A SUBSTRATE SURFACE STRUCTURED WITH THERMALLY STABLE METAL ALLOY NANOPARTICLES, A METHOD FOR PREPARING THE SAME AND USES THEREOF, IN PARTICULAR AS A CATALYST

摘要

The invention relates to a method for preparing a substrate surface structured with thermally stable metal alloy nanoparticles, which method comprises - providing a micellar solution of amphiphilic molecules such as organic diblock or multiblock copolymers in a suitable solvent; - loading the micelles of said micellar solution with metal ions of a first metal salt; - loading the micelles of said micellar solution with metal ions of at least one second metal salt; - depositing the metal ion-loaded micellar solution onto a substrate surface to form a (polymer) film comprising an ordered array of (polymer) domains; co-reducing the metal ions contained in the deposited domains of the (polymer) film by means of a plasma treatment to form an ordered array of nanoparticles consisting of an alloy of the metals used for loading the micelles on the substrate surface. The invention also provides a nanostructured substrate surface obtainable by said method as well as the use of said nanostructured substrate surface as a catalyst.