1
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Shohel M, Nyman M. Uranyl-Tc(VII)/Tc(V) hybrid clusters. Chem Commun (Camb) 2024; 60:5820-5823. [PMID: 38747178 DOI: 10.1039/d4cc01726a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/31/2024]
Abstract
Pertechnetate (99TcVIIO4-), reduced Tc, and actinides co-exist in spent nuclear fuel and legacy wastes. They co-transport in fuel reprocessing and waste disposal scenarios, necessitating an understanding of co-speciation. Here, we report five new molecular cluster/framework structures with pentameric and tetrameric uranyl building units decorated by TcO4-/ReO4- oxoanions, or fused with the reduced technetyl cation Tc(V)O. The latter, obtained by Tc auto-reduction (without the intentional introduction of a reducing environment), broadens the basis for Tc-reduction and the burgeoning polyoxometalate-like behavior of technetium.
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Affiliation(s)
- Mohammad Shohel
- Department of Chemistry, Oregon State University, Corvallis, OR-97331, USA.
| | - May Nyman
- Department of Chemistry, Oregon State University, Corvallis, OR-97331, USA.
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2
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Liu X, Xie Y, Li Y, Hao M, Chen Z, Yang H, Waterhouse GIN, Ma S, Wang X. Functional Carbon Capsules Supporting Ruthenium Nanoclusters for Efficient Electrocatalytic 99 TcO 4 - /ReO 4 - Removal from Acidic and Alkaline Nuclear Wastes. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2023; 10:e2303536. [PMID: 37691107 PMCID: PMC10602505 DOI: 10.1002/advs.202303536] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Revised: 07/10/2023] [Indexed: 09/12/2023]
Abstract
The selective removal of the β-emitting pertechnetate ion (99 TcO4 - ) from nuclear waste streams is technically challenging. Herein, a practical approach is proposed for the selective removal of 99 TcO4 - (or its surrogate ReO4 - ) under extreme conditions of high acidity, alkalinity, ionic strength, and radiation field. Hollow porous N-doped carbon capsules loaded with ruthenium clusters (Ru@HNCC) are first prepared, then modified with a cationic polymeric network (R) containing imidazolium-N+ units (Ru@HNCC-R) for selective 99 TcO4 - and ReO4 - binding. The Ru@HNCC-R capsules offer high binding affinities for 99 TcO4 - /ReO4 - under wide-ranging conditions. An electrochemical redox process then transforms adsorbed ReO4 - to bulk ReO3 , delivering record-high removal capacities, fast kinetics, and excellent long-term durability for removing ReO4 - (as a proxy for 99 TcO4 - ) in a 3 m HNO3 , simulated nuclear waste-Hanford melter recycle stream and an alkaline high-level waste stream (HLW) at the U.S. Savannah River Site (SRS). In situ Raman and X-ray absorption spectroscopy (XAS) analyses showed that adsorbed Re(VII) is electrocatalytically reduced on Ru sites to a Re(IV)O2 intermediate, which can then be re-oxidized to insoluble Re(VI)O3 for facile collection. This approach overcomes many of the challenges associated with the selective separation and removal of 99 TcO4 - /ReO4 - under extreme conditions, offering new vistas for nuclear waste management and environmental remediation.
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Affiliation(s)
- Xiaolu Liu
- College of Environmental Science and Engineering, North China Electric Power University, Beijing, 102206, P. R. China
| | - Yinghui Xie
- College of Environmental Science and Engineering, North China Electric Power University, Beijing, 102206, P. R. China
| | - Yang Li
- College of Environmental Science and Engineering, North China Electric Power University, Beijing, 102206, P. R. China
| | - Mengjie Hao
- College of Environmental Science and Engineering, North China Electric Power University, Beijing, 102206, P. R. China
| | - Zhongshan Chen
- College of Environmental Science and Engineering, North China Electric Power University, Beijing, 102206, P. R. China
| | - Hui Yang
- College of Environmental Science and Engineering, North China Electric Power University, Beijing, 102206, P. R. China
| | - Geoffrey I N Waterhouse
- MacDiarmid Institute for Advanced Materials and Nanotechnology, School of Chemical Sciences, The University of Auckland, Auckland, 1142, New Zealand
| | - Shengqian Ma
- Department of Chemistry, University of North Texas, Denton, TX, 76201, USA
| | - Xiangke Wang
- College of Environmental Science and Engineering, North China Electric Power University, Beijing, 102206, P. R. China
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3
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Ghosh R, Ghosh TK, Pramanik S, Musha Islam AS, Ghosh P. Superiority of the Supramolecular Halogen Bond Receptor over Its H-Bond Analogue toward the Efficient Extraction of Perrhenate from Water. ACS APPLIED MATERIALS & INTERFACES 2023; 15:25184-25192. [PMID: 36583941 DOI: 10.1021/acsami.2c19555] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
A halogen bond-based water-soluble tetrapodal iodoimidazolium receptor, (L-I)(4Br), exhibited a high degree of efficiency (∼96%) in extracting ReO4- from 100% aqueous medium within a wide range of concentrations and of pH values along with excellent reusability. The solid-state X-ray diffraction study showed the trapping of ReO4- by (L-I)(4Br) via the Re-O····I halogen bonding interaction. XPS studies also suggested the interaction between I and ReO4- through polarization of the electron density of I atoms by ReO4-. (L-I)(4Br) is found to be capable of retaining its high extraction efficiency in the presence of competing anions such as F-, Cl-, I-, SO42-, H2PO4-, CO32-, NO3-, BF4-, ClO4-, Cr2O72-, and a mixture of these anions. Interestingly, (L-I)(4Br) was found to be superior in ReO4- extraction as compared to its hydrogen-bond donor analogue, (L-H)(4Br), as confirmed by a series of control experiments and theoretical calculations. Our synthesized dipodal and tripodal halogen bond donor receptors and their H-analogues validated the superiority of these classes of supramolecular halogen bond donor receptors over their hydrogen-bond analogues. (L-I)(4Br) also showed superior practical applicability in terms of the removal of ReO4- at anion concentrations as low as ∼100 ppm, which was a major shortcoming of (L-H)(4Br).
