@article{oai:soar-ir.repo.nii.ac.jp:00013299, author = {Gopiraman, Mayakrishnan and Bang, Hyunsik and Babu, Sundaram Ganesh and Wei, Kai and Karvembu, Ramasamy and Kim, Ick Soo}, issue = {7}, journal = {CATALYSIS SCIENCE & TECHNOLOGY}, month = {}, note = {Ultrafine ruthenium oxide nanoparticles (RuO2NPs) with an average diameter of 1.3 nm were anchored on graphene nanoplatelets (GNPs) using a Ru(acac)3 precursor by a very simple dry synthesis method. The resultant material (GNPs–RuO2NPs) was used as a heterogeneous catalyst for the N-oxidation of tertiary amines for the first time. The transmission electron microscopy (TEM) images of the GNPs–RuO2NPs showed the excellent attachment of RuO2NPs on GNPs. The loading of Ru in GNPs–RuO2NPs was 2.68 wt%, as confirmed by scanning electron microscope-energy dispersive spectroscopy (SEM-EDS). The X-ray photoelectron spectrum (XPS) and the X-ray diffraction pattern (XRD) of GNPs–RuO2NPs revealed that the chemical state of Ru on GNPs was +4. After the optimization of reaction conditions for N-oxidation of triethylamine, the scope of the reaction was extended to various aliphatic, alicyclic and aromatic tertiary amines. The GNPs–RuO2NPs showed excellent catalytic activity in terms of yields even at a very low amount of Ru catalyst (0.13 mol%). The GNPs–RuO2NPs was heterogeneous in nature, chemically as well as physically, very stable and could be reused up to 5 times., Article, CATALYSIS SCIENCE & TECHNOLOGY. 4(7):2099-2106 (2014)}, pages = {2099--2106}, title = {Catalytic N-oxidation of tertiary amines on RuO(2)NPs anchored graphene nanoplatelets}, volume = {4}, year = {2014} }