A5102865451- Zeolite Catalysis and Synthesis
- Radioactive element chemistry and processing
- Metal-Organic Frameworks: Synthesis and Applications
- Catalysis and Hydrodesulfurization Studies
- X-ray Diffraction in Crystallography
- Polyoxometalates: Synthesis and Applications
- Nuclear materials and radiation effects
- MXene and MAX Phase Materials
- Advancements in Battery Materials
- Geological and Geochemical Analysis
- Energetic Materials and Combustion
- Extraction and Separation Processes
- Nuclear Materials and Properties
- Metallurgical Processes and Thermodynamics
- Nuclear reactor physics and engineering
- Catalytic Processes in Materials Science
- 2D Materials and Applications
- Thermal and Kinetic Analysis
- Advanced Materials Characterization Techniques
- Luminescence Properties of Advanced Materials
- Advanced Memory and Neural Computing
- Carbon dioxide utilization in catalysis
- nanoparticles nucleation surface interactions
- Advanced ceramic materials synthesis
- Metal Extraction and Bioleaching
Washington State University
2019-2023
Pacific Northwest National Laboratory
2023
Los Alamos National Laboratory
2019-2022
Nanoscale multi-principal element intermetallics (MPEIs) may provide a broad and tunable compositional space of active, high-surface area materials with potential applications such as catalysis magnetics. However, MPEI nanoparticles are challenging to fabricate because the tendency particles grow/agglomerate or phase-separated during annealing. Here, we demonstrate disorder-to-order phase transition approach that enables synthesis ultrasmall (4 5 nm) stable (up eight elements). We apply just...
MXenes are ultra-thin two-dimensional layered early transition-metal carbides and nitrides with potential applications in various emerging technologies, such as energy storage, water purification, catalysis. synthesized from the parent MAX phases different etching agents [hydrofluoric acid (HF) or fluoride salts a strong acid] by selectively removing more weakly bound crystalline layer of Al Ga replaced surface groups (-O, -F, -OH, etc.). Ti3C2Tx MXene CoF2/HCl has heterogeneity due to...
The stability of functional materials in water-containing environments is critical for their industrial applications. A wide variety metal–organic frameworks (MOFs) synthesized the past decade have strikingly different apparent stabilities contact with liquid or gaseous H2O, ranging from rapid hydrolysis to persistence over days months. Here, we show using newly determined thermochemical data obtained by high-temperature drop combustion calorimetry that these differences are...
Lanthanide disilicates and oxyapatites have potential roles in high-temperature applications as thermal (TBC) environmental barrier coatings (EBC) or possible alteration phases geological nuclear waste repositories. However, those Ce3+-bearing silicates only been limitedly studied. In this work, we performed detailed structural thermodynamic investigations on A-Ce2Si2O7 (tetragonal, P41) Ce4.67(SiO4)3O (hexagonal, P63/m). The behaviors coefficients of expansion were determined by situ...
Orthosilicates adopt the zircon structure types (I41/amd), consisting of isolated SiO4 tetrahedra joined by A-site metal cations, such as Ce and U. They are significant interest in fields geochemistry, mineralogy, nuclear waste form development, material science. Stetindite (CeSiO4) coffinite (USiO4) can be formed under hydrothermal conditions despite both being thermodynamically metastable. Water has been hypothesized to play a role stabilizing forming these orthosilicate phases, though...
Aluminum-based metal–organic frameworks (Al-MOFs) have shown promise as commercially valuable materials due to the variety of applications, excellent thermal, hydrothermal, and chemical stabilities, abundance aluminum. In this work, for first time, we report solvent-free synthesis aluminum trimesate (Al-BTC) MOFs (MIL-100(Al), MIL-96(Al), MIL-110(Al)) with phase selectivity high yield. These were traditionally prepared HF, HNO3, bulk solvents, but these methods struggled produce pure-phase...
