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Wang G, Li C, Lee MH, Yao J. Sr 2HgGe 2OS 6: A Hg-Based Oxychalcogenide Infrared Nonlinear Optical Material Exhibiting Favorable Balance between a Large Band Gap and Strong Second Harmonic Generation Response. Inorg Chem 2024; 63:10288-10295. [PMID: 38780405 DOI: 10.1021/acs.inorgchem.4c00959] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/25/2024]
Abstract
Currently, oxychalcogenides with mixed-anion groups that integrate the property advantages of oxides (wide optical band gap) and chalcogenides [strong second harmonic generation (SHG) response] through chemical substitution engineering have attracted widespread interest and are considered to be important candidates for infrared (IR) nonlinear optical (NLO) materials. Herein, the first Hg-based oxychalcogenide Sr2HgGe2OS6 with mixed anion [GeOS3] units has been successfully synthesized through a spontaneous crystallization method, which exhibits a favorable balance between the strong SHG response (0.7 × AgGaS2) and large optical band gap (2.9 eV). In addition, Sr2HgGe2OS6 shows high laser-induced damage threshold (LIDT, 2.1 × AgGaS2) as well as phase-matching (PM) performance. Theoretical calculations indicate that the Sr2HgGe2OS6 encompasses large birefringence of 0.128@2090 nm (3.3 × AgGaS2) and its SHG density mainly comes from [HgS4] tetrahedra and [GeOS3] units. This work not only demonstrates that Sr2HgGe2OS6 is a promising IR NLO material but also provides new ideas for the exploration of Hg-based oxychalcogenide IR NLO materials.
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Affiliation(s)
- Guili Wang
- Beijing Center for Crystal Research and Development, Key Lab of Functional Crystals and Laser Technology, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Chunxiao Li
- Beijing Center for Crystal Research and Development, Key Lab of Functional Crystals and Laser Technology, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Ming-Hsien Lee
- Department of Physics, Tamkang University, New Taipei 25137, Taiwan
| | - Jiyong Yao
- Beijing Center for Crystal Research and Development, Key Lab of Functional Crystals and Laser Technology, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, P. R. China
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Czaja P, Szostak E, Hetmańczyk J, Zachariasz P, Majda D, Suchanicz J, Karolus M, Bochenek D, Osińska K, Jędryka J, Kityk A, Piasecki M. Thermal Stability and Non-Linear Optical and Dielectric Properties of Lead-Free K 0.5Bi 0.5TiO 3 Ceramics. MATERIALS (BASEL, SWITZERLAND) 2024; 17:2089. [PMID: 38730896 PMCID: PMC11084477 DOI: 10.3390/ma17092089] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2024] [Revised: 04/04/2024] [Accepted: 04/16/2024] [Indexed: 05/13/2024]
Abstract
Lead-free K0.5Bi0.5TiO3 (KBT) ceramics with high density (~5.36 g/cm3, 90% of X-ray density) and compositional purity (up to 90%) were synthesized using a solid-state reaction method. Strongly condensed KBT ceramics revealed homogenous local microstructures. TG/DSC (Thermogravimetry-differential scanning calorimetry) techniques characterized the thermal and structural stability of KBT. High mass stability (>0.4%) has proven no KBT thermal decomposition or other phase precipitation up to 1000 °C except for the co-existing K2Ti6O13 impurity. A strong influence of crystallites size and sintering conditions on improved dielectric and non-linear optical properties was reported. A significant increase (more than twice) in dielectric permittivity (εR), substantial for potential applications, was found in the KBT-24h specimen with extensive milling time. Moreover, it was observed that the second harmonic generation (λSHG = 532 nm) was activated at remarkably low fundamental beam intensity. Finally, spectroscopic experiments (Fourier transform Raman and far-infrared spectroscopy (FT-IR)) were supported by DFT (Density functional theory) calculations with a 2 × 2 × 2 supercell (P42mc symmetry and C4v point group). Moreover, the energy band gap was calculated (Eg = 2.46 eV), and a strong hybridization of the O-2p and Ti-3d orbitals at Eg explained the nature of band-gap transition (Γ → Γ).
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Affiliation(s)
- Piotr Czaja
- Institute of Technology, University of the National Education Commission, Podchorążych 2, 30-084 Krakow, Poland
| | - Elżbieta Szostak
- Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Krakow, Poland; (J.H.); (D.M.)
| | - Joanna Hetmańczyk
- Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Krakow, Poland; (J.H.); (D.M.)
| | - Piotr Zachariasz
- Center for Hybrid Microelectronics and LTCC, Łukasiewicz Research Network—Institute of Microelectronics and Photonics, Zabłocie 39, 30-701 Krakow, Poland;
| | - Dorota Majda
- Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Krakow, Poland; (J.H.); (D.M.)
| | - Jan Suchanicz
- Department of Mechanical Engineering and Agrophysics, University of Agriculture in Krakow, Balicka 120, 31-120 Krakow, Poland;
| | - Małgorzata Karolus
- Faculty of Science and Technology, Institute of Materials Engineering, University of Silesia in Katowice, 75 Pułku Piechoty 1a, 41-500 Chorzow, Poland; (M.K.); (D.B.); (K.O.)
| | - Dariusz Bochenek
- Faculty of Science and Technology, Institute of Materials Engineering, University of Silesia in Katowice, 75 Pułku Piechoty 1a, 41-500 Chorzow, Poland; (M.K.); (D.B.); (K.O.)
| | - Katarzyna Osińska
- Faculty of Science and Technology, Institute of Materials Engineering, University of Silesia in Katowice, 75 Pułku Piechoty 1a, 41-500 Chorzow, Poland; (M.K.); (D.B.); (K.O.)
| | - Jarosław Jędryka
- Faculty of Electrical Engineering, Czestochowa University of Technology, Armii Krajowej 17, 42-201 Czestochowa, Poland; (J.J.); (A.K.)
| | - Andriy Kityk
- Faculty of Electrical Engineering, Czestochowa University of Technology, Armii Krajowej 17, 42-201 Czestochowa, Poland; (J.J.); (A.K.)
| | - Michał Piasecki
- Institute of Physics, Jan Dlugosz University, Armii Krajowej 13/15, 42-200 Czestochowa, Poland;
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Bukvetskii BV, Kalinovskaya IV. Triboluminescence and crystal structure of the complex [Eu(MBA) 3 Dipy] 2 (HMBA). LUMINESCENCE 2024; 39:e4617. [PMID: 37964730 DOI: 10.1002/bio.4617] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Revised: 10/11/2023] [Accepted: 10/15/2023] [Indexed: 11/16/2023]
Abstract
The atomic structure of the crystals [Eu(MBA)3 Dipy]2 (HMBA) (MBA-аnion toluic acid, Dipy-2,2'-dipyridyl, HMBA-toluic acid), displaying intensive luminescence and triboluminescence was determined using single crystal X-ray diffraction analysis. The triclinic centrosymmetric crystals have the following parameters: a = 10.620(2), b = 11.849(2), c = 14.9868(2) Å, α = 68.297(1), β = 76.172(1), γ = 80.378(1)°, sp.gr. P - 1, Z = 1, ρcalc. = 1.537 g/cm3 . The structure belongs to the insular type and is presented as the isolated complex Eu2 -dimeric formations and outer-sphere HMBA. The structural aspects of the observed luminescence and triboluminescence properties of the compound were discussed, and the cleavage plane role in the process of the crystal destruction was revealed.
