Article
Chemistry, Physical
Polina A. Ryabochkina, Anna Egorysheva, Svetlana Golodukhina, Svetlana A. Khrushchalina, Alina D. Taratynova, Ivan A. Yurlov
Summary: Novel phosphors were synthesized and doped with various rare earth ions in this study, showing different emission properties influenced by the host type and the rare earth ion coordination environment. The co-doping of Eu3+, Dy3+, and Tb3+ ions resulted in a color shift in the emission, demonstrating the potential for tunable luminescent materials.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Multidisciplinary
Xiang-Gang Zuo, Yi Wang, Lei Wei, Xian-Shun Lv, Yang-Bin Fu, Jing Li, Yuan-Yuan Zhang, Xu-Ping Wang, Bing Liu, Yu-Guo Yang
Summary: In this study, Eu3+/Tb3+ doped LGS phosphors were synthesized with excellent performance, and the effects of doping on the lattice structure and energy transfer mechanism were investigated, leading to optimized luminescence properties.
Article
Materials Science, Ceramics
Fengfeng Chi, Liangliang Pan, Bin Jiang, Zhangchao Ji, Jie Cheng, Bing Wang, Xiantao Wei, Shengli Liu
Summary: Tb3+ and Eu3+ doped La4GeO8 phosphors with multicolor emission were synthesized and their photoluminescence properties were investigated. The energy transfer from Tb3+ to Eu3+ in La4GeO8 is attributed to quadrupole-quadrupole interaction. The La4GeO8:0.07Tb3+,0.01Eu3+ phosphor exhibits good thermal stability with activation energies of 0.186 eV and 0.187 eV for Tb3+ and Eu3+ ions, respectively. By adjusting the content ratio of Eu3+ to Tb3+, the La4GeO8:Tb3+,Eu3+ phosphors can achieve multicolor luminescence and tunable chromaticity. These findings suggest that La4GeO8:Tb3+,Eu3+ phosphors are promising for solid-state lighting applications.
CERAMICS INTERNATIONAL
(2023)
Article
Optics
Erlei Wang, Kun Feng, Jia Li, Xiaodong Zhou, Xianke Sun
Summary: A series of Bi3+/Tb3+/Eu3+ doped NaYGeO4 phosphors were synthesized. The emission of the phosphors is dependent on the doping concentration and excitation wavelength, showing potential for tunable emission from blue to different regions. Energy transfer mechanisms between Bi3+ and Tb3+/Eu3+ were speculated based on the luminescence characteristics.
JOURNAL OF LUMINESCENCE
(2022)
Article
Chemistry, Analytical
Hong-Yu Zou, Xi-Gui Wang
Summary: A series of ZnWO4:Eu3+,Tb3+ phosphors were prepared using a co-precipitation method at room temperature, and characterized through various techniques. The material exhibited tunable properties and can be used in light-emitting diodes.
Article
Chemistry, Inorganic & Nuclear
Ze Wang, Benfu Qian, Fangke Wang, Qianran Zhao, Yulu Wang, Haifeng Zou, Yanhua Song, Xiuqing Zhou, Ye Sheng
Summary: Uniform and well-dispersed SiO2:x%Tb3+@Lu2O3:y%Eu3+ core-shell spherical phosphors were successfully synthesized, demonstrating that multicolor luminescence could be achieved by changing the doping ratio of Eu3+ or excitation wavelengths. Coating the Lu2O3:Eu3+ layer uniformly on the surface of SiO2:Tb3+ spheres resulted in stronger luminescence intensity, longer fluorescence lifetime, and higher energy transfer efficiency. These results provide a new approach for enhancing luminescence and achieving multicolor luminescence.
INORGANIC CHEMISTRY
(2021)
Article
Multidisciplinary Sciences
Rimma S. Bubnova, Andrey P. Shablinskii, Alexey V. Povolotskiy, Olga Yu. Shorets, Valery L. Ugolkov, Sergey N. Volkov, Valentina A. Yukhno, Stanislav K. Filatov
Summary: A novel Ba3Sr3B4O12: Eu3+ phosphor was synthesized by crystallization from a melt. The crystal structure of Ba-3(Sr3-1.5xEux)B4O12 solid solutions, belonging to the anti-zeolite family of borates, was refined. The Ba3Sr2.625Eu0.25B4O12 borate exhibited a new crystal structure type and demonstrated the strongest luminescent intensity among the solid solutions.
