The invention relates to colloidal dispersions comprising nano-sized precious metal particles (e.g. platinum or platinum alloy particles) and at least one ionomer component having acidic groups. The method for its manufacturing is based on a neutralization...

Colloid with precious metal particles having surface oxidation-insensitive sulfonic or phosphonic acid groups derived from a coordinate polymer selected from sulfonated (partially) fluorinated polystyrene or alkylene/styrene copolymer, perfluorinated alkyl...

The present invention provides nanoparticles which contain noble metals alone or noble metals in combination with base metals. The nanoparticles are characterised in that they are embedded in an aqueous solution of a temporary stabiliser based on a polysac...