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Ankita A, Chahal S, Singh S, Kumar S, Kumar P. Europium-doped cerium oxide nanoparticles: investigating oxygen vacancies and their role in enhanced photocatalytic and magnetic properties. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:1276-1287. [PMID: 38038920 DOI: 10.1007/s11356-023-30686-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/18/2023] [Accepted: 10/21/2023] [Indexed: 12/02/2023]
Abstract
In this study, pure and europium-doped (2%, 4%, 6%, and 8%) cerium oxide (CeO2) nanoparticles (NPs) were employed for efficient dye removal through photocatalytic approach. XRD and TEM confirmed the formation of pure CeO2 nanoparticles, while XPS and Raman spectroscopy were used to analyze the electronic properties and lattice defects, such as oxygen vacancies. The presence of lattice defects, which increased with the concentration of Eu, was found to be responsible for the enhanced degradation of Rose Bengal dye (82.4% for 8% Eu-doped sample) in 75 min. FTIR confirmed the chemical composition of the synthesized sample. The band at 617 cm-1, corresponding to the symmetrical stretching vibration mode of (Ce-O-Ce) or (Ce-O-Eu). The magnetic properties of synthesized samples were examined using VSM, revealing an increase from 4.48 to 11.0 emu/g in magnetization. This enhancement was attributed to F-center exchange mechanism (FCE), resulting from the presence of oxygen vacancies. These findings contribute to the development of advanced materials for sustainable wastewater treatment and spintronics.
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Affiliation(s)
- Ankita Ankita
- J. C. Bose University of Science and Technology, YMCA, Faridabad, 121006, Haryana, India
| | - Surjeet Chahal
- Materials and Nano Engineering Research Lab, Department of Physics, School of Physical Sciences, DIT University, Dehradun, 248009, India
| | - Saurabh Singh
- Toyota Technological Institute, Hisakata 2-12-1, Tempaku, Nagoya, 468-8511, Japan
| | - Sandeep Kumar
- J. C. Bose University of Science and Technology, YMCA, Faridabad, 121006, Haryana, India
| | - Parmod Kumar
- J. C. Bose University of Science and Technology, YMCA, Faridabad, 121006, Haryana, India.
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2
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Tan W, Xie S, Le D, Diao W, Wang M, Low KB, Austin D, Hong S, Gao F, Dong L, Ma L, Ehrlich SN, Rahman TS, Liu F. Fine-tuned local coordination environment of Pt single atoms on ceria controls catalytic reactivity. Nat Commun 2022; 13:7070. [PMID: 36400791 PMCID: PMC9674627 DOI: 10.1038/s41467-022-34797-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2022] [Accepted: 11/07/2022] [Indexed: 11/19/2022] Open
Abstract
Constructing single atom catalysts with fine-tuned coordination environments can be a promising strategy to achieve satisfactory catalytic performance. Herein, via a simple calcination temperature-control strategy, CeO2 supported Pt single atom catalysts with precisely controlled coordination environments are successfully fabricated. The joint experimental and theoretical analysis reveals that the Pt single atoms on Pt1/CeO2 prepared at 550 °C (Pt/CeO2-550) are mainly located at the edge sites of CeO2 with a Pt-O coordination number of ca. 5, while those prepared at 800 °C (Pt/CeO2-800) are predominantly located at distorted Ce substitution sites on CeO2 terrace with a Pt-O coordination number of ca. 4. Pt/CeO2-550 and Pt/CeO2-800 with different Pt1-CeO2 coordination environments exhibit a reversal of activity trend in CO oxidation and NH3 oxidation due to their different privileges in reactants activation and H2O desorption, suggesting that the catalytic performance of Pt single atom catalysts in different target reactions can be maximized by optimizing their local coordination structures.