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Affiliation(s)
- Rajib Ghosh
- School of Chemical Science, Indian Association for the Cultivation of Science, 2A & 2B Raja S. C. Mullick Road, Kolkata700032, India
| | - Tamal Kanti Ghosh
- School of Chemical Science, Indian Association for the Cultivation of Science, 2A & 2B Raja S. C. Mullick Road, Kolkata700032, India
| | - Sourav Pramanik
- School of Chemical Science, Indian Association for the Cultivation of Science, 2A & 2B Raja S. C. Mullick Road, Kolkata700032, India
| | - Abu Saleh Musha Islam
- School of Chemical Science, Indian Association for the Cultivation of Science, 2A & 2B Raja S. C. Mullick Road, Kolkata700032, India
| | - Pradyut Ghosh
- School of Chemical Science, Indian Association for the Cultivation of Science, 2A & 2B Raja S. C. Mullick Road, Kolkata700032, India
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4
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Śmiłowicz D, Eisenberg S, Ahn SH, Koller AJ, Lampkin PP, Boros E. Radiometallation and photo-triggered release of ready-to-inject radiopharmaceuticals from the solid phase. Chem Sci 2023; 14:5038-5050. [PMID: 37206398 PMCID: PMC10189872 DOI: 10.1039/d2sc06977f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2022] [Accepted: 04/15/2023] [Indexed: 05/21/2023] Open
Abstract
The efficient, large-scale synthesis of radiometallated radiopharmaceuticals represents an emerging clinical need which, to date, is inherently limited by time consuming, sequential procedures to conduct isotope separation, radiochemical labeling and purification prior to formulation for injection into the patient. In this work, we demonstrate that a solid-phase based, concerted separation and radiosynthesis strategy followed by photochemical release of radiotracer in biocompatible solvents can be employed to prepare ready-to-inject, clinical grade radiopharmaceuticals. Optimization of resin base, resin loading, and radiochemical labeling capacity are demonstrated with 67Ga and 64Cu radioisotopes using a short model peptide sequence and further validated using two peptide-based radiopharmaceuticals with clinical relevance, targeting the gastrin-releasing peptide and the prostate specific membrane antigen. We also demonstrate that the solid-phase approach enables separation of non-radioactive carrier ions Zn2+ and Ni2+ present at 105-fold excess over 67Ga and 64Cu by taking advantage of the superior Ga3+ and Cu2+ binding affinity of the solid-phase appended, chelator-functionalized peptide. Finally, a proof of concept radiolabeling and subsequent preclinical PET-CT study with the clinically employed positron emitter 68Ga successfully exemplifies that Solid Phase Radiometallation Photorelease (SPRP) allows the streamlined preparation of radiometallated radiopharmaceuticals by concerted, selective radiometal ion capture, radiolabeling and photorelease.
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Affiliation(s)
- Dariusz Śmiłowicz
- Department of Chemistry, Stony Brook University 100 Nicolls Road, Stony Brook NY 11794 USA
| | - Shawn Eisenberg
- Department of Chemistry, Stony Brook University 100 Nicolls Road, Stony Brook NY 11794 USA
| | - Shin Hye Ahn
- Department of Chemistry, Stony Brook University 100 Nicolls Road, Stony Brook NY 11794 USA
| | - Angus J Koller
- Department of Chemistry, Stony Brook University 100 Nicolls Road, Stony Brook NY 11794 USA
| | - Philip P Lampkin
- Department of Chemistry, University of Wisconsin-Madison Madison WI 53705 USA
| | - Eszter Boros
- Department of Chemistry, Stony Brook University 100 Nicolls Road, Stony Brook NY 11794 USA
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5
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Kang K, Zhang M, Li L, Lei L, Xiao C. Selective Sequestration of Perrhenate by Cationic Polymeric Networks Based on Elongated Pyridyl Ligands. Ind Eng Chem Res 2022. [DOI: 10.1021/acs.iecr.2c03257] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Kang Kang
- College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China
| | - Meiyu Zhang
- College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China
| | - Lei Li
- College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China
| | - Lecheng Lei
- College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China
- Institute of Zhejiang University-Quzhou, Quzhou 324000, China
| | - Chengliang Xiao
- College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China
- Institute of Zhejiang University-Quzhou, Quzhou 324000, China
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6
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Radivojevic Jovanovic I, Gallagher CMB, Salcedo R, Elshendidi H, Samson J, Drain CM, McGregor D, Lukens WW, Burton‐Pye BP, Francesconi LC. Reduction of Pertechnetate by Chemical and Photochemical Approaches and Incorporation of Tc(IV) into Titanium Dioxide. Eur J Inorg Chem 2022. [DOI: 10.1002/ejic.202200507] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Ivana Radivojevic Jovanovic
- Department of Chemistry New York City College of Technology of the City University of New York 285 Jay Street, Brooklyn NY, 11201 New York USA
| | - Colleen M. B. Gallagher
- Department of Chemistry Hunter College of the City University of New York 695 Park Avenue NY, 10065 New York USA
- Ph.D. Program in Chemistry Graduate Center of the City University of New York NY, 10016 New York USA
| | - Ramsey Salcedo
- Department of Chemistry Hunter College of the City University of New York 695 Park Avenue NY, 10065 New York USA
- Ph.D. Program in Chemistry Graduate Center of the City University of New York NY, 10016 New York USA
| | - Hossam Elshendidi
- Ph.D. Program in Chemistry Graduate Center of the City University of New York NY, 10016 New York USA
- Department of Chemistry Lehman College of the City University of New York 250 Bedford Park Boulevard West, Bronx NY, 10468 New York USA
| | - Jacopo Samson
- Department of Chemistry Hunter College of the City University of New York 695 Park Avenue NY, 10065 New York USA
| | - Charles M. Drain
- Department of Chemistry Hunter College of the City University of New York 695 Park Avenue NY, 10065 New York USA
- Ph.D. Program in Chemistry Graduate Center of the City University of New York NY, 10016 New York USA
| | - Donna McGregor
- Ph.D. Program in Chemistry Graduate Center of the City University of New York NY, 10016 New York USA
- Department of Chemistry Lehman College of the City University of New York 250 Bedford Park Boulevard West, Bronx NY, 10468 New York USA
| | - Wayne W. Lukens
- Chemical Sciences Division The Glenn T. Seaborg Center E. O. Lawrence Berkley National Laboratory (LBNL) One Cyclotron Road 94720 Berkeley California USA
| | - Benjamin P. Burton‐Pye
- Ph.D. Program in Chemistry Graduate Center of the City University of New York NY, 10016 New York USA
- Department of Chemistry Lehman College of the City University of New York 250 Bedford Park Boulevard West, Bronx NY, 10468 New York USA
| | - Lynn C. Francesconi
- Department of Chemistry Hunter College of the City University of New York 695 Park Avenue NY, 10065 New York USA
- Ph.D. Program in Chemistry Graduate Center of the City University of New York NY, 10016 New York USA
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7
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Yan RH, Cui WR, Jiang W, Huang J, Liang RP, Qiu JD. Rationally Designed Pyridinium Cationic Polymeric Network for Effective TcO4−/ReO4− Remediation. Chem Eng Sci 2022. [DOI: 10.1016/j.ces.2022.118403] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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8
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Zhang Z, Gao P, Montavon G, Chen Z, Wang D, Tan Z, Jin Q, Wu W, Wang J, Guo Z. Strengthened erosion resistance of compacted bentonite by layered double hydroxide: A new electrostatic interaction-based approach. CHEMOSPHERE 2022; 292:133402. [PMID: 34953877 DOI: 10.1016/j.chemosphere.2021.133402] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2021] [Revised: 12/17/2021] [Accepted: 12/21/2021] [Indexed: 06/14/2023]
Abstract
For the geological repository of high-level radioactive waste (HLW) built in granitic host rock,the control of buffer material (compacted bentonite) erosion and subsequent loss caused by groundwater in granite fissures is an unresolved problem of major concern. We propose here new insight into enhancing the erosion resistance of compacted bentonite by means of its electrostatic interaction with oppositely-charged layered double hydroxide (LDH). The interaction between bentonite and LDH was studied by dropwise addition of colloidal LDH into colloidal bentonite suspension, during which the variation in electrical conductivity, zeta potential and particle size proved a strong interaction between these two materials. Interestingly, in addition to their aggregation, intercalated structures of LDH and montmorillonite were found in the composite (BEN@LDH) by a combined characterization of X-ray diffraction (XRD) and high resolution transmission electron microscopy (HR-TEM), and were confirmed by density functional theory (DFT) calculation. Colloid generation of compacted BEN@LDH under ultrasonic conditions is negligible comparing with that of compacted bentonite, indicating a significantly higher erosion resistance. Besides, a small amount of LDH by mechanically mixing with bentonite (mass ratio 1:99) can also effectively improve the erosion resistance of compacted bentonite. Moreover, BEN@LDH displayed stronger retention performance towards U(VI) and Se(IV) than bentonite under near-neutral/weakly alkaline conditions. Our results indicate that LDH is a promising additive in compacted bentonite, and this approach may be extended to common geotechnical structures built with clays and soils.
