Eu3+ exchange in high-charge synthetic Mica-2 for radioactive waste storage applications

DOI: 10.1007/978-94-024-2138-5_30

Authors: M. T. Candela (University of Cantabria) , R. Martín-Rodríguez (University of Cantabria) , R. Valiente (University of Cantabria) , A. C. Perdigon (University of Cantabria) , S. Diaz-Moreno (Diamond Light Source) , F. Aguado (IDIVAL; Universidad de Cantabria)
Co-authored by industrial partner: No

Type: Book Chapter

Book Chapter: 30

State: Published (Approved)
Published: May 2022

Abstract: High charge synthetic Na-Mica-2 has been synthesized by the NaCl melt method. The Na+ cations in the interlayer space of the clay have been exchanged with Eu3+ ions by a cation exchange reaction. The correct incorporation of Eu3+ and further characterization of its coordination environment and location within the clay, as well as its optical properties, have been studied by means of x-ray diffraction, x-ray absorption (XANES and EXAFS), thermogravimetry and luminescence. Different structural scenarios for the incorporation of europium have been proposed and evaluated.

Journal Keywords: Mica; Cation exchange; Eu3+

Subject Areas: Materials, Chemistry, Earth Science


Instruments: I20-Scanning-X-ray spectroscopy (XAS/XES)

Added On: 23/05/2022 11:40

Discipline Tags:

Earth Sciences & Environment Radioactive Materials Physical Chemistry Chemistry Materials Science Nuclear Waste Inorganic Chemistry

Technical Tags:

Spectroscopy X-ray Absorption Spectroscopy (XAS) Extended X-ray Absorption Fine Structure (EXAFS) X-ray Absorption Near Edge Structure (XANES)