catalysis – Page 4 – TechConnect Briefs

Destruction of Organophosphate Agents by Recyclable Catalytic Magnetic Nanoparticles

Bromberg L., Hatton T.A., Massachusetts Institute of Technology, US

Organophosphorus pesticides and warfare agents are not readily hydrolyzed in aqueous media without applying extremes of pH, heat, or bleach. We show that suspensions of magnetite (Fe3O4) nanoparticles modified with a common antidote, 2-pralidoxime (PAM), [...]

Nanoparticles in chemistry and their industrial applications

Maestro P., Bomal Y., Chopin T., RHODIA RECHERCHES ET TECHNOLOGIES, FR

Micro- and nanotechnologies are at the centre of numerous investigations and huge investments, essentially in the areas of information technologies and health care . The technologies utilised mainly take advantage of microelectronics and/or rather sophisticated [...]

Overview – Nanoparticulate Dry (Flame) Synthesis & Applications

Pratsinis S.E., ETH Zürich, CH

Flame synthesis is a scalable technology that was developed largely by valiant evolutionary research for manufacture of commodities (e.g. carbon blacks, fumed silica and pigments). In the last 5-10 years, however, major advances in the [...]

Structure Determination of Small Metal Clusters by Density-Functional Theory and Comparison with Experimental Far-Infrared Spectra

Ratsch C., Fielicke A., Behler J., Scheffler M., von Helden G., Meijer G., University of California, Los Angeles, US

The far-infrared vibrational spectra for charged vanadium clusters as well as charged and neutral niobium clusters have been measured size specifically using farinfrared multiple photon dissociation. The ground state energy and vibrational spectra of a [...]

Soft and Probe Lithography without Ink Transfer

Huskens J., Li X., Péter M., Reinhoudt D.N., University of Twente, MESA+ Research Institute, NL

Microcontact printing (mCP) and dip-pen nanolithography (DPN) are versatile techniques for the creation of patterned surfaces. They commonly employ the transfer of an ink (e.g. a thiol) onto a surface (e.g. a gold-coated substrate) thus [...]

Surface Morphology and Chemically Active Sites on Ru Based Ultracapacitors: Montecarlo Simulation with Embedded Atom Potentials

Blum L., Legault M.D., Zypman F.R., University of Puerto Rico, US

Transition metals and their oxides play an important role as catalyzers in chemical reactions occuring in modern batteries. In particular, ruthenium (Ru) has been identified as a promising candidate for use in next-generation batteries for [...]