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Affiliation(s)
- Wei Tan
- Department of Civil, Environmental, and Construction Engineering, Catalysis Cluster for Renewable Energy and Chemical Transformations (REACT), NanoScience Technology Center (NSTC), University of Central Florida, Orlando, FL, 32816, USA
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment; Jiangsu Key Laboratory of Vehicle Emissions Control, School of Chemistry and Chemical Engineering; Center of Modern Analysis, Nanjing University, Nanjing, 210023, China
| | - Shaohua Xie
- Department of Civil, Environmental, and Construction Engineering, Catalysis Cluster for Renewable Energy and Chemical Transformations (REACT), NanoScience Technology Center (NSTC), University of Central Florida, Orlando, FL, 32816, USA
| | - Duy Le
- Department of Physics, Catalysis Cluster for Renewable Energy and Chemical Transformations (REACT), University of Central Florida, Orlando, FL, 32816, USA
| | - Weijian Diao
- Department of Chemical and Biological Engineering, Villanova University, Villanova, PA, 19085, USA
| | - Meiyu Wang
- College of Engineering and Applied Sciences, Nanjing University, Nanjing, 210093, China
| | - Ke-Bin Low
- BASF Corporation, Iselin, NJ, 08830, USA
| | - Dave Austin
- Department of Physics, Catalysis Cluster for Renewable Energy and Chemical Transformations (REACT), University of Central Florida, Orlando, FL, 32816, USA
| | - Sampyo Hong
- Brewton-Parker College, Mount Vernon, GA, 30445, USA
| | - Fei Gao
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment; Jiangsu Key Laboratory of Vehicle Emissions Control, School of Chemistry and Chemical Engineering; Center of Modern Analysis, Nanjing University, Nanjing, 210023, China
| | - Lin Dong
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment; Jiangsu Key Laboratory of Vehicle Emissions Control, School of Chemistry and Chemical Engineering; Center of Modern Analysis, Nanjing University, Nanjing, 210023, China
| | - Lu Ma
- National Synchrotron Light Source II (NSLS-II), Brookhaven National Laboratory, Upton, NY, 11973, USA
| | - Steven N Ehrlich
- National Synchrotron Light Source II (NSLS-II), Brookhaven National Laboratory, Upton, NY, 11973, USA
| | - Talat S Rahman
- Department of Physics, Catalysis Cluster for Renewable Energy and Chemical Transformations (REACT), University of Central Florida, Orlando, FL, 32816, USA
| | - Fudong Liu
- Department of Civil, Environmental, and Construction Engineering, Catalysis Cluster for Renewable Energy and Chemical Transformations (REACT), NanoScience Technology Center (NSTC), University of Central Florida, Orlando, FL, 32816, USA.
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D'Achille AE, Wallace RM, Coffer JL. Morphology-dependent fluorescence of europium-doped cerium oxide nanomaterials. NANOSCALE ADVANCES 2021; 3:3563-3572. [PMID: 36133706 PMCID: PMC9417455 DOI: 10.1039/d1na00096a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2021] [Accepted: 04/27/2021] [Indexed: 05/03/2023]
Abstract
Europium-doped CeO2 nanomaterials have been investigated for a variety of sensing and biological applications, as doping enhances the catalytic activity of CeO2 and contributes visible fluorescence to the nanomaterial. However, scant evidence is available that directly compares Eu3+ fluorescence from multiple morphologies establishing useful correlation(s) between physical and optical trends in such structures. To address this shortcoming, Eu3+-doped CeO2 nanorods, nanowires, nanocubes, and annealed nanorods were synthesized and characterized, representing a range of crystalline defect sizes, defect concentrations, and surface moieties. Morphologies rich with oxygen defects and hydroxyl groups (assessed via X-ray photoelectron spectroscopy) quenched the Eu3+ fluorescence, while samples with larger crystalline domains and lower Ce3+ concentrations have relatively stronger emission intensities. Of the four morphologies, nanocubes exhibit the strongest emission, as each structure is monocrystalline with few oxygen defects and associated quenching sites. Furthermore, the Eu3+ hypersensitive transition is more responsive to the dopant concentration in the nanocubes, as defects induced by the dopant are not removed by thermal annealing.
