Brookhaven National Laboratory
P.O. Box 5000
Upton, NY 11973-5000
Phone: (631) 344-4412
FAX: (631) 344-5815
Surface chemistry and chemical
physics, catalysis and photocatalysis:
photoinduced surface chemistry; molecular and electron dynamics at nanoparticle surfaces; molecule-surface interactions and scattering; surface structure and diffraction; self-assembly; organic-semiconductor interfaces; oxide surface chemistry.
Our research is aimed at understanding the physics that drives chemical processes at the gas-solid interface. The work is motivated by a desire to develop a fundamental understanding of the dynamics of surface reactions that is relevant to the rational design of future catalytic and photocatalytic materials. Toward this end we are working to address the challenge of understanding the details-reaction mechanisms, transition states, molecular interactions, and energy transfer timescales-that determine the efficiency, selectivity and structure-function relationships of surface chemistry.
We are currently investigating dynamical chemical processes in two distinct programs:
Our Chemical Physics program focuses on molecule-surface energy transfer dynamics and using photoinitiated diabatic processes to "clock" surface chemical reactions. This research is a component of the Chemical Physics program in the Chemistry Division at Brookhaven and involves collaborations with Mike White (White Surface Dynamics Group), Ping Liu (Catalysis on the Nanoscale), and Alex Harris (Ultrafast Surface Dynamics).
Our Chemical Imaging program focuses on enhancing our ability to understand atomic-scale mechanisms of nanophotocatalytic reactions through experiments combining spectroscopic chemical specificity, sub-nanometer spatial resolution, and sub-picosecond temporal resolution. This research is a joint effort with Interface Science and Catalysis Group at the Proximal Probes Facility in Brookhaven's Center for Functional Nanomaterials