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Affiliation(s)
- Zhen Zhang
- Frontiers Science Center for Rare Isotopes, Lanzhou University, Lanzhou, 730000, China; Radiochemistry Lab, School of Nuclear Science and Technology, Lanzhou University, Lanzhou, 730000, China
| | - Pengyuan Gao
- Frontiers Science Center for Rare Isotopes, Lanzhou University, Lanzhou, 730000, China; Radiochemistry Lab, School of Nuclear Science and Technology, Lanzhou University, Lanzhou, 730000, China
| | - Gilles Montavon
- Subatech, UMR6457, IN2P3/CNRS/IMT Atlantique/Université de Nantes, 4 Rue Alfred Kastler, F-44307, Nantes, France
| | - Zongyuan Chen
- Frontiers Science Center for Rare Isotopes, Lanzhou University, Lanzhou, 730000, China; Radiochemistry Lab, School of Nuclear Science and Technology, Lanzhou University, Lanzhou, 730000, China.
| | - Dongqi Wang
- School of Chemical Engineering, Dalian University of Technology, Dalian, 100049, China
| | - Zhaoyi Tan
- Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianyang, 621900, China.
| | - Qiang Jin
- Frontiers Science Center for Rare Isotopes, Lanzhou University, Lanzhou, 730000, China; Radiochemistry Lab, School of Nuclear Science and Technology, Lanzhou University, Lanzhou, 730000, China
| | - Wangsuo Wu
- Frontiers Science Center for Rare Isotopes, Lanzhou University, Lanzhou, 730000, China; Radiochemistry Lab, School of Nuclear Science and Technology, Lanzhou University, Lanzhou, 730000, China
| | - Ju Wang
- Beijing Research Institute of Uranium Geology, 10, Xiao-Guan-Dong-Li, Beijing, 100029, China
| | - Zhijun Guo
- Frontiers Science Center for Rare Isotopes, Lanzhou University, Lanzhou, 730000, China; Radiochemistry Lab, School of Nuclear Science and Technology, Lanzhou University, Lanzhou, 730000, China.
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9
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Kang K, Li L, Zhang M, Zhang X, Lei L, Xiao C. Constructing Cationic Metal-Organic Framework Materials Based on Pyrimidyl as a Functional Group for Perrhenate/Pertechnetate Sorption. Inorg Chem 2021; 60:16420-16428. [PMID: 34644066 DOI: 10.1021/acs.inorgchem.1c02257] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Cationic metal-organic framework (MOF) materials are widely used in the anion separation field, but there are few reports of pyrimidyl ligands as building units. In this work, three new cationic MOFs based on pyrimidyl as functional group ligands were synthesized for the removal of radioactive pertechnetate from aqueous solution. The pyrimidyl ligands were designed by incorporating pyrimidyl units into the skeletons of benzene, triphenylamine, and tetraphenylethylene, respectively. Taking advantage of multiple coordination sites of pyrimidyl groups, three cationic MOFs (ZJU-X11, ZJU-X12, and ZJU-X13) with diverse structures were solvothermally synthesized using silver ion as the metal node. Scanning electron microscopy-energy-dispersive spectroscopy mapping demonstrated that these three cationic MOFs could capture ReO4- via anion exchange, but the sorption capabilities were distinctly different. With 95% removal toward ReO4-, ZJU-X11 showed the strongest anion-exchange competence among the three MOFs. According to the results of batch experiments, ZJU-X11 could achieve sorption equilibrium within 10 min, remove 518 mg of ReO4- per 1 g of ZJU-X11, remove most of ReO4- after four recycles, and maintain satisfactory selectivity in the presence of excess competing anions, which is one of the best MOF materials for removing ReO4-/TcO4- among the three cationic MOFs. This work indicates that the pyrimidyl group is a promising multiple site to build versatile cationic MOFs.
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Affiliation(s)
- Kang Kang
- College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China
| | - Lei Li
- College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China
| | - Meiyu Zhang
- College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China
| | - Xingwang Zhang
- College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China
| | - Lecheng Lei
- College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China
| | - Chengliang Xiao
- College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China.,Institute of Zhejiang University-Quzhou, 78 Jiuhua Boulevard North, Quzhou 324000, China
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10
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Kuznetsov VV, Chotkowski M, Poineau F, Volkov MA, German K, Filatova EA. Technetium electrochemistry at the turn of the century. J Electroanal Chem (Lausanne) 2021. [DOI: 10.1016/j.jelechem.2021.115284] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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11
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Ghosh R, Ghosh TK, Ghosh P. Superiority of a polymeric scavenger over its hexapodal monomer towards efficient ReO 4- removal in water. Chem Commun (Camb) 2021; 57:5578-5581. [PMID: 33969858 DOI: 10.1039/d1cc01890f] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new imidazolium functionalized hexapodal polymeric receptor, [PHIm-Br], showed selective and efficient removal (>99%) of perrhenate (ReO4-), from 100% aqueous medium via solid-liquid extraction, which was 13% higher as compared to its monomeric analouge [HIm-Br]. Most importantly, [PHIm-Br] overcomes the drawback of [HIm-Br] in terms of removal of ReO4- at lower anion concentration of ∼100 ppm along with excellent radiation resistivity and reusability within a wide pH range, which implies its potential towards practical applications.
