Influence of the Au/Ag ratio on the catalytic activity of dendrimer-encapsulated bimetallic nanoparticles in microreactors

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Abstract

Dendrimer-encapsulated Au/Ag alloy nanoparticles (Au/Ag DENs) were covalently attached to a monolayer-functionalized inner surface of glass microreactors. The influence of the bimetallic alloy structure and of the different metal ratios was investigated for the reduction of 4-nitrophenol using NaBH4. TheAu/Ag—dendrimer nanocomposite with a 1:1 Au/Ag metal ratio showed the highest activity as compared to othermetal ratios and to pure Ag and Au. The dendrimer template exerted a stabilizing effect for six consecutive days of use with almost no decrease in conversion. This strategy enables the screening and investigation of a variety of bimetallic nanocatalysts in continuous-flow microreactors.
Original languageUndefined
Pages (from-to)228-233
Number of pages6
JournalJournal of flow chemistry
Volume5
Issue number4
DOIs
Publication statusPublished - 2015

Keywords

  • METIS-314381
  • IR-99863

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