Ir(0) and Pt(0) nanoparticle-triazine dendrimer composites

Abstract

The formation of M@dendrimer composites (M = platinum, iridium) is reported, at room temperature, by mechanical milling of commercially available metallic precursors, sodium borohydride and small generation triazine-based dendrimers. After impurity removal, the composites are characterized by TEM showing spherical, worm-like or agglomerated nanoparticles depending upon the macromolecule stabilizer used. As a test of the surface activity of the metallic nanoparticles, the study of activity of the composites on the catalytic reduction of 4-nitrophenol show differences for each metal employed and suggest that surface of the NPs is not passivated by the presence of the stabilizer dendrimers.

Graphical Abstract

Keywords:

• Noble metal nanoparticles
• 3 generation dendrimers
• protect vs agglomeration

Acknowledgments

Fermín Ramírez-Crescencio acknowledges CONACyT (227152-332714). R. Redón would like to thank PAPIIT project (IN114217) for their financial support.

Disclosure statement

No potential conflict of interest was reported by the authors.