Author/Authors :
Tchaplyguine، نويسنده , , M. and Zhang، نويسنده , , Ch. and Andersson، نويسنده , , T. and Bjِrneholm، نويسنده , , O.، نويسنده ,
Abstract :
A preparation method for silver-oxide containing nanoparticles is described. The suggested approach allows varying the oxidation degree from monoxide to an oxygen-rich state resembling superoxide The method is based on magnetron reactive sputtering and vapour aggregation, and utilizes silver–oxygen interaction in the vapour phase – prior to the nanoparticle aggregation from the vapour. Synchrotron-based photoelectron spectroscopy – a local probing method with high chemical sensitivity – allows ‘on-the-fly’ analysis of the composition and oxidation degree in nanoparticles, before any deposition of the particles. Preparation and properties of oxygen-rich nanoparticles are discussed in connection to the catalytic processing of economically important hydrocarbons.