Understanding the stability of porous materials, especially metal–organic frameworks (MOFs), is central to defining their applications in gas storage, separation, and catalysis. Herein, integrating high-temperature drop combustion calorimetry as well simultaneous thermal situ structural analyses, we performed a comprehensive study on thermodynamic, thermal, stabilities MOF air. A family MIL-53 (Al1–xCrx) with systematically tuned metal contents was intentionally chosen considering unique...
Thermal stability and thermodynamic properties of aluminum(III)-1,3,5-benzenetricarboxylate (Al-BTC) metal–organic frameworks (MOFs), including MIL-96, MIL-100, MIL-110, have been investigated through a suite calorimetric X-ray techniques. In situ high-temperature diffraction (HT-XRD) thermogravimetric analysis coupled with differential scanning calorimetry (TGA-DSC) revealed that these MOFs undergo thermal amorphization prior to ligand combustion. stabilities Al-BTC follow the increasing...
Abstract We used deep-learning-based models to automatically obtain elastic moduli from resonant ultrasound spectroscopy (RUS) spectra, which conventionally require user intervention of published analysis codes. By strategically converting theoretical RUS spectra into their modulated fingerprints and using them as a dataset train neural network models, we obtained that successfully predicted both test an isotropic material measured steel spectrum with up 9.6% missing resonances. further...
Abstract Zeolites with encapsulated transition metal species are extensively applied in the chemical industry as heterogenous catalysts for favorable kinetic pathways. To elucidate energetic insights into formation of subnano‐sized molybdenum trioxide (MoO 3 ) encapsulated/confined zeolite Y (FAU) from constituent oxides, we performed a systematic experimental thermodynamic study using high‐temperature oxide melt solution calorimetry major tool. Specifically, enthalpy each MoO /FAU is less...
Cobalt(II) fluoride (α-CoF2) has potential for application as a high-performance electrode material in lithium-ion batteries. α-CoF2 is synthesized by the thermal heat treatment of CoF2·4H2O, commonly an aqueous environment. There exists disagreement literature upon mechanism, intermediate hydration states, and temperatures reaction. Here, we resolve this discontinuity using integrated structural, thermogravimetric, calorimetric analyses to elucidate dehydration pathway CoF2·4H2O both ex...
Abstract Cerium‐doped yttrium aluminum garnets (Y 3‐ x Ce Al 5 O 12 , Ce:YAGs) are promising yellow light‐emitting components of solid‐state white diodes. Although there have been numerous studies examining the effects concentrations on luminescent properties Y 12, impacts dopant elastic and thermodynamic not well understood. In this work, we used resonant ultrasound spectroscopy (RUS) to determine doping (0.025, 0.1, 1 at. %) . The moduli calculated via Voigt–Reuss–Hill (VRH) method...
MXenes are ultra-thin two-dimensional layered early-transition metal carbides and nitrides with potential applications in various emerging technologies, such as energy storage, water purification, catalysis. synthesized from the parent MAX phase different etching agents (HF or fluoride salts a strong acid) by selectively removing more weakly bound crystalline layer of Al Ga replaced surface groups (-O, -F, -OH, etc.). Ti3C2Tx MXene CoF2/HCl has heterogeneity due to intercalated Al3+ Co2+...
Zeolites with encapsulated transition metal species are extensively applied in the chemical industry as heterogenous catalysts for favorable kinetic pathways. To elucidate energetic insights into formation of subnano-sized molybdenum trioxide (MoO3) encapsulated/confined zeolite Y (FAU) from constituent oxides, we performed a systematic experimental thermodynamic study using high temperature oxide melt solution calorimetry major tool. Specifically, enthalpy each MoO3/FAU is less endothermic...
Zeolites with encapsulated transition metal species are extensively applied in the chemical industry as heterogenous catalysts for favorable kinetic pathways. To elucidate energetic insights into formation of subnano-sized molybdenum trioxide (MoO) encapsulated/confined zeolite Y (FAU) from constituent oxides, we performed a systematic experimental thermodynamic study using high temperature oxide melt solution calorimetry major tool. Specifically, enthalpy each MoO/FAU is less endothermic...