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The effect of negatively charged metallic nanocatalysts on their reactions with alkyl radicals

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Stored electrons on Au and Ag nanoparticles (NPs) have been found to catalyze various reduction processes initiated by ionizing irradiation or light illumination in which the NPs act as “nano-electrodes”. In the present study, we explored the effect of charging colloidal gold and silver NPs on their reaction with methyl radicals, ┬ĚCH3. The results show that charging the colloidal metal NPs by excess of electrons, (NP)n−, affected their reaction mechanism with methyl radicals and resulted in different product composition in comparison to the analogous reactions with uncharged particles. These results should be considered in photo(electro)catalytic processes when alkyl radicals are formed near the catalyst surface.
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Keywords: Nanoparticles; electrocatalysis; irradiation; nanoelectrodes; radicals

Document Type: Research Article

Affiliations: 1: Chemistry Department, Nuclear Research Centre Negev, Beer-Sheva, Israel;; 2: Chemical Sciences Department and the Schlesinger Family Center for Compact Accelerators, Radiation Sources and Applications, Ariel University, Ariel, Israel

Publication date: July 3, 2018

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