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Affiliation(s)
- Rajib Ghosh
- School of Chemical Science, Indian Association for the Cultivation of Science 2A & 2B Raja S. C, Mullick Road, Kolkata-700032, India.
| | - Tamal Kanti Ghosh
- School of Chemical Science, Indian Association for the Cultivation of Science 2A & 2B Raja S. C, Mullick Road, Kolkata-700032, India. and Environment Research Group, R&D, Tata Steel, Jamshedpur-831001, India
| | - Pradyut Ghosh
- School of Chemical Science, Indian Association for the Cultivation of Science 2A & 2B Raja S. C, Mullick Road, Kolkata-700032, India.
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12
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Radivojevic Jovanovic I, Gallagher CMB, Salcedo R, Lukens WW, Burton‐Pye BP, McGregor D, Francesconi LC. Strategies for the Photoreduction of Tc‐99 Pertechnetate to Low‐Valent Tc by Keggin Polyoxometalates. Eur J Inorg Chem 2020. [DOI: 10.1002/ejic.202000170] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Ivana Radivojevic Jovanovic
- Department of Chemistry, of the City University of New York New York City College of Technology 285 Jay Street 11201 Brooklyn NY USA
| | - Colleen M. B. Gallagher
- Hunter College of the City University of New York 695 Park Avenue 10065 New York NY USA
- Ph.D. Program in Chemistry Graduate Center of the City University of New York 10016 New York NY USA
| | - Ramsey Salcedo
- Hunter College of the City University of New York 695 Park Avenue 10065 New York NY USA
- Ph.D. Program in Chemistry Graduate Center of the City University of New York 10016 New York NY USA
- Lehman College of the City University of New York 250 Bedford Park Boulevard West 10468 Bronx NY USA
| | - Wayne W. Lukens
- Chemical Sciences Division The Glenn T. Seaborg Center E.O. Lawrence Berkeley National Laboratory (LBNL) One Cyclotron Road 94720 Berkeley California USA
| | - Benjamin P. Burton‐Pye
- Ph.D. Program in Chemistry Graduate Center of the City University of New York 10016 New York NY USA
- Lehman College of the City University of New York 250 Bedford Park Boulevard West 10468 Bronx NY USA
| | - Donna McGregor
- Ph.D. Program in Chemistry Graduate Center of the City University of New York 10016 New York NY USA
- Lehman College of the City University of New York 250 Bedford Park Boulevard West 10468 Bronx NY USA
| | - Lynn C. Francesconi
- Hunter College of the City University of New York 695 Park Avenue 10065 New York NY USA
- Ph.D. Program in Chemistry Graduate Center of the City University of New York 10016 New York NY USA
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13
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Liu ZW, Han BH. Evaluation of an Imidazolium-Based Porous Organic Polymer as Radioactive Waste Scavenger. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2020; 54:216-224. [PMID: 31825608 DOI: 10.1021/acs.est.9b05308] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
99TcO4- is highly radioactive and hazardous to both the environment and public health, meanwhile, it is quite challenging to have it efficiently removed. Herein an imidazolium-based cationic porous polymer (ImPOP-1) is evaluated for removal of TcO4-, with nonradioactive ReO4- as the surrogate for experimental operation. It is demonstrated that ImPOP-1 is a rare example that can integrate high adsorption capacity (610 mg g-1), fast kinetics (93.3% in 30 s), and high selectivity (72.9% in 1000 times excess of SO42- ions) in one material. The distribution coefficient Kd is among the top up to 3.2 × 105 mL g-1. ImPOP-1 also displays high adsorption performance over a wide range of pH values, and removal efficiency up to 64.3% in a highly alkaline solution (3 M NaOH). Recyclability experiments demonstrate that ImPOP-1 can be reused at least four times. The ImPOP-1 also retains a consistent adsorption capacity up to 609 ± 6.1 mg g-1 between three different batches of samples. In addition, a real-scenario experiment shows that ImPOP-1 can remove 97.4% of ReO4- in a simulated Hanford LAW stream.
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Affiliation(s)
- Zhi-Wei Liu
- CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing 100190, China
- Sino-Danish Center for Education and Research, Sino-Danish College, University of Chinese Academy of Sciences, Beijing 100190, China
| | - Bao-Hang Han
- CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing 100190, China
- Sino-Danish Center for Education and Research, Sino-Danish College, University of Chinese Academy of Sciences, Beijing 100190, China
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14
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Ghosh R, Ghosh TK, Ghosh P. Selective and efficient removal of perrhenate by an imidazolium based hexapodal receptor in water medium. Dalton Trans 2020; 49:3093-3097. [DOI: 10.1039/d0dt00365d] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This work reports a new cationic imidazolium based hexapodal receptor, [L.6Br], for selective and efficient removal of perrhenate (ReO4−) as [L.6ReO4] from 100% aqueous medium via extraction through precipitation.