Article
Multidisciplinary Sciences
Andrey P. Shablinskii, Alexey V. Povolotskiy, Artem A. Yuriev, Yaroslav P. Biryukov, Rimma S. Bubnova, Margarita S. Avdontceva, Svetlana Yu. Janson, Stanislav K. Filatov
Summary: The novel red-emitting BaBi2-xEuxB4O10 (x = 0.05, 0.1, 0.2, 0.25, 0.3, 0.4, 0.5, 0.6) phosphors were synthesized by crystallization from a glass. The distribution of Eu3+ ions over cation sites was refined using X-ray diffraction data. Emission and excitation spectra of the Eu3+-doped BaBi2B4O10 phosphors were investigated, and the optimal concentration was found to be x = 0.4. The chromaticity coordinates of BaBi2B4O10:Eu3+ (x = 0.4) phosphor were close to the NTSC standard values for commercial red phosphors. These results suggest that BaBi2B4O10:Eu3+ phosphors are promising candidates for solid state lighting applications.
Article
Optics
Xin Zhang, Junfeng Li, YuMei Shu, Kun Luo, Hengquan Liu, Peicong Zhang, Yi Huang, Guosheng Liu, Yi Fan
Summary: This article discusses the synthesis of tunable CaZrO3 phosphors through citric acid-fueled combustion method and investigates the impact of different dopant ions on their luminescent properties, providing valuable insights for the development of W-LED devices.
JOURNAL OF LUMINESCENCE
(2022)
Article
Materials Science, Multidisciplinary
T. Malyi, V Tsiumra, V. Vistovskyy, N. Mitina, N. Musat, H. Stryhanyuk, A. Kondyr, A. Zaichenko, A. Voloshinovskii
Summary: Template synthesis with heterofunctional oligoperoxide was used to obtain inorganic nanoparticles of controlled size, which showed reduced aggregation and higher luminescence efficiency even at high temperatures.
Article
Materials Science, Multidisciplinary
Xuan Gu, Xiao-Yu Sun, Zheng He, Li-Dan Xu, Ming-Fang Shi
Summary: The study demonstrates the energy transfer from Tb3+ to Eu3+ in Tb3+/Eu3+ codoped Y2Mg2Al2Si2O12 phosphors, with the efficiency increasing with the concentration of Eu3+. This energy transfer results in a noticeable change in emission color.
ECS JOURNAL OF SOLID STATE SCIENCE AND TECHNOLOGY
(2021)
Article
Chemistry, Physical
Atsunori Hashimoto, Jumpei Ueda, Yasushi Aoki, Pieter Dorenbos, Setsuhisa Tanabe
Summary: RE2O2S:Eu3+-Ln(3+) (RE = La, Gd, Y, Lu; Ln = Pr, Tb) samples were prepared and studied as red persistent phosphors. Eu3+-singly doped RE2O2S showed weak TL glow peaks, but additional strong TL peaks were observed by codoping Pr3+ or Tb3+ ions. The PersL and TL spectra only showed luminescence from Eu3+, indicating that Eu3+ acts as a recombination center while Pr3+ and Tb3+ ions act as hole trap centers. La2O2S:Eu3+-Pr3+ was found to be the best composition, displaying strong red persistent luminescence at ambient temperature.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Optics
Qiang Ren, Yujing Zhao, Xiulan Wu, Ou Hai
Summary: The research successfully synthesized single-phase phosphor samples co-doped with Tb3+/Eu3+/Tm3+ in LaAl2.03(B4O10)O-0.54, demonstrating potential application value in the field of white-emitting phosphors.
OPTICS AND LASER TECHNOLOGY
(2021)
Article
Chemistry, Inorganic & Nuclear
Jiaoying Wang, Minghui Tai, Zhikui Yu, Shuo Kang, Dailai Jin, Longcheng Wang
Summary: A novel single-phase luminescent material, Ln@bio-MOF-1, was synthesized using a facile hydrothermal method. The structure and luminescence characteristics of the material were studied in detail. By controlling the molar amounts of Tb3+ and Eu3+, the chromaticity of the samples could be easily modulated. The synthesized material showed potential for use in WLED applications, with high quantum yield, white emission, and desirable color rendering index and correlated color temperature.
DALTON TRANSACTIONS
(2023)
Article
Chemistry, Inorganic & Nuclear
Yan Gao, Huayu Qian, Pengfei Jiang, Rihong Cong, Tao Yang
Summary: A series of Bi3+-doped phosphors were synthesized by a high temperature solid state reaction method, showing that Bi3+ can act as a sensitizer to enhance the emission efficiency of rare earth ions, leading to color-tunable emissions. Energy transfer was confirmed in co-doped phosphors, resulting in color-tunable emissions from blue to red, or from blue to green.
