Publications by authors named "Thomas B Sobyra"
Probing the Pseudocapacitive Charge Storage in TiC MXene Thin Films with X-ray Reflectivity.
ACS Appl Mater Interfaces
September 2021
Article Synopsis
- MXenes are two-dimensional materials promising for energy storage and other applications like water purification due to their effective charge/discharge capabilities.
- Ion intercalation, which is the process of ions inserting themselves between layers of the material, is crucial for the functionality of MXenes and has been studied using X-ray reflectivity techniques.
- Experiments showed that applying negative potential causes changes in the structure of TiC MXene, including a contraction of interlayer spacing and variations in electron density, indicating the involvement of Li ions and water, with notable behaviors observed at specific voltage ranges.
Gas-liquid scattering experiments are used to investigate the oxidation-reduction reaction NO(g) + 2Br(aq) → Br(g) + NO(aq) + NO(aq), a model for the nighttime absorption of NO into aerosol droplets containing halide ions. The detection of evaporating Br molecules provides our first observation of a gaseous reaction product generated by a water microjet in vacuum. NO molecules are directed at a 35 μm diameter jet of 6 or 8 LiBr in water at 263 or 240 K, followed by detection of both unreacted NO and product Br molecules by velocity-resolved mass spectrometry.
View Article and Find Full Text PDFGas-Microjet Reactive Scattering: Collisions of HCl and DCl with Cool Salty Water.
J Phys Chem Lett
February 2016
Liquid microjets provide a powerful means to investigate reactions of gases with salty water in vacuum while minimizing gas-vapor collisions. We use this technique to explore the fate of gaseous HCl and DCl molecules impinging on 8 molal LiCl and LiBr solutions at 238 K. The experiments reveal that HCl or DCl evaporate infrequently if they become thermally accommodated at the surface of either solution.
View Article and Find Full Text PDFGas-liquid scattering experiments were employed to measure the entry and dissociation of the acidic gas DCl into salty glycerol coated with dodecyl sulfate ions (DS(-) = CH3(CH2)11OSO3(-)). Five sets of salty solutions were examined: 0.25 and 0.
View Article and Find Full Text PDFArticle Synopsis
- Molecular switches play a crucial role in both natural and artificial processes, and this study introduces a new electrochemical platform that uses a proton carrier to control a catalyst's activity.
- By integrating an alkyl phosphate into a lipid layer of a hybrid bilayer membrane, proton transport is effectively regulated for a copper-based catalyst involved in the reduction of molecular oxygen.
- This innovative setup not only sheds light on the oxygen reduction reaction but also enhances our understanding of proton-coupled electron transfer mechanisms.