Elucidating structure-property relationships in the design of metal nanoparticle catalysts for the activation of molecular oxygen

A novel synthetic strategy for the design of metal nanoparticles by extrusion of anionic chloride precursors from a porous copper chlorophosphate framework has been devised for the sustainable aerobic oxidation of vanillyl alcohol (4-hydroxy-3-methoxybenzyl alcohol) to vanillin (4-hydroxy-3-methoxybenzaldehyde) using a one-step, base-free method. The precise nature of the Au, Pt, and Pd species has been elucidated for the as-synthesized and thermally activated analogues, which exhibit fascinating catalytic properties when subjected to diverse activation environments. By employing a combination of structural and spectroscopic characterization tools, it has been shown that analogous heat treatments have differing effects on extrusion of a particular metal species. The most active catalysts in this series of materials were the extruded Pt nanoparticles that were generated by reduction in H2, which exhibit enhanced catalytic behavior, when compared to its Au or Pd counterparts, for industrially significant, aerobic oxidation reactions

Extruded metal nanoparticles as sustainable oxidation catalysts

link_to_subscribed_fulltex

Live Demonstration: System based on Electronic Skin and Cutaneous Electrostimulation for Sensory Feedback in Prosthetics

To restore the sense of touch in upper limb prosthetics, a prosthetic device can be equipped with tactile sensors providing data to be transmitted to the user using either invasive or non-invasive interfaces. This demo will be based on our sensing - noninvasive stimulation feedback system [1]. It will show two important aspects of our technology: 1) High sensitivity: light touch detection will be enabled by the high sensitivity of electronic skin (e-skin) prototypes for fingertips, 2) Measuring complex interactions: different contact shapes and multiple contact points will be detected by the commercial e-skin prototype suitable for palm

Elucidating structure-property relationships in the design of metal nanoparticle catalysts for the activation of molecular oxygen

© 2015 American Chemical Society. A novel synthetic strategy for the design of metal nanoparticles by extrusion of anionic chloride precursors from a porous copper chlorophosphate framework has been devised for the sustainable aerobic oxidation of vanillyl alcohol (4-hydroxy-3-methoxybenzyl alcohol) to vanillin (4-hydroxy-3-methoxybenzaldehyde) using a one-step, base-free method. The precise nature of the Au, Pt, and Pd species has been elucidated for the as-synthesized and thermally activated analogues, which exhibit fascinating catalytic properties when subjected to diverse activation environments. By employing a combination of structural and spectroscopic characterization tools, it has been shown that analogous heat treatments have differing effects on extrusion of a particular metal species. The most active catalysts in this series of materials were the extruded Pt nanoparticles that were generated by reduction in H2, which exhibit enhanced catalytic behavior, when compared to its Au or Pd counterparts, for industrially significant, aerobic oxidation reactions.Link_to_subscribed_fulltex