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Erscheinungsjahr
- 2017 (2) (entfernen)
Dokumenttyp
Sprache
- Englisch (2)
Schlagworte
- Adsorption of phosphate (1)
- Catalysis (1)
- Microporous layer (1)
- Polymer electrolyte membrane fuel cell (1)
- Radiography (1)
- Synchrotron X-ray imaging (1)
- Water distribution (1)
- XAFS (1)
- Zn-Fe-Zr nanoparticles (1)
Currently great effort is made to find materials and technologies for the recycling of phosphate from wastewater.
Herein, we present an in-depth study of the Phosphate adsorption mechanism of a promising adsorber material, a Zn−Fe−Zr oxyhydroxide-based nanostructured precipitate. The behavior of the multicomponent nanomaterial, consisting of both crystalline and amorphous parts, is investigated via X-ray absorption fine structure spectroscopy and Mössbauer spectroscopy, revealing the importance of the nanostructured composition for the phosphate adsorption. We found evidence that adsorption takes place especially in the vicinity of iron sites in the amorphous part of the material.
In this investigation, synchrotron X-ray imaging was used to investigate the water distribution inside newly developed gas diffusion media in polymer electrolyte membrane fuel cells. In-situ radiography was used to reveal the relationship between the structure of the microporous layer (MPL) and the water flow in a newly developed MPL equipped with randomly arranged holes. A strong influence of these holes on the overall water transport was found. This contribution provides a brief overview to some of our recent activities on this research field.