 | |
|
| ||||||
ronald l. grimmPh.D. 2005, Caltech B.S. 1999, Case Western Reserve
Phone: 626-395-3964
Noyes 217 Ron investigates routes to modify silicon surfaces for improved photoelectrichemical performance with both high stability to oxidation and high catalytic activity. Silicon semiconductors play an important role in the design of the ideal photoelectrichemical cell for water splitting and hydrogen production. However, silicon suffers from oxidative attack leading to the formation of surface states that trap photogenerated carriers leading to decreased performance. The Lewis group employs a two-step chloronation / alkylation procedure to functionalize silicon surfaces with methyl groups that show excellent oxidative stability. Unfortunately, the methylation chemistry somewhat degrades the photoelectrichemical performance and efficiency of silicon, so new organic species are necessary to combine the stability of methylation with new functionalities that improve performance. Ron researches methods to extend the synthetic tools with new organic functionalities. Surface techniques including XPS and IR characterize the surface stability and the performance in one-electron redox couples (ferrocene, cobaltocene, etc.) demonstrates the viability of new surfaces for splitting water with sunlight. Publications
Comparison of the Photoelectrochemical Behavior of H‐Terminated and Methyl-Terminated Si(111) Surfaces in Contact with a Series of One-Electron, Outer-Sphere Redox Couples in CH3CN
820 mV open-circuit voltages from Cu2O/CH3CN junctions
Hygroscopic Growth and Deliquescence of NaCl Nanoparticles Mixed with Surfactant SDS
D2O Water Interaction with Textured Carboxylic Acid-Terminated Monolayer Surfaces Characterized by Temperature-Programmed Desorption and Molecular Dynamics
Evaporation and Discharge Dynamics of Highly Charged Multicomponent Droplets Generated by Electrospray Ionization
Experimental and Theoretical Characterization of Adsorbed Water on Self-Assembled Monolayers: Understanding the Interaction of Water with Atmospherically Relevant Surfaces
D2O water interaction with mixed alkane thiol monolayers of tuned hydrophobic and hydrophilic character
Surface Structure of KIO3 Grown by Heterogeneous Reaction of Ozone with KI (001)
Probing interfacial chemistry of single droplets with field-induced droplet ionization mass spectrometry: Physical adsorption of polycyclic aromatic hydrocarbons and ozonolysis of oleic acid and related compounds
Dynamics of field-induced droplet ionization: Time-resolved studies of distortion, jetting, and progeny formation from charged and neutral methanol droplets exposed to strong electric fields
Complexation of gas-phase metal ions with furan: Experimental and quantum chemical binding energies
Field-induced droplet ionization mass spectrometry
Hypervelocity microparticle impact studies using a novel cosmic dust mass spectrometer
Evaporation and discharge dynamics of highly charged droplets of heptane, octane, and p-xylene generated by electrospray ionization |
|
|
|
|||||||||||||||
