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Dembowski M, Colla CA, Yu P, Qiu J, Szymanowski JES, Casey WH, Burns PC. The Propensity of Uranium-Peroxide Systems to Preserve Nanosized Assemblies. Inorg Chem 2017; 56:9602-9608. [DOI: 10.1021/acs.inorgchem.7b01095] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Duster TA, Szymanowski JES, Fein JB. Experimental Measurements and Surface Complexation Modeling of U(VI) Adsorption onto Multilayered Graphene Oxide: The Importance of Adsorbate-Adsorbent Ratios. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2017; 51:8510-8518. [PMID: 28722400 DOI: 10.1021/acs.est.6b05776] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Surface complexation models use experimental adsorption measurements to calculate stability constants that quantify the thermodynamic stability of adsorbed species. However, these constants are often poorly constrained due to nearly complete removal of the solute from solution and/or because the tested adsorbate:adsorbent ratios are not varied sufficiently. Using data sets that quantify the adsorption of U(VI) to multilayered graphene oxide (MLGO), we tested whether three different U(VI):MLGO ratios (3 ppm U; 20-210 mg L-1 MLGO) affect the ability of nonelectrostatic and diffuse layer models to predict U(VI) adsorption behaviors across a range of ionic strength (1-100 mM) and pH (2-9.5) conditions. Model formulations assumed interactions between discrete MLGO surfaces sites and the most abundant aqueous U(VI) complex(es) within a given pH range. We determined that the observed extents of U(VI) binding require adsorption of more than one U(VI) species (UO22+ and uranyl hydroxide(s) and/or carbonate(s)) and calculated the respective stability constants for the important U(VI)-MLGO surface complexes. The results also unequivocally illustrated that models using adsorption data from treatments with higher U(VI):MLGO ratios provide better fits throughout the tested range of experimental conditions, meaning that the U(VI)-MLGO stability constants calculated herein can be confidently applied to a range of natural or engineered systems.
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Gao Y, Dembowski M, Szymanowski JES, Yin W, Chuang SSC, Burns PC, Liu T. A Spontaneous Structural Transition of {U
24
Pp
12
} Clusters Triggered by Alkali Counterion Replacement in Dilute Solution. Chemistry 2017; 23:7915-7919. [DOI: 10.1002/chem.201701972] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2017] [Indexed: 11/06/2022]
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Dembowski M, Colla CA, Hickam S, Oliveri AF, Szymanowski JES, Oliver AG, Casey WH, Burns PC. Hierarchy of Pyrophosphate-Functionalized Uranyl Peroxide Nanocluster Synthesis. Inorg Chem 2017; 56:5478-5487. [DOI: 10.1021/acs.inorgchem.7b00649] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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Qiu J, Dong S, Szymanowski JES, Dobrowolska M, Burns PC. Uranyl-Peroxide Clusters Incorporating Iron Trimers and Bridging by Bisphosphonate- and Carboxylate-Containing Ligands. Inorg Chem 2017; 56:3738-3741. [DOI: 10.1021/acs.inorgchem.7b00389] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Qiu J, Spano TL, Dembowski M, Kokot AM, Szymanowski JES, Burns PC. Sulfate-Centered Sodium-Icosahedron-Templated Uranyl Peroxide Phosphate Cages with Uranyl Bridged by μ–η1:η2 Peroxide. Inorg Chem 2017; 56:1874-1880. [DOI: 10.1021/acs.inorgchem.6b02429] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Peruski KM, Bernales V, Dembowski M, Lobeck HL, Pellegrini KL, Sigmon GE, Hickam S, Wallace CM, Szymanowski JES, Balboni E, Gagliardi L, Burns PC. Uranyl Peroxide Cage Cluster Solubility in Water and the Role of the Electrical Double Layer. Inorg Chem 2017; 56:1333-1339. [PMID: 28075118 DOI: 10.1021/acs.inorgchem.6b02435] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Flynn SL, Szymanowski JES, Dembowski M, Burns PC, Fein JB. Experimental measurements of U24Py nanocluster behavior in aqueous solution. RADIOCHIM ACTA 2016. [DOI: 10.1515/ract-2015-2493] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