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Affiliation(s)
- Boris V Bukvetskii
- Institute of Chemistry, Far Eastern Branch Russian Academy of Sciences, Vladivostok, Russia
| | - Irina V Kalinovskaya
- Institute of Chemistry, Far Eastern Branch Russian Academy of Sciences, Vladivostok, Russia
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Papadopoulos K, Myrovali E, Dubey A, Malletzidou L, Lupascu DC, Shvartsman VV, Wiedwald U, Angelakeris M. Control of physical properties in BiFeO 3nanoparticles via Sm 3+and Co 2+ion doping. NANOTECHNOLOGY 2023; 35:015707. [PMID: 37748475 DOI: 10.1088/1361-6528/acfcc2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Accepted: 09/24/2023] [Indexed: 09/27/2023]
Abstract
Highly crystalline BiFeO3(BFO), Bi0.97Sm0.03FeO3(Sm-BFO) and BiFe0.97Co0.03O3(Co-BFO) nanoparticles (NPs) were utilized as potential magnetic hyperthermia agents at two different frequencies in the radiofrequency (RF) range, and the effect of Sm3+and Co2+ion doping on the physical properties of the material was examined. The thermal behaviour of the as-prepared powders disclosed that the crystallization temperature of the powders is affected by the incorporation of the dopants into the BFO lattice and the Curie transition temperature is decreased upon doping. Vibrational analysis confirmed the formation of the R3c phase in all compounds through the characteristic FT-IR absorbance bands assigned to O-Fe-O bending vibration and Fe-O stretching of the octahedral FeO6group in the perovskite, as well as through Raman spectroscopy. The shift of the Raman-active phonon modes in Sm-BFO and Co-BFO NPs indicated structural distortion of the BFO lattice, which resulted in increased local polarization and enhanced visible light absorption. The aqueous dispersion of Co-BFO NPs showed the highest magnetic hyperthermia performance at 30 mT/765 kHz, entering the therapeutic temperature window for cancer treatment, whereas the heating efficiency of all samples was increased with increasing frequency from 375 to 765 kHz, making our doped nanoparticles to be suitable candidates for potential biomedical applications.
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Affiliation(s)
- Kyrillos Papadopoulos
- School of Physics, Faculty of Sciences, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
- MagnaCharta, Center for Interdisciplinary Research and Innovation (CIRI-AUTH), 57001 Thessaloniki, Greece
| | - Eirini Myrovali
- School of Physics, Faculty of Sciences, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
- MagnaCharta, Center for Interdisciplinary Research and Innovation (CIRI-AUTH), 57001 Thessaloniki, Greece
| | - Astita Dubey
- Institute for Materials Science and Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen, D-45141 Essen, Germany
| | - Lamprini Malletzidou
- School of Physics, Faculty of Sciences, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
| | - Doru C Lupascu
- Institute for Materials Science and Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen, D-45141 Essen, Germany
| | - Vladimir V Shvartsman
- Institute for Materials Science and Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen, D-45141 Essen, Germany
| | - Ulf Wiedwald
- Faculty of Physics and Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen, D-47048 Duisburg, Germany
| | - Mavroeidis Angelakeris
- School of Physics, Faculty of Sciences, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
- MagnaCharta, Center for Interdisciplinary Research and Innovation (CIRI-AUTH), 57001 Thessaloniki, Greece
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5
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Zhang R, Xie H, Liu W, Zhan K, Liu H, Tang Z, Yang C. High-Efficiency Narrow-Band Green-Emitting Manganese(II) Halide for Multifunctional Applications. ACS APPLIED MATERIALS & INTERFACES 2023; 15:47238-47249. [PMID: 37768211 DOI: 10.1021/acsami.3c09518] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/29/2023]
Abstract
Zero-dimensional (0D) Mn2+-based metal halides used as luminescent materials and scintillators have become a research hotspot in the field of photoelectric materials and devices due to their unique composition, structure, and fluorescence properties. It is of great value to explore new Mn2+-based metal halides to achieve multifunctional applications. Herein, the novel 0D Mn2+-based metal halide single crystal (BPTP)2MnBr4 is synthesized by a simple solvent-antisolvent recrystallization method. Under excitation at 468 nm, the (BPTP)2MnBr4 single crystal shows a pronounced narrow-band green luminescence centered at 515 nm derived from the d-d transition of the Mn2+ ion. This emission has a relatively narrow full width at half maximum of 43 nm and a high photoluminescence quantum yield (PLQY) of 82%. In addition, (BPTP)2MnBr4 exhibits good thermal stability at 393 K with a retention of 79% of the initial photoluminescence intensity at 298 K. Benefiting from its strong blue light excitation, high PLQY, and good thermal stability, we manufacture an ideal white light-emitting diode (LED) device using a 460 nm blue LED chip, green-emitting (BPTP)2MnBr4, and commercial K2SiF6:Mn4+ red phosphor. Under 20 mA drive current, the LED shows a high luminous efficiency of 112 lm/W and a wide color gamut of 110.8%, according to the National Television System Committee standard. In addition, (BPTP)2MnBr4 crystals show a strong X-ray absorption. Based on the commercial Lu3Al5O12:Ce3+ scintillator, the calculated light yield of (BPTP)2MnBr4 reaches up to about 136,000 photons/MeV and the detection limit reaches 0.282 μGyair s-1. Additionally, a melt quenching approach is used to construct a (BPTP)2MnBr4 clear glass scintillation screen, realizing a spatial resolution of 10.1 lp/mm. The proper performances of (BPTP)2MnBr4 as phosphor-converted LED materials and the X-ray scintillator with the addition of eco-friendly, low-cost solution processability make 0D Mn2+-based metal halides potential luminescent materials for multifunctional applications.
