A5045839798- Membrane Separation Technologies
- Geochemistry and Elemental Analysis
- Multiferroics and related materials
- Membrane-based Ion Separation Techniques
- Solar Thermal and Photovoltaic Systems
- Solar-Powered Water Purification Methods
- Paleontology and Stratigraphy of Fossils
- Iron oxide chemistry and applications
- Mercury impact and mitigation studies
- Electrostatics and Colloid Interactions
Washington University in St. Louis
2019-2024
To alleviate the scarcity of clean water, solar steam generation, which utilizes green and abundant resources Earth, has attracted considerable attention been recognized as a sustainable technology to purify seawater wastewater.
Because of its favorable thermodynamics and fast kinetics, heterogeneous solid nucleation on membranes triggers early-stage mineral scaling. Iron (hydr)oxide, a typical membrane scale, initially forms as nanoparticles that interact with surface functional groups membranes, but these nanoscale phenomena are difficult to observe in real time. In this study, we utilized situ grazing incidence small angle X-ray scattering ex atomic force microscopy examine the iron (hydr)oxide commonly used...
Natural manganese (Mn) oxide coatings, resulting from the heterogeneous nucleation on foreign substances, have garnered interest based their importance in reaction with organic substances and environmental systems. However, of natural Mn coatings still remains elusive. Here, via fast photochemical oxidation Mn2+(aq), we show that Mn(IV) nuclei form aggregate quartz three distinct successive stages: (i) a nanocrystalline film unaligned grain forms, (ii) nanoislands develop film, (iii)...
Manganese (Mn) oxides are abundant in aquatic and terrestrial environments, where they play significant roles redox cycling biological metabolisms. We recently observed that Mn were homogeneously formed during the abiotic oxidation of Mn2+(aq) to Mn(IV) by O2•– via nitrate photolysis, at a rate comparable biotic oxide formation. On other hand, for heterogeneous formation oxides, presence substrate can alter required thermodynamic driving force, which may affect their crystalline phases...