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Affiliation(s)
- Anne E D'Achille
- Department of Chemistry and Biochemistry, Texas Christian University Ft. Worth TX. 76129 USA
| | - Robert M Wallace
- Department of Materials Science and Engineering, University of Texas at Dallas Dallas TX 75080 USA
| | - Jeffery L Coffer
- Department of Chemistry and Biochemistry, Texas Christian University Ft. Worth TX. 76129 USA
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Gnanam S, Gajendiran J, Ramana Ramya J, Ramachandran K, Gokul Raj S. Glycine-assisted hydrothermal synthesis of pure and europium doped CeO2 nanoparticles and their structural, optical, photoluminescence, photocatalytic and antibacterial properties. Chem Phys Lett 2021. [DOI: 10.1016/j.cplett.2020.138217] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Gupta SK, Kadam R, Pujari P. Lanthanide spectroscopy in probing structure-property correlation in multi-site photoluminescent phosphors. Coord Chem Rev 2020. [DOI: 10.1016/j.ccr.2020.213405] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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Co-Supported CeO2Nanoparticles for CO Catalytic Oxidation: Effects of Different Synthesis Methods on Catalytic Performance. Catalysts 2020. [DOI: 10.3390/catal10020243] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Hydrothermal and co-precipitation methods were studied as two different methods for the synthesis of CeO2nanocatalysts. Co/CeO2 catalysts supported by 2, 4, 6, or 8wt% Co were further synthesized through impregnation and the performance of the catalytic oxidation of CO has been investigated. The highest specific surface area and the best catalytic performance was obtained by the catalyst 4wt% Co/CeO2 with the CeO2 support synthesized by the hydrothermal method (4% Co/CeO2-h), which yielded 100% CO conversion at 130 °C. The formation of CeO2 nanoparticles was confirmed by TEM analysis. XRD and SEM-EDX mapping analyses indicated that CoOx is highly dispersed on the 4% Co/CeO2-h catalyst surface. H2-TPR and O2-TPD results showed that 4% Co/CeO2-h possesses the best redox properties and the highest amount of chemically adsorbed oxygen on its surface among all tested catalysts. Raman and XPS spectra showed strong interactions between highly dispersed Co2+ active sites and exposed Ce3+ on the surface of the CeO2 support, resulting in the formation of the strong redox cycle Ce4+ + Co2+↔ Ce3+ + Co3+.This may explain that 4% Co/CeO2-h exhibited the best catalytic activity among all tested catalysts.
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Jayababu N, Poloju M, Shruthi J, Reddy MVR. Ultrasensitive resistivity-based ethanol sensor based on the use of CeO 2-Fe 2O 3 core-shell microclusters. Mikrochim Acta 2019; 186:712. [PMID: 31650364 DOI: 10.1007/s00604-019-3809-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2019] [Accepted: 09/09/2019] [Indexed: 11/26/2022]
Abstract
This paper presents a method for synthesis of CeO2-Fe2O3 core-shell nanoparticles (CSNPs). These are shown to display enhanced ethanol sensing properties. Synthesis was done via a two-step process, starting with co-precipitation and followed by applying a sol-gel method. High resolution electron microscopy results revealed the core-shell nature of the particles. Surface morphological studies of the CSNPs showed a microcluster-like structure which is assumed to be responsible for the enhanced sensing response. X-ray photoelectron spectroscopy revealed valence states of Fe(III) and Ce(IV). The material was used in a resisitive sensor for ethanol vapor at room temperature (RT), at a typically applied voltage of 5 V. The response of the sensor is higher than that of pristine CeO2 or Fe2O3 sensors towards 100 ppm of ethanol at RT. The lower detection limit is 1 ppm (with a signal change of 23). The response and recovery times are as short as 3 and 7 s, respectively. The sensing mechanism is discussed in detail with respect to n-n heterojunctions formed between n-CeO2 and n-Fe2O3, high catalytic activity of the Fe2O3, and microcluster-like structures of the particles. Graphical abstract Schematic representation of gas sensing mechanism of CeO2-Fe2O3 core-shell nanoparticles (c) along with their morphological images (a&b).
