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Volkov S, Yukhno V, Banaru A, Deyneko D, Aksenov S, Charkin D, Povolotskiy A, Savchenko Y, Antonov A, Krzhizhanovskaya M, Ugolkov V, Firsova V, Vaitieva Y, Boldyrev K, Bubnova R. Magnesium cations as templates for the self-assembly of supramolecular luminescent {Mg@[B 18φ 34-35]}-clusters. Dalton Trans 2024. [PMID: 38682898 DOI: 10.1039/d3dt04048h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/01/2024]
Abstract
Solvothermal reaction of magnesium nitrate and boron oxide in N,N-dimethylformamide produced a number of particularly complex supramolecular magnesium borates. Five topologically different types of negatively charged {Mg@[B18φ34-35]}-clusters, φ = O, OH, were observed with the magnesium cation as a core and octadecaborate anions as shells. The clusters assemble via common borate polyhedra forming 1D chains, a 2D mesoporous layer, and 3D mesoporous frameworks with an effective channel width of up to 16 Å. Topological analysis of the clusters in combination with the modular crystallography approach indicates that numerous new functional materials can be obtained by varying their assembly mode. At least one compound containing such clusters exhibits a very strong luminescence.
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Affiliation(s)
- Sergey Volkov
- Laboratory of Arctic Mineralogy and Material Sciences, Kola Science Centre, Russian Academy of Sciences, Apatity, Russia.
- Grebenshchikov Institute of Silicate Chemistry, St Petersburg, Russia
| | - Valentina Yukhno
- Grebenshchikov Institute of Silicate Chemistry, St Petersburg, Russia
| | - Alexander Banaru
- Department of Chemistry, Lomonosov Moscow State University, Moscow, Russia
- Laboratory of Arctic Mineralogy and Material Sciences, Kola Science Centre, Russian Academy of Sciences, Apatity, Russia.
| | - Dina Deyneko
- Department of Chemistry, Lomonosov Moscow State University, Moscow, Russia
- Laboratory of Arctic Mineralogy and Material Sciences, Kola Science Centre, Russian Academy of Sciences, Apatity, Russia.
| | - Sergey Aksenov
- Laboratory of Arctic Mineralogy and Material Sciences, Kola Science Centre, Russian Academy of Sciences, Apatity, Russia.
- Geological Institute, Kola Science Centre, Russian Academy of Sciences, Apatity, Russia
| | - Dmitri Charkin
- Department of Chemistry, Lomonosov Moscow State University, Moscow, Russia
- Laboratory of Arctic Mineralogy and Material Sciences, Kola Science Centre, Russian Academy of Sciences, Apatity, Russia.
| | - Alexey Povolotskiy
- Institute of Chemistry, Saint Petersburg State University, St Petersburg, Russia
| | - Yevgeny Savchenko
- Geological Institute, Kola Science Centre, Russian Academy of Sciences, Apatity, Russia
- Nanomaterials Research Centre, Kola Science Centre, Russian Academy of Sciences, Apatity, Russia
| | - Andrey Antonov
- Laboratory of Nature-Inspired Technologies and Environmental Safety of the Arctic, Kola Science Centre, Russian Academy of Sciences, Apatity, Russia
| | - Maria Krzhizhanovskaya
- Department of Crystallography, Saint Petersburg State University, St Petersburg, Russia
- Grebenshchikov Institute of Silicate Chemistry, St Petersburg, Russia
| | - Valery Ugolkov
- Grebenshchikov Institute of Silicate Chemistry, St Petersburg, Russia
| | - Vera Firsova
- Grebenshchikov Institute of Silicate Chemistry, St Petersburg, Russia
| | - Yulia Vaitieva
- Laboratory of Arctic Mineralogy and Material Sciences, Kola Science Centre, Russian Academy of Sciences, Apatity, Russia.
