1
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Kalintsev A, Guan Q, Brugger J, Migdisov A, Etschmann B, Ram R, Liu W, Mei Y, Testemale D, Xu H. Nature and coordination geometry of geologically relevant aqueous Uranium(VI) complexes up to 400 ºC: A review and new data. JOURNAL OF HAZARDOUS MATERIALS 2023; 452:131309. [PMID: 37018892 DOI: 10.1016/j.jhazmat.2023.131309] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2023] [Revised: 03/23/2023] [Accepted: 03/26/2023] [Indexed: 06/19/2023]
Abstract
The structure of the uranyl aqua ion (UO22+) and a number of its inorganic complexes (specifically, UO2Cl+, UO2Cl20, UO2SO40, [Formula: see text] , [Formula: see text] and UO2OH42-) have been characterised using X-Ray absorption spectroscopy/extended X-Ray absorption fine structure (XAS/EXAFS) at temperatures ranging from 25 to 326 ºC. Results of ab initio molecular dynamics (MD) calculations are also reported for uranyl in chloride and sulfate-bearing fluids from 25 to 400 ºC and 600 bar to 20 kilobar (kb). These results are reported alongside a comprehensive review of prior structural characterisation work with particular focus given to EXAFS works to provide a consistent and up-to-date view of the structure of these complexes under conditions relevant to U mobility in ore-forming systems and around high-grade nuclear waste repositories. Regarding reported EXAFS results, average equatorial coordination was found to decrease in uranyl and its sulfate and chloride complexes as temperature rose - the extent of this decrease differed between species and solution compositions but typically resulted in an equatorial coordination number of ∼3-4 at temperatures above 200 ºC. The [Formula: see text] complex was observed at temperatures from 25 to 247 ºC and exhibited no major structural changes over this temperature range. UO2OH42- exhibited only minor structural changes over a temperature range from 88 to 326 ºC and was suggested to manifest fivefold coordination with four hydroxyl molecules and one water molecule around its equator. Average coordination values derived from fits of the reported EXAFS data were compared to average coordination values calculated using the experimentally derived thermodynamic data for chloride complexes reported by Dargent et al. (2013) and Migdisov et al. (2018b), and for sulfate complexes reported by Alcorn et al. (2019) and Kalintsev et al. (2019). Sulfate EXAFS data were well described by available thermodynamic data, and chloride EXAFS data were described well by the thermodynamic data of Migdisov et al. (2018b), but not by the data of Dargent et al. (2013). The ab initio molecular dynamics calculations confirmed the trends in equatorial coordination observed with EXAFS and were also able to provide an insight into the effect of pressure in equatorial water coordination - for a given temperature, higher pressures appear to lead to a greater number of equatorially bound waters counteracting the temperature effect.
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Affiliation(s)
- Alexander Kalintsev
- School of Earth, Atmosphere and Environment, Monash University, 9 Rainforest Walk, VIC 3800, Australia; Los Alamos National Laboratory, Earth & Environmental Division, Los Alamos, NM, USA.
| | - Qiushi Guan
- CSIRO Mineral Resources, Kensington, WA 6151, Australia
| | - Joël Brugger
- School of Earth, Atmosphere and Environment, Monash University, 9 Rainforest Walk, VIC 3800, Australia
| | - Artas Migdisov
- Los Alamos National Laboratory, Earth & Environmental Division, Los Alamos, NM, USA
| | - Barbara Etschmann
- School of Earth, Atmosphere and Environment, Monash University, 9 Rainforest Walk, VIC 3800, Australia
| | - Rahul Ram
- School of Earth, Atmosphere and Environment, Monash University, 9 Rainforest Walk, VIC 3800, Australia
| | - Weihua Liu
- CSIRO Mineral Resources, Kensington, WA 6151, Australia
| | - Yuan Mei
- CSIRO Mineral Resources, Kensington, WA 6151, Australia
| | - Denis Testemale
- CNRS, Université Grenoble Alpes, Institut NEEL, Grenoble F-38000, France
| | - Hongwu Xu
- Los Alamos National Laboratory, Earth & Environmental Division, Los Alamos, NM, USA
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2
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Al Lafi AG, Al Abdullah J, Amin Y, Aljbai Y, Allham H, Obiad A. The effects of pH on U(VI)/Th(IV) and Ra(II)/Ba(II) adsorption by polystyrene-nano manganese dioxide composites: Fourier Transform Infra-Red spectroscopic analysis. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2022; 267:120588. [PMID: 34782269 DOI: 10.1016/j.saa.2021.120588] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Revised: 10/29/2021] [Accepted: 11/03/2021] [Indexed: 06/13/2023]
Abstract
Fourier Transform Infra-Red (FTIR) spectroscopy provides structural information of prime importance to understand ions coordination to adsorbents. This consequently aids in the design of improved ion exchange materials and help in deriving the optimum adsorption conditions. In the present work, the adsorption mechanism of both U(VI)/Th(IV) and Ra(II)/Ba(II) radionuclides couples onto polystyrene-nano manganese dioxide (PS-NMO) composite is reported in relation to the effect of working solution pH. The separation of each radionuclide couple; i.e. U(VI)/Th(IV) and Ra(II)/Ba(II); could be effectively achieved at pH = 3 and pH = 1 respectively. The pH values not only determine the species of the respected elements that are mainly present in aqueous solution before applying the adsorbent, but it also alters the structure of the composite adsorbent. FTIR spectroscopy showed that Th(IV) formed inner sphere complexes and occupied the A site in the dioxide layer, while U(VI) formed outer sphere complexes on the surface of the composite. Spectra subtraction showed that some aromatic bands and vinyl C-H bands were split or shifted to lower wavenumbers with the loading of Ba(II). This was attributed to changes in the composite stereochemistry to accommodate Ba(II). The working solution pH could be the key in the separation process of both U(VI)/Th(IV) and Ra(II)/Ba(II) from their mixture, and FTIR spectroscopy stands as a useful technique to explain the difference between metal ions responses to adsorbants.
