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 12 of 12 for “"UiO-67"”.
-
Functionalized Metal-Organic Frameworks for Water Oxidation Catalysis
… (RuTB) was incorporated into UiO-67 MOF (resulting materials denoted as RuTB-UiO-67) for chemical water oxidation in Chapter 2. Differences of catalytic reaction behavior between homogeneous RuTB and RuTB incorporated in MOF were examined. Based on MOF particle size dependent …
-
Zirconium-Based Metal-Organic Frameworks for Artificial Electrochemical Photosynthesis
… 5,5′-dicarboxylic acid-2,2′-bipyridine into the UiO-67 framework creates a conductive MOF that is also electrochromic. RuBPY is a deep orange color in the standard RuII state and upon oxidation to RuIII it is pale green. The change in absorption profile of the redox center allows for the rate of …
-
The Chemistry of Metal Oxyhydroxides and their 3D Porous Hybrid Materials for the Capture, Transport and Degradation of Toxic Chemicals
… We report and verify that the active sites in UiO-67 MOFs are the metal nodes (oxyhydroxides) and developed a paradigm which correlates the activities of the MOFs, the metal oxyhydroxides and their precursors. This new understanding can help researchers choose the optimum metal for the intended …
-
Activating Mn(III)F3 towards homo- and heterogeneous oxidative catalysts
… sites found within the Metal-Organic Framework UiO-67-bipy. Thus, introducing {Mn(III)F3(bipy)} active sites within a porous MOF to form a (potential) oxidative catalyst that would represent a heterogeneous analogue material to catalysts 1-4. The UiO-67-bipy precursor was made using two …
-
Intrinsic and Extrinsic Catalysis in Zirconium-based Metal-Organic Frameworks
… screening study on a zirconium-based MOF, UiO-66. One of the most commonly studied MOFs, UiO-66 provides an excellent platform for synthetic modulation. Particle size and defect level were measured of 26 synthetic variations and synthetic conditions were found to isolate changes in defect …
-
Mass transport in metal-organic frameworks as a limiting step in size-selective oligomerization
… Herein, chemically stable Zr based MOFs, namely UiO-67 and PCN-777, are investigated as possible candidates to promote size-selective oligomerization catalysis. Using acylated propylene-glycol methyl ethers as model substrates, the mass transport properties of these materials was investigated. …
-
Investigation of Charge Transfer in Metal-Organic Frameworks for Electrochemical Applications
… MOF film immobilized on a conductive substrate, UiO-67-Ru@FTO, for solid-state electrochemiluminescence (ECL). In the presence of tripropylamine as a coreactant, UiO-67-Ru@FTO exhibited higher ECL intensity and better reproducibility compared to corresponding solution-based ECL system. …
-
Doping of Metal Organic Framework (UiO) and for N02 adsorption at ambient Conditions
… Zirconium-based Metal Organic Framework (Zr-MOF) UiO-66 and UiO-67 make them good candidates for metal or amine decoration. The objective of this work was to investigate the effect of metal or amine doping (direct synthesis) on the textural properties and adsorption capabilities of UiO in both …
-
Light Harvesting and Energy Transfer in Metal-Organic Frameworks
… transfer. For our project, we aim to employ UiO-67-on-PCN‐222 composites as model systems to explore the possibility of achieving directional energy transfer in MOF-based core-shell structures. The core–shell composites were synthesized by following a previously published procedure. …
-
Luminescent Properties of Anthracene-based Metal-Organic Frameworks
… found to be isostructural with the well-known UiO-66 and UiO-67 frameworks. However, incorporation of the 1,4-ADCA ligand resulted in large rod-shaped crystals. The absorption spectra of the MOFs are broadened and redshifted compared with that of the corresponding free ligands. The emission …
-
Interfacial Energy Transfer in Small Hydrocarbon Collisions with Organic Surfaces and the Decomposition of Chemical Warfare Agent Simulants within Metal-Organic Frameworks
… groups on the surface of crystallites. Unlike UiO-66, the infrared spectra for UiO-67 and MOF-808, recorded during DMMP exposure, suggest that uptake occurs through both physisorption and chemisorption. The XPS spectra of MOF-808 zirconium 3d electrons reveal a charge redistribution following …
-
Hafnium Metal-Organic Frameworks: Formation Routes and Defect Engineering
… method of modifying its properties. The UiO family of MOFs, comprising hafnium or zirconium clusters and bidentate linkers, is especially promising due to its stability and its ability to incorporate defects. This thesis explores the effect of controlling the synthesis conditions on the …