Icosahedral gold–platinum alloy nanocrystals in hollow silica: a highly active and stable catalyst for Ullmann reactions†
Abstract
Icosahedral Au–Pt alloy nanocrystals are prepared in porous hollow silica nanospheres via a hydrothermal method without using capping agents. These nanoparticles with unique shape and structure exhibit excellent catalytic activity and stability in Ullmann reactions.