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Affiliation(s)
- Ruiqing Zhang
- School of Chemistry and Chemical Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, Shaanxi, China
| | - Huidong Xie
- School of Chemistry and Chemical Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, Shaanxi, China
| | - Wei Liu
- School of Chemistry and Chemical Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, Shaanxi, China
| | - Ke Zhan
- School of Chemistry and Chemical Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, Shaanxi, China
| | - Hu Liu
- School of Chemistry and Chemical Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, Shaanxi, China
| | - Zuobin Tang
- School of Chemistry and Chemical Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, Shaanxi, China
| | - Chang Yang
- Engineering Comprehensive Training Center, Xi'an University of Architecture and Technology, Xi'an 710055, Shaanxi, China
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6
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Denisenko YG, Molokeev MS, Jiang X, Sedykh AE, Aleksandrovsky AS, Oreshonkov AS, Roginskii EM, Zhernakov MA, Heuler D, Seuffert M, Lin Z, Andreev OV, Müller-Buschbaum K. Negative Thermal Expansion in the Polymorphic Modification of Double Sulfate β-AEu(SO 4) 2 (A-Rb +, Cs +). Inorg Chem 2023. [PMID: 37490422 DOI: 10.1021/acs.inorgchem.3c01624] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/27/2023]
Abstract
New polymorphic modifications of double sulfates β-AEu(SO4)2 (A-Rb+, Cs+) were obtained by the hydrothermal method, the structure of which differs significantly from the monoclinic modifications obtained earlier by solid-state methods. According to single-crystal diffraction data, it was found that the compounds crystallize in the orthorhombic system, space group Pnna, with parameters β-RbEu(SO4)2: a = 9.4667(4) Å, b = 13.0786(5) Å, c = 5.3760(2) Å, V = 665.61(5) Å3; β-CsEu(SO4)2: a = 9.5278(5) Å, b = 13.8385(7) Å, c = 5.3783(3) Å, V = 709.13(7) Å3. The asymmetric part of the unit cell contains one-half Rb+/Cs+ ion, one-half Eu3+ ion, both in special sites, and one SO42- ion. Both compounds exhibit nonlinear negative thermal expansion. According to the X-ray structural analysis and theoretical calculations, the polarizing effect of the alkali metal ion has a decisive influence on the demonstration of this phenomenon. Experimental indirect band gaps of β-Rb and β-Cs are 4.05 and 4.11 eV, respectively, while the direct band gaps are 4.48 and 4.54 eV, respectively. The best agreement with theoretical calculations is obtained using the ABINIT package employing PAW pseudopotentials with hybrid PBE0 functional, while norm-conserving pseudopotentials used in the frame of CASTEP code and LCAO approach in the Crystal package gave worse agreement. The properties of alkali ions also significantly affect the luminescent properties of the compounds, which leads to a strong temperature dependence of the intensity of the 5D0 → 7F4 transition in β-CsEu(SO4)2 in contrast to much weaker dependence of this kind in β-RbEu(SO4)2.
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Affiliation(s)
- Yuriy G Denisenko
- Institute of Inorganic and Analytical Chemistry, Justus-Liebig-University Gießen, Heinrich-Buff-Ring 17, Gießen 35392, Germany
- Regional Center ″New Generation″, Physics and Mathematics School of the Tyumen Region, Tyumen 625051, Russia
- Department of Science and Innovation, Tyumen State University, Tyumen 625003, Russia
| | - Maxim S Molokeev
- Laboratory of Crystal Physics, Kirensky Institute of Physics Federal Research Center KSC SB RAS, Krasnoyarsk 660036, Russia
- Department of Engineering Physics and Radioelectronic, Siberian Federal University, Krasnoyarsk 660041, Russia
- Department of Physics, Far Eastern State Transport University, Khabarovsk 680021, Russia
| | - Xingxing Jiang
- Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Alexander E Sedykh
- Institute of Inorganic and Analytical Chemistry, Justus-Liebig-University Gießen, Heinrich-Buff-Ring 17, Gießen 35392, Germany
| | - Aleksandr S Aleksandrovsky
- Laboratory of Coherent Optics, Kirensky Institute of Physics Federal Research Center KSC SB RAS, Krasnoyarsk 660036, Russia
- Institute of Nanotechnology, Spectroscopy and Quantum Chemistry, Siberian Federal University, Krasnoyarsk 660041, Russia
| | - Aleksandr S Oreshonkov
- Laboratory of Molecular Spectroscopy, Kirensky Institute of Physics Federal Research Center KSC SB RAS, Krasnoyarsk 660036, Russia
- School of Engineering and Construction, Siberian Federal University, Krasnoyarsk 660041, Russia
| | - Evgenii M Roginskii
- Solid State Spectroscopy Department, Ioffe Institute, St. Petersburg 194021, Russia
| | - Maksim A Zhernakov
- Institute of Inorganic and Analytical Chemistry, Justus-Liebig-University Gießen, Heinrich-Buff-Ring 17, Gießen 35392, Germany
- Chemistry Institute, Kazan Federal University, Kazan 420008, Russia
| | - Dominik Heuler
- Institute of Inorganic and Analytical Chemistry, Justus-Liebig-University Gießen, Heinrich-Buff-Ring 17, Gießen 35392, Germany
| | - Marcel Seuffert
- Institute of Inorganic and Analytical Chemistry, Justus-Liebig-University Gießen, Heinrich-Buff-Ring 17, Gießen 35392, Germany
| | - Zheshuai Lin
- Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Oleg V Andreev
- Department of Inorganic and Physical Chemistry, Tyumen State University, Tyumen 625003, Russia
- Laboratory of the Chemistry of Rare Earth Compounds, Institute of Solid State Chemistry, UB RAS, Yekaterinburg 620137, Russia
| | - Klaus Müller-Buschbaum
- Institute of Inorganic and Analytical Chemistry, Justus-Liebig-University Gießen, Heinrich-Buff-Ring 17, Gießen 35392, Germany
- Center for Materials Research (LaMa), Justus-Liebig-University of Giessen, Gießen 35392, Germany
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Dmitrieva A, Kozlova O, Atuchin V, Milentieva I, Vesnina A, Ivanova S, Asyakina L, Prosekov A. Study of the Effect of Baicalin from Scutellaria baicalensis on the Gastrointestinal Tract Normoflora and Helicobacter pylori. Int J Mol Sci 2023; 24:11906. [PMID: 37569279 PMCID: PMC10419321 DOI: 10.3390/ijms241511906] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Revised: 07/17/2023] [Accepted: 07/23/2023] [Indexed: 08/13/2023] Open
Abstract
The antimicrobial properties of baicalin against H. pylori and several probiotic cultures were evaluated. Baicalin was isolated from a dry plant extract obtained by extraction with water at 70 °C. For isolation, extraction was carried out with n-butanol and purification on a chromatographic column. The antimicrobial potential was assessed by evaluating changes in the optical density of the bacterial suspension during cultivation; additionally, the disk diffusion method was used. During the study, the baicalin concentrations (0.25, 0.5, and 1 mg/mL) and the pH of the medium in the range of 1.5-8.0 were tested. The test objects were: suspensions of H. pylori, Lactobacillus casei, L. brevis, Bifidobacterium longum, and B. teenis. It was found that the greater the concentration of the substance in the solution, the greater the delay in the growth of the strain zone. Thus, the highest antimicrobial activity against H. pylori was observed at pH 1.5-2.0 and a baicalin concentration of 1.00 mg/mL. In relation to probiotic strains, a stimulating effect of baicalin (1.00 mg/mL) on the growth of L. casei biomass at pH 1.5-2.0 was observed. The results open up the prospects for the use of baicalin and probiotics for the treatment of diseases caused by H. pylori.
