Facile Synthesis of Size-controlled Rh Nanoparticles via Microwave-assisted Alcohol Reduction and Their Catalysis of CO Oxidation

Size-controlled Rh nanoparticles stabilized by poly(vinylpyrrolidone) were quickly synthesized via alcohol reduction. Microwave-assisted synthesis in closed vessels allowed alcohols with low-to-high boiling points to be used as reductants under the same preparation conditions. Pure ethanol has not been used previously because its boiling point is lower than the temperature required for Rh3+ reduction. Alcohols with relatively strong reduction ability were found to lead to smaller Rh nanoparticles. The ability to oxidize CO was enhanced as the Rh particle size decreased.

[1]  Katsutoshi Sato,et al.  Solid-Solution Alloying of Immiscible Ru and Cu with Enhanced CO Oxidation Activity. , 2017, Journal of the American Chemical Society.

[2]  M. Navlani-García,et al.  Evolution of the PVP-Pd Surface Interaction in Nanoparticles through the Case Study of Formic Acid Decomposition. , 2016, Langmuir : the ACS journal of surfaces and colloids.

[3]  M. A. Gilarranz,et al.  Effect of size and oxidation state of size-controlled rhodium nanoparticles on the aqueous-phase hydrodechlorination of 4-chlorophenol , 2014 .

[4]  Katsutoshi Sato,et al.  Solid solution alloy nanoparticles of immiscible Pd and Ru elements neighboring on Rh: changeover of the thermodynamic behavior for hydrogen storage and enhanced CO-oxidizing ability. , 2014, Journal of the American Chemical Society.

[5]  A. Gniewek,et al.  Rh(0) Nanoparticles: Synthesis, Structure and Catalytic Application in Suzuki–Miyaura Reaction and Hydrogenation of Benzene , 2013, Topics in Catalysis.

[6]  Katsutoshi Sato,et al.  Discovery of face-centered-cubic ruthenium nanoparticles: facile size-controlled synthesis using the chemical reduction method. , 2013, Journal of the American Chemical Society.

[7]  K. Domen,et al.  Polyol Synthesis of Size-Controlled Rh Nanoparticles and Their Application to Photocatalytic Overall Water Splitting under Visible Light , 2013 .

[8]  S. M. Humphrey,et al.  Beneficial effects of microwave-assisted heating versus conventional heating in noble metal nanoparticle synthesis. , 2012, ACS nano.

[9]  Ejm Emiel Hensen,et al.  Structure sensitivity in the hydrogenation of unsaturated hydrocarbons over Rh nanoparticles , 2012 .

[10]  A. Biacchi,et al.  The solvent matters: kinetic versus thermodynamic shape control in the polyol synthesis of rhodium nanoparticles. , 2011, ACS nano.

[11]  Y. Kubota,et al.  Nanosize-induced hydrogen storage and capacity control in a non-hydride-forming element: rhodium. , 2011, Journal of the American Chemical Society.

[12]  G. Somorjai,et al.  Colloidally Synthesized Monodisperse Rh Nanoparticles Supported on SBA-15 for Size- and Pretreatment-Dependent Studies of CO Oxidation , 2009 .

[13]  Gabor A. Somorjai,et al.  A reactive oxide overlayer on rhodium nanoparticles during CO oxidation and its size dependence studied by in situ ambient-pressure X-ray photoelectron spectroscopy. , 2008, Angewandte Chemie.

[14]  Masayuki Nogami,et al.  Solvothermal Synthesis of Multiple Shapes of Silver Nanoparticles and Their SERS Properties , 2007 .

[15]  Mostafa A. El-Sayed,et al.  Size effects of PVP-Pd nanoparticles on the catalytic Suzuki reactions in aqueous solution , 2002 .

[16]  Song Gao,et al.  A convenient solvothermal route to ruthenium nanoparticles , 2000 .

[17]  Weixia Tu,et al.  Rapid synthesis of nanoscale colloidal metalclusters by microwave irradiation , 2000 .