DALTON TRANSACTIONS
(2021)
Article
Chemistry, Inorganic & Nuclear
Vishvanath D. Patil, Jyotsna S. Thakur, Shramesha Mhatre, Medha Gole, Aarti Jaiswal
SYNTHESIS AND REACTIVITY IN INORGANIC METAL-ORGANIC AND NANO-METAL CHEMISTRY
(2013)
Article
Nanoscience & Nanotechnology
J. Thakur, R. Shukla, N. Raje, D. Ghonge, H. Bagla, A. K. Tyagi
NANOSCIENCE AND NANOTECHNOLOGY LETTERS
(2011)
Article
Chemistry, Multidisciplinary
Maheshwari Zirpe, Hemlata Bagla, Jyotsna Thakur
SEPARATION SCIENCE AND TECHNOLOGY
(2020)
Article
Polymer Science
Maheshwari Zirpe, Hemlata Bagla, Jyotsna Thakur
JOURNAL OF INORGANIC AND ORGANOMETALLIC POLYMERS AND MATERIALS
(2020)
Article
Chemistry, Physical
Gayatree Shinde, Jyotsna Thakur
Summary: A magnetically recyclable Ag@Fe2O3 core-shell structured nanocatalyst was synthesized and found to exhibit good catalytic activity and reusability in the synthesis of 2-aryl benzimidazoles and benzothiazoles.
CURRENT ORGANOCATALYSIS
(2022)
Article
Chemistry, Multidisciplinary
Maheshwari Zirpe, Jyotsna Thakur
Summary: The study focused on using delafossite-structured silver ferrite nanoparticles as adsorbents to remove cationic dye Basic Green-4 from aqueous solutions. The results showed that almost all dye was adsorbed within 30 minutes under the conditions of pH 8 and 20 mg nanoparticles.
JOURNAL OF NANOPARTICLE RESEARCH
(2022)
Article
Chemistry, Multidisciplinary
Maheshwari Zirpe, Jyotsna Thakur
Summary: This study introduces a biopolymer-based CMC/Fe3O4 nanocomposite as an effective, recyclable, low-cost, and environmentally friendly adsorbent for removing heavy metals such as Mercury and Cadmium from wastewater. The adsorption capacity of CMC/Fe3O4 was determined to be high for both Hg(II) and Cd(II), and the adsorption process followed the Langmuir isotherm model and Pseudo-second order kinetic model, showing spontaneous and endothermic nature of adsorption.
SEPARATION SCIENCE AND TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Gayatree Shinde, Jyotsna Thakur
Summary: A core-shell structured Fe3O4@MgO catalyst with spherical morphology was synthesized using a two-fold co-precipitation technique. In this study, Fe3O4@MgO was successfully used as an effective, novel, and recoverable nanocatalyst in an easy-to-follow, affordable, environment-friendly, and productive process for the synthesis of polyhydroquinoline derivatives via one-pot four-component Hantzsch condensation reaction. Importantly, magnetically retrievable Fe3O4@MgO nanoparticles showed high catalytic efficiency in solvent-free condition and could be reused up to six cycles without significant loss of catalytic activity. The study provides a greener route to yield 82-94% of polyhydroquinoline in a short reaction time under ultrasonication.
JOURNAL OF CHEMICAL SCIENCES
(2023)
Article
Chemistry, Multidisciplinary
Gayatree Shinde, Jyotsna Thakur
Summary: This study presents a solvent-free synthesis method for 1,8-dioxodecahydroacridine derivatives using Fe3O4@MgO core-shell structured nanocatalyst, achieving high yields in a short reaction time.
