Silver catalysts nanotubes

Supported versions of such silver-catalyzed, three-component couplings have been recently reported. Silver oxide on multiwall carbon nanotubes or on alumina,102 as well as silver-doped zeolites,103 proved to be efficient and reusable catalysts for such coupling reactions. In the former, water was used as solvent, while in the latter, no solvent was required, making it a truly green process. 

Stable bimetallic nanoparticles were synthesized with a total yield by a microwave assisted eco-friendly method. Both UV-VIS spectroscopy and microscopy data confirmed the formation of bimetalUc nanostractures, in form of core-shell or alloy. Catalytic tests showed results in good agreement with literature data, with a decreased activity for higher silver content. Studies on applying these nanoparticles for the preparation of catalysts supported on polymer and nanotube are underway. Moreover, this synthesis technique will be extended to the preparation of other bimetallic nanoclusters. 

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