Univ.-Prof. Mag. Dr. Hans Flandorfer Univ.-Prof. Dr. Freddy ...¤tstag2017.pdfUniv.-Prof. Mag. Dr....
Transcript of Univ.-Prof. Mag. Dr. Hans Flandorfer Univ.-Prof. Dr. Freddy ...¤tstag2017.pdfUniv.-Prof. Mag. Dr....
Institute of Inorganic Chemistry Functional Materials
Univ.-Prof. Mag. Dr. Hans Flandorfer Univ.-Prof. Dr. Freddy Kleitz Univ.-Prof. Mag. Dr. Klaus Richter
RESEARCH INTERESTS
The scientific investigations conducted at the Institute for Inorganic Chemistry - functional Materials in the field of materials chemistry are currently focused mainly on the three main domains Porous Materials, Solid State
Chemistry and Liquid Metals and Alloys aiming to develop materials for current and next-generation technological applications
Selected Topics: Synthesis Chemistry of Inorganic and Hybrid Materials Porous Functional solids Nanopores Physico-Chemical Characterization Catalysts Adsorbents Energy & Bio-medical applications Phase
Equilibria Crystal Structures Chemical Bonds and Electronic Structures Experimental Thermodynamics Thermodynamic and Statistical Models Defect Structures Liquid Alloys Surface Properties
Synthesis, Functionalization and Characterization of Nanoporous Materials
c
50 nm
Microspheres
Nanospheres
Fibres
Thin Films
SBA-15
Monoliths
Aim: - Synthesize and characterize novel porous materials
- Improve / modify existing ones
- Develop better hosts / supports
Nanocasting Process
Interest: - Solid Catalysts for Organic Reactivity
- Adsorbents (Pollutants, Heavy Metals, Rare Earth, Bio-
molecules)
- Vectorisation and Targeted Delivery of Active Agents
Post-Functionalization
Direct Synthesis (Co-condensation)
Functionalization
Impregnation
Calcination
Selective Removal
of the Silica
Aim: - Develop efficient materials for
waste management, water
cleaning, recovery of rare earth
elements, nuclear isotope
trapping, …
- Energy applications
Selected Applications of (Hybrid) Nanoporous Materials
(Heterogeneous) Catalysis
Environment
Energy
Health
Adsorption
Optics Active Nanoporous Material
Application
Characterization
- Gas Physisorption
- Gas Chemisorption
- X-ray Diffraction
- UV/Vis/IR spectroscopy
- Thermogravimetry
- Calorimetry
- Microscopy
- NMR spectroscopy
- Dynamic Light Scattering
- Zeta Potential
- Etc.
Collaborations with
various local and
international groups for
application specific
characterization
techniques
Rare Earth Extraction (Mixed) Oxides, Zeolites &
Core@Shells
Applications:
Develop novel high specific
surface area catalysts
- Selective oxidation of CO
- H2 production
- Environmental catalysis
- Biomass conversion
Advanced Materials
for Energy storage
Energy storage / electro mobility Advantages:
+ Lightweight
+ Minor memory effect
+ minor self-discharge
+ fast charging
Disadvantages:: - High costs
- Short life span
- safety (thermal run-away)
- availability of lithium ressources
Solutions: - intermetallic anode materials
Binary alloy systems + selective & reversible alloying of Li
Investigation of ternary Li-systems
Promising candidates: Cu-Li-Sn, Cu-Li-Sb, Li-Sb-Sn
- Electrode materials with high capacities: Spinels, perovskites and
conversion materials
Li
Cu/Li
Sn
Cu
Projects and cooperations - DFG FL-730/1-2: „Thermodynamic investigations and phase stabilities of
new electrode materials for new LIB“
- Cooperation with Karlsruhe Institute of Technology (KIT) in framework of
joint project SPP 1473 „WeNDeLIB – Werkstoffe mit neuem „Design für
verbesserte Lithium-Ionen-Batterien“
Goals:
- Producing Vanadium based misfit layer compounds in the
systems V-M-X (M = As, Sb, Bi, Sn, Pb; X = Se, Te) according to
the stoichiometric formula [(MX)1+δ]m(TX2)n
- Explore their properties for technological application
Reason:
- MLCs incorporate the properties of
the technologically interesting
transition metal dichalcogenides
(TMDs) as well as the new properties
occurring in a 2D material. Their
properties can be modulated by
different stacking sequences.
- Problems: Strongly differing melting
temperatures, vapour pressures of
the elements as well as constituents
Approach:
- Pre-alloying, ball milling, CVD, salt flux synthesis
Possible applications:
- Novel Superconductors - Lubrication
- Energy storage (e.g. LIB, SIB) - Sensing
- (Spin-/Opto-) Electronics - Catalysis (HER)
Goals:
- Substitution of rare-earth elements (RE) containing magnets.
BiMn is a ferromagnet with extraordinary magnetic
properties, but is difficult to synthesize as a pure phase.
- Investigation of different methods of synthesis of BiMn
- Survey for ferromagnetic compounds within the ternary systems Bi-
Mn-X (X = Ni, Pt, Rh; Sb)
- Investigation of Mn-Sb alloys
- Magnetic characterization of different materials
Mn
Sb
Bi
Interest:
- Theranostic vectors
(diagnosis + therapy)
- Targeted and Controlled
Drug Delivery systems
- Patient compliant
and safer products
- Personal Healthcare
Bio-Medical
Anode Materials for Li-ion Batteries Permanent Magnets based on BiMn Vanadium Based Misfit Layer Compounds (MLCs)