Controlled nanometre-sized metal species have attracted great attention in the field of catalysis because of their unique chemical and physical properties. 1 Particles hosted in porous supports are mainly prepared by the decomposition of organometallic compounds 2 or the reduction of metallic salts. 3 In the latter case, impregnation methods are limited by the tendency of the metal to agglomerate on the external surface. In parallel, the control of the size of metallic ...