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Affiliation(s)
- Anastasia Dmitrieva
- Laboratory of Natural Nutraceuticals Biotesting, Kemerovo State University, 650043 Kemerovo, Russia; (A.D.); (I.M.); (A.V.); (S.I.); (L.A.)
| | - Oksana Kozlova
- Department of Bionanotechnology, Kemerovo State University, 650043 Kemerovo, Russia;
| | - Victor Atuchin
- Laboratory of Optical Materials and Structures, Institute of Semiconductor Physics, 630090 Novosibirsk, Russia
- Research and Development Department, Kemerovo State University, 650000 Kemerovo, Russia
- Department of Industrial Machinery Design, Novosibirsk State Technical University, 630073 Novosibirsk, Russia
- R&D Center “Advanced Electronic Technologies”, Tomsk State University, 634034 Tomsk, Russia
| | - Irina Milentieva
- Laboratory of Natural Nutraceuticals Biotesting, Kemerovo State University, 650043 Kemerovo, Russia; (A.D.); (I.M.); (A.V.); (S.I.); (L.A.)
| | - Anna Vesnina
- Laboratory of Natural Nutraceuticals Biotesting, Kemerovo State University, 650043 Kemerovo, Russia; (A.D.); (I.M.); (A.V.); (S.I.); (L.A.)
| | - Svetlana Ivanova
- Laboratory of Natural Nutraceuticals Biotesting, Kemerovo State University, 650043 Kemerovo, Russia; (A.D.); (I.M.); (A.V.); (S.I.); (L.A.)
- Department of General Mathematics and Informatics, Kemerovo State University, 650043 Kemerovo, Russia
| | - Lyudmila Asyakina
- Laboratory of Natural Nutraceuticals Biotesting, Kemerovo State University, 650043 Kemerovo, Russia; (A.D.); (I.M.); (A.V.); (S.I.); (L.A.)
| | - Alexander Prosekov
- Laboratory of Biocatalysis, Kemerovo State University, 650043 Kemerovo, Russia;
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Gaikwad SK, Kharat SP, Haritha K, Kolekar YD, Ramana CV. Effect of Dy 3+ and Tb 3+ Rare-Earth Cation Co-Substitution on the Structure, Magnetic, and Magnetostrictive Properties of Ni-Co-Ferrites. Inorg Chem 2023. [PMID: 37450403 DOI: 10.1021/acs.inorgchem.3c01117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/18/2023]
Abstract
The design and development of electromagnetic and magnetoelectric materials with enhanced properties and performance are desirable for numerous technologies, which are based on integrated electromagnetic materials and components. Nevertheless, engineering the crystalline materials with multi-complex chemistry and multiple cations is challenging. In this context, herein, we report on the effect of rare-earth (RE) cations, namely, Dy3+ and Tb3+, co-substituted into the Co-Ni-mixed ferrite materials for applications in stress/torque sensors. The RE-cations that co-substituted Co-Ni-ferrite materials with a composition of Ni0.8Co0.2Fe2-x(Dy1-yTby)xO4 (x = 0-0.1, y = 0.3; NCFDT) were prepared by the high-temperature solid-state chemical reaction method. The effect of variable composition (x) on the structure, morphology, chemical bonding, and magnetic properties of NCFDT materials is investigated in detail, and the structure-property optimization enabled realizing magnetostrictive NCFDT for sensor applications. X-ray diffraction analysis coupled with Rietveld refinement confirms the face-centered cubic crystal structure. Chemical bonding analysis made using Raman spectroscopic and Fourier transform infrared spectroscopic measurements validates the active modes corresponding to the spinel ferrite structure. The effect of Dy3+ and Tb3+ substitution is primarily seen in the grain size (range of 5-15 μm), as evident from the scanning electron microscopy patterns. Energy-dispersive spectroscopy confirms the presence of all constituent elements with expected composition and without any impurities. The magnetic property measurements indicate that the remnant magnetization (Mr) increases from 0.06 to 0.17 μB/f.u. with the rare-earth (Dy and Tb) substitution and has achieved the maximum squareness ratio (Mr/Ms) = 0.097 at x = 0.10. To validate their application potential in magneto-mechanical sensors, we have measured the magnetostriction coefficients (λ11 and λ12), which demonstrate high values of λ11 = -92 ppm (along the parallel direction) and λ12 = 66 ppm (along the perpendicular direction) for NCFDT with x = 0.05 at H = 7000 Oe. In addition, the maximum value of strain sensitivity is observed, particularly dλ11dH = -0.764 nm/A whereas dλ12dH = 0.361 nm/A. The correlation between strain sensitivity (dλ/dH) and susceptibility (dM/dH), as derived from magnetostriction and magnetization measurements, respectively, is established. The outcomes of this study indicate that Ni-Co-ferrites with Dy3+ and Tb3+ substitution are suitable for stress/torque sensors. These NCFDT ferrites may also be useful as a necessary constitutive phase for the manufacture of magnetoelectric composite materials, making them appropriate for magnetic field sensors and energy harvesting applications.