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Affiliation(s)
- Rajib Ghosh
- School of Chemical Science
- Indian Association for the Cultivation of Science
- Kolkata – 700032
- India
| | - Tamal Kanti Ghosh
- School of Chemical Science
- Indian Association for the Cultivation of Science
- Kolkata – 700032
- India
| | - Pradyut Ghosh
- School of Chemical Science
- Indian Association for the Cultivation of Science
- Kolkata – 700032
- India
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15
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Ji H, Zhu Y, Duan J, Liu W, Zhao D. Reductive immobilization and long-term remobilization of radioactive pertechnetate using bio-macromolecules stabilized zero valent iron nanoparticles. CHINESE CHEM LETT 2019. [DOI: 10.1016/j.cclet.2019.06.004] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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16
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Burton‐Pye BP, Dembowski M, Lukens WW, Cruz A, Althour A, Lopez GE, Salcedo R, Gallagher CMB, McGregor D, Francesconi LC. Synthesis and Characterization of Non‐Aqueous [Tc
X
M‐PW
11
O
39
]
n
–
with M = O, N: Comparing Tc
V
and Tc
VI
in Metal Oxide Matrices. Eur J Inorg Chem 2019. [DOI: 10.1002/ejic.201900864] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Benjamin P. Burton‐Pye
- Lehman College of the City University of New York 250 Bedford Park Boulevard West Bronx NY 10468 USA
- Ph.D. Program in Chemistry Graduate Center of the City University of New York New York NY 10016 USA
| | - Mateusz Dembowski
- Hunter College of the City University of New York 695 Park Avenue New York NY 10065 USA
| | - Wayne W. Lukens
- Chemical Sciences Division The Glenn T. Seaborg Center E.O. Lawrence Berkeley National Laboratory (LBNL) One Cyclotron Road Berkeley California 94720 USA
| | - Anthony Cruz
- Lehman College of the City University of New York 250 Bedford Park Boulevard West Bronx NY 10468 USA
- Ph.D. Program in Chemistry Graduate Center of the City University of New York New York NY 10016 USA
| | - Alrasheed Althour
- Lehman College of the City University of New York 250 Bedford Park Boulevard West Bronx NY 10468 USA
| | - Gustavo E. Lopez
- Lehman College of the City University of New York 250 Bedford Park Boulevard West Bronx NY 10468 USA
- Ph.D. Program in Chemistry Graduate Center of the City University of New York New York NY 10016 USA
| | - Ramsey Salcedo
- Lehman College of the City University of New York 250 Bedford Park Boulevard West Bronx NY 10468 USA
- Ph.D. Program in Chemistry Graduate Center of the City University of New York New York NY 10016 USA
- Hunter College of the City University of New York 695 Park Avenue New York NY 10065 USA
| | - Colleen M. B. Gallagher
- Ph.D. Program in Chemistry Graduate Center of the City University of New York New York NY 10016 USA
- Hunter College of the City University of New York 695 Park Avenue New York NY 10065 USA
| | - Donna McGregor
- Lehman College of the City University of New York 250 Bedford Park Boulevard West Bronx NY 10468 USA
- Ph.D. Program in Chemistry Graduate Center of the City University of New York New York NY 10016 USA
| | - Lynn C. Francesconi
- Ph.D. Program in Chemistry Graduate Center of the City University of New York New York NY 10016 USA
- Hunter College of the City University of New York 695 Park Avenue New York NY 10065 USA
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17
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Deng H, Li ZJ, Wang XC, Wang L, Liu K, Yuan LY, Chang ZY, Gibson JK, Zheng LR, Chai ZF, Shi WQ. Efficient Photocatalytic Reduction of Aqueous Perrhenate and Pertechnetate. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2019; 53:10917-10925. [PMID: 31432660 DOI: 10.1021/acs.est.9b03199] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The pertechnetate anion (99TcO4-) is a long-lived radioactive species that is soluble in aqueous solution, in contrast to sparingly soluble 99TcO2. Results are reported for photocatalytic reduction and removal of perrhenate (ReO4-), a nonradioactive surrogate for 99TcO4-, using a TiO2 (P25) nanoparticle suspension in formic acid under UV-visible irradiation. Re(VII) removal up to 98% was achieved at pH = 3 under air or N2. The proposed mechanism is Re(VII)/Re(IV) reduction mediated by reducing radicals (·CO2-) from oxidation of formic acid, not direct reduction by photogenerated electrons of TiO2. Recycling results indicate that photocatalytic reduction of ReO4- exhibits excellent regeneration and high activity with >95% removal even after five cycles. 99Tc(VII) is more easily reduced than Re(VII) in the presence of NO3- with very slow redissolution of reduced 99Tc. This study presents a novel method for the removal of ReO4-/99TcO4- from aqueous solution, with potential application for deep geological disposal.
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Affiliation(s)
- Hao Deng
- Department of Radiochemistry , China Institute of Atomic Energy , Beijing 102413 , China
| | | | | | | | | | | | - Zhi-Yuan Chang
- Department of Radiochemistry , China Institute of Atomic Energy , Beijing 102413 , China
| | - John K Gibson
- Chemical Sciences Division , Lawrence Berkeley National Laboratory (LBNL) , Berkeley , California 94720 , United States
| | | | - Zhi-Fang Chai
- Engineering Laboratory of Advanced Energy Materials , Ningbo Institute of Industrial Technology, Chinese Academy of Sciences , Ningbo , Zhejiang 315201 , China
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18
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Wang L, Song H, Yuan L, Li Z, Zhang P, Gibson JK, Zheng L, Wang H, Chai Z, Shi W. Effective Removal of Anionic Re(VII) by Surface-Modified Ti 2CT x MXene Nanocomposites: Implications for Tc(VII) Sequestration. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2019; 53:3739-3747. [PMID: 30843686 DOI: 10.1021/acs.est.8b07083] [Citation(s) in RCA: 76] [Impact Index Per Article: 15.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Environmental contamination by 99Tc(VII) from radioactive wastewater streams is of particular concern due to the long half-life of 99Tc and high mobility of pertechnetate. Herein, we report a novel MXene-polyelectrolyte nanocomposite with three-dimensional networks for enhanced removal of perrhenate, which is pertechnetate simulant. The introduction of poly(diallyldimethylammonium chloride) (PDDA) regulates the surface charge and improves the stability of Ti2CT x nanosheet, resulting in Re(VII) removal capacity of up to 363 mg g-1, and fast sorption kinetics. The Ti2CT x/PDDA nanocomposite furthermore exhibits good selectivity for ReO4- when competing anions (such as Cl- and SO42-) coexist at a concentration of 1800 times. The immobilization mechanism was confirmed as a sorption-reduction process by batch sorption experiments and X-ray photoelectron spectroscopy. The pH-dependent reducing activity of Ti2CT x/PDDA nanocomposite toward Re(VII) was clarified by X-ray absorption spectroscopy. As the pH increases, the local environment gradually changes from octahedral-coordinated Re(IV) to tetrahedral-coordinated Re(VII). The overall results suggest that Ti2CT x/PDDA nanocomposite may be a promising candidate for efficient elimination of Tc contamination. The reported surface modification strategy might result in applications of MXene-based materials in environmental remediation of other oxidized anion pollutants.
