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Xie J, Wang Y, Silver MA, Liu W, Duan T, Yin X, Chen L, Diwu J, Chai Z, Wang S. Tunable 4f/5f Bimodal Emission in Europium-Incorporated Uranyl Coordination Polymers. Inorg Chem 2018; 57:575-582. [DOI: 10.1021/acs.inorgchem.7b02304] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jian Xie
- 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
| | - 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
- Key Laboratory of Radiation Physics and
Technology, Ministry of Education, Institute of Nuclear Science and
Technology, Sichuan University, Chengdu 610064, 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
| | - Wei Liu
- 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
| | - Tao Duan
- School of National Defence Science & Technology, Southwest University of Science and Technology, Mianyang 621010, China
| | - Xuemiao Yin
- 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
| | - Juan Diwu
- 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
| | - 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
| | - 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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Biswas S, Steudtner R, Schmidt M, McKenna C, León Vintró L, Twamley B, Baker RJ. An investigation of the interactions of Eu³⁺ and Am³⁺ with uranyl minerals: implications for the storage of spent nuclear fuel. Dalton Trans 2016; 45:6383-93. [PMID: 27028717 DOI: 10.1039/c6dt00199h] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The reaction of a number of uranyl minerals of the (oxy)hydroxide, phosphate and carbonate types with Eu(iii), as a surrogate for Am(iii), have been investigated. A photoluminescence study shows that Eu(iii) can interact with the uranyl minerals Ca[(UO2)6(O)4(OH)6]·8H2O (becquerelite) and A[UO2(CO3)3]·xH2O (A/x = K3Na/1, grimselite; CaNa2/6, andersonite; and Ca2/11, liebigite). For the minerals [(UO2)8(O)2(OH)12]·12H2O (schoepite), K2[(UO2)6(O)4(OH)6]·7H2O (compreignacite), A[(UO2)2(PO4)2]·8H2O (A = Ca, meta-autunite; Cu, meta-torbernite) and Cu[(UO2)2(SiO3OH)2]·6H2O (cuprosklodowskite) no Eu(iii) emission was observed, indicating no incorporation into, or sorption onto the structure. In the examples with Eu(3+) incorporation, sensitized emission is seen and the lifetimes, hydration numbers and quantum yields have been determined. Time Resolved Laser Induced Fluroescence Spectroscpoy (TRLFS) at 10 K have also been measured and the resolution enhancements at these temperatures allow further information to be derived on the sites of Eu(iii) incorporation. Infrared and Raman spectra are recorded, and SEM analysis show significant morphology changes and the substitution of particularly Ca(2+) by Eu(3+) ions. Therefore, Eu(3+) can substitute Ca(2+) in the interlayers of becquerelite and liebigite and in the structure of andersonite, whilst in grimselite only sodium is exchanged. These results have guided an investigation into the reactions with (241)Am on a tracer scale and results from gamma-spectrometry show that becquerelite, andersonite, grimselite, liebigite and compreignacite can include americium in the structure. Shifts in the U[double bond, length as m-dash]O and C-O Raman active bands are similar to that observed in the Eu(iii) analogues and Am(iii) photoluminescence measurements are also reported on these phases; the Am(3+) ion quenches the emission from the uranyl ion.
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Affiliation(s)
- Saptarshi Biswas
- School of Chemistry, University of Dublin, Trinity College, Dublin 2, Ireland.
| | - Robin Steudtner
- Helmholtz-Zentrum Dresden-Rossendorf e.V., Institute of Resource Ecology, P.O. Box 510119, D-01314 Dresden, Germany
| | - Moritz Schmidt
- Helmholtz-Zentrum Dresden-Rossendorf e.V., Institute of Resource Ecology, P.O. Box 510119, D-01314 Dresden, Germany
| | - Cora McKenna
- Department of Geology, School of Natural Sciences, University of Dublin, Trinity College, Dublin 2, Ireland
| | - Luis León Vintró
- School Of Physics, University College Dublin, Belfield, Dublin 4, Ireland
| | - Brendan Twamley
- School of Chemistry, University of Dublin, Trinity College, Dublin 2, Ireland.
| | - Robert J Baker
- School of Chemistry, University of Dublin, Trinity College, Dublin 2, Ireland.
