Greenlee

 

Dr. Lauren Greenlee

Synthesis, characterization, and testing of non-precious metal and metal oxide nanocatalsyts for applications in the following: water treatment, electrochemical energy conversion, and agriculture.

Water Treatment:   Dr. Greenlee’s lab synthesizes iron-based bimetallic nanoparticles and nanoparticle-carbon composite materials for reactive degradation of water contaminants. Reactive nanoparticles can be used to reductively degrade halogenated organics, oxidize pharmaceuticals and pesticides, and change the oxidation state of heavy metals. Both reaction and adsorption mechanisms can occur during contaminant removal.

Energy:   Dr. Greenlee’s lab is interested in improving the performance of non-precious metal oxide and hydroxide nanocatalysts for electrochemical reactions such as the oxygen evolution reaction. The group focuses on alkaline electrochemistry and work to understand how nanocatalyst synthesis parameters can be controlled to obtain specific catalyst composition, phase, and morphology. They evaluate catalysts to understand correlations between catalyst properties and performan

Agriculture:   Dr. Greenlee’s research group investigates engineering solutions to challenges in agriculture related to nitrogen and phosphorus nutrient cycles. They currently are developing catalyst materials for the electrochemical reduction of nitrogen to ammonia and are interested in improving water treatment and nutrient recycling through electrochemistry.

 

Dr. Donald Roper

 

Dr. Donald K Roper

Electromagnetic Interactions with nano-scale architectures for applications in the following: healthcare, energy, and the environment

 The NanoBio Photonics group under the direction of Prof. D. Keith Roper studies near- and far-field features of electromagnetic-coupled surface waves, such as plasmons, and low-frequency modes, like molecular vibrations and optical phonons, on nanoscale structures. The group is particularly interested in photon-plasmon coupling on films, nanoparticles, and both random and periodic assemblies of nanparticles, including metamaterials. Optoplasmonic interactions are examined to distinguish effects of near- and far-field radiative interactions and to design nanoscale architectures with enhanced performance in biosensing, solar energy, optoelectronics, microthermalfluidics, spectroscopy, diagnostics and therapeutics. Advanced techniques are used together with novel adaptations of engineering, physics, and chemistry methods to fabricate architectures that are envisioned by modeling. A variety of complementary analytical techniques are then used to compare experimental data from fabricated structures with predictions from theoretical models. Nanoscale architectures that result from this rational process exhibit photon-plasmon coupling that offers significant improvements to solar photovoltaics, microscopy, spectroscopy and sensing of biological entities.