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Affiliation(s)
- Abdul G Al Lafi
- Department of Chemistry, Atomic Energy Commission, Damascus, P.O. Box 6091, Syrian Arab Republic.
| | - Jamal Al Abdullah
- Department of Protection and Safety, Atomic Energy Commission, Damascus, P.O. Box 6091, Syrian Arab Republic
| | - Yusr Amin
- Department of Protection and Safety, Atomic Energy Commission, Damascus, P.O. Box 6091, Syrian Arab Republic
| | - Yara Aljbai
- Department of Protection and Safety, Atomic Energy Commission, Damascus, P.O. Box 6091, Syrian Arab Republic
| | - Hussam Allham
- Department of Chemistry, Atomic Energy Commission, Damascus, P.O. Box 6091, Syrian Arab Republic
| | - Asmhan Obiad
- Department of Physics, Atomic Energy Commission, Damascus, P.O. Box 6091, Syrian Arab Republic
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3
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Kirby ME, Watson JS, Najorka J, Kenney JPL, Krevor S, Weiss DJ. Experimental study of pH effect on uranium (UVI) particle formation and transport through quartz sand in alkaline 0.1 M sodium chloride solutions. Colloids Surf A Physicochem Eng Asp 2020. [DOI: 10.1016/j.colsurfa.2019.124375] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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4
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The oxo exchange reaction mechanism of americyl(VI): a density functional theory study. J Radioanal Nucl Chem 2020. [DOI: 10.1007/s10967-020-07097-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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5
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Grabias E, Tarasiuk B, Dołęga A, Majdan M. New uranium( vi) and isothiouronium complexes: synthesis, crystal structure, spectroscopic characterization and a DFT study. CrystEngComm 2020. [DOI: 10.1039/d0ce00746c] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
U(vi) and isothiouronium salts create a strong charge-assisted network of hydrogen bonds and ionic interactions.
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Affiliation(s)
- Ewelina Grabias
- Faculty of Civil Engineering and Architecture
- Lublin University of Technology
- 20-618 Lublin
- Poland
- Faculty of Mathematics, Physics and Computer Science
| | - Bogdan Tarasiuk
- Faculty of Chemistry
- Maria Curie Skłodowska University
- 20-031 Lublin
- Poland
| | - Anna Dołęga
- Gdańsk University of Technology
- Faculty of Chemistry
- Department of Inorganic Chemistry
- 80-233 Gdańsk
- Poland
| | - Marek Majdan
- Faculty of Chemistry
- Maria Curie Skłodowska University
- 20-031 Lublin
- Poland
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6
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Wang Q, Zhu C, Huang X, Yang G. Abiotic reduction of uranium(VI) with humic acid at mineral surfaces: Competing mechanisms, ligand and substituent effects, and electronic structure and vibrational properties. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2019; 254:113110. [PMID: 31479808 DOI: 10.1016/j.envpol.2019.113110] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2019] [Revised: 07/30/2019] [Accepted: 08/23/2019] [Indexed: 06/10/2023]
Abstract
Abiotic reduction represents an attractive technology to control U(VI) contamination. In this work, an abiotic route of U(VI) reduction with humic acid at mineral surfaces is proposed and reaction mechanisms are addressed by periodic density functional theory calculations. Different influencing factors such as ligand effect, content of CO32- ligands and substituent effect are inspected. The coordination chemistry of uranyl(VI) surface complexes relies strongly on substrates and ligands, and the calculated results are in good agreements with experimental observations available. For the OH- ligand, two competitive mechanisms co-exist that respectively produce the U(IV) and U(V) species, and the former is significantly preferred because of lower energy barriers. Instead, the NO3- ligand leads to the formation of U(V) while for the Cl- ligand, the U(VI) surface complex remains very stable and is not likely to be reduced because of very high energy barriers. The U(V) and U(IV) complexes are the predominant products for low and high CO32- contents, respectively. Accordingly, the abiotic reduction processes with humic acid are efficient to manage U(VI) contamination and become preferred under basic conditions or at higher CO32- contents. The U(VI) reduction is further promoted by introduction of electron-donating rather than electron-withdrawing substituents to humic acid. Electronic structure analyses and vibrational frequency assignments are calculated for the various uranium surface complexes of the reduction processes, serving as a guide for future experimental and engineered studies. The molecular-level understanding given in this work offers an abiotic route for efficient reduction of U(VI) and remediation of U(VI)-contaminated sites at ambient conditions.
