Department of Chemistry
Indian Institute of Technology Delhi

X-ray diffraction as a powerful technique for the characterization of nanostructural materials

Dr. Oleg Prymak

University of Duisburg-Essen, Germany

Date: June 07th 2019 (Friday)
Time: 10:30 AM
Venue: Committee Room (MS710), Chemistry Department, 6th Floor

Abstract: The facility for X-ray diffraction of the University of Duisburg-Essen (UDE) will be presenting the different possibilities of measurements with various examples in X-ray powder diffraction (PXRD), especially for the investigation of nanostructural materials. X-ray powder diffraction with different geometrical setups is a complementary non-destructive technique for the determination of crystallographic and size-related properties of crystalline (nano/bio)materials. Here, some examples of PXRD measurements in different applications with the use of Rietveld refinement, including sizespecific data obtained from colloid-chemical analysis (DLS, DCS), transmission and scanning electron microscopy (TEM/SEM), energy dispersive X-ray (EDX) and ultraviolet-visible (UV-vis) spectroscopy and thermogravimetry (TG) will be presented. Several scientific questions will be addressed, like:
- How can crystallite size, residual stress and texture be determined for nanostructural materials?
- How do we investigate a thin coating of nanomaterials and organic scaffolds with nanoparticles?
- Which advantages does a characterization of samples in temperature chamber (low/high) offer?
- Do the metallic nanoparticles have similar crystallographic properties as the bulk materials?
All of these scientific problems can be solved by the use of X-ray diffractometers in different geometries, working on the devices Bruker D8 Advance and Panalytical Empyrean.

All are cordially invited to attend.
Convener (Seminar)