Ruthenium Nanoparticles Immobilized on Nano-silica Functionalized with Triazine Dendrimer (Runp-nSTDP): An Efficient, Selective, and Reusable Catalyst System for the Oxidation of Alcohols

The present study describes the synthesis, characterization, and catalytic activity of ruthenium nanoparticles stabilized with nano-silica triazine dendrimer Runp-nSTDP. To do this, silica nanoparticles were functionalized by triazine dendrimer and finally loaded with ruthenium nanoparticles. Finally, their catalytic activity was investigated in the oxidation reaction of alcohols. However, the preparation of dendrimer containing ruthenium nanoparticles, the ruthenium nanoparticles were produced with reducing of RuCl3.H2O by NaBH4. The prepared catalyst was characterized by FT-IR, TGA, elemental analysis, UV–vis, FE-SEM, SEM-EDX, TGA, TEM, HR-TEM, XPS and ICP-OES techniques. The catalyst was used for the oxidation of various types of alcohols to carbonyl compounds. The present method offers advantages of excellent yields, short reaction times and simple work-up. Also, the catalyst can be easily recycled and reused several times, which makes this method attractive, economic and environmentally benign.