Sorption of Molecular Oxygen by Metal–Ion Exchanger Nanocomposites
| Autor: | N. V. Plotnikova, V. A. Krysanov, T. A. Kravchenko |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Nanocomposite
Ion exchange Chemistry Inorganic chemistry chemistry.chemical_element Sorption 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Oxygen 0104 chemical sciences Metal Adsorption Oxidation state Chemisorption visual_art visual_art.visual_art_medium Physical and Theoretical Chemistry 0210 nano-technology |
| Zdroj: | Russian Journal of Physical Chemistry A. 92:527-531 |
| ISSN: | 1531-863X 0036-0244 |
| DOI: | 10.1134/s0036024418030123 |
| Popis: | Kinetic features are studied of the chemisorption and reduction of molecular oxygen from water by metal–ion exchanger nanocomposites that differ in the nature of the dispersed metal and state of oxidation. In the Pd < Ag < Cu series, the increasing chemical activity of metal nanoparticles raises the degree of oxygen sorption due to its chemisorption and subsequent reduction, while the role of the molecular chemisorption stage increases in the Cu < Ag < Pd series. Metal particles or their oxides are shown to act as adsorption sites on the surface and in the pores of the ion-exchanger matrix; the equilibrium sorption coefficient for oxygen dissolved in water ranges from 20 to 50, depending on the nature and oxidation state of the metal component. |
| Databáze: | OpenAIRE |
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