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Affiliation(s)
- Nagabandi Jayababu
- Thin Films and Nano Materials Research Laboratory, Department of Physics, Osmania University, Hyderabad, Telangana State, 500007, India.
| | - Madhukar Poloju
- Thin Films and Nano Materials Research Laboratory, Department of Physics, Osmania University, Hyderabad, Telangana State, 500007, India
| | - Julakanti Shruthi
- Thin Films and Nano Materials Research Laboratory, Department of Physics, Osmania University, Hyderabad, Telangana State, 500007, India
| | - Musugu Venkata Ramana Reddy
- Thin Films and Nano Materials Research Laboratory, Department of Physics, Osmania University, Hyderabad, Telangana State, 500007, India
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Florea M, Avram D, Maraloiu VA, Cojocaru B, Tiseanu C. Heavy doping of ceria by wet impregnation: a viable alternative to bulk doping approaches. NANOSCALE 2018; 10:18043-18054. [PMID: 30229790 DOI: 10.1039/c8nr03695k] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
To avoid the deleterious effects of dopant segregation, synthesis methods that facilitate a homogenous dopant distribution in the ceria lattice were employed. Though doping ceria by wet impregnation was also credited to induce a homogeneous solid solution even in the heavy regime (concentration ≥20%, A. Corma, P. Atienzar, H. Garcia and J. Chane-Ching, Nat. Mater., 2004, 3, 394-397), no follow up investigation has been reported. Herein, we investigated ceria nanoparticles (1%Tm-CeO2 and 1%Eu-CeO2) wet-impregnated with trivalent rare-earth (Yb, 20%), bivalent (Ca, 20%) and isovalent (Zr, 30%) metals, followed by annealing in air. Homogeneity of the solid solutions of Yb-impregnated ceria was confirmed by a two-feature characterization toolbox that included X-ray diffraction, Raman spectroscopy, transmission electron microscopy, as well as up-conversion emission as a probe tool. Since the up-conversion emission of Tm was not detectable in the absence of Yb while its efficiency depends on the average distance between Yb and Tm ions, the Yb incorporation and its migration from the surface to the lattice bulk sites in wet-impregnated ceria can be "visualized" and compared with that of the Yb bulk-doped counterpart. The use of Eu luminescence as a local probe confirmed the homogeneity of solid solutions of Ca and Zr-impregnated ceria and also sustained the opposite roles of Ca and Zr as the repeller and the scavenger of oxygen vacancies, respectively. All these results suggested that heavy doping of ceria by wet impregnation with metals with +2, +3 and +4 valencies represent a facile alternative to conventional doping approaches. Therefore, the effects of the amount and the type of metal dopant on the structural properties of CeO2 could be investigated in a more systematic and probably a more reproducible manner, which would significantly increase the potential of ceria in catalysis and other applications.
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Affiliation(s)
- Mihaela Florea
- National Institute of Materials Physics, 405A Atomistilor Street, 077125 Magurele-Ilfov, Romania
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Huang H, Wu HH, Wang X, Huang B, Zhang TY. Enhancing sodium ionic conductivity in tetragonal-Na3PS4 by halogen doping: a first principles investigation. Phys Chem Chem Phys 2018; 20:20525-20533. [DOI: 10.1039/c8cp02383b] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The sodium ionic conductivity of t-Na3PS4 can be significantly enhanced by introducing Na ion vacancies via halogen dopants.
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Affiliation(s)
- He Huang
- Department of Mechanical and Aerospace Engineering
- Hong Kong University of Science and Technology
- Kowloon
- China
| | - Hong-Hui Wu
- Department of Chemistry
- University of Nebraska-Lincoln
- Lincoln
- USA
| | - Xinjiang Wang
- Department of Mechanical and Aerospace Engineering
- Hong Kong University of Science and Technology
- Kowloon
- China
| | - Baoling Huang
- Department of Mechanical and Aerospace Engineering
- Hong Kong University of Science and Technology
- Kowloon
- China
| | - Tong-Yi Zhang
- Shanghai University Materials Genome Institute and Shanghai Materials Genome Institute
- Shanghai University
- Shanghai 200444
- China
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Nanoscale insights into doping behavior, particle size and surface effects in trivalent metal doped SnO 2. Sci Rep 2017; 7:9598. [PMID: 28851917 PMCID: PMC5575111 DOI: 10.1038/s41598-017-09026-2] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2017] [Accepted: 07/05/2017] [Indexed: 11/08/2022] Open
Abstract
Despite considerable research, the location of an aliovalent dopant into SnO2 nanoparticles is far to be clarified. The aim of the present study on trivalent lanthanide doped SnO2 is to differentiate between substitutional versus interstitial and surface versus bulk doping, delineate the bulk and surface defects induced by doping and establish an intrinsic dopant distribution. We evidence for the first time a complex distribution of intrinsic nature composed of substitutional isolated, substitutional associates with defects as well as surface centers. Such multi-modal distribution is revealed for Eu and Sm, while Pr, Tb and Dy appear to be distributed mostly on the SnO2 surface. Like the previously reported case of Eu, Sm displays a long-lived luminescence decaying in the hundreds of ms scale which is likely related to a selective interaction between the traps and the substitutional isolated center. Analyzing the time-gated luminescence, we conclude that the local lattice environment of the lattice Sn is not affected by the particle size, being remarkably similar in the ~2 and 20 nm particles. The photocatalytic measurements employed as a probe tool confirm the conclusions from the luminescence measurements concerning the nature of defects and the temperature induced migration of lanthanide dopants.