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Affiliation(s)
- Qian Wang
- College of Resources and Environment & Chongqing Key Laboratory of Soil Multi-scale Interfacial Process, Southwest University, Chongqing 400715, China
| | - Chang Zhu
- College of Resources and Environment & Chongqing Key Laboratory of Soil Multi-scale Interfacial Process, Southwest University, Chongqing 400715, China
| | - Xiaoxiao Huang
- College of Resources and Environment & Chongqing Key Laboratory of Soil Multi-scale Interfacial Process, Southwest University, Chongqing 400715, China
| | - Gang Yang
- College of Resources and Environment & Chongqing Key Laboratory of Soil Multi-scale Interfacial Process, Southwest University, Chongqing 400715, China.
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7
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Jian T, Dau PD, Shuh DK, Vasiliu M, Dixon DA, Peterson KA, Gibson JK. Activation of Water by Pentavalent Actinide Dioxide Cations: Characteristic Curium Revealed by a Reactivity Turn after Americium. Inorg Chem 2019; 58:14005-14014. [DOI: 10.1021/acs.inorgchem.9b01997] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Tian Jian
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Phuong Diem Dau
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - David K. Shuh
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Monica Vasiliu
- Department of Chemistry and Biochemistry, University of Alabama, Tuscaloosa, Alabama 35401, United States
| | - David A. Dixon
- Department of Chemistry and Biochemistry, University of Alabama, Tuscaloosa, Alabama 35401, United States
| | - Kirk A. Peterson
- Department of Chemistry, Washington State University, Pullman, Washington 99164, United States
| | - John K. Gibson
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
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8
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Philipp T, Shams Aldin Azzam S, Rossberg A, Huittinen N, Schmeide K, Stumpf T. U(VI) sorption on Ca-bentonite at (hyper)alkaline conditions - Spectroscopic investigations of retention mechanisms. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 676:469-481. [PMID: 31048176 DOI: 10.1016/j.scitotenv.2019.04.274] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/07/2019] [Revised: 03/15/2019] [Accepted: 04/18/2019] [Indexed: 06/09/2023]
Abstract
Environmental conditions in deep geological repositories for radioactive waste may involve high pH values due to the degradation of concrete. However, the U(VI) sorption at such (hyper)alkaline conditions is still poorly understood. In this study, batch sorption experiments with Ca-bentonite in the pH range 8-13 at different carbonate concentrations were combined with spectroscopic investigations in order to gain insight into the underlying retention mechanisms. It was found that U(VI) sorption strongly correlates with the aqueous U(VI) speciation determined by time-resolved laser-induced luminescence spectroscopy (TRLFS). Increasing retention with increasing pH was accompanied by a change in aqueous speciation from uranyl carbonates to uranyl hydroxides. The occurrence of luminescence line-narrowing and a decreased frequency of the symmetric stretch vibration, deduced from site-selective TRLFS, indicate the presence of adsorbed U(VI) surface complexes. X-ray absorption fine structure (EXAFS) spectroscopy confirms that surface precipitation does not contribute significantly to the removal of U(VI) from solution but that retention occurs through the formation of two non-equivalent U(VI)-complexes on the bentonite surface. The present study demonstrates that in alkaline environments, where often only precipitation processes are considered, adsorption can provide effective retention of U(VI), despite the anionic character of prevailing aqueous species.
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Affiliation(s)
- Thimo Philipp
- Helmholtz-Zentrum Dresden - Rossendorf, Institute of Resource Ecology, Bautzner Landstraße 400, 01328 Dresden, Germany.
| | - Salim Shams Aldin Azzam
- Helmholtz-Zentrum Dresden - Rossendorf, Institute of Resource Ecology, Bautzner Landstraße 400, 01328 Dresden, Germany.
| | - André Rossberg
- Helmholtz-Zentrum Dresden - Rossendorf, Institute of Resource Ecology, Bautzner Landstraße 400, 01328 Dresden, Germany; The Rossendorf Beamline at ESRF, F-38043 Grenoble, France.
| | - Nina Huittinen
- Helmholtz-Zentrum Dresden - Rossendorf, Institute of Resource Ecology, Bautzner Landstraße 400, 01328 Dresden, Germany.
| | - Katja Schmeide
- Helmholtz-Zentrum Dresden - Rossendorf, Institute of Resource Ecology, Bautzner Landstraße 400, 01328 Dresden, Germany.
| | - Thorsten Stumpf
- Helmholtz-Zentrum Dresden - Rossendorf, Institute of Resource Ecology, Bautzner Landstraße 400, 01328 Dresden, Germany.