Uranyl peroxide nanoclusters may impact the mobility and partitioning of uranium at contaminated sites and could be used in the isolation of uranium during the reprocessing of nuclear waste. Their behavior in aqueous systems must be better understood to predict the environmental fate of uranyl peroxide nanoclusters and for their use in engineered systems. The aqueous stability of only one uranyl peroxide nanocluster, U60 (K16Li44[UO2(O2)OH]60), has been studied to date [Flynn, S. L., Szymanowski, J. E. S., Gao, Y., Liu, T., Burns, P. C., Fein, J. B.: Experimental measurements of U60 nanocluster stability in aqueous solution. Geochemica et Cosmochimica Acta 156, 94–105 (2015)]. In this study, we measured the aqueous stability of a second uranyl peroxide nanocluster, U24Py (Na30[(UO2)24(O2)24(HP2O7)6(H2P2O7)6]), in batch systems as a function of time, pH, and nanocluster concentration, and then compared the aqueous behavior of U24Py to U60 to determine whether the size and morphology differences result in differences in their aqueous behaviors. Systems containing U24Py nanoclusters took over 30 days to achieve steady-state concentrations of monomeric U, Na, and P, illustrating slower reaction kinetics than parallel U60 systems. Furthermore, U24Py exhibited lower stability in solution than U60, with an average of 72% of the total mass in each nanocluster suspension being associated with the U24Py nanocluster, whereas 97% was associated with the U60 nanocluster in parallel experiments [Flynn, S. L., Szymanowski, J. E. S., Gao, Y., Liu, T., Burns, P. C., Fein, J. B.: Experimental measurements of U60 nanocluster stability in aqueous solution. Geochemica et Cosmochimica Acta 156, 94–105 (2015)]. The measurements from the batch experiments were used to calculate ion activity product (IAP) values for the reaction between the U24Py nanocluster and its constituent monomeric aqueous species. The IAP values, calculated assuming the activity of the U24Py nanocluster is equal to its concentration in solution, exhibit a significantly lower nanocluster concentration dependence than those IAP values calculated assuming an activity of 1 for the nanocluster. The inclusion of a deprotonation reaction for U24Py minimizes the pH dependence of the calculated IAP values. The modeling results suggest that the U24Py nanocluster experiences sequential deprotonation. Taken together, the results indicate that the aqueous behavior of the U24Py nanocluster, like that of U60, is best described as that of an aqueous complex.
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Qiu J, Dembowski M, Szymanowski JES, Toh WC, Burns PC. Time-Resolved X-ray Scattering and Raman Spectroscopic Studies of Formation of a Uranium-Vanadium-Phosphorus-Peroxide Cage Cluster. Inorg Chem 2016; 55:7061-7. [DOI: 10.1021/acs.inorgchem.6b00918] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Gao Y, Szymanowski JES, Sun X, Burns PC, Liu T. Thermal Responsive Ion Selectivity of Uranyl Peroxide Nanocages: An Inorganic Mimic of K
+
Ion Channels. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201601852] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Gao Y, Szymanowski JES, Sun X, Burns PC, Liu T. Thermal Responsive Ion Selectivity of Uranyl Peroxide Nanocages: An Inorganic Mimic of K(+) Ion Channels. Angew Chem Int Ed Engl 2016; 55:6887-91. [PMID: 27105921 DOI: 10.1002/anie.201601852] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2016] [Revised: 03/26/2016] [Indexed: 11/08/2022]
Abstract
An actinyl peroxide cage cluster, Li48+m K12 (OH)m [UO2 (O2 )(OH)]60 (H2 O)n (m≈20 and n≈310; U60 ), discriminates precisely between Na(+) and K(+) ions when heated to certain temperatures, a most essential feature for K(+) selective filters. The U60 clusters demonstrate several other features in common with K(+) ion channels, including passive transport of K(+) ions, a high flux rate, and the dehydration of U60 and K(+) ions. These qualities make U60 (a pure inorganic cluster) a promising ion channel mimic in an aqueous environment. Laser light scattering (LLS) and isothermal titration calorimetry (ITC) studies revealed that the tailorable ion selectivity of U60 clusters is a result of the thermal responsiveness of the U60 hydration shells.
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Sigmon GE, Szymanowski JES, Carter KP, Cahill CL, Burns PC. Hybrid Lanthanide-Actinide Peroxide Cage Clusters. Inorg Chem 2016; 55:2682-4. [PMID: 26923457 DOI: 10.1021/acs.inorgchem.6b00207] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A cage cluster consisting of 31 uranyl and 9 Sm(3+) polyhedra self-assembles in an alkaline aqueous peroxide solution and crystallizes (U31Sm9). Trimers of Sm(3+) polyhedra are templated by μ3-η(2):η(2):η(2)-peroxide groups and link to oxo atoms of uranyl ions. Three such trimers link into a ring through uranyl hexagonal bipyramids, and these are attached through six polyhedra to a unit consisting of 21 uranyl hexagonal bipyramids to complete the cage. Luminescence spectra collected with an excitation wavelength of 420 nm reveal fine structure, which is not observed for a cluster containing only uranyl polyhedra.