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Wolf S, Feldmann C. Mikroemulsionen: neue Möglichkeiten zur Erweiterung der Synthese anorganischer Nanopartikel. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201604263] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Silke Wolf
- Institut für Anorganische Chemie; Karlsruher Institut für Technologie (KIT); Engesserstraße 15 76131 Karlsruhe Deutschland
| | - Claus Feldmann
- Institut für Anorganische Chemie; Karlsruher Institut für Technologie (KIT); Engesserstraße 15 76131 Karlsruhe Deutschland
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12
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Wolf S, Feldmann C. Microemulsions: Options To Expand the Synthesis of Inorganic Nanoparticles. Angew Chem Int Ed Engl 2016; 55:15728-15752. [DOI: 10.1002/anie.201604263] [Citation(s) in RCA: 59] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2016] [Indexed: 12/16/2022]
Affiliation(s)
- Silke Wolf
- Institut für Anorganische Chemie; Karlsruhe Institute of Technology (KIT); Engesserstrasse 15 76131 Karlsruhe Germany
| | - Claus Feldmann
- Institut für Anorganische Chemie; Karlsruhe Institute of Technology (KIT); Engesserstrasse 15 76131 Karlsruhe Germany
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Montini T, Melchionna M, Monai M, Fornasiero P. Fundamentals and Catalytic Applications of CeO2-Based Materials. Chem Rev 2016; 116:5987-6041. [DOI: 10.1021/acs.chemrev.5b00603] [Citation(s) in RCA: 1484] [Impact Index Per Article: 185.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Tiziano Montini
- Department of Chemical and
Pharmaceutical Sciences, University of Trieste and ICCOM-CNR and INSTM Trieste Research Units Via L. Giorgieri 1, 34127 Trieste, Italy
| | - Michele Melchionna
- Department of Chemical and
Pharmaceutical Sciences, University of Trieste and ICCOM-CNR and INSTM Trieste Research Units Via L. Giorgieri 1, 34127 Trieste, Italy
| | - Matteo Monai
- Department of Chemical and
Pharmaceutical Sciences, University of Trieste and ICCOM-CNR and INSTM Trieste Research Units Via L. Giorgieri 1, 34127 Trieste, Italy
| | - Paolo Fornasiero
- Department of Chemical and
Pharmaceutical Sciences, University of Trieste and ICCOM-CNR and INSTM Trieste Research Units Via L. Giorgieri 1, 34127 Trieste, Italy
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Balestrieri M, Colis S, Gallart M, Schmerber G, Bazylewski P, Chang GS, Ziegler M, Gilliot P, Slaoui A, Dinia A. Photon management properties of rare-earth (Nd,Yb,Sm)-doped CeO2 films prepared by pulsed laser deposition. Phys Chem Chem Phys 2016; 18:2527-34. [PMID: 26699802 DOI: 10.1039/c5cp04961j] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
CeO2 is a promising material for applications in optoelectronics and photovoltaics due to its large band gap and values of the refractive index and lattice parameters, which are suitable for silicon-based devices. In this study, we show that trivalent Sm, Nd and Yb ions can be successfully inserted and optically activated in CeO2 films grown at a relatively low deposition temperature (400 °C), which is compatible with inorganic photovoltaics. CeO2 thin films can therefore be efficiently functionalized with photon-management properties by doping with trivalent rare earth (RE) ions. Structural and optical analyses provide details of the electronic level structure of the films and of their energy transfer mechanisms. In particular, we give evidence of the existence of an absorption band centered at 350 nm from which energy transfer to rare earth ions occurs. The transfer mechanisms can be completely explained only by considering the spontaneous migration of Ce(3+) ions in CeO2 at a short distance from the RE(3+) ions. The strong absorption cross section of the f-d transitions in Ce(3+) ions efficiently intercepts the UV photons of the solar spectrum and therefore strongly increases the potential of these layers as downshifters and downconverters.
