This work deals with the development of a green and versatile synthesis of stable monoand bi-metallic colloids by means of microwave heating and exploiting ecofriendly reagents: water as the solvent, glucose as a mild and non-toxic reducer and polyvinylpirrolidone (PVP) as the chelating agent. Particle size-control, total reaction yield and long-term stability of colloids were achieved with this method of preparation. All of the materials were tested as effective catalysts in the reduction of p-nitrophenol in the presence of NaBH4 as the probe reaction. A synergistic positive effect of the bimetallic phase was assessed for Au/Cu and Pd/Au alloy nanoparticles, the latter showing the highest catalytic performance. Moreover, monoand bi-metallic colloids were used to prepare TiO2- and CeO2-supported catalysts for the liquid phase oxidation of 5-hydroxymethylfufural (HMF) to 2,5-furandicarboxylic acid (FDCA). The use of Au/Cu and Au/Pd bimetallic catalysts led to an increase in FDCA selectivity. Finally, preformed Pd/Cu nanoparticles were incorporated into the structure of MCM-41-silica. The resulting Pd/Cu MCM-41 catalysts were tested in the hydrodechlorination of CF3OCFClCF2Cl to CF3OCF=CF2. The effect of Cu on the hydrogenating properties of Pd was demonstrated.

Blosi, M., Ortelli, S., Costa, A., Dondi, M., Lolli, A., Andreoli, S., et al. (2016). Bimetallic Nanoparticles as Efficient Catalysts: Facile and Green Microwave Synthesis. MATERIALS, 9(7), 550-574 [10.3390/ma9070550].

Bimetallic Nanoparticles as Efficient Catalysts: Facile and Green Microwave Synthesis

LOLLI, ALICE;ANDREOLI, SARA;BENITO MARTIN, PATRICIA;ALBONETTI, STEFANIA
2016

Abstract

This work deals with the development of a green and versatile synthesis of stable monoand bi-metallic colloids by means of microwave heating and exploiting ecofriendly reagents: water as the solvent, glucose as a mild and non-toxic reducer and polyvinylpirrolidone (PVP) as the chelating agent. Particle size-control, total reaction yield and long-term stability of colloids were achieved with this method of preparation. All of the materials were tested as effective catalysts in the reduction of p-nitrophenol in the presence of NaBH4 as the probe reaction. A synergistic positive effect of the bimetallic phase was assessed for Au/Cu and Pd/Au alloy nanoparticles, the latter showing the highest catalytic performance. Moreover, monoand bi-metallic colloids were used to prepare TiO2- and CeO2-supported catalysts for the liquid phase oxidation of 5-hydroxymethylfufural (HMF) to 2,5-furandicarboxylic acid (FDCA). The use of Au/Cu and Au/Pd bimetallic catalysts led to an increase in FDCA selectivity. Finally, preformed Pd/Cu nanoparticles were incorporated into the structure of MCM-41-silica. The resulting Pd/Cu MCM-41 catalysts were tested in the hydrodechlorination of CF3OCFClCF2Cl to CF3OCF=CF2. The effect of Cu on the hydrogenating properties of Pd was demonstrated.
2016
Blosi, M., Ortelli, S., Costa, A., Dondi, M., Lolli, A., Andreoli, S., et al. (2016). Bimetallic Nanoparticles as Efficient Catalysts: Facile and Green Microwave Synthesis. MATERIALS, 9(7), 550-574 [10.3390/ma9070550].
Blosi, Magda; Ortelli, Simona; Costa, Anna; Dondi, Michele; Lolli, Alice; Andreoli, Sara; Benito, Patricia; Albonetti, Stefania
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/569635
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