Actinyl Peroxide Nanospheres

Abstract

Waste not: Actinyl nanospheres self‐assembled from alkaline solutions have been shown to be composed of 24, 28, and 32 actinyl peroxide polyhedra (for example, see picture of the uranyl peroxide polyhedra (U‐28)). The nanospheres represent a new class of polyoxometalates, and their formation in nuclear waste may have an impact on the mobility of actinides in the environment.

Topologically and geometrically flexible structural units in seven new organically templated uranyl selenates and selenite–selenates

“…The diversity of polyhedral units found in uranyl compounds is unique, starting from isolated complexes [1][2][3] and clusters [4][5][6][7] to cage compounds [8][9][10][11] and nanotubules [12][13][14]. Selenium-containing uranyl oxysalts are known for both monoand divalent inorganic cations [15][16][17][18][19], as well as for organic template molecules of various charge and structure [20][21][22][23][24].…”

Nanostructured actinide compounds

“…Actinide peroxide nanospheres [3] and uranyl selenate nanotubules [4,5] represent the first examples of nanoscale structures in inorganic actinide compounds. The nanostructured actinide compounds considered here have been obtained under soft synthesis conditions (room-temperature crystallization from aqueous solutions).…”

“…Nanoparticles are also important in environmental systems [13]. Recently, Burns et al [3] reported the synthesis and characterization of a new family of self-assembling actinide nanospheres with compositions such as K 16 24 that are comprised of linear actinyl-peroxide building blocks, and their persistence as stable entities in alkaline solutions.…”

“…Investigations of the organization of matter at the nano-level are under way in many chemical systems with present and potential applications in nanotechnology. Recently, nanoscale structures were reported for the first time for actinide-containing compounds [3][4][5][6].…”

Actinyl Compounds with Hexavalent Elements (S, Cr, Se, Mo) – Structural Diversity, Nanoscale Chemistry, and Cellular Automata Modeling

“…Along with actinide peroxide nanospheres [17] and plutonium colloids, [18] uranyl selenate nanotubules are one of the few known purely inorganic nanoscale actinide structures (though several metal-organic tubular and cluster structures have recently been reported [19] ). The tubules represent one-dimensional porous structures formed by linking uranyl pentagonal bipyramids to SeO 4 tetrahedra through common O atoms.…”