Discovery of the Face-Centered Cubic Ruthenium Nanoparticles: Facile Size-Controlled Synthesis Using the Chemical Reduction Method

Abstract

AbstractThe author reports the first discovery of pure face-centered cubic (fcc) Ru nanoparticles. Although the fcc structure does not exist in the bulk Ru phase diagram, fcc Ru was obtained at room temperature (RT) because of the nanosize effect. The author succeeded in separately synthesizing uniformly sized nanoparticles of both fcc and hcp Ru having a diameter from 2 to 5.5 nm by simple chemical reduction methods with different metal precursors. Both of the prepared fcc and hcp nanoparticles were supported on γ-Al2O3, and their catalytic activity in CO oxidation was investigated. The catalytic activity of the Ru nanoparticles in CO oxidation depends on their structure and size.KeywordsMetal PrecursorChemical Reduction MethodTriethylene GlycolTransition Metal SeriesAtomic Number IncreaseThese keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.