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Odoh SO, Shamblin J, Colla CA, Hickam S, Lobeck HL, Lopez RAK, Olds T, Szymanowski JES, Sigmon GE, Neuefeind J, Casey WH, Lang M, Gagliardi L, Burns PC. Structure and Reactivity of X-ray Amorphous Uranyl Peroxide, U2O7. Inorg Chem 2016; 55:3541-6. [DOI: 10.1021/acs.inorgchem.6b00017] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Gao Y, Haso F, Szymanowski JES, Zhou J, Hu L, Burns PC, Liu T. Selective Permeability of Uranyl Peroxide Nanocages to Different Alkali Ions: Influences from Surface Pores and Hydration Shells. Chemistry 2015; 21:18785-90. [DOI: 10.1002/chem.201503773] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2015] [Indexed: 11/10/2022]
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Liu Y, Czarnecki A, Szymanowski JES, Sigmon GE, Burns PC. Extraction of uranyl peroxo clusters from aqueous solution by mesoporous silica SBA-15. J Radioanal Nucl Chem 2014. [DOI: 10.1007/s10967-014-3740-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Qiu J, Ling J, Sieradzki C, Nguyen K, Wylie EM, Szymanowski JES, Burns PC. Expanding the Crystal Chemistry of Uranyl Peroxides: Four Hybrid Uranyl-Peroxide Structures Containing EDTA. Inorg Chem 2014; 53:12084-91. [DOI: 10.1021/ic5018906] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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Qiu J, Ling J, Jouffret L, Thomas R, Szymanowski JES, Burns PC. Water-soluble multi-cage super tetrahedral uranyl peroxide phosphate clusters. Chem Sci 2014. [DOI: 10.1039/c3sc52357h] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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Adelani PO, Ozga M, Wallace CM, Qiu J, Szymanowski JES, Sigmon GE, Burns PC. Hybrid Uranyl-Carboxyphosphonate Cage Clusters. Inorg Chem 2013; 52:7673-9. [DOI: 10.1021/ic4008262] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Liao Z, Ling J, Reinke LR, Szymanowski JES, Sigmon GE, Burns PC. Cage clusters built from uranyl ions bridged through peroxo and 1-hydroxyethane-1,1-diphosphonic acid ligands. Dalton Trans 2013; 42:6793-802. [DOI: 10.1039/c3dt33025g] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Qiu J, Nguyen K, Jouffret L, Szymanowski JES, Burns PC. Time-Resolved Assembly of Chiral Uranyl Peroxo Cage Clusters Containing Belts of Polyhedra. Inorg Chem 2012; 52:337-45. [DOI: 10.1021/ic3020817] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Adelani PO, Jouffret LJ, Szymanowski JES, Burns PC. Correlations and Differences between Uranium(VI) Arsonates and Phosphonates. Inorg Chem 2012; 51:12032-40. [DOI: 10.1021/ic301942t] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Qiu J, Ling J, Sui A, Szymanowski JES, Simonetti A, Burns PC. Time-Resolved Self-Assembly of a Fullerene-Topology Core–Shell Cluster Containing 68 Uranyl Polyhedra. J Am Chem Soc 2012; 134:1810-6. [DOI: 10.1021/ja210163b] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Ling J, Qiu J, Szymanowski JES, Burns PC. Low-Symmetry Uranyl Pyrophosphate Cage Clusters. Chemistry 2011; 17:2571-4. [DOI: 10.1002/chem.201003481] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2010] [Indexed: 11/05/2022]
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Ling J, Qiu J, Sigmon GE, Ward M, Szymanowski JES, Burns PC. Uranium Pyrophosphate/Methylenediphosphonate Polyoxometalate Cage Clusters. J Am Chem Soc 2010; 132:13395-402. [DOI: 10.1021/ja1048219] [Citation(s) in RCA: 95] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Ling J, Wallace CM, Szymanowski JES, Burns PC. Hybrid Uranium-Oxalate Fullerene Topology Cage Clusters. Angew Chem Int Ed Engl 2010. [DOI: 10.1002/ange.201003197] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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