A5044353435- Advanced Photocatalysis Techniques
- Extraction and Separation Processes
- Advanced oxidation water treatment
- Geochemistry and Elemental Analysis
- Metal-Organic Frameworks: Synthesis and Applications
- Coal and Its By-products
- Electrochemical Analysis and Applications
- Mercury impact and mitigation studies
- Recycling and Waste Management Techniques
- Clay minerals and soil interactions
- Per- and polyfluoroalkyl substances research
- Advanced Nanomaterials in Catalysis
- Adsorption and biosorption for pollutant removal
- TiO2 Photocatalysis and Solar Cells
- Pharmaceutical and Antibiotic Environmental Impacts
- Graphene research and applications
- Luminescence and Fluorescent Materials
- Selenium in Biological Systems
- Phosphorus and nutrient management
- Electrocatalysts for Energy Conversion
- Heavy metals in environment
- Acute Kidney Injury Research
- Geological and Geochemical Analysis
- Radioactive element chemistry and processing
- Arsenic contamination and mitigation
Georgia Institute of Technology
2023-2024
Texas A&M University
2019-2023
Mitchell Institute
2023
Increasing demand for food due to rapid population growth has exerted unprecedented pressure on the global agricultural industry. Agrochemicals are widely used ensure productivity, leading prevalence of legacy and emerging chemicals in environment, most which toxic persistent. Metal–organic frameworks (MOFs) as a group novel photocatalytic materials with ultrahigh porosity tunability have demonstrated high potential efficient removal these recalcitrant pollutants. This critical review aims...
The high porosity and tunability of metal–organic frameworks (MOFs) have made them an appealing group materials for environmental applications. However, their potential in the photocatalytic degradation per- polyfluoroalkyl substances (PFAS) has been rarely investigated. Hereby, we demonstrate that over 98.9% perfluorooctanoic acid (PFOA) was degraded by MIL-125-NH2, a titanium-based MOF, 24 h under Hg-lamp irradiation. MOF maintained its structural integrity after three cycles, as indicated...
Activation of peroxydisulfate (PDS, S2O82–) via various catalysts to degrade pollutants in water has been extensively investigated. However, catalyst-free activation PDS by visible light largely ignored. This paper reports effective without any additional catalyst, leading the degradation a wide range organic compounds high environmental and human health concerns. Importantly, formation reactive species is distinctively different system with [e.g., atrazine (ATZ)]. In addition SO4•–...
Many advanced oxidation processes (AOPs) use Fenton-like reactions to degrade organic pollutants by activating peroxymonosulfate (HSO
Due to the growing demands of rare earth elements (REEs) and vulnerability REEs potential supply disruption, there have been increasing interests in recovering from waste streams such as coal fly ash (CFA). Meanwhile, CFA a large industrial stream United States (U.S.) poses significant environmental economic burdens. Recovery is promising solution REE scarcity issue also brings opportunities for management. This study demonstrates green system recovery Class F C that consists three modules:...
Metal-organic frameworks (MOFs) are porous materials consisting of metal nodes and organic linkers that organize themselves into rigid crystal structures. The inclusion redox-sensitive metals light-harvesting in the structure could make MOFs powerful photocatalysts to break down recalcitrant pollutants. However, broad applications environmental settings require overcoming several technical hurdles. In this review, we provide key insights enhancement stability photocatalytic activity...
While the activation mechanisms of peroxymonosulfate (PMS) by various homogeneous and heterogeneous catalysts have been reported, chemistry PMS in a catalyst-free system its interactions with background oxyanions are still poorly understood. This paper demonstrated two prevalent (phosphate carbonate) revealed for enhanced atrazine (ATZ) degradation at neutral pH. Both activated to produce sulfate radical (SO4•–), which reacts ATZ rapidly, but phosphate exhibited stronger effect than...
Global efforts to build a net-zero economy and the irreplaceable roles of rare-earth elements (REEs) in low-carbon technologies urge understanding REE occurrence natural deposits, discovery alternative resources, development green extraction technologies. Advancement these directions requires comprehensive knowledge on geochemical behaviors REEs presence naturally prevalent organic ligands, yet much remains unknown about ligand-mediated mobilization/fractionation related mechanisms. Herein,...
The advancements in high-tech products and pursuit of renewable energy demand a massive continuously growing supply rare earth elements (REE). However, REE production from mining is heavily restricted by technoeconomic limitations global geopolitical tensions. Municipal solid waste incineration ash (MSWIA) has been recently recognized as potential alternative for recovery. This study applies optimizes green modular treatment system using organic ligands effective recovery concentration MSWIA...
A survey study of Se speciation in coal fly ash samples representative source and combustion conditions.
The prevalence of per- and polyfluoroalkyl substances (PFAS) in ground surface water poses serious threats to public health. However, an effective destructive technology for PFAS remains elusive. Herein, we report the results perfluorooctanoic acid (PFOA) degradation by a high temperature transformed, photocatalytic titanium-based metal-organic framework (MOF), MIL-177-HT, with infinite one-dimensional (1D) channels. MIL-177-HT removed 83% PFOA within 24 hours 32% photo-induced...