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9
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Müller K, Foerstendorf H, Steudtner R, Tsushima S, Kumke MU, Lefèvre G, Rothe J, Mason H, Szabó Z, Yang P, Adam CKR, André R, Brennenstuhl K, Chiorescu I, Cho HM, Creff G, Coppin F, Dardenne K, Den Auwer C, Drobot B, Eidner S, Hess NJ, Kaden P, Kremleva A, Kretzschmar J, Krüger S, Platts JA, Panak PJ, Polly R, Powell BA, Rabung T, Redon R, Reiller PE, Rösch N, Rossberg A, Scheinost AC, Schimmelpfennig B, Schreckenbach G, Skerencak-Frech A, Sladkov V, Solari PL, Wang Z, Washton NM, Zhang X. Interdisciplinary Round-Robin Test on Molecular Spectroscopy of the U(VI) Acetate System. ACS OMEGA 2019; 4:8167-8177. [PMID: 31459906 PMCID: PMC6648335 DOI: 10.1021/acsomega.9b00164] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/17/2019] [Accepted: 04/10/2019] [Indexed: 06/10/2023]
Abstract
A comprehensive molecular analysis of a simple aqueous complexing system-U(VI) acetate-selected to be independently investigated by various spectroscopic (vibrational, luminescence, X-ray absorption, and nuclear magnetic resonance spectroscopy) and quantum chemical methods was achieved by an international round-robin test (RRT). Twenty laboratories from six different countries with a focus on actinide or geochemical research participated and contributed to this scientific endeavor. The outcomes of this RRT were considered on two levels of complexity: first, within each technical discipline, conformities as well as discrepancies of the results and their sources were evaluated. The raw data from the different experimental approaches were found to be generally consistent. In particular, for complex setups such as accelerator-based X-ray absorption spectroscopy, the agreement between the raw data was high. By contrast, luminescence spectroscopic data turned out to be strongly related to the chosen acquisition parameters. Second, the potentials and limitations of coupling various spectroscopic and theoretical approaches for the comprehensive study of actinide molecular complexes were assessed. Previous spectroscopic data from the literature were revised and the benchmark data on the U(VI) acetate system provided an unambiguous molecular interpretation based on the correlation of spectroscopic and theoretical results. The multimethodologic approach and the conclusions drawn address not only important aspects of actinide spectroscopy but particularly general aspects of modern molecular analytical chemistry.
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Affiliation(s)
- Katharina Müller
- Institute
of Resource Ecology, Helmholtz-Zentrum Dresden—Rossendorf, Bautzner Landstr. 400, D-01328 Dresden, Germany
| | - Harald Foerstendorf
- Institute
of Resource Ecology, Helmholtz-Zentrum Dresden—Rossendorf, Bautzner Landstr. 400, D-01328 Dresden, Germany
| | - Robin Steudtner
- Institute
of Resource Ecology, Helmholtz-Zentrum Dresden—Rossendorf, Bautzner Landstr. 400, D-01328 Dresden, Germany
| | - Satoru Tsushima
- Institute
of Resource Ecology, Helmholtz-Zentrum Dresden—Rossendorf, Bautzner Landstr. 400, D-01328 Dresden, Germany
- Institute
of Innovative Research, Tokyo Tech World Research Hub Initiative (WRHI), Tokyo Institute of Technology, 152-8550 Tokyo, Japan
| | - Michael U. Kumke
- Institute
of Chemistry, University of Potsdam, 14476 Potsdam, Germany
| | - Grégory Lefèvre
- Chimie
ParisTech, PSL Research University, CNRS, Institut de Recherche de
Chimie Paris (IRCP), F-75005 Paris, France
| | - Jörg Rothe
- Institute
for Nuclear Waste Disposal (KIT-INE), Karlsruhe
Institute of Technology, P.O. Box 3640, 76021 Karlsruhe, Germany
| | - Harris Mason
- Physical
and Life Science Directorate, Lawrence Livermore
National Laboratory, 7000 East Avenue, Livermore, 94550 California, United
States
| | - Zoltán Szabó
- School
of Chemistry, Organic Chemistry, Royal Institute
of Technology, S-100 44 Stockholm, Sweden
| | - Ping Yang
- Theoretical
Division, Physics and Chemistry of Materials, Los Alamos National Laboratory, Los Alamos, 87545 New Mexico, United States
| | - Christian K. R. Adam
- Institute
for Nuclear Waste Disposal (KIT-INE), Karlsruhe
Institute of Technology, P.O. Box 3640, 76021 Karlsruhe, Germany
| | - Rémi André
- Laboratoire
LIS-UMR CNRS 7020, Aix-Marseille Université, Université
de Toulon, 83041 Toulon Cedex 9, France
| | | | - Ion Chiorescu
- Department
of Chemistry, Technische Universität
München, Lichtenbergstr.
4, 85748 Garching, Germany
| | - Herman M. Cho
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, MS K2-57, Richland, 99352 Washington, United States
| | - Gaëlle Creff
- Université Côte d’Azur, CNRS, Institut
de Chimie
de Nice, UMR7272, 06108 Nice, France
| | - Frédéric Coppin
- Institut de Radioprotection et de Sûreté Nucléaire
(IRSN/PSE-ENV/SRTE/LR2T), CE Cadarache, BP3, 13115 Saint Paul lez Durance, France
| | - Kathy Dardenne
- Institute
for Nuclear Waste Disposal (KIT-INE), Karlsruhe
Institute of Technology, P.O. Box 3640, 76021 Karlsruhe, Germany
| | - Christophe Den Auwer
- Université Côte d’Azur, CNRS, Institut
de Chimie
de Nice, UMR7272, 06108 Nice, France
| | - Björn Drobot
- Institute
of Resource Ecology, Helmholtz-Zentrum Dresden—Rossendorf, Bautzner Landstr. 400, D-01328 Dresden, Germany
- Central Radionuclide Laboratory, Technische
Universität Dresden, Zellescher Weg 19, 01069 Dresden, Germany
| | - Sascha Eidner
- Institute
of Chemistry, University of Potsdam, 14476 Potsdam, Germany
| | - Nancy J. Hess
- Environmental
Molecular Sciences Laboratory, Pacific Northwest
National Laboratory, 3335 Innovation Blvd, Richland, 99354 Washington, United
States
| | - Peter Kaden
- Institute
of Resource Ecology, Helmholtz-Zentrum Dresden—Rossendorf, Bautzner Landstr. 400, D-01328 Dresden, Germany
- Institute
for Nuclear Waste Disposal (KIT-INE), Karlsruhe
Institute of Technology, P.O. Box 3640, 76021 Karlsruhe, Germany
| | - Alena Kremleva
- Department
of Chemistry, Technische Universität
München, Lichtenbergstr.