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Affiliation(s)
- Lin Wang
- Laboratory of Nuclear Energy Chemistry and Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics , Chinese Academy of Sciences , Beijing 100049 , China
| | - Huan Song
- Laboratory of Nuclear Energy Chemistry and Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics , Chinese Academy of Sciences , Beijing 100049 , China
- School of Chemistry and Chemical Engineering and Hunan Key Laboratory for the Design and Application of Actinide Complexes , University of South China , Hengyang 421001 , China
| | - Liyong Yuan
- Laboratory of Nuclear Energy Chemistry and Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics , Chinese Academy of Sciences , Beijing 100049 , China
| | - Zijie Li
- Laboratory of Nuclear Energy Chemistry and Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics , Chinese Academy of Sciences , Beijing 100049 , China
| | - Peng Zhang
- Laboratory of Nuclear Energy Chemistry and Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics , Chinese Academy of Sciences , Beijing 100049 , China
| | - John K Gibson
- Chemical Sciences Division , Lawrence Berkeley National Laboratory (LBNL) , Berkeley , California 94720 , United States
| | - Lirong Zheng
- Beijing Synchrotron Radiation Facility, Institute of High Energy Physics , Chinese Academy of Sciences , Beijing 100049 , China
| | - Hongqing Wang
- School of Chemistry and Chemical Engineering and Hunan Key Laboratory for the Design and Application of Actinide Complexes , University of South China , Hengyang 421001 , China
| | - Zhifang Chai
- Laboratory of Nuclear Energy Chemistry and Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics , Chinese Academy of Sciences , Beijing 100049 , China
- Engineering Laboratory of Advanced Energy Materials , Ningbo Institute of Industrial Technology, Chinese Academy of Sciences , Ningbo , Zhejiang 315201 , China
| | - Weiqun Shi
- Laboratory of Nuclear Energy Chemistry and Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics , Chinese Academy of Sciences , Beijing 100049 , China
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19
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Ji H, Zhu Y, Liu W, Bozack MJ, Qian T, Zhao D. Sequestration of pertechnetate using carboxymethyl cellulose stabilized FeS nanoparticles: Effectiveness and mechanisms. Colloids Surf A Physicochem Eng Asp 2019. [DOI: 10.1016/j.colsurfa.2018.10.048] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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20
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Intermediate oxidation states of technetium in concentrated sulfuric acid solutions. J Electroanal Chem (Lausanne) 2018. [DOI: 10.1016/j.jelechem.2018.02.042] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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21
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Zhu L, Sheng D, Xu C, Dai X, Silver MA, Li J, Li P, Wang Y, Wang Y, Chen L, Xiao C, Chen J, Zhou R, Zhang C, Farha OK, Chai Z, Albrecht-Schmitt TE, Wang S. Identifying the Recognition Site for Selective Trapping of 99TcO4– in a Hydrolytically Stable and Radiation Resistant Cationic Metal–Organic Framework. J Am Chem Soc 2017; 139:14873-14876. [DOI: 10.1021/jacs.7b08632] [Citation(s) in RCA: 291] [Impact Index Per Article: 41.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Lin Zhu
- School
for Radiological and Interdisciplinary Sciences (RAD-X) and Collaborative
Innovation Center of Radiation Medicine of Jiangsu Higher Education
Institutions, Soochow University, Suzhou 215123, China
| | - Daopeng Sheng
- School
for Radiological and Interdisciplinary Sciences (RAD-X) and Collaborative
Innovation Center of Radiation Medicine of Jiangsu Higher Education
Institutions, Soochow University, Suzhou 215123, China
| | - Chao Xu
- Collaborative
Innovation Center of Advanced Nuclear Energy Technology, Institute
of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084, China
| | - Xing Dai
- School
for Radiological and Interdisciplinary Sciences (RAD-X) and Collaborative
Innovation Center of Radiation Medicine of Jiangsu Higher Education
Institutions, Soochow University, Suzhou 215123, China
| | - Mark A. Silver
- School
for Radiological and Interdisciplinary Sciences (RAD-X) and Collaborative
Innovation Center of Radiation Medicine of Jiangsu Higher Education
Institutions, Soochow University, Suzhou 215123, China
| | - Jie Li
- School
for Radiological and Interdisciplinary Sciences (RAD-X) and Collaborative
Innovation Center of Radiation Medicine of Jiangsu Higher Education
Institutions, Soochow University, Suzhou 215123, China
| | - Peng Li
- Department
of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Yaxing Wang
- School
for Radiological and Interdisciplinary Sciences (RAD-X) and Collaborative
Innovation Center of Radiation Medicine of Jiangsu Higher Education
Institutions, Soochow University, Suzhou 215123, China
| | - Yanlong Wang
- School
for Radiological and Interdisciplinary Sciences (RAD-X) and Collaborative
Innovation Center of Radiation Medicine of Jiangsu Higher Education
Institutions, Soochow University, Suzhou 215123, China
| | - Lanhua Chen
- School
for Radiological and Interdisciplinary Sciences (RAD-X) and Collaborative
Innovation Center of Radiation Medicine of Jiangsu Higher Education
Institutions, Soochow University, Suzhou 215123, China
| | - Chengliang Xiao
- School
for Radiological and Interdisciplinary Sciences (RAD-X) and Collaborative
Innovation Center of Radiation Medicine of Jiangsu Higher Education
Institutions, Soochow University, Suzhou 215123, China
| | - Jing Chen
- Collaborative
Innovation Center of Advanced Nuclear Energy Technology, Institute
of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084, China
| | - Ruhong Zhou
- School
for Radiological and Interdisciplinary Sciences (RAD-X) and Collaborative
Innovation Center of Radiation Medicine of Jiangsu Higher Education
Institutions, Soochow University, Suzhou 215123, China
| | - Chao Zhang
- School
of Materials Science and Engineering, Anhui University of Science and Technology, Huainan 232001, China
| | - Omar K. Farha
- Department
of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
- Department
of Chemistry, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Zhifang Chai
- School
for Radiological and Interdisciplinary Sciences (RAD-X) and Collaborative
Innovation Center of Radiation Medicine of Jiangsu Higher Education
Institutions, Soochow University, Suzhou 215123, China
| | - Thomas E. Albrecht-Schmitt
- Department
of Chemistry and Biochemistry, Florida State University, 95 Chieftain
Way, Tallahassee, Florida 32306, United States
| | - Shuao Wang
- School
for Radiological and Interdisciplinary Sciences (RAD-X) and Collaborative
Innovation Center of Radiation Medicine of Jiangsu Higher Education
Institutions, Soochow University, Suzhou 215123, China
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22
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2D-architecture via self-assembly of the novel sandwich-type polyoxometalate [Zn 3.2 Bi 0.8 (B-α-ZnW 9 O 34 ) 2 ] 15−. Polyhedron 2017. [DOI: 10.1016/j.poly.2017.05.054] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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23
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Huo L, Xie W, Qian T, Guan X, Zhao D. Reductive immobilization of pertechnetate in soil and groundwater using synthetic pyrite nanoparticles. CHEMOSPHERE 2017; 174:456-465. [PMID: 28187392 DOI: 10.1016/j.chemosphere.2017.02.018] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2016] [Revised: 01/27/2017] [Accepted: 02/03/2017] [Indexed: 06/06/2023]
Abstract
Radioactive technetium (99Tc) is of intense concern because of its toxicity and high mobility in the environment. Reduction of Tc(VII) to Tc(IV) decreases the mobility and availability of technetium in soil and groundwater. In this study, pyrite nanoparticles (FeS2) were synthesized, characterized and tested for immobilizing/removing 99Tc(VII) in soil and groundwater through batch and column experiments. Influences of particle dosage, dissolved organic matter (DOM), and pH on the reductive immobilization kinetics were examined. At a dosage of 0.28 g/L as Fe, the pyrite nanoparticles were able to rapidly and completely remove 4.88 × 10-7 M of Tc(VII) by converting it to insoluble Tc(IV), with a retarded first-order rate constant of 0.30 h-1. The presence of high concentrations of DOM only moderately inhibited the reduction effectiveness, and acidic pH was more favorable for Tc(VII) reduction. Column experiments showed that embedding a 0.8 cm pyrite layer of the material in a soil bed, simulating a permeable reactive barrier, was able to retard technetium transport 710 times more than a model sandy soil. The results demonstrated that the pyrite particles may serve as a long-lasting reactive material to remediate Tc-contaminated soil, groundwater and solid wastes.
