HZB part of new metal oxide/water systems CRC
A team of HZB researchers is part of the new collaborative research center, "Molecular insights into metal oxide/water systems" funded by the German Research Association. As part of this CRC, Dr. Bernd Winter of Prof. Dr. Emad Aziz's junior research group will be studying metal ions and metal oxide complexes in aqueous solution at BESSY II.
Spokesman of the CRC is Prof. Dr. Christian Limberg of the Humboldt University Berlin. Other partners include the Freie Universität Berlin, the Technical University of Berlin, Potsdam University, the Federal Institute for Materials Research and Testing Berlin, and the Fritz Haber Institute of the Max Planck Society Berlin.
The researchers are using a liquid microjet under vacuum conditions allowing them to obtain measurements of aqueous solutions using photoelectron spectroscopy at BESSY II. Their measurements allow for conclusions to be drawn on the binding energies and on electronic relaxation processes and thus provide clues as to the interaction between metal oxide complexes and the surrounding water molecules. In addition, the technique can be used to determine precursor molecules that will go on to form larger metal-oxo networks.
These insights are key to our ability to synthesize metal oxides for specific applications, which is typically done in aqueous solution. The reason being that metal oxides are highly interesting in terms of their technological applicability: they upgrade building materials and special types of glass, improve the properties of ceramic implants in medicine, and are considered interesting candidates for use in fuel cells, solar cells, microelectronics, and as novel kinds of catalysts.
Spokesman of the CRC "Molecular insights into metal oxide/water systems: Structural evolution, interface, and resolution" is Prof. Dr. Christian Limberg of the Humboldt University Berlin. Other partners include the Freie Universität Berlin, the Technical University of Berlin, Potsdam University, the Federal Institute for Materials Research and Testing Berlin, and the Fritz Haber Institute of the Max Planck Society Berlin. Together, the participating research groups are hoping to investigate different fundamental processes relating to metal oxide interactions with water on all relevant length scales using a combination of chemical synthesis and cutting-edge experimental and theoretical methods. In late November 2013, the German Research Association established nine new collaborative research centers (CRC's), which, through mid-2017, will receive federal funding in the amount of 64.4 million Euros total.
- Technology Transfer Prize Ceremony 2025This year’s Technology Transfer Prize Ceremony will take place on October 13 at 2 pm in the Lecture Hall, BESSY II Building, Adlershof.
- Porous Radical Organic framework improves lithium-sulphur batteriesA team led by Prof. Yan Lu, HZB, and Prof. Arne Thomas, Technical University of Berlin, has developed a material that enhances the capacity and stability of lithium-sulphur batteries. The material is based on polymers that form a framework with open pores (known as radical-cationic covalent organic frameworks or COFs). Catalytically accelerated reactions take place in these pores, firmly trapping polysulphides, which would shorten the battery life. Some of the experimental analyses were conducted at the BAMline at BESSY II.
- Metallic nanocatalysts: what really happens during catalysisUsing a combination of spectromicroscopy at BESSY II and microscopic analyses at DESY's NanoLab, a team has gained new insights into the chemical behaviour of nanocatalysts during catalysis. The nanoparticles consisted of a platinum core with a rhodium shell. This configuration allows a better understanding of structural changes in, for example, rhodium-platinum catalysts for emission control. The results show that under typical catalytic conditions, some of the rhodium in the shell can diffuse into the interior of the nanoparticles. However, most of it remains on the surface and oxidises. This process is strongly dependent on the surface orientation of the nanoparticle facets.