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Affiliation(s)
- Matteo Balestrieri
- Institut de Physique et Chimie des Matériaux de Strasbourg, Université de Strasbourg, CNRS UMR 7504, 23 rue du Loess, B.P. 43, F-67034 Strasbourg Cedex 2, France.
| | - Silviu Colis
- Institut de Physique et Chimie des Matériaux de Strasbourg, Université de Strasbourg, CNRS UMR 7504, 23 rue du Loess, B.P. 43, F-67034 Strasbourg Cedex 2, France.
| | - Mathieu Gallart
- Institut de Physique et Chimie des Matériaux de Strasbourg, Université de Strasbourg, CNRS UMR 7504, 23 rue du Loess, B.P. 43, F-67034 Strasbourg Cedex 2, France.
| | - Guy Schmerber
- Institut de Physique et Chimie des Matériaux de Strasbourg, Université de Strasbourg, CNRS UMR 7504, 23 rue du Loess, B.P. 43, F-67034 Strasbourg Cedex 2, France.
| | - Paul Bazylewski
- Department of Physics and Engineering Physics, University of Saskatchewan, 116 Science Place, Saskatoon, SK S7N 5E2, Canada
| | - Gap Soo Chang
- Department of Physics and Engineering Physics, University of Saskatchewan, 116 Science Place, Saskatoon, SK S7N 5E2, Canada
| | - Marc Ziegler
- Institut de Physique et Chimie des Matériaux de Strasbourg, Université de Strasbourg, CNRS UMR 7504, 23 rue du Loess, B.P. 43, F-67034 Strasbourg Cedex 2, France.
| | - Pierre Gilliot
- Institut de Physique et Chimie des Matériaux de Strasbourg, Université de Strasbourg, CNRS UMR 7504, 23 rue du Loess, B.P. 43, F-67034 Strasbourg Cedex 2, France.
| | - Abdelilah Slaoui
- Laboratoire ICube, Université de Strasbourg, CNRS UMR 7357, 23 rue du Loess, B.P. 20, F-67037 Strasbourg Cedex 2, France
| | - Aziz Dinia
- Institut de Physique et Chimie des Matériaux de Strasbourg, Université de Strasbourg, CNRS UMR 7504, 23 rue du Loess, B.P. 43, F-67034 Strasbourg Cedex 2, France.
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Gupta SK, Ghosh PS, Pathak N, Kadam RM. Why host to dopant energy transfer is absent in the MgAl2O4:Eu3+ spinel? And exploring Eu3+ site distribution and local symmetry through its photoluminescence: interplay of experiment and theory. RSC Adv 2016. [DOI: 10.1039/c6ra03369e] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Local site occupancy of Eu3+ in combustion synthesized MgAl2O4 spinel and host → Eu3+ energy transfer dynamics is investigated using photoluminescence and DFT calculations.
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Affiliation(s)
- Santosh K. Gupta
- Radiochemistry Division
- Bhabha Atomic Research Centre
- Mumbai-400085
- India
| | - P. S. Ghosh
- Materials Science Division
- Bhabha Atomic Research Centre
- Mumbai-400085
- India
| | - Nimai Pathak
- Radiochemistry Division
- Bhabha Atomic Research Centre
- Mumbai-400085
- India
| | - R. M. Kadam
- Radiochemistry Division
- Bhabha Atomic Research Centre
- Mumbai-400085
- India
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