe0.5Ni0.5, Cu0.5Ni0.5 and W0.15Ni0.85) and ternary carbide (Mn0.75Fe2.25C) nanoparticles embedded in carbon. In the interest of battery application, MnN0.43 nanoparticles surrounded by a graphitic …
-
Evaluation of metal nitrides and borides as alternative electrocatalyst support materials for polymer electrolyte fuel cells
… of the fuel cell, such as weakening of metal-support interaction which results in Pt detachment, dissolution and sintering. Hence, the electrochemical active surface area is significantly reduced. It is clear that there is an urgent need for more robust, high performance alternative …
-
Nonaqueous syntheses of metal oxide and metal nitride nanoparticles
… work, we have shown new strategies to synthesise metal oxide and metal nitride nanomaterials. The first part of the work deals with the study of nonaqueous synthesis of metal oxide nanoparticles. We succeeded in the synthesis of In2O3 nanopartcles where we could clearly influence the morphology by …
-
Investigation and development of titanium nitride solid-state potentiometric pH sensor
… of limitations of glass electrodes, various metal oxides have been investigated and proposed as potential electrode materials for the development of pH sensors. Solid metal sensors offer unique features such as insolubility, stability, mechanical strength, and possibility of miniaturization. …
-
A Platform for Practical Nanophotonic Systems Nitrides and Oxides for Integrated Plasmonic Devices
… has largely been limited to the use of noble metals as plasmonic materials, largely due to the high conductivity (low loss) and wide availability in research institutions. However, the research which follows focuses on the development of two alternative material platforms for nanophotonics: …
-
Intermetallic compounds by reductive annealing
… a new synthetic route to binary and ternary intermetallic compounds, which avoids the need for reaction at very high temperatures, multi-step reactions, reaction under vacuum and/or the synthesis of precursors. The route was adapted from a synthetic route reported for the synthesis of ternary and …
-
Design, fabrication, and characterization of germanium MOSFETs with high-k gate dielectric stacks based on the nitride interfacial layers
… Proposed interlayers include GeON, Si, and metal nitrides such as AIN and Hf3N4. This work focuses on the fabrication and characterization of germanium MOSFETs with GeON, Hf3N4, and AIN interlayers. WN/A1203/AIN gate stacks deposited by atomic layer deposition (ALD) were investigated in …
-
Materials For Energy: Complex Oxides And Nitrides For New Polymer Electrolyte Membrane Fuel Cell Catalysts And Supports
… DiSalvo group has focused on doped, conducting metal oxides, yet materials with suitable conductivities have been difficult to prepare. In this work, binary and ternary transition metal nitrides are explored as potential replacements for carbon-based catalyst supports. Many nitrides have the …
-
Synthesis, characterisation, and evaluation of supported cobalt molybdenum nitride for Fischer-Tropsch reaction
… similar electronic properties to those of noble metals. Other transition metal nitrides such as Co nitride and Co-Mo nitride were also investigated in this study. The physicochemical attributes of nitride catalysts were examined by BET surface area, particle dispersion, acid site strength & …
-
Refractory oxides based multilayered core@shell plasmonic nanostructures
… and in particular the best ones made of noble metals, are soft and have relatively low melting points, which are easily deformed at elevated temperatures. This has become an urgent bottleneck issue holding back the commercialisation of many plasmonic technologies and set significant barriers …
-
Synthesis, characterization and chemical vapor deposition of transition metal di(tert-butyl)amido compounds
Although the transition metal chemistry of many dialkylamido ligands has been well studied, the chemistry of the bulky di(tert-butyl)amido ligand has been largely overlooked. The di(tert-butyl)amido ligand is well suited for synthesizing transition metal compounds with low coordination numbers; …
-
Electrochemical Pathways to Decarbonizing Urea and Ammonia Production
… synthesis (LiMAS) was investigated. Lithium metal spontaneously reacts with N₂ to form lithium nitride (Li₃N), which can subsequently be protonated to yield NH₃. A non-aqueous electrochemical system was developed and optimized by varying the lithium salt (e.g., LiClO₄ vs. LiBF₄), current …
-
Zirconium nitride contacts for cadmium telluride solar cells
… μΩ-cm, comparable to that of good conductive metals, which would permit thin back contacts. Annealing at temperature up to 270°C for 30 minutes did not affect the structure or properties of the ZrN. The effect of the thickness of the ZrN films on their back contact performance was studied. As …
-
Synthesis and characterization of nitrogen-rich chemical vapor deposition precursors
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2027-08-01
-
Functional materials for thermal regulation
… and the lithiation-dependent semiconductor to metal phase transition as supported by Raman spectroscopy. Further, the ratio of the in-plane to through-plane thermal conductivity is enhanced by the disorder in bulk crystals. These results suggest that stacking disorder and mixture of phases is …
-
Designing Two-Dimensional Nanomaterials for Electrocatalytic Clean Energy Conversion
… structure and HER activity of non-noble metals (Ni and Co) 2D layer directly and continuously without changing their chemical composition. The dopant-induced charge redistribution in the Ni metal 2D layer significantly influences its catalytic performance for the HER in alkaline media. …
-
Development of New Cathodic Interlayers with Nano-Architectures for Lithium-Sulfur Batteries
… building functional interlayers by integrating metal oxides with conductive frameworks. The derivatives of the TiO2/C interlayer was synthesized by changing the precursor concentration and carbonization temperature. Finally, a dual-interlayer was fabricated by simply coating titanium nitride …
Page 1 of 2