This presentation will illustrate how the integration of laboratory experiments, X-ray photoelectron spectroscopy (XPS), and synchrotron-based X-ray absorption spectroscopy (XAS) facilitates the investigation of Mn and U nanomaterials in the environment. The integration of XPS and XAS has been essential for the determination of oxidation states of Mn-oxide and U-bearing nanoparticles to better understand redox reactions affecting metal transport and remediation. Additionally, recent advances have facilitated understanding nanoparticle accumulation in plants and cell cultures which have important implication for toxicology, risk assessment, and risk reduction. This work pays tribute to the interdisciplinary spirit and scientific curiosity of Professor Michael Hochella who has illustriously mentored and inspired a new generation of scientists interested in nanotechnology for earth and environmental sciences and engineering.

Spectroscopy and redox reactions: Lessons learned from Mn and U nanoparticles

ACS Fall 2021

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