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Actinides are a major source of radioactivity associated with nuclear waste and their transport in environmental systems is enhanced through adsorption onto small (1-5 nm) nanoparticles. The Forbes research group synthesizes novel actinide nanomaterials that are used as geochemical model compounds to enhance our understanding of the mobility of nuclear materials in environmental systems. Single-crystal X-ray diffraction and synchrotron techniques, such as high-energy X-ray scattering, are used to provide a molecular-level understanding of the structural characteristics of the 232Th and 238U complexes that will aid in the development of novel remediation methods for nuclear materials.