Journal
JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY
Volume 16, Issue 6, Pages 6139-6147Publisher
AMER SCIENTIFIC PUBLISHERS
DOI: 10.1166/jnn.2016.10862
Keywords
Ruthenium Nanoparticles; Hydrothermal Synthesis; Redox Properties; Transmission Electron Microscopy
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Funding
- FEDER
- Spanish MINECO [MAT2010-15094]
- International Project FP7-PEOPLE-IRSES
- Consolider ORFEO [CSD2007-00006]
- Spanish Ministerio de Educacion, Cultura y Deporte [AP2008-03942]
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Using hydrothermal techniques, a novel synthetic approach to prepare ruthenium nanoparticles has been developed. At 180 degrees C and under autogenous pressure, starting from an aqueous solution of ruthenium trichloride, the method yielded nanoparticles whose form and size both depended on the reducing agent: sodium citrate (hexagonal shaped nanocrystals, 1-20 nm), ascorbic acid (spherical nanoparticles, 3-5 nm) and succinic acid (spherical nanoparticles, 1-120 nm). Depending on the reaction variables, the nature and concentration of partially reduced species determines the characteristics of the final products. HRTEM image analysis along with the simulation techniques were stabilized preferential growth of nanoparticles on specific directions. Ruthenium samples have been investigated by Temperature-Programmed Reduction (TPR) showing that the reduction temperature of nanoparticles is correlated to their nanocrystalline size.
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