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Affiliation(s)
- Swati K Gaikwad
- Department of Physics, Savitribai Phule Pune University, Pune 411007, Maharashtra, India
- Department of Physics, Fergusson College (Autonomous), Pune 411004, Maharashtra, India
| | - Shahaji P Kharat
- Department of Physics, Savitribai Phule Pune University, Pune 411007, Maharashtra, India
- Department of Physics, Fergusson College (Autonomous), Pune 411004, Maharashtra, India
| | - Keerthi Haritha
- Environmental Science and Engineering, University of Texas at El Paso, 500 W. University Ave., El Paso, Texas 79968, United States
| | - Yesh D Kolekar
- Department of Physics, Savitribai Phule Pune University, Pune 411007, Maharashtra, India
| | - C V Ramana
- Centre for Advanced Materials Research (CMR), University of Texas at El Paso, El Paso, Texas 79968, United States
- Department of Aerospace & Mechanical Engineering, University of Texas at El Paso, El Paso, Texas 79968, United States
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9
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Zhu H, Pan Y, Peng C, Ding Y, Lian H, Lin J, Li L. Precise Hue Control in a Single-Component White-Light Emitting Perovskite Cs 2 SnCl 6 through Defect Engineering Based on La 3+ Doping. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2300862. [PMID: 36811284 DOI: 10.1002/smll.202300862] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Indexed: 05/25/2023]
Abstract
Single-component white light emitters based on the all-inorganic perovskites will act as outstanding candidates for applications in solid-state lighting thanks to their abundant energy states for self-trapped excitons (STE) with ultra-high photoluminescence (PL) efficiency. Here, a complementary white light is realized by dual STEs emissions with blue and yellow colors in a single-component perovskite Cs2 SnCl6 :La3+ microcrystal (MC). The dual emission bands centered at 450 and 560 nm are attributed to the intrinsic STE1 emission in host lattice Cs2 SnCl6 and the STE2 emission induced by the heterovalent La3+ doping, respectively. The hue of the white light can be tunable through energy transfer between the two STEs, the variation of excitation wavelength, and the Sn4+ /Cs+ ratios in starting materials. The effects of the doping heterovalent La3+ ions on the electronic structure and photophysical properties of the Cs2 SnCl6 crystals and the created impurity point defect states are investigated by the chemical potentials calculated using density functional theory (DFT) and confirmed by the experimental results. These results provide a facile approach to gaining novel single-component white light emitter and offer fundamental insights into the defect chemistry in the heterovalent ions doped perovskite luminescent crystals.
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Affiliation(s)
- Hong Zhu
- Key Laboratory of Carbon Materials of Zhejiang Province, College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, 325035, P. R. China
| | - Yuexiao Pan
- Key Laboratory of Carbon Materials of Zhejiang Province, College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, 325035, P. R. China
| | - Chengdong Peng
- Key Laboratory of Carbon Materials of Zhejiang Province, College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, 325035, P. R. China
| | - Yihong Ding
- Key Laboratory of Carbon Materials of Zhejiang Province, College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, 325035, P. R. China
| | - Hongzhou Lian
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, P. R. China
| | - Jun Lin
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, P. R. China
| | - Liyi Li
- Innovative Drug and Imaging Agent R&D Center, Research Institute of Tsinghua, Pearl River Delta, Guangzhou, P. R. China
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10
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Tang H, Yuan K, Zheng P, Xiao T, Zhang H, Zhao X, Zhou W, Wang S, Liu W. Synthesis, crystal structure and optical properties of the quasi-0D lead-free organic-inorganic hybrid crystal (C6H14N)3Bi2I9·H2O. J SOLID STATE CHEM 2023. [DOI: 10.1016/j.jssc.2023.124011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/31/2023]
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11
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Gupta I, Singh D, Singh S, Kumar P, Bhagwan S, Kumar V. Structural and photophysical measurements of Er3+ doped Gd4Al2O9 nanophosphors for NUV excitable solid-state lighting applications. Chem Phys Lett 2023. [DOI: 10.1016/j.cplett.2023.140350] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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12
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Bej S, Banerjee P. "Caught in the Act" @ disruption of A-ET-E process in the recognition of F - by a lamellar Eu III-MOF in heterogeneous manner with logic gate construction: From protagonist idea to implementation world. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2022; 283:121764. [PMID: 35988472 DOI: 10.1016/j.saa.2022.121764] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2022] [Revised: 08/05/2022] [Accepted: 08/11/2022] [Indexed: 06/15/2023]
Abstract
Development of cost-effective and reliable fluoride sensor for assessing water quality of natural water samples is of immense importance in developing countries as they can provide an easy platform for safeguarding human health. These sensors should be as simple as possible to be fabricated locally by layman. In this context, EuIII-based MOFs provide trustable platform with bright luminescence in the visible region due to their absorbance-energy transfer-emission (A-ET-E) process. Herein the designed synthesis of a 2D porous coordination polymer, Eu@CMERI, has been carried out following a solvothermal reaction route. The compound shows selective "turn-off" sensing of fluoride in heterogeneous manner from purely aqueous phase and other biological matrices with a detection limit of 28.4 ppb and it carries enormous importance for drinking water analysis under internal regulations. Prohibition of A-ET-E cycle of the EuIII-MOF is proposed to be the prime reason for fluorescence quenching upon interaction with F-. DFT studies also revealed that lowest △EHOMO-LUMO and highest chemical potential value (μ) of F- are the driving forces for selectivity of EuIII-MOF towards the targeted anion. The high stability of the porous frameworks along with its interesting sensing features, including fast response and wide linear detection range etc. instigated us not to restrict the chemistry of EuIII-MOFs at protagonist idea rather to explore its application to real-world analysis. Based on the fluorescence signal exhibited by the targeted analyte, an integrated AND-OR logic gate has also been fabricated which depicts its applicability in molecular electronics. In view of the modular design principle of our polymeric probe, the proposed strategy could open a new horizon to construct powerful sensing materials for ultrafast detection of other important pollutants in the domain of supramolecular chemistry in coming days.
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Affiliation(s)
- Sourav Bej
- Surface Engineering & Tribology Group, CSIR-Central Mechanical Engineering Research Institute, Mahatma Gandhi Avenue, Durgapur 713209, India; Academy of Scientific & Innovative Research (AcSIR), Ghaziabad 201002, Uttar Pradesh, India
| | - Priyabrata Banerjee
- Surface Engineering & Tribology Group, CSIR-Central Mechanical Engineering Research Institute, Mahatma Gandhi Avenue, Durgapur 713209, India; Academy of Scientific & Innovative Research (AcSIR), Ghaziabad 201002, Uttar Pradesh, India.
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13
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Zhu W, Wang Q, Yang M, Li M, Zheng C, Li D, Zhang X, Cheng B, Dai Z. Reactive Flame-Retardant Cotton Fabric Coating: Combustion Behavior, Durability, and Enhanced Retardant Mechanism with Ion Transfer. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:4048. [PMID: 36432335 PMCID: PMC9695240 DOI: 10.3390/nano12224048] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/22/2022] [Revised: 10/27/2022] [Accepted: 11/14/2022] [Indexed: 06/16/2023]
Abstract
In recent years, we have witnessed numerous indoor fires caused by the flammable properties of cotton. Flame-retardant cotton deserves our attention. A novel boric acid and diethylenetriaminepenta (methylene-phosphonic acid) (DTPMPA) ammonium salt-based chelating coordination flame retardant (BDA) was successfully prepared for cotton fabrics, and a related retardant mechanism with ion transfer was investigated. BDA can form a stable chemical and coordination bond on the surface of cotton fibers by a simple three-curing finishing process. The limiting oxygen index (LOI) value of BDA-90 increased to 36.1%, and the LOI value of cotton fabric became 30.3% after 50 laundering cycles (LCs) and exhibited excellent durable flame retardancy. Fourier-transform infrared (FTIR) spectroscopy, X-ray photoelectron spectroscopy (XPS), and scanning electron microscopy (SEM) methods were used to observe the bonding mode and morphology of BDA on cotton fibers. A synergistic flame-retardant mechanism of condensed and gas phases was concluded from thermogravimetry (TG), cone calorimeter tests, and TG-FTIR. The test results of whiteness and tensile strength showed that the physical properties of BDA-treated cotton fabric were well maintained.