4, 85748 Garching, Germany
| | - Jerome Kretzschmar
- Institute
of Resource Ecology, Helmholtz-Zentrum Dresden—Rossendorf, Bautzner Landstr. 400, D-01328 Dresden, Germany
| | - Sven Krüger
- Department
of Chemistry, Technische Universität
München, Lichtenbergstr.
4, 85748 Garching, Germany
| | - James A. Platts
- School
of Chemistry, Cardiff University, Park Place, CF10 3AT Cardiff, U.K.
| | - Petra J. Panak
- Institute
for Nuclear Waste Disposal (KIT-INE), Karlsruhe
Institute of Technology, P.O. Box 3640, 76021 Karlsruhe, Germany
- Institute of Physical Chemistry, Heidelberg
University, Im Neuenheimer
Feld 253, D-69120 Heidelberg, Germany
| | - Robert Polly
- Institute
for Nuclear Waste Disposal (KIT-INE), Karlsruhe
Institute of Technology, P.O. Box 3640, 76021 Karlsruhe, Germany
| | - Brian A. Powell
- Department
of Environmental Engineering and Earth Sciences, Department
of Chemistry, Clemson University, 342 Computer Court, Anderson, 29625 South Carolina, United States
| | - Thomas Rabung
- Institute
for Nuclear Waste Disposal (KIT-INE), Karlsruhe
Institute of Technology, P.O. Box 3640, 76021 Karlsruhe, Germany
| | - Roland Redon
- Laboratoire
MIO—CS 60584, Université
de Toulon, 83041 Toulon cedex 9, France
| | - Pascal E. Reiller
- Den—Service d’Études Analytiques et de Réactivité
des Surfaces (SEARS), CEA, Université
Paris-Saclay, F 91191 Gif-sur-Yvette, France
| | - Notker Rösch
- Department
of Chemistry, Technische Universität
München, Lichtenbergstr.
4, 85748 Garching, Germany
- Institute of High Performance Computing, Agency for
Science, Technology and Research, 1 Fusionopolis Way, #16-16 Connexis, Singapore, Singapore 138632
| | - André Rossberg
- Institute
of Resource Ecology, Helmholtz-Zentrum Dresden—Rossendorf, Bautzner Landstr. 400, D-01328 Dresden, Germany
- The Rossendorf Beamline (BM20), European Synchrotron Radiation Facility, B.P. 220, F-38043 Grenoble Cedex, France
| | - Andreas C. Scheinost
- Institute
of Resource Ecology, Helmholtz-Zentrum Dresden—Rossendorf, Bautzner Landstr. 400, D-01328 Dresden, Germany
- The Rossendorf Beamline (BM20), European Synchrotron Radiation Facility, B.P. 220, F-38043 Grenoble Cedex, France
| | - Bernd Schimmelpfennig
- Institute
for Nuclear Waste Disposal (KIT-INE), Karlsruhe
Institute of Technology, P.O. Box 3640, 76021 Karlsruhe, Germany
| | - Georg Schreckenbach
- Department of Chemistry, University of
Manitoba, 144 Dysart Road, Winnipeg, Manitoba, R3T 2N2, Canada
| | - Andrej Skerencak-Frech
- Institute
for Nuclear Waste Disposal (KIT-INE), Karlsruhe
Institute of Technology, P.O. Box 3640, 76021 Karlsruhe, Germany
- Institute of Physical Chemistry, Heidelberg
University, Im Neuenheimer
Feld 253, D-69120 Heidelberg, Germany
| | - Vladimir Sladkov
- Institut de Physique Nucléaire
(IPN), CNRS/IN2P3,
Université Paris-Sud, 91406 Orsay, France
| | - Pier Lorenzo Solari
- Synchrotron SOLEIL, Ligne de lumière MARS, L’Orme
des Merisiers, Saint-Aubin,
BP 48, F-91192 Gif-sur-Yvette
Cedex, France
| | - Zheming Wang
- Environmental
Molecular Sciences Laboratory, Pacific Northwest
National Laboratory, 3335 Innovation Blvd, Richland, 99354 Washington, United
States
| | - Nancy M. Washton
- Pacific
Northwest National Laboratory, 902 Battelle Blvd, Richland, 99352 Washington, United States
| | - Xiaobin Zhang
- Department of Chemistry, University of
Manitoba, 144 Dysart Road, Winnipeg, Manitoba, R3T 2N2, Canada
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10
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Mahmoud ME, Khalifa MA, El Wakeel YM, Header MS, El-Sharkawy RM, Kumar S, Abdel-Fattah TM. A novel nanocomposite of Liquidambar styraciflua fruit biochar-crosslinked-nanosilica for uranyl removal from water. BIORESOURCE TECHNOLOGY 2019; 278:124-129. [PMID: 30684725 DOI: 10.1016/j.biortech.2019.01.052] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/28/2018] [Revised: 01/08/2019] [Accepted: 01/12/2019] [Indexed: 06/09/2023]
Abstract
Biochar adsorption has been protruded as a sustainable green and economic process for water remediation. This technology is facing high challenges in removing different pollutants, owning to the stable chemical and physical features of biochar. Therefore, a novel nanocomposite of Liquidambar styraciflua fruit biochar-crosslinked-nanosilica (BC-Gl-NSi) was synthesized and characterized (surface area = 60.754 m2 g-1 and particle size = 17.32-36.25 nm). The designed BC-Gl-NSi nanocomposite was explored for removal of uranyl ions by the batch adsorption technique under the influence of different factors including temperature, contact time, nanocomposite dosage, pH, uranyl ion concentration as well as co-existing ions. The adsorption process was principally confirmed to rely on the solution pH and reached 86.3% in pH 4.0. The results showed also that one-minute contact duration was sufficient to reach the maximum extraction of uranyl (30.0 mg L-1). Besides, [BC-Gl-NSi] exhibited excellent selectivity and good recovery of uranyl ions with other competing ions.
