Pauling Fellowship Alumni
Grant Johnson — 2009 Pauling Fellow
Dr. Grant Johnson is a scientist in PNNL's Fundamental & Computational Science Directorate. His research is focused within the Separations, Detection, and Analysis program with Laboratory Fellows Dr. Julia Laskin and Dr. Yuehe Lin.
Dr. Johnson is developing unique capabilities for the preparation and high-throughput characterization of bi- and tri-metallic nanoparticles (NPs) of precise composition. His research is employing oxygen reduction and reduction of 4-nitrophenol as model reactions to investigate how the size, shape, elemental composition and support-interaction of alloy nanoparticles on surfaces influences their catalytic behavior. Utilizing these capabilities and fundamental insights into structure-reactivity relationships will allow the design of improved alloy nanoparticles for a broad range of applications in catalysis and energy storage.
Separating the Catalysts from the Chaff
New soft landing instrument prepares pure, undamaged samples for analysis
Ligand Stripping Leads to Unique Surface Catalyst
Novel approach uses ion-molecule collisions and deposition to create sought-after material
U.S., Taiwan Team Ties Down Vanadium Catalyst in Thin Layers
Soft landing metal-based molecules and acids on a surface creates active, easy-to-separate catalyst
Getting Positive Results with Negative Ions
Scientists show new detector's abilities, including visualizing a charged particle beam
Employing Ions Allows Scientists to Precisely Design Innovative Materials
Invited review article covers basic processes and applications of ion soft-landing
Soft Landing and Particle Coverage Key to Keeping or Losing Charge on Surfaces
New results may aid rational design of materials for sustainable energy
Preparing a Homogenous Haystack
Scientists show how to prepare identical particles for analysis, eliminating the hunt
Xiao Lin — 2009 Pauling Fellow
Dr. Xiao Lin is now a Professor within the School of Physics at the University of Chinese Academy of Sciences.