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Affiliation(s)
- Wenju Zhu
- Tianjin Key Laboratory of Green Chemical Technology and Process Engineering, State Key Laboratory of Separation Membrane and Membrane Processes, School of Chemical Engineering, Tiangong University, Tianjin 300387, China
| | - Qing Wang
- Tianjin Key Laboratory of Green Chemical Technology and Process Engineering, State Key Laboratory of Separation Membrane and Membrane Processes, School of Chemical Engineering, Tiangong University, Tianjin 300387, China
| | - Mingyang Yang
- Tianjin Key Laboratory of Green Chemical Technology and Process Engineering, State Key Laboratory of Separation Membrane and Membrane Processes, School of Chemical Engineering, Tiangong University, Tianjin 300387, China
| | - Minjing Li
- Tianjin Key Laboratory of Green Chemical Technology and Process Engineering, State Key Laboratory of Separation Membrane and Membrane Processes, School of Chemical Engineering, Tiangong University, Tianjin 300387, China
| | - Chunming Zheng
- Tianjin Key Laboratory of Green Chemical Technology and Process Engineering, State Key Laboratory of Separation Membrane and Membrane Processes, School of Chemical Engineering, Tiangong University, Tianjin 300387, China
| | - Dongxiang Li
- Tianjin Key Laboratory of Green Chemical Technology and Process Engineering, State Key Laboratory of Separation Membrane and Membrane Processes, School of Chemical Engineering, Tiangong University, Tianjin 300387, China
| | - Xiaohan Zhang
- Tianjin Key Laboratory of Green Chemical Technology and Process Engineering, State Key Laboratory of Separation Membrane and Membrane Processes, School of Chemical Engineering, Tiangong University, Tianjin 300387, China
| | - Bowen Cheng
- College of Chemistry Engineering & Materials Science, Tianjin University Science & Technology, Tianjin 300457, China
| | - Zhao Dai
- Tianjin Key Laboratory of Green Chemical Technology and Process Engineering, State Key Laboratory of Separation Membrane and Membrane Processes, School of Chemical Engineering, Tiangong University, Tianjin 300387, China
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Khandelwal M, Kumawat A, Misra KP, Khangarot RK. Efficient antibacterial activity in copper oxide nanoparticles biosynthesized via Jasminum sambac flower extract. PARTICULATE SCIENCE AND TECHNOLOGY 2022. [DOI: 10.1080/02726351.2022.2129117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/10/2022]
Affiliation(s)
- Manisha Khandelwal
- Department of Chemistry, University College of Science, Mohanlal Sukhadia University, Udaipur, India
| | - Ashok Kumawat
- Department of Physics, School of Basic Sciences, Manipal University Jaipur, Jaipur, India
| | - Kamakhya Prakash Misra
- Department of Physics, School of Basic Sciences, Manipal University Jaipur, Jaipur, India
| | - Rama Kanwar Khangarot
- Department of Chemistry, University College of Science, Mohanlal Sukhadia University, Udaipur, India
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15
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Gupta SK, Abdou H, Segre CU, Mao Y. Excitation-Dependent Photoluminescence of BaZrO 3:Eu 3+ Crystals. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:3028. [PMID: 36080065 PMCID: PMC9457899 DOI: 10.3390/nano12173028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/24/2022] [Revised: 08/25/2022] [Accepted: 08/25/2022] [Indexed: 06/15/2023]
Abstract
The elucidation of local structure, excitation-dependent spectroscopy, and defect engineering in lanthanide ion-doped phosphors was a focal point of research. In this work, we have studied Eu3+-doped BaZrO3 (BZOE) submicron crystals that were synthesized by a molten salt method. The BZOE crystals show orange-red emission tunability under the host and dopant excitations at 279 nm and 395 nm, respectively, and the difference is determined in terms of the asymmetry ratio, Stark splitting, and intensity of the uncommon 5D0 → 7F0 transition. These distinct spectral features remain unaltered under different excitations for the BZOE crystals with Eu3+ concentrations of 0-10.0%. The 2.0% Eu3+-doped BZOE crystals display the best optical performance in terms of excitation/emission intensity, lifetime, and quantum yield. The X-ray absorption near the edge structure spectral data suggest europium, barium, and zirconium ions to be stabilized in +3, +2, and +4 oxidation states, respectively. The extended X-ray absorption fine structure spectral analysis confirms that, below 2.0% doping, the Eu3+ ions occupy the six-coordinated Zr4+ sites. This work gives complete information about the BZOE phosphor in terms of the dopant oxidation state, the local structure, the excitation-dependent photoluminescence (PL), the concentration-dependent PL, and the origin of PL. Such a complete photophysical analysis opens up a new pathway in perovskite research in the area of phosphors and scintillators with tunable properties.
