"Growing Model Catalysts Through the Tailored Design of Shaped Bimetallic Nanoparticles", Prof. Michelle Personick, Wesleyan University
Tuesday, October 22, 2019 at 3:30pm to 4:30pm
Building 66, 66-110
25 AMES ST, Cambridge, MA 02139
The Materials Science and Engineering Seminar Series presents Prof. Michelle Personick from Wesleyan University who will present her talk, "Growing Model Catalysts Through the Tailored Design of Shaped Bimetallic Nanoparticles". Refreshments will be served. Please join us!
Growing Model Catalysts Through the Tailored Design of Shaped Bimetallic Nanoparticles
The design of bimetallic nanoparticles whose surface is composed of a reactive catalytic metal diluted in a less catalytically active metal is a promising route to the generation of highly selective heterogeneous catalysts. In addition, for catalytic transformations that are structure sensitive, the atomic plane exposed at the surface of a metal nanocatalyst can affect the orientation and binding strength of adsorbed reactants, thereby tuning activity and product selectivity. Experimentally modeling the cooperative effects of the minority and majority metals over a range of surface structures under realistic catalytic conditions requires the ability to both (1) reduce small amounts of a minority metal at the nanoparticle surface and (2) generate nanoparticles bound by a particular surface facet. Using a range of techniques under development in our research group, including sequential co-reduction, in-situ underpotential deposition, and post-synthetic underpotential deposition, we are able to generate a library of systematically tuned model nanomaterials.