| | - Kirill Boldyrev
- Institute of Spectroscopy of the Russian Academy of Sciences, Fizicheskaya Str. 5, Troitsk, Moscow, 108840, Russia
| | - Rimma Bubnova
- Grebenshchikov Institute of Silicate Chemistry, St Petersburg, Russia
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Spassky D, Vasil’ev A, Nagirnyi V, Kudryavtseva I, Deyneko D, Nikiforov I, Kondratyev I, Zadneprovski B. Bright UV-C Phosphors with Excellent Thermal Stability-Y 1-xSc xPO 4 Solid Solutions. Materials (Basel) 2022; 15:6844. [PMID: 36234185 PMCID: PMC9571669 DOI: 10.3390/ma15196844] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/26/2022] [Revised: 09/23/2022] [Accepted: 09/28/2022] [Indexed: 06/16/2023]
Abstract
The structural and luminescence properties of undoped Y1-xScxPO4 solid solutions have been studied. An intense thermally stable emission with fast decay (τ1/e ~ 10-7 s) and a band position varying from 5.21 to 5.94 eV depending on the Sc/Y ratio is detected and ascribed to the 2p O-3d Sc self-trapped excitons. The quantum yield of the UV-C emission, also depending on the Sc/Y ratio, reaches 34% for the solid solution with x = 0.5 at 300 K. It is shown by a combined analysis of theoretical and experimental data that the formation of Sc clusters occurs in the solid solutions studied. The clusters facilitate the creation of energy wells at the conduction band bottom, which enables deep localization of electronic excitations and the creation of luminescence centers characterized by high quantum yield and thermal stability of the UV-C emission.
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Affiliation(s)
- Dmitry Spassky
- Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University, Leninskiye Gory 1-2, 119991 Moscow, Russia
- Institute of Physics, University of Tartu, W. Ostwald Str. 1, 50411 Tartu, Estonia
| | - Andrey Vasil’ev
- Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University, Leninskiye Gory 1-2, 119991 Moscow, Russia
| | - Vitali Nagirnyi
- Institute of Physics, University of Tartu, W. Ostwald Str. 1, 50411 Tartu, Estonia
| | - Irina Kudryavtseva
- Institute of Physics, University of Tartu, W. Ostwald Str. 1, 50411 Tartu, Estonia
| | - Dina Deyneko
- Department of Chemistry, Lomonosov Moscow State University, Leninskiye Gory 1-3, 119991 Moscow, Russia
- Laboratory of Arctic Mineralogy and Material Sciences, Kola Science Centre, Russian Academy of Sciences, 14 Fersman Street, 184209 Apatity, Russia
| | - Ivan Nikiforov
- Department of Chemistry, Lomonosov Moscow State University, Leninskiye Gory 1-3, 119991 Moscow, Russia
| | - Ildar Kondratyev
- Physics Department, Lomonosov Moscow State University, Leninskiye Gory 1-2, 119991 Moscow, Russia
| | - Boris Zadneprovski
- All-Russian Research Institute for Synthesis of Materials, Institutskaya Street 1, 601600 Alexandrov, Russia
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Aksenov S, Antonov A, Deyneko D, Krivovichev S, Merlino S. Polymorphism, polytypism and modular aspect of compounds with the general formula A
2
M
3( TO 4) 4 ( A = Na, Rb, Cs, Ca; M = Mg, Mn, Fe 3+, Cu 2+; T = S 6+, P 5+): order–disorder, topological description and DFT calculations. Acta Crystallogr Sect B 2022; 78:61-69. [DOI: 10.1107/s2052520621009136] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2021] [Accepted: 09/03/2021] [Indexed: 04/10/2023]
Abstract
The crystal structure of Na2Mn3(SO4)4 [unit-cell parameters a = 14.8307 (18), b = 9.9107 (18), c = 8.6845 (12) Å, space group Cmc21] displays order–disorder (OD) character and can be described using the OD groupoid family, more precisely a family of OD structures built up by two types of non-polar layers, with layer symmetry P(m)c21 (L
2n+1 type) and P(b)cm (L
2n
type) (category IV). A new hypothetical MDO2 polytype has been proposed and the geometry optimization demonstrates its reasonability as another possible stable polytype. Compounds Na2Mn3–x
Mg
x
(SO4)4 with the unit-cell parameters a ∼ 29.2–29.7 Å, b ∼ 9.5–9.9 Å, c ∼ 8.7 Å and space group Pbca can be described in terms of modularity as a sequence of A, S
1 and S
2 modules:…|AS
1
AS
2
AS
1
AS
2|… or (AS
1
AS
2), together with MDO1 (AS
1
AS
1) and MDO2 (AS
2
AS
2). The crystal structures of itelmenite, NaCaFe3+
3(PO4)4, and Ca2MgFe3+
2(PO4)4 are crystal-chemical isotypic to Na2Mn3–x
Mg
x
(SO4)4 and should be considered as (A*S
1
A*S
2) derivatives of the (AS
1
AS
2)-type structure.
