University of Koln (DE)

The research and development activities of the UNICO research group include the synthesis and characterization of inorganic nanostructures by solution and gas-phase techniques. They are equipped to investigate the structural and functional characterization of functional inorganic nanostructues as well as in assessing the possible cytotoxic potential of engineered nanomaterials. The UNICO team (> 40 research personnel) focuses on the discovery of new products based on nanoparticles and nanostructured coatings and to study the scale-up of synthetic protocols by systematic experiments.

List of five recent publications related to the project

  1. One-Step Chemical Vapor Growth of Ge/SiCxNy Nanocables, S. Mathur et al J. Am. Chem. Soc., 129, 9746, 2007
  2. Ordered Iron Oxide Nanotube Arrays of Controlled Geometry and Tunable Magnetism by Atomic Layer Deposition, S. Mathur et al J. Am. Chem. Soc., 129, 9554, 2007.
  3. Chemical Vapor Growth of One-dimensional Magnetite Nanostructures,S. Mathur, S, F. Hernández-Ramírez et al, Adv. Mater., 20, 1550, 2008.
  4. Plasma-Treated SnO2 Nanowires for Enhanced Gas Sensing Performance, S. Mathur et al J. Phys. Chem. C. 114, 8245, 2010.
  5. Ink-Jetable Patterning of Metal-Catalysts for Regioselective Growth of Nanowires, S. Mathur et al, Nanoscale, 2010, 2, 209
Within WIROX, UNICO will be mainly involved in the development of new strategies for the fabrication and modification of nanostructured oxides in planar (films) and anisotropic (nanowires, nanorods) forms to synthesize simple and heterostructures (e.g., multi-layered, core-shell, gradient forms). This necessitates close interaction with other WIROX-partners as the materials modification will be based on the feedback obtained from the groups investigating the functional properties. The work plan will constitute of various steps such as development of suitable metal-organic precursors (chemical sources for CVD), syntheses of nanostructured films and anisotropic architectures by thermal (LP-CVD) and plasma-enhanced chemical vapour deposition (PE-CVD).