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Affiliation(s)
- Mohamed E Mahmoud
- Faculty of Sciences, Alexandria University, P.O. Box 426, Ibrahimia 21321, Alexandria, Egypt.
| | - Mohamed A Khalifa
- Faculty of Sciences, Alexandria University, P.O. Box 426, Ibrahimia 21321, Alexandria, Egypt
| | - Yasser M El Wakeel
- Faculty of Sciences, Alexandria University, P.O. Box 426, Ibrahimia 21321, Alexandria, Egypt
| | - Mennatllah S Header
- Faculty of Sciences, Alexandria University, P.O. Box 426, Ibrahimia 21321, Alexandria, Egypt
| | - Rehab M El-Sharkawy
- Chemistry Department, Faculty of Dentistry, Pharos University in Alexandria, Alexandria, Egypt
| | - Sandeep Kumar
- Department of Civil & Environmental Engineering, Old Dominion University, Norfolk, VA 23529, USA
| | - Tarek M Abdel-Fattah
- Faculty of Sciences, Alexandria University, P.O. Box 426, Ibrahimia 21321, Alexandria, Egypt; Applied Research Center Thomas Jefferson National Accelerator Facility, Department of Molecular Biology and Chemistry, Christopher Newport University, Newport News, VA 23606, USA
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11
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Kim J, Kim H, Kim WS, Um W. Dissolution of studtite [UO 2(O 2)(H 2O) 4] in various geochemical conditions. JOURNAL OF ENVIRONMENTAL RADIOACTIVITY 2018; 189:57-66. [PMID: 29604494 DOI: 10.1016/j.jenvrad.2018.01.010] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/13/2017] [Revised: 01/05/2018] [Accepted: 01/13/2018] [Indexed: 06/08/2023]
Abstract
This study determined the dissolution rate of studtite, (UO2)O2(H2O)4, which can be formed by reaction between H2O2 and UO22+ that leaks from spent nuclear fuel (SNF) in deep geological repositories. The batch dissolution experiments were conducted using synthesized studtite under different solution conditions with varying pHs and concentrations of HCO3- and [H2O2] in synthetic groundwater. The experimental results suggested that carbonate ligand and H2O2 in groundwater accelerated the dissolution of studtite and uranium (U) release. Above 10-5 M of H2O2 initial concentration, the released uranium concentration in solution decreased, possibly as a result of reprecipitation of studtite due to reaction between uranium and H2O2. The results will be useful to assess the comprehensive transport of uranium from both nuclear waste and SNF stored in deep geological repositories.
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Affiliation(s)
- Jungjin Kim
- Division of Advanced Nuclear Engineering (DANE), Pohang University of Science and Technology (POSTECH), 77 Cheongam-ro, Nam-Gu, Pohang, 790-784, Republic of Korea; Dept. of Radiation Protection & Radioactive Waste Safety, Korea Institute of Nuclear Safety (KINS), 62 Gwahak-ro, Yuseong-gu, Daejeon, 34142, Republic of Korea
| | - HyunJu Kim
- Division of Advanced Nuclear Engineering (DANE), Pohang University of Science and Technology (POSTECH), 77 Cheongam-ro, Nam-Gu, Pohang, 790-784, Republic of Korea
| | - Won-Seok Kim
- Division of Advanced Nuclear Engineering (DANE), Pohang University of Science and Technology (POSTECH), 77 Cheongam-ro, Nam-Gu, Pohang, 790-784, Republic of Korea
| | - Wooyong Um
- Division of Advanced Nuclear Engineering (DANE), Pohang University of Science and Technology (POSTECH), 77 Cheongam-ro, Nam-Gu, Pohang, 790-784, Republic of Korea; Division of Environmental Science and Engineering (DESE), Pohang University of Science and Technology (POSTECH), 77 Cheongam-ro, Nam-Gu, Pohang, 790-784, Republic of Korea.