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Fu J, Liu N, Mei L, Liao L, Deyneko D, Wang J, Bai Y, Lv G. Synthesis of Ce-doped Mn 3Gd 7-xCe x(SiO 4) 6O 1.5 for the enhanced catalytic ozonation of tetracycline. Sci Rep 2019; 9:18734. [PMID: 31822737 PMCID: PMC6904768 DOI: 10.1038/s41598-019-55230-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2019] [Accepted: 11/24/2019] [Indexed: 11/16/2022] Open
Abstract
A novel cerium doped compounds Mn3Gd7–xCex(SiO4)6O1.5 with an apatite structure was found and used to achieve high-efficiency degradation of tetracycline in aqueous solution. The catalysts were characterized by XRD, XPS, EDS and other techniques. The characteristic results indicated that the catalytic activity of the compound was improved due to the introduction of Ce in the structure, because Ce3+ which was stably present in the apatite structure can serve as an active site for the reaction, and in addition, there was a high presence between Ce4+ and Ce3+ on the surface of the catalyst. The redox potential and high oxygen storage capacity were also beneficial for the catalytic reaction. The results of free radical capture indicated that both superoxide radicals and hydroxyl radicals participated in the catalytic oxidation process and played an important role in the reaction. The decomposition of tetracycline followed the pseudo second-order reaction kinetics. In addition, the catalyst exhibited long-term stability and low metal leaching during the reaction, which indicated that the novel cerium-doped apatite structure material could be a promising wastewater treatment material.
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Affiliation(s)
- Jie Fu
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Sciences and Technology, China University of Geosciences, Beijing, 100083, China
| | - Ning Liu
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Sciences and Technology, China University of Geosciences, Beijing, 100083, China
| | - Lefu Mei
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Sciences and Technology, China University of Geosciences, Beijing, 100083, China.
| | - Libing Liao
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Sciences and Technology, China University of Geosciences, Beijing, 100083, China.
| | - Dina Deyneko
- Chemistry Department, Lomonosov Moscow State University, 119991, Moscow, Russia
| | - Jiayang Wang
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Sciences and Technology, China University of Geosciences, Beijing, 100083, China
| | - Yaning Bai
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Sciences and Technology, China University of Geosciences, Beijing, 100083, China
| | - Guocheng Lv
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Sciences and Technology, China University of Geosciences, Beijing, 100083, China.
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Morozov V, Abakumov A, Hadermann J, Khaikina E, Deyneko D, Lazoryak B, Leonidov I, Batuk D, Batuk M. Aperiodic structures and luminescent properties in the scheelite family. Acta Crystallogr A Found Adv 2018. [DOI: 10.1107/s2053273318093828] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/03/2023] Open
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Lazoryak B, Deyneko D, Aksenov S, Grebenev V, Stefanovich S, Belikov K, Kosmyna M, Shekhovtsov A, Sulich A, Paszkowicz W. Influence of lithium and magnesium on the real structure and dielectric properties of Ca 9Y(VO 4) 7 single crystals. CrystEngComm 2018. [DOI: 10.1039/c8ce01252k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The real crystal structure was oxyaminated by complex methods; the influence of impurity and point defects is shown.
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Affiliation(s)
| | - Dina Deyneko
- Chemistry Department
- Moscow State University
- Moscow
- Russia
| | | | | | | | | | - Miron Kosmyna
- Institute for Single Crystals
- NAS of Ukraine
- Kharkov
- Ukraine
| | | | - Adrian Sulich
- Institute of Physics
- Polish Academy of Sciences
- Warsaw
- Poland
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