Ahmet Uysal
@FloatingScience
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Separations, liquid surfaces/interfaces, graphene, soft matter, heavy elements, rare earths, and general science issues. Opinions are my own.
Argonne, IL
Joined February 2015
“Aqueous interfaces in chemical separations” is now online in @ACS_Langmuir. Challenges, opportunities & need for cross-disciplinary communication laid out. Deeply appreciate @OzgeHeinz’s invitation for this perspective. Funding: @doescience
https://t.co/zqT8Ao93rT
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Understanding solution speciation of uranyl is critical for advancing chemical separations and sensing. In our latest work, we showed that N(CH₃)₄⁺ enhances uranyl–nitrate complexation, forming higher-order complexes vs. Na⁺/Li⁺/NH₄⁺ | RSC Advances
pubs.rsc.org
Understanding and manipulating uranyl speciation in aqueous solutions is critical for advancing chemical separation, sensing, and understanding environmental transport of uranyl. We report on the...
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On the cover of this week's issue: "Reactions of Np(VI) and Pu(VI) with Phenanthroline Result in Bending the [NpVIO2]2+ Unit and a Reduced Pu(V) Species" Read it here 🔗 https://t.co/LSDXhhr5Rc
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As demand for #minerals continues to rise, the @USGS's Mineral Resources Program (MRP) will be increasingly relied upon to help guide decision-makers. Read our new report on the MRP and how it can be utilized to help meet U.S. mineral resource needs: https://t.co/uNxGmLWVfN
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We used small-angle X-ray scattering and molecular dynamics simulations to investigate organic phase structural changes upon contact with water in a model ternary system of water/alkane/extractant | The Journal of Physical Chemistry B
pubs.acs.org
Organic phase aggregation and phase splitting are two important (and connected) phenomena in liquid–liquid extraction of metal ions. Previously, we demonstrated how structure in binary mixtures of...
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Here at Argonne, we synthesize compounds both down the alkali metal group and across the actinide period. Check out a comprehensive series of alkali tris(acetato)actinyl(VI) (U, Np, Pu) compounds | European Journal of Inorganic Chemistry
chemistry-europe.onlinelibrary.wiley.com
Alkali tris(acetato) actinyl(VI) complexes of different actinyls and identical alkali metals are mostly isostructural, showing a redshift in the symmetric actinyl stretch across the actinide series....
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A comprehensive study on uranyl luminescence quenching by various alkali metal and quaternary ammonium cations was investigated and is available now at Physical Chemistry Chemical Physics
pubs.rsc.org
The quenching of uranyl luminescence by various cation species was studied in aqueous media at low pH. Solutions with different nitrate salts, held at constant uranyl nitrate, nitric acid, and ion...
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#ChemPhysChem Using synchrotron X-rays & sum frequency generation spectroscopy, @HESS_Argonne group demonstrate how trivalent rare earths enhance surface deprotonation and drive interfacial water ordering, with insights into REE separations #openaccess 🔓
chemistry-europe.onlinelibrary.wiley.com
This study explores neodymium (Nd) adsorption on Langmuir monolayers of octadecylphosphonic acid (ODPA) at the air/water interface. Using sum frequency generation spectroscopy and X-ray fluorescence...
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Reactions of Np(VI) and Pu(VI) with Phenanthroline Result in Bending the [NpVIO2]2+ Unit and a Reduced Pu(V) Species | Journal of the American Chemical Society
pubs.acs.org
Despite decades of actinyl chemistry, genuinely bent actinyl structures remain rare beyond uranium. We report the first crystallographic characterization of a bent neptunyl(VI) complex, NpO2Cl2(phe...
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Reactions of Studtite UO4·4H2O in Alkali Hydroxides: Isolation of Single-Crystal Uranate Phases under Mild Hydrothermal Conditions | Crystal Growth & Design
pubs.acs.org
Uranyl peroxide complexes, particularly studtite (UO4·4H2O), are important phases within the nuclear fuel cycle, forming through radiolysis-induced reactions on the surfaces of spent fuel and in...
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Sub-nanometer Confinement Suppresses Autoionization of Water | Journal of the American Chemical Society @UCSD @scrippsresearch @PaesaniLab
pubs.acs.org
Water confined within nanometer-scale environments plays a central role in functional materials for nanofluidic and membrane-based applications, where acid–base equilibria and proton transport govern...
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From our archives: “History of the cyclotron” by M. Stanley Livingston from October 1959 On May 1, 1959, in memory of the late Ernest Orlando Lawrence, two invited lectures on the history of the cyclotron were presented as part of the American Physical Society's annual spring
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Seaborgium-257 was produced by colliding a beam of chromium-52 with a thin layer of lead-206. The researchers detected 21 spontaneous fission decays of a seaborgium-257 nucleus, as well as one alpha decay, for a total of 22 nuclei. https://t.co/IIlxedMdev
chemistryworld.com
Findings offer 'exciting hints' on the impact of shell effects on the fission properties of superheavy nuclei
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On Sunday I traveled to the middle of the desert to capture this: The ISS against our sun. What I didn't expect: the sun producing a magnificent flare at the same time A once-in-a-lifetime shot I'm thrilled to share with you. See the uncropped shot or get the print in the reply
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Argonne is proud to host the 30th Rare Earth Research Conference, June 15–19! Over 200 experts, 170+ presentations, and a week of collaboration on rare earth & f-element science. Learn more - https://t.co/NsG5obkVzg
#RERC30
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Congratulations to Argonne chemist Rebecca Caravan, who was recently awarded the inaugural Wing Tsang Early Career Award for her pivotal research advancing the understanding of chemical kinetics and for her dedication to mentorship - https://t.co/j7EQ3Aimpc
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Did you know? If relativity did not play a role, a piece of gold would look gray. Relativity contracts the 6s orbital & lowers its energy, and does the opposite with the 5d orbitals. Optical absorption, due to the 5d->6s transition, is in the blue, so the color of gold is yellow!
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📢 #PhotonScience Researchers: Submit your cutting-edge photon-based research to our new journal, Photon Science! Topics include Photonics, Energy, Life Science, Materials Science, Machine Learning & more. Submit your manuscript or learn more: https://t.co/nb6TG9x7Ba
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“Direct observation of carbon dioxide adsorption and binding at the air/aqueous interface” is published in March issue of @PNASNexus. Great work by @MokhtarMrashwan . Wonderful collaboration with @NymanMay. @HESS_Argonne
https://t.co/TyaRLcu0RU
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