Photo-chemical reactions on plasmonic nanostructures

Event Date: 

Thursday, May 14, 2015 - 11:15am

Event Location: 

  • ES2 1519

Suljo Linic, Chemical Engineering, University of Michigan

Plasmonic metal nanoparticles are characterized by their strong interactions with electromagnetic radiation (for example, photons) through an excitation of localized surface plasmon resonance (LSPR). At resonant frequencies this enhanced light– matter interaction results in elevated electric fields at the surface of the nanoparticles. I will discuss a few examples of the chemical consequences of the enhanced light-matter interaction at the surface of plasmonic nanoparticles. I will show that composite photo-catalysts combing plasmonic metallic nanoparticles of noble metals and semiconductor nanostructures exhibit improved photo-chemical activity compared to conventional photo-catalytic materials. I will also show that plasmonic silver nanoparticles, optically excited with low intensity visible light, exhibit direct photo-catalytic activity. I will discuss underlying mechanisms associated with these phenomena. Finally, I will show how this new family of photo-catalysts could prove useful for many heterogeneous catalytic processes that cannot be activated using conventional thermal processes on metals or photo-catalytic processes on semiconductors. I will show an example of such a process.

Suljo Linic obtained his PhD degree, specializing in surface and colloidal chemistry and heterogeneous catalysis, at the University of Delaware in 2003 under the supervision of Prof. Mark Barteau after receiving his BS degree in Physics with minors in Mathematics and Chemistry from West Chester University in West Chester (PA). He was a Max Planck postdoctoral fellow with Prof. Dr. Matthias Scheffler at the Fritz Haber Institute of Max Planck Society in Berlin (Germany), working on first principles studies of surface chemistry. He started his independent faculty career in 2004 at the Department of Chemical Engineering at the University of Michigan in Ann Arbor where he is currently Professor and the Class of 1983 Faculty Scholar of chemical engineering. Prof. Linic’s research has been recognized through multiple awards including the 2014 ACS (American Chemical Society) Catalysis Lectureship for the Advancement of Catalytic Science, awarded annually by the ACS Catalysis journal and Catalysis Science and Technology Division of ACS, the 2011 Nanoscale Science and Engineering Forum Young Investigator Award, awarded by American Institute of Chemical Engineers, the 2009 ACS Unilever Award awarded by the Colloids and Surface Science Division of ACS, the 2009 Camille Dreyfus Teacher-Scholar Award awarded by the Dreyfus Foundation, the 2008 DuPont Young Professor Award, and a 2006 NSF Career Award. Prof. Linic has presented more than 100 invited and keynote lectures and published more than 50 peer reviewed articles in leading journals in the fields of general science, Physics, Chemistry, and Chemical Engineering. He is currently an associate editor for ACS Catalysis