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12
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Grabias E, Majdan M. A DFT study of uranyl hydroxyl complexes: structure and stability of trimers and tetramers. J Radioanal Nucl Chem 2017; 313:455-465. [PMID: 28804187 PMCID: PMC5533873 DOI: 10.1007/s10967-017-5305-z] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2017] [Indexed: 11/28/2022]
Abstract
A DFT study of U(VI) hydroxy complexes was performed with special attention paid to the [(UO2)3(OH)5(H2O)4–7]+ and [(UO2)4(OH)7(H2O)5–8]+ species. It was established that the ionicity of the U=O bond increased when moving from [(UO2)(H2O)5]2+, [(UO2)2(OH)(H2O)8]3+, [(UO2)2(OH)2(H2O)6]2+, [(UO2)3(OH)5(H2O)4–6]+ to [(UO2)4(OH)7(H2O)5–8]+ species. In both [(UO2)3(OH)5(H2O)4–6]+ and [(UO2)4(OH)7(H2O)5–8]+ complexes, the U=O bond was observed to have a range of different lengths which depended on the composition of the first coordination sphere of UO22+. The cyclic structures of trimeric complexes were somewhat more stable than their linear structures, which was probably due to the steric effect.
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Affiliation(s)
- Ewelina Grabias
- Institute of Mathematics, Maria Curie Skłodowska University, pl. Marii Curie Skłodowskiej 1, 20-031 Lublin, Poland
| | - Marek Majdan
- Faculty of Chemistry, Maria Curie Skłodowska University, pl. Marii Curie Skłodowskiej 2, 20-031 Lublin, Poland
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13
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14
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Synthesis, characterization, crystal structure, DNA and BSA binding, molecular docking and in vitro anticancer activities of a mononuclear dioxido-uranium(VI) complex derived from a tridentate ONO aroylhydrazone. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2016; 158:219-27. [DOI: 10.1016/j.jphotobiol.2016.03.001] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2015] [Revised: 02/29/2016] [Accepted: 03/01/2016] [Indexed: 11/29/2022]
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15
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Yang C, Pei S, Chen B, Ye L, Yu H, Hu S. Density functional theory investigations on the binding modes of amidoximes with uranyl ions. Dalton Trans 2016; 45:3120-9. [DOI: 10.1039/c5dt04645a] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
η1-O of tautomerized amidoximes and η1-O/η2-N–O of anionic amidoximes are all plausible coordination modes for amidoximes in ligating uranyl ions.
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Affiliation(s)
- Chuting Yang
- Department of Chemistry and Center for Atomic Engineering of Advanced Materials
- Anhui University
- Hefei
- China
- Institute of Nuclear Physics and Chemistry
| | - Shuqi Pei
- Department of Chemistry and Center for Atomic Engineering of Advanced Materials
- Anhui University
- Hefei
- China
- Department of Polymer Science and Engineering
| | - Baihua Chen
- Institute of Nuclear Physics and Chemistry
- CAEP
- Mianyang 621900
- China
| | - Lina Ye
- Department of Chemistry and Center for Atomic Engineering of Advanced Materials
- Anhui University
- Hefei
- China
| | - Haizhu Yu
- Department of Chemistry and Center for Atomic Engineering of Advanced Materials
- Anhui University
- Hefei
- China
| | - Sheng Hu
- Institute of Nuclear Physics and Chemistry
- CAEP
- Mianyang 621900
- China
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16
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Ren Y, Tang H, Shao L, Zhong J, Chu M, Yang R, Kong C. Theoretical study on complexation of U(vi) with ODA, IDA and TDA based on density functional theory. RSC Adv 2016. [DOI: 10.1039/c6ra05382c] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
Abstract
Precise structures of U(vi) complexes with ODA, IDA and TDA in different binding modes.
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Affiliation(s)
- Yiming Ren
- Institute of Materials
- China Academy of Engineering Physics
- Mianyang
- China
| | - Hao Tang
- Institute of Materials
- China Academy of Engineering Physics
- Mianyang
- China
| | - Lang Shao
- Institute of Materials
- China Academy of Engineering Physics
- Mianyang
- China
| | - Jingrong Zhong
- Institute of Materials
- China Academy of Engineering Physics
- Mianyang
- China
| | - Mingfu Chu
- Institute of Materials
- China Academy of Engineering Physics
- Mianyang
- China
| | - Ruizhu Yang
- Institute of Materials
- China Academy of Engineering Physics
- Mianyang
- China
| | - Chuipeng Kong
- State Key Laboratory of Theoretical and Computational Chemistry
- Institute of Theoretical Chemistry
- Jilin University
- Changchun
- China
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17
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Yang X, Chai Z, Wang D. Theoretical investigation on the mechanism and dynamics of oxo exchange of neptunyl(VI) hydroxide in aqueous solution. Phys Chem Chem Phys 2015; 17:7537-47. [PMID: 25706188 DOI: 10.1039/c4cp04586f] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Four types of reaction mechanisms for the oxo ligand exchange of monomeric and dimeric neptunyl(VI) hydroxide in aqueous solution were explored computationally using density functional theory (DFT) and ab initio classical molecular dynamics. The obtained results were compared with previous studies on the oxo exchange of uranyl hydroxide, as well as with experiments. It is found that the stable T-shaped [NpO3(OH)3](3-) intermediate is a key species for oxo exchange in the proton transfer in mononuclear Path I and binuclear Path IV, similar to the case of uranyl(VI) hydroxide. Path I is thought to be the preferred oxo exchange mechanism for neptunyl(VI) hydroxide in our calculations, due to the lower activation energy (22.7 and 13.1 kcal mol(-1) for ΔG(‡) and ΔH(‡), respectively) of the overall reaction. Path II via a cis-neptunyl structure assisted by a water molecule might be a competitive channel against Path I with a mononuclear mechanism, owing to a rapid dynamical process occurring in Path II. In Path IV with the binuclear mechanism, oxo exchange is accomplished via the interaction between [NpO2(OH)4](2-) and T-shaped [NpO3(OH)3](3-) with a low activation energy for the rate-determining step, however, the overall energy required to fulfill the reaction is slightly higher than that in mononuclear Path I, suggesting a possible binuclear process in the higher energy region. The chemical bonding evolution along the reaction pathways was discussed by using topological methodologies of the electron localization function (ELF).