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Affiliation(s)
- Lijuan Huo
- College of Environment and Safety, Taiyuan University of Science and Technology, Taiyuan, Shanxi, 030024, China; Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Wenbo Xie
- Environmental Engineering Program, Department of Civil Engineering, 238 Harbert Engineering Center, Auburn University, Auburn, AL 36849, USA
| | - Tianwei Qian
- College of Environment and Safety, Taiyuan University of Science and Technology, Taiyuan, Shanxi, 030024, China
| | - Xiaohong Guan
- State Key Laboratory of Pollution Control and Resources Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China
| | - Dongye Zhao
- College of Environment and Safety, Taiyuan University of Science and Technology, Taiyuan, Shanxi, 030024, China; Environmental Engineering Program, Department of Civil Engineering, 238 Harbert Engineering Center, Auburn University, Auburn, AL 36849, USA.
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24
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Floris B, Galloni P, Sabuzi F, Conte V. Metal systems as tools for soil remediation. Inorganica Chim Acta 2017. [DOI: 10.1016/j.ica.2016.04.003] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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25
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Li J, Chen C, Zhang R, Wang X. Reductive immobilization of Re(VII) by graphene modified nanoscale zero-valent iron particles using a plasma technique. Sci China Chem 2015. [DOI: 10.1007/s11426-015-5452-4] [Citation(s) in RCA: 86] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/25/2023]
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26
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27
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Affiliation(s)
- Joseph Sherma
- a Department of Chemistry , Lafayette College , Easton , Pennsylvania , USA
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28
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Li D, Kaplan DI, Knox AS, Crapse KP, Diprete DP. Aqueous (99)Tc, (129)I and (137)Cs removal from contaminated groundwater and sediments using highly effective low-cost sorbents. JOURNAL OF ENVIRONMENTAL RADIOACTIVITY 2014; 136:56-63. [PMID: 24905141 DOI: 10.1016/j.jenvrad.2014.05.010] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2014] [Revised: 05/13/2014] [Accepted: 05/14/2014] [Indexed: 06/03/2023]
Abstract
Technetium-99 ((99)Tc), iodine-129 ((129)I), and cesium-137 ((137)Cs) are among the key risk-drivers for environmental cleanup. Immobilizing these radionuclides, especially TcO4(-) and I(-), has been challenging. TcO4(-) and I(-) bind very weakly to most sediments, such that distribution coefficients (Kd values; radionuclide concentration ratio of solids to liquids) are typically <2 mL/g; while Cs sorbs somewhat more strongly (Kd ∼ 50 mL/g). The objective of this laboratory study was to evaluate 13 cost-effective sorbents for TcO4(-), I(-), and Cs(+) uptake from contaminated groundwater and sediments. Two organoclays sorbed large amounts of TcO4(-) (Kd > 1 × 10(5) mL/g), I(-) (Kd ≥ 1 × 10(4) mL/g), and Cs(+) (Kd > 1 × 10(3) mL/g) and also demonstrated a largely irreversible binding of the radionuclides. Activated carbon GAC 830 was effective at sorbing TcO4(-) (Kd > 1 × 10(5) mL/g) and I(-) (Kd = 6.9 × 10(3) mL/g), while a surfactant modified chabazite was effective at sorbing TcO4(-) (Kd > 2.5 × 10(4) mL/g) and Cs(+) (Kd > 6.5 × 10(3) mL/g). Several sorbents were effective for only one radionuclide, e.g., modified zeolite Y had TcO4(-)Kd > 2.3 × 10(5) mL/g, AgS had I(-) Kd = 2.5 × 10(4) mL/g, and illite, chabazite, surfactant modified clinoptilolite, and thiol-SAMMS had Cs(+)Kd > 10(3) mL/g. These low-cost and high capacity sorbents may provide a sustainable solution for environmental remediation.
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Affiliation(s)
- Dien Li
- Savannah River National Laboratory, Aiken, SC 29808, United States.
| | - Daniel I Kaplan
- Savannah River National Laboratory, Aiken, SC 29808, United States
| | - Anna S Knox
- Savannah River National Laboratory, Aiken, SC 29808, United States
| | | | - David P Diprete
- Savannah River National Laboratory, Aiken, SC 29808, United States
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29
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Vonci M, Akhlaghi Bagherjeri F, Hall PD, Gable RW, Zavras A, O'Hair RAJ, Liu Y, Zhang J, Field MR, Taylor MB, Du Plessis J, Bryant G, Riley M, Sorace L, Aparicio PA, López X, Poblet JM, Ritchie C, Boskovic C. Modular Molecules: Site‐Selective Metal Substitution, Photoreduction, and Chirality in Polyoxometalate Hybrids. Chemistry 2014; 20:14102-11. [DOI: 10.1002/chem.201403222] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2014] [Indexed: 11/08/2022]
Affiliation(s)
- Michele Vonci
- School of Chemistry, University of Melbourne, Parkville, 3010 (Australia)
| | | | - Peter D. Hall
- School of Chemistry, University of Melbourne, Parkville, 3010 (Australia)
| | - Robert W. Gable
- School of Chemistry, University of Melbourne, Parkville, 3010 (Australia)
| | - Athanasios Zavras
- School of Chemistry, University of Melbourne, Parkville, 3010 (Australia)
| | | | - Yuping Liu
- School of Chemistry, Monash University, Clayton, 3800 (Australia)
| | - Jie Zhang
- School of Chemistry, Monash University, Clayton, 3800 (Australia)
| | - Matthew R. Field
- School of Applied Sciences, RMIT University, Melbourne, 3001 (Australia)
| | - Matthew B. Taylor
- School of Applied Sciences, RMIT University, Melbourne, 3001 (Australia)
| | - Johan Du Plessis
- School of Applied Sciences, RMIT University, Melbourne, 3001 (Australia)
| | - Gary Bryant
- School of Applied Sciences, RMIT University, Melbourne, 3001 (Australia)
| | - Mark Riley
- School of Chemistry and Molecular BioScience, University of Queensland, St. Lucia, 4072 (Australia)
| | - Lorenzo Sorace
- UdR INSTM & Department of Chemistry “U. Schiff”, University of Florence, 50019 Sesto Fiorentino (Italy)
| | - Pablo A. Aparicio
- Departament de Química Física i Inorgànica, Universitat Rovira i Virgili, Marcel⋅lí Domingo s/n, 43007 Tarragona (Spain)
| | - Xavier López
- Departament de Química Física i Inorgànica, Universitat Rovira i Virgili, Marcel⋅lí Domingo s/n, 43007 Tarragona (Spain)
| | - Josep M. Poblet
- Departament de Química Física i Inorgànica, Universitat Rovira i Virgili, Marcel⋅lí Domingo s/n, 43007 Tarragona (Spain)
| | - Chris Ritchie
- School of Chemistry, University of Melbourne, Parkville, 3010 (Australia)
| | - Colette Boskovic
- School of Chemistry, University of Melbourne, Parkville, 3010 (Australia)
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30
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Abstract
AbstractThe most important advances in planar chromatography published between November 1, 2011 and November 1, 2013 are reviewed in this paper. Included are an introduction to the current status of the field; student experiments, books, and reviews; theory and fundamental studies; apparatus and techniques for sample preparation and TLC separations (sample application and plate development with the mobile phase); detection and identification of separated zones (chemical and biological detection, TLC/mass spectrometry, and TLC coupled with other spectrometric methods); techniques and instruments for quantitative analysis; preparative layer chromatography; and thin layer radiochromatography. Numerous applications to a great number of compound types and sample matrices are presented in all sections of the review.
