In has been recognized for some time that strong interaction of electromagnetic fields (e.g., light) with plasmonic nanomaterials offers opportunities in various technologies that take advantage of photophysical processes amplified by this light-matter interaction. More recently, we have showed that in addition to photophysical processes, optically excited plasmonic nanoparticles can also activate chemical transformations directly on their surfaces. This potentially offers a number of opportunities in the field of selective chemical synthesis. I will discuss our findings 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. We propose that 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. C. Boerigter, U. Aslam, S. Linic, ACS Nano, 10 (6), 6108, 2016. C. Boerigter, R. Campana, M. Morabito, S. Linic*, Evidence and implications of direct charge excitation as the dominant mechanism in plasmon-mediated photocatalysis, Nature Communication, 7, 2016. S Linic, U Aslam, C Boerigter, M Morabito, Nature Materials, 14 (6), 567-576, 2015 D. B. Ingram, S. Linic, JACS, 133, 5202, 2011 Suljo Linic, Phillip Christopher and David B., Nature Materials, 10, 911, 2011. Ingram P. Christopher, H. Xin, S. Linic, Nature Chemistry, 3, 467, 2011. P. Christopher, H. Xin, M. Andiappan, S. Linic, Nature Materials, 11, 1044, 2012. Andiappan, S. Linic Science, 339, 1590, 2013

Catalytic reactions on optically excited plasmonic metal nanoparticles

253rd National Meeting (2017)

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