Synthesis and properties of Cu-Pd hydrosol: Hydrogen reduction of Cu2+ ions catalyzed by palladium nanoparticlesстатья
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Дата последнего поиска статьи во внешних источниках: 23 ноября 2017 г.
Аннотация:A method has been developed for obtaining Cu-Pd hydrosols via catalytic reduction of copper ions by hydrogen on seed palladium nanoparticles 2.5 +/- 0.3 nm in size. It has been found that reduction of Cu2+ to metal proceeds stage-by-stage through the formation of an intermediate Cu+ ion. Cu-Pd hydrosol remains stable with respect to sedimentation and aggregation for several weeks. The hydrodynamic size of Cu-Pd nanoparticles increases proportionally to the copper content in particles. It has been shown that this is due to an acidification of the solution as a result of H+ ions formation via the reaction of reduction of Cu2+ ions by hydrogen.