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31
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McGregor D, Burton‐Pye BP, Lukens WW, Howell RC, Francesconi LC. Insights into Stabilization of the
99
Tc
V
O Core for Synthesis of
99
Tc
V
O Compounds. Eur J Inorg Chem 2014. [DOI: 10.1002/ejic.201301034] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Donna McGregor
- Department of Chemistry, Hunter College of the City University of New York, 695 Park Avenue, New York, NY 10065, USA, http://www.hunter.cuny.edu
- Department of Chemistry, Graduate Center of the City University of New York, New York, NY 10016, USA
| | - Benjamin P. Burton‐Pye
- Department of Chemistry, Hunter College of the City University of New York, 695 Park Avenue, New York, NY 10065, USA, http://www.hunter.cuny.edu
| | - Wayne W. Lukens
- Actinide Chemistry Group, Chemical Sciences Division, Lawrence Berkeley National Laboratory (LBNL) Berkeley, CA 94720, USA
| | - Robertha C. Howell
- Department of Chemistry, Hunter College of the City University of New York, 695 Park Avenue, New York, NY 10065, USA, http://www.hunter.cuny.edu
| | - Lynn C. Francesconi
- Department of Chemistry, Hunter College of the City University of New York, 695 Park Avenue, New York, NY 10065, USA, http://www.hunter.cuny.edu
- Department of Chemistry, Graduate Center of the City University of New York, New York, NY 10016, USA
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32
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McGregor D, Burton-Pye BP, Mbomekalle IM, Aparicio PA, Romo S, López X, Poblet JM, Francesconi LC. 99Tc and Re incorporated into metal oxide polyoxometalates: oxidation state stability elucidated by electrochemistry and theory. Inorg Chem 2012; 51:9017-28. [PMID: 22839965 DOI: 10.1021/ic3011713] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
The radioactive element technetium-99 ((99)Tc, half-life = 2.1 × 10(5) years, β(-) of 253 keV), is a major byproduct of (235)U fission in the nuclear fuel cycle. (99)Tc is also found in radioactive waste tanks and in the environment at National Lab sites and fuel reprocessing centers. Separation and storage of the long-lived (99)Tc in an appropriate and stable waste-form is an important issue that needs to be addressed. Considering metal oxide solid-state materials as potential storage matrixes for Tc, we are examining the redox speciation of Tc on the molecular level using polyoxometalates (POMs) as models. In this study we investigate the electrochemistry of Tc complexes of the monovacant Wells-Dawson isomers, α(1)-P(2)W(17)O(61)(10-) (α1) and α(2)-P(2)W(17)O(61)(10-) (α2) to identify features of metal oxide materials that can stabilize the immobile Tc(IV) oxidation state accessed from the synthesized Tc(V)O species and to interrogate other possible oxidation states available to Tc within these materials. The experimental results are consistent with density functional theory (DFT) calculations. Electrochemistry of K(7-n)H(n)[Tc(V)O(α(1)-P(2)W(17)O(61))] (Tc(V)O-α1), K(7-n)H(n)[Tc(V)O(α(2)-P(2)W(17)O(61))] (Tc(V)O-α2) and their rhenium analogues as a function of pH show that the Tc-containing derivatives are always more readily reduced than their Re analogues. Both Tc and Re are reduced more readily in the lacunary α1 site as compared to the α2 site. The DFT calculations elucidate that the highest oxidation state attainable for Re is VII while, under the same electrochemistry conditions, the highest oxidation state for Tc is VI. The M(V)→ M(IV) reduction processes for Tc(V)O-α1 are not pH dependent or only slightly pH dependent suggesting that protonation does not accompany reduction of this species unlike the M(V)O-α2 (M = (99)Tc, Re) and Re(V)O-α1 where M(V/IV) reduction process must occur hand in hand with protonation of the terminal M═O to make the π*(M═O) orbitals accessible to the addition of electrons. This result is consistent with previous extended X-ray absorption fine structure (EXAFS) and X-ray absorption near edge structure (XANES) data that reveal that the Tc(V) is "pulled" into the -α1 framework and that may facilitate the reduction of Tc(V)O-α1 and stabilize lower Tc oxidation states. This study highlights the inequivalency of the two sites, and their impact on the chemical properties of the Tc substituted in these positions.
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Affiliation(s)
- Donna McGregor
- Hunter College, City University of New York, 695 Park Avenue, New York, New York 10065, USA
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Song YF, Tsunashima R. Recent advances on polyoxometalate-based molecular and composite materials. Chem Soc Rev 2012; 41:7384-402. [DOI: 10.1039/c2cs35143a] [Citation(s) in RCA: 698] [Impact Index Per Article: 58.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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Ni L, Patzke GR. 1D- and 2D-architectures via self-assembly of the novel sandwich-type polyoxometalate [Zn2Sb2(B-α-ZnW9O34)2]14−. CrystEngComm 2012. [DOI: 10.1039/c2ce25319d] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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