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Affiliation(s)
- Xia Yang
- CAS Key Laboratory of Nuclear Radiation and Nuclear Energy Techniques, and Multidisciplinary Initiative Center, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China.
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18
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Drobot B, Steudtner R, Raff J, Geipel G, Brendler V, Tsushima S. Combining luminescence spectroscopy, parallel factor analysis and quantum chemistry to reveal metal speciation - a case study of uranyl(vi) hydrolysis. Chem Sci 2015; 6:964-972. [PMID: 29560182 PMCID: PMC5811152 DOI: 10.1039/c4sc02022g] [Citation(s) in RCA: 57] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2014] [Accepted: 10/24/2014] [Indexed: 12/17/2022] Open
Abstract
This study of aqueous metal speciation is an advanced combination of theoretical and experimental methods. Continuous wave (CW) and time-resolved laser-induced fluorescence spectroscopy (TRLFS) data of uranyl(vi) hydrolysis were analyzed using parallel factor analysis (PARAFAC). Distribution patterns of five major species were thereby derived under a fixed uranyl concentration (10-5 M) over a wide pH range from 2 to 11. UV (180 nm to 370 nm) excitation spectra were extracted for individual species. Time-dependent density functional theory (TD-DFT) calculations revealed ligand excitation (water, hydroxo, oxo) in this region and ligand-to-metal charge transfer (LMCT) responsible for luminescence. Thus excitation in the UV region is extreme ligand sensitive and specific. Combining findings from PARAFAC and DFT the [UO2(H2O)5]2+ cation (aquo complex 1 : 0) and four hydroxo complexes (1 : 1, 3 : 5, 3 : 7 and 1 : 3) were identified. The methodological concept used here is applicable to luminescent metals in general and thus enables acquisition of refined structural and thermodynamical data of lanthanide and actinide complexation.
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Affiliation(s)
- Björn Drobot
- Helmholtz Zentrum Dresden Rossendorf , Institute of Resource Ecology , Bautzner Landstraße 400 , 01328 Dresden , Germany . ;
| | - Robin Steudtner
- Helmholtz Zentrum Dresden Rossendorf , Institute of Resource Ecology , Bautzner Landstraße 400 , 01328 Dresden , Germany . ;
| | - Johannes Raff
- Helmholtz Zentrum Dresden Rossendorf , Institute of Resource Ecology , Bautzner Landstraße 400 , 01328 Dresden , Germany . ;
- Helmholtz Zentrum Dresden Rossendorf , Helmholtz Institute Freiberg for Resource Technology , Halsbrücker Straße 34 , 09599 Freiberg , Germany
| | - Gerhard Geipel
- Helmholtz Zentrum Dresden Rossendorf , Institute of Resource Ecology , Bautzner Landstraße 400 , 01328 Dresden , Germany . ;
| | - Vinzenz Brendler
- Helmholtz Zentrum Dresden Rossendorf , Institute of Resource Ecology , Bautzner Landstraße 400 , 01328 Dresden , Germany . ;
| | - Satoru Tsushima
- Helmholtz Zentrum Dresden Rossendorf , Institute of Resource Ecology , Bautzner Landstraße 400 , 01328 Dresden , Germany . ;
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19
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Yu HZ, Li C, Chen BH, Yang CT, Wang D, Fu Y, Hu S, Dang Z. Promising density functional theory methods for predicting the structures of uranyl complexes. RSC Adv 2014. [DOI: 10.1039/c4ra08264h] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
By examining the overall accuracy of different theoretical methods in predicting the U–X bond distances (of a series uranyl complexes), we found that both the global-hybrid meta-GGA functional of BB1K and the range-seperated LC-BLYP functional are fairly good (even better than the popular B3LYP method).
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Affiliation(s)
- Hai-Zhu Yu
- Department of Polymer Science and Engineering
- University of Science and Technology Beijing
- Beijing 100083, China
| | - Can Li
- Department of Polymer Science and Engineering
- University of Science and Technology Beijing
- Beijing 100083, China
| | - Bai-Hua Chen
- Institute of Nuclear Physics and Chemistry
- CAEP
- Mianyang, China
| | - Chu-Ting Yang
- Institute of Nuclear Physics and Chemistry
- CAEP
- Mianyang, China
| | - Dongrui Wang
- Department of Polymer Science and Engineering
- University of Science and Technology Beijing
- Beijing 100083, China
| | - Yao Fu
- Department of Chemistry
- University of Science and Technology of China
- Hefei 230026, China
| | - Sheng Hu
- Institute of Nuclear Physics and Chemistry
- CAEP
- Mianyang, China
| | - Zhimin Dang
- Department of Polymer Science and Engineering
- University of Science and Technology Beijing
- Beijing 100083, China
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