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Affiliation(s)
- Santosh K. Gupta
- Radiochemistry Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India
- Homi Bhabha National Institute, Anushakti Nagar, Mumbai 400094, India
| | - Hisham Abdou
- Department of Chemistry, University of Texas Rio Grande Valley, 1201 West University Drive, Edinburg, TX 78539, USA
| | - Carlo U. Segre
- Center for Synchrotron Radiation Research and Instrumentation and Department of Physics, Illinois Institute of Technology, Chicago, IL 60616, USA
| | - Yuanbing Mao
- Department of Chemistry, Illinois Institute of Technology, 3105 South Dearborn Street, Chicago, IL 60616, USA
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16
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Liu H, Wang H, Zheng X, Wang P, Zhang Y. Investigation on anomalous thermal enhancement and temperature sensing properties of Zn 3Mo 2O 9:Yb 3+/RE 3+ (RE = Er/Ho) phosphors. Dalton Trans 2022; 51:13106-13118. [PMID: 35975711 DOI: 10.1039/d2dt01972h] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
In this work, Yb3+/RE3+ (RE = Er/Ho) co-doped Zn3Mo2O9 phosphors were synthesized by high-temperature solid-state reactions. Under 980 nm excitation, the upconversion (UC) luminescence thermal enhancement was obtained for Zn3Mo2O9:Yb3+/RE3+ phosphors. The green emission intensity of the Zn3Mo2O9:Yb3+/Er3+ sample was increased 5 times from 373 to 573 K. The red emission intensity of the Zn3Mo2O9:Yb3+/Ho3+ sample was enhanced 7.92 times. The anomalous thermal enhancement of UC emission was induced by the negative thermal expansion (NTE) of the Zn3Mo2O9 host. The energy transfer rate from the sensitizer (Yb3+) to the activator (RE3+) was enhanced because of the lattice contraction and distortion for NTE materials. Compared with the UC emission of Er3+single doped Zn3Mo2O9 sample, the luminescence thermal enhancement was absent, which contributed to proving the physical mechanism. The temperature sensing properties of the Zn3Mo2O9:Yb3+/Er3+ and Zn3Mo2O9:Yb3+/Ho3+ samples were also investigated based on the fluorescence intensity ratio (FIR) technology. The absolute sensitivity (SA) and relative sensitivity (SR) of Zn3Mo2O9:Yb3+/Er3+ phosphor reached 0.0060 K-1 and 0.72% K-1, which is based on the thermal coupling levels (2H11/2, 4S3/2) FIR of Er3+ ions. In addition, the SA and SR of Zn3Mo2O9:Yb3+/Ho3+ phosphor reached 0.0119 K-1 and 0.86% K-1, that is based on the non-thermal coupling levels (5S2/5F4, 5F5) FIR of Ho3+ ions. The research results indicate that the Zn3Mo2O9 host shows NET. The Yb3+/RE3+ co-doped Zn3Mo2O9 phosphors are good materials for highly sensitive optical temperature measurement, which can be used to develop thermally enhanced ratiometric optical thermometers.
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Affiliation(s)
- Hang Liu
- School of Electrical and Computer Engineering, Jilin Jianzhu University, Changchun 130118, China.
| | - Haiyan Wang
- School of Electrical and Computer Engineering, Jilin Jianzhu University, Changchun 130118, China.
| | - Xingke Zheng
- School of Electrical and Computer Engineering, Jilin Jianzhu University, Changchun 130118, China.
| | - Pengcheng Wang
- School of Electrical and Computer Engineering, Jilin Jianzhu University, Changchun 130118, China.
| | - Yuhong Zhang
- School of Electrical and Computer Engineering, Jilin Jianzhu University, Changchun 130118, China.
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17
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Atchudan R, Perumal S, Joo J, Lee YR. Synthesis and Characterization of Monodispersed Spherical Calcium Oxide and Calcium Carbonate Nanoparticles via Simple Pyrolysis. NANOMATERIALS 2022; 12:nano12142424. [PMID: 35889648 PMCID: PMC9321580 DOI: 10.3390/nano12142424] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/14/2022] [Revised: 07/12/2022] [Accepted: 07/13/2022] [Indexed: 11/16/2022]
Abstract
In this study, calcium carbonate nanoparticles (CCNPs) and calcium oxide nanoparticles (CONPs) are synthesized by the carbonization/calcination of calcium oleate. CONPs are an essential inorganic material, and they are used as catalysts and as effective chemisorbents for toxic gases. CCNPs are widely used in plastics, printing ink, and medicines. Here, calcium oleate is used as a starting material for the preparation of CCNPs and CONPs. This calcium oleate is prepared from calcium hydroxide and oleic acid in ethanol under mild reflux conditions. The effect of the calcination temperature of calcium oleate is examined during the synthesis of CCNPs and CONPs. By simple carbonization/calcination, calcite-type CCNPs and CONPs are prepared at <550 °C and >600 °C, respectively. The synthesized nanomaterials are analyzed by various physicochemical characterization techniques such as X-ray diffraction (XRD), Fourier transform infrared spectroscopy, thermogravimetric analysis (TGA) with derivative thermogravimetry (DTG), and scanning electron microscopy (SEM) with energy dispersive X-ray analysis. An X-ray diffractometer and the Scherrer formula are used to analyze the crystalline phase and crystallite size of prepared nanoparticles. TGA techniques confirm the thermal stability of the calcium oleate, CCNPs, and CONPs. The SEM analysis illustrates the dispersive behavior and cubic/spherical morphologies of CCNPs/CONPs. Furthermore, the obtained results are compared to the CCNP and CONP samples prepared using calcium hydroxide. As a result, the carbonization/calcination of calcium oleate produces monodispersed CONPs, which are then compared to the CONPs from calcium hydroxide. Additionally, from calcium oleate, CONPs can be prepared on a large scale in a cheap, convenient way, using simple equipment which can be applied in various applications.
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Affiliation(s)
- Raji Atchudan
- Department of Applied Chemistry, Kyungpook National University, Daegu 41566, Korea
- School of Chemical Engineering, Yeungnam University, Gyeongsan 38541, Korea
- Department of Chemistry, Saveetha School of Engineering, Saveetha Institute of Medical and Technical Sciences, Chennai 602105, Tamil Nadu, India
- Correspondence: (R.A.); (J.J.); (Y.R.L.)
| | - Suguna Perumal
- Department of Chemistry, Sejong University, Seoul 143747, Korea;
| | - Jin Joo
- Department of Applied Chemistry, Kyungpook National University, Daegu 41566, Korea
- Correspondence: (R.A.); (J.J.); (Y.R.L.)
| | - Yong Rok Lee
- School of Chemical Engineering, Yeungnam University, Gyeongsan 38541, Korea
- Correspondence: (R.A.); (J.J.); (Y.R.L.)
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18
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Exploration of the Crystal Structure and Thermal and Spectroscopic Properties of Monoclinic Praseodymium Sulfate Pr2(SO4)3. Molecules 2022; 27:molecules27133966. [PMID: 35807213 PMCID: PMC9267875 DOI: 10.3390/molecules27133966] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Revised: 06/15/2022] [Accepted: 06/17/2022] [Indexed: 02/01/2023] Open
Abstract
Praseodymium sulfate was obtained by the precipitation method and the crystal structure was determined by Rietveld analysis. Pr2(SO4)3 is crystallized in the monoclinic structure, space group C2/c, with cell parameters a = 21.6052 (4), b = 6.7237 (1) and c = 6.9777 (1) Å, β = 107.9148 (7)°, Z = 4, V = 964.48 (3) Å3 (T = 150 °C). The thermal expansion of Pr2(SO4)3 is strongly anisotropic. As was obtained by XRD measurements, all cell parameters are increased on heating. However, due to a strong increase of the monoclinic angle β, there is a direction of negative thermal expansion. In the argon atmosphere, Pr2(SO4)3 is stable in the temperature range of T = 30–870 °C. The kinetics of the thermal decomposition process of praseodymium sulfate octahydrate Pr2(SO4)3·8H2O was studied as well. The vibrational properties of Pr2(SO4)3 were examined by Raman and Fourier-transform infrared absorption spectroscopy methods. The band gap structure of Pr2(SO4)3 was evaluated by ab initio calculations, and it was found that the valence band top is dominated by the p electrons of oxygen ions, while the conduction band bottom is formed by the d electrons of Pr3+ ions. The exact position of ZPL is determined via PL and PLE spectra at 77 K to be at 481 nm, and that enabled a correct assignment of luminescent bands. The maximum luminescent band in Pr2(SO4)3 belongs to the 3P0 → 3F2 transition at 640 nm.
