Data collection at MAX IV Laboratory

This week, researchers Tinatin Tkesheliadze and Kaifeng Wang are at MAX IV Laboratory in Lund, Sweden, collecting arsenic K-edge X-ray absorption spectroscopy (XAS) data as part of our ongoing work to convert arsenic-laden wastes into valuable semiconductor raw materials.

The experiment focuses on understanding the molecular-scale pathways to convert toxic arsenic wastes into metallic arsenic (As(0)), a material critical for clean energy and digital technologies. Using the exceptional beam quality at MAX IV, the team successfully acquired high signal-to-noise EXAFS data out to k = 18 Å⁻¹, which provided an unprecedented perspective into the atomic structure of the upcycled As(0) solids.

This beamtime marks an important milestone in our work to couple contaminant remediation with resource recovery. It also illustrates the unique advantage of having one of the world’s most advanced synchrotron facilities right in our backyard.