Preparation of THPC-generated silver, platinum, and palladium nanoparticles and their use in the synthesis of Ag, Pt, Pd, and Pt/Ag nanoshells

Abstract

Seed nanoparticles of Ag, Pt, and Pd (typically ≤4 nm in diameter) were synthesized using tetrakis(hydroxymethyl)phosphonium chloride (THPC) as reducing agent and utilized to prepare Ag, Pt, and Pd nanoshells, as well as hybrid Pt/Ag nanoshells, on silica cores.