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Denisenko YG, Sedykh AE, Oreshonkov AS, Molokeev MS, Azarapin NO, Sal'nikova EI, Chimitova OD, Andreev OV, Razumkova IA, Müller‐Buschbaum K. Europium (II) Sulfate EuSO
4
: Synthesis Methods, Crystal and Electronic Structure, Luminescence Properties. Eur J Inorg Chem 2022. [DOI: 10.1002/ejic.202200043] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Yuriy G. Denisenko
- Department of General and Special Chemistry Industrial University of Tyumen Tyumen 625000 Russia
- Institute of Inorganic and Analytical Chemistry Justus-Liebig-University of Giessen 35392 Giessen Germany
- Department of Inorganic and Physical Chemistry Tyumen State University Tyumen 625003 Russia
| | - Alexander E. Sedykh
- Institute of Inorganic and Analytical Chemistry Justus-Liebig-University of Giessen 35392 Giessen Germany
| | - Aleksandr S. Oreshonkov
- Laboratory of Molecular Spectroscopy Kirensky Institute of Physics Federal Research Center KSC SB RAS Krasnoyarsk 660036 Russia
- School of Engineering and Construction Siberian Federal University Krasnoyarsk 660041 Russia
| | - Maxim S. Molokeev
- Institute of Engineering Physics and Radioelectronics Siberian Federal University Krasnoyarsk 660041 Russia
- Laboratory of Crystal Physics Kirensky Institute of Physics Federal Research Center KSC SB RAS Krasnoyarsk 660036 Russia
- Research and Development Department Kemerovo State University Kemerovo 650000 Russia
| | - Nikita O. Azarapin
- Department of Inorganic and Physical Chemistry Tyumen State University Tyumen 625003 Russia
| | - Elena I. Sal'nikova
- Department of Inorganic and Physical Chemistry Tyumen State University Tyumen 625003 Russia
- Research Department Northern Trans-Ural Agricultural University Tyumen 625003 Russia
| | | | - Oleg V. Andreev
- Department of Inorganic and Physical Chemistry Tyumen State University Tyumen 625003 Russia
- Laboratory of the Chemistry of Rare Earth Compounds Institute of Solid State Chemistry, UB RAS Ekaterinburg 620137 Russia
| | - Illaria A. Razumkova
- Department of Inorganic and Physical Chemistry Tyumen State University Tyumen 625003 Russia
| | - Klaus Müller‐Buschbaum
- Institute of Inorganic and Analytical Chemistry Justus-Liebig-University of Giessen 35392 Giessen Germany
- Center for Materials Research (LaMa) Justus-Liebig-University of Giessen Heinrich-Buff-Ring 16 35392 Gießen Germany
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20
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Wu X, Dong H, Chen T, Guo Y, Qin S. Low-temperature synthesis of NaRE(WO4)2 films via anion exchange from Layered rare-earth hydroxides (LRHs) films, phase/morphology evolution and photoluminescence. CrystEngComm 2022. [DOI: 10.1039/d2ce00950a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Alkaline lanthanide tungstates NaRE(WO4)2 (RE = La-Ho, and Y) films were hydrothermally synthesized via anion exchange using the electrodeposited layered rare-earth hydroxide (RE2(OH)5NO3·nH2O) films as precursor template in the presence...
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21
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Pasechnik LA, Peshehonova AO, Lipina OА, Medyankina IS, Enyashin A, Chufarov AY, Tyutyunnik AP. Co-crystallization of red emitting (NH 4) 3Sc(SO 4) 3:Eu 3+ microfibers: structure-luminescence relationship for promising application in optical thermometry. CrystEngComm 2022. [DOI: 10.1039/d2ce00478j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
(NH4)3Sc(SO4)3:Eu3+ phosphor has been synthesized as rod-like microparticles by the crystallization from an aqueous solution. Its crystal structure belongs to monoclinic system, space group P21/c, Z = 4. An enantiotropic...
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22
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Ta S, Zhang H, Wu W, Wang Y, Zhang P, Cheng Z, Xu S, Goodman BA, Deng W. Luminescence properties of Eu 2O 3-doped ZrO 2–Y 2O 3 single crystals. CrystEngComm 2022. [DOI: 10.1039/d2ce01054b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The optical properties of the Eu3+-doped Y2O3-stabilized ZrO2 crystals demonstrate potential for various applications based on their intense emission of orange light.
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Affiliation(s)
- Shengdi Ta
- School of Physical Science and Technology, Guangxi University, 100 East Daxue Road, Nanning 530004, Guangxi, People's Republic of China
| | - Huiting Zhang
- School of Physical Science and Technology, Guangxi University, 100 East Daxue Road, Nanning 530004, Guangxi, People's Republic of China
| | - Wenxia Wu
- School of Physical Science and Technology, Guangxi University, 100 East Daxue Road, Nanning 530004, Guangxi, People's Republic of China
| | - Yazhao Wang
- School of Physical Science and Technology, Guangxi University, 100 East Daxue Road, Nanning 530004, Guangxi, People's Republic of China
| | - Peng Zhang
- School of Physical Science and Technology, Guangxi University, 100 East Daxue Road, Nanning 530004, Guangxi, People's Republic of China
| | - Zeyu Cheng
- School of Physical Science and Technology, Guangxi University, 100 East Daxue Road, Nanning 530004, Guangxi, People's Republic of China
| | - Shoulei Xu
- School of Physical Science and Technology, Guangxi University, 100 East Daxue Road, Nanning 530004, Guangxi, People's Republic of China
| | - Bernard Albert Goodman
- School of Physical Science and Technology, Guangxi University, 100 East Daxue Road, Nanning 530004, Guangxi, People's Republic of China
| | - Wen Deng
- School of Physical Science and Technology, Guangxi University, 100 East Daxue Road, Nanning 530004, Guangxi, People's Republic of China
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