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Title: A novel route to size and shape controlled synthesis of DMSO capped ruthenium dioxide nanoparticles
Authors: Borah, Geetika
Sharma, Ponchami
Keywords: Catalysts;Nanomaterials;Oxides;Ruthenium dioxide;X-ray diffraction
Issue Date: Jan-2011
Publisher: NISCAIR-CSIR, India
Abstract: Ruthenium dioxide nanoparticles (RuO2) with an average particle size of 54-95 nm are readily synthesized from RuCl3.xH2O via the formation of ruthenium acetylacetone. The particle size of RuO2 nanoparticle increases with increase in calcination time at 800 °C. The ruthenium dioxide nanoparticles have also been capped with DMSO to make them soluble in common organic solvents. These synthesized nanocrystallites have been characterized by FTIR, UV-vis, SEM-EDX, 1H NMR, magnetic measurements and XRD techniques. The XRD pattern demonstrates the crystalline nature of these nanoparticles. The downfield shift of νS=O frequency (∆ν=74 cm-1) in FTIR, as well as SEM-EDX and 1H NMR spectra of the capped RuO2 nanoparticle confirm the capping with DMSO. UV-vis analysis shows that the absorption peak is blue-shifted with decrease of particle size. Magnetic measurements show that these nano oxides have nearly zero magnetic remanence, a linear response of magnetization and finally reach saturation magnetization at low external field in the range 2625-2650 Oe.
Page(s): 41-45
ISSN: 0975-0975(Online); 0376-4710(Print)
Appears in Collections:IJC-A Vol.50A(01) [January 2011]

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