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Kumar M, Mohapatra M. A case study of energy transfer mechanism from uranium to europium in ZnAl₃O₄ spinel host by photoluminescence spectroscopy. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2016; 159:42-47. [PMID: 26827176 DOI: 10.1016/j.saa.2016.01.039] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/25/2015] [Revised: 01/20/2016] [Accepted: 01/23/2016] [Indexed: 06/05/2023]
Abstract
Zinc aluminate (ZAO), a member of spinel class of inorganic compounds has been of much interest of late due to its wide range of use in catalysis, optical, electronic and ceramic industries. When doped with several lanthanides, this material has proved to be a potential host matrix for phosphors. As lanthanides suffer from poor (direct) excitation and emission cross sections, the use of a co-dopant ion can help to circumvent this and extract better emission from a lanthanide doped ZAO system. In this connection, energy transfer mechanism from uranium to europium in the ZAO host was investigated by photoluminescence spectroscopic technique. It was seen that uranium gets stabilized in the hexavalent state as UO6(6-) (octahedral uranate) where as the lanthanide ion, Eu is stabilized in its trivalent state in the ZAO host. In the co-doped system, an efficient energy transfer pathway from the uranate to europium ion was observed. Based upon emission and life time data a suitable mechanism was proposed for the energy transfer (quenching) process. It was proposed that after excitation by photons, the uranate ions transfer their energy to nearby (5)D1 level of Eu(3+) ions which non-radiatively de-excites to the corresponding lower levels of (5)D0. Further this (5)D0 level decays in a radiative mode to the (7)F manifold giving the characteristic emission profile of trivalent Eu. It was proposed that both static and dynamic types of energy transfer mechanism were responsible for this process.
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Affiliation(s)
- Mithlesh Kumar
- Radiochemistry Division, Bhabha Atomic Research Centre, Mumbai 400085, India
| | - M Mohapatra
- Radiochemistry Division, Bhabha Atomic Research Centre, Mumbai 400085, India.
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Fu LS, Zhang HJ, Wang SB, Meng QG, Yang KY, Ni JZ. Study on the energy transfer between UO2+2 and Eu3+ in sol-gel derived titania matrix by luminescence spectroscopy. CHINESE J CHEM 2010. [DOI: 10.1002/cjoc.19990170206] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Affiliation(s)
- Koen Binnemans
- Katholieke Universiteit Leuven, Department of Chemistry, Celestijnenlaan 200F, bus 2404, B-3001 Leuven, Belgium
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Wallace SA, Hiller JM, Dai S, Miller LF. Neutron detection based upon a lithiated sol-gel glass. Appl Radiat Isot 2000; 53:755-8. [PMID: 11003516 DOI: 10.1016/s0969-8043(00)00222-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The addition of dopants in the wet chemistry formation of glass in sol-gel technology is used for many purposes. Among the uses are the fabrication of films sensitive to pH, temperature, the presence of dissolved chemicals in solutions and many others. This paper describes the use of sol-gel technology for the doping of B-10, Li-6 and U-235 into glass films applied to silicon surface barrier (SSB) detectors. Using a commercial preamp/amplifier and an IEEE-488 NIM counter, the response was recorded of the neutron profile in a neutron activation source. A portable personal computer recorded the thermal neutron map as the detector was lowered in 1.27-cm steps down a Numec thermal neutron activation source. The lithiated glass film on the SSB gave about four times the count rate of the boron-10 doped glass film. The U-235 doped glass film gave a much lower count rate, but maintained a constant output signal due to the presence of the alpha activity from the U-235 and the trace of U-234 present in the sample.
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Affiliation(s)
- SA Wallace
- Nuclear Engineering Department, University of Tennessee, Knoxville 37996-2300, USA.
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Dai S, Shin YS, Toth LM, Barnes CE. Comparative UV-Vis Studies of Uranyl Chloride Complex in Two Basic Ambient-Temperature Melt Systems: The Observation of Spectral and Thermodynamic Variations Induced via Hydrogen Bonding. Inorg Chem 1997; 36:4900-4902. [PMID: 11670174 DOI: 10.1021/ic970251h] [Citation(s) in RCA: 48] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Sheng Dai
- Chemical Technology Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6181, and Chemistry Department, University of Tennessee, Knoxville, Tennessee 37996-1700
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Dai S, Shin YS, Toth LM, Barnes CE. Spectroscopic Probing of Adsorption of Uranyl to Uranyl-Imprinted Silica Sol−Gel Glass via Steady-State and Time-Resolved Fluorescence Measurement. J Phys Chem B 1997. [DOI: 10.1021/jp970713c] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Sheng Dai
- Chemical Technology Division, Oak Ridge National Laboratory, P.O. Box 2008, Oak Ridge, Tennessee 37831-6181, and Department of Chemistry, University of Tennessee, Knoxville, Tennessee 37996-1600
| | - Y. S. Shin
- Chemical Technology Division, Oak Ridge National Laboratory, P.O. Box 2008, Oak Ridge, Tennessee 37831-6181, and Department of Chemistry, University of Tennessee, Knoxville, Tennessee 37996-1600
| | - L. M. Toth
- Chemical Technology Division, Oak Ridge National Laboratory, P.O. Box 2008, Oak Ridge, Tennessee 37831-6181, and Department of Chemistry, University of Tennessee, Knoxville, Tennessee 37996-1600
| | - C. E. Barnes
- Chemical Technology Division, Oak Ridge National Laboratory, P.O. Box 2008, Oak Ridge, Tennessee 37831-6181, and Department of Chemistry, University of Tennessee, Knoxville, Tennessee 37996-1600
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