RESEARCH ON CHEMICAL INTERMEDIATES
(2023)
Article
Food Science & Technology
Jyotsna Shrikant Thakur
CURRENT RESEARCH IN NUTRITION AND FOOD SCIENCE
(2018)
Article
Materials Science, Ceramics
Zilong Xiong, Wenzhuo Xue, Mujun Li, Feihu Tan, Yupeng Chen, Hongyu Yu
Summary: In this study, CBS glass/Al2O3 composites were developed for LTCC applications based on a CaO-B2O3-SiO2 (CBS) glass system with a high boron content. The study revealed that the softening of glass and interfacial reaction between the glass and Al2O3 were the two most important factors affecting LTCC's densification process. Real-time shrinkage rate of LTCC during sintering was successfully simulated, and it was proven that the formation of the CaAl2(BO3)O phase played a significant role in reducing glass viscosity and promoting dense structure formation. The resulting LTCC composite exhibited excellent performance for high-frequency applications.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Saurabh Kumar Sharma, Vinita Grover, Rakesh Shukla, Abid Hussain, Ambuj Mishra, Pawan Kumar Kulriya
Summary: In this study, the disordering caused by swift heavy ion irradiation in two different compositions of pyrochlore structures was investigated. X-ray diffraction, Raman spectroscopy, and high-resolution transmission electron microscopy were used to analyze the samples before and after irradiation. It was found that both compositions underwent amorphization due to irradiation, with a slower rate observed in Nd1.8Zr2.2O7.1. The irradiation-induced modified track region in Nd1.8Zr2.2O7.1 consisted of defect-rich pyrochlore structure, anion-deficient fluorite structure, and amorphous domains.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Jiabei He, Mengshan Song, Ming Yang, Miaomiao Zhu
Summary: This study investigates the influence of ion irradiation on high-entropy ceramics and finds that irradiation-induced lattice rearrangement can improve the radiation resistance of these ceramics.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Yajie Yu, Shi He, Zhengang Zhang, Haihua Chen, Peipeng Jin, Binnian Zhong, Linhui Zhang, Liping Wang, Cheng Lu
Summary: Silicide ceramics, including tantalum disilicide (TaSi2), are known for their exceptional physical properties but are limited in practical applications due to their inherent brittleness at room temperature. In this study, we successfully improved the mechanical properties of TaSi2 ceramics and increased their electrical conductivity by modifying the preparation methods and sintering conditions. These findings provide valuable insights for future applications of TaSi2 and the design of advanced ceramic materials.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Jian Li, Jia Liu, Yongcui Zhang, Wei Sun, Yang Wang, Haitao Wu, Ling Li, Chuanbing Cheng, Yingying Wang, Ke Tan, Futian Liu
Summary: Microstructure design plays a crucial role in regulating the microwave dielectric properties of materials, however, the understanding of frequency temperature stability and related micromechanism remains limited. In this study, a combination of first-principles calculations and experimental observation was used to investigate the correlation among sintering behavior, crystal structure, bonding nature, and microwave dielectric properties of LnPO(4) (Ln = Eu, Pr) ceramics. The research findings systematically clarify the optimized effect and micromechanism of lanthanides on the dielectric properties of monazite ceramics, providing insights into the design and enhancement of microwave dielectric materials.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Wenqian Pan, Xizhen Xia, Wei Zhou, Yang Li
Summary: The study investigates the frictional and wear behaviors of carbon fiber-reinforced SiC ceramic matrix composites with different fiber orientations mating with ceramic balls. The results show that fiber orientation significantly affects the friction and wear properties of the composites. Pads with randomly arranged fibers demonstrate better friction stability and lower wear volume, potentially suitable for bearing material applications. The research also explores the factors influencing the formation of continuous tribo-film and identifies abrasive wear and oxidation wear as the dominant wear mechanisms for the friction pairs.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Sergey Nikolaevich Perevislov, Ilya Evgenievich Arlashkin, Valentina Leonidovna Stolyarova
Summary: This paper describes the synthesis and sintering of MAX phases in the Zr-Al-C system. Different mixtures of initial Zr/Al/C and Zr/Al/ZrC powders were used to synthesize Zr2AlC and Zr3AlC2 MAX phases. The highest content of Zr3AlC2 MAX phase was obtained using a component ratio of 1:1.5:2-51.1 vol.% of Zr/Al/ZrC powders.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Weijia Luo, Xubin Wang, Baiheng Bai, Jianli Qiao, Xingcong Chen, Yongzheng Wen, Jingbo Sun, Lingxia Li, Ji Zhou
Summary: This study successfully establishes the relationship between internal strain and dielectric loss by synthesizing and designing specific structure of tungsten bronze ceramics, and concludes that controlling internal strain can effectively reduce dielectric loss. This research is of great significance for the development of future all-ceramic non-Hermitian devices.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Santanu Mondal, Juan Diego Shiraishi Lombard, Sreenivasulu Gollapudi, Carolina Tallon, Jie-Fang Li, Dwight Viehland
Summary: Ultrafast high-temperature sintering (UHS) is an effective method for rapidly densifying ZrB2 powders. The final grain size increases with longer sintering duration. X-ray diffraction and energy-dispersive spectroscopy show crystalline phase and compositional uniformity in ZrB2 after UHS.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
JiaNan Wang, ZhiQiang Li, YongZheng Zhu, Yao Liang, Yan Cui, HuaLong Tao, Bo Song, Alexander Nikiforov, ZhiHua Zhang
Summary: First-principles calculations were performed to investigate the crystal structure, electronic structure, and ion diffusion of sulfur-doped Li2FeSiO4. The results showed that sulfur doping can improve the electronic conductivity and reduce the energy barrier for ion diffusion.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Xiaodi Dai, Serdar Aydin, Mert Yuecel Yardimci, Gunter Reekmans, Peter Adriaensens, Geert De Schutter
Summary: This study investigates the rheological behavior, solidification process, and nanostructure changes of sodium hydroxide-activated slag (NH-AAS) and sodium silicate-activated slag (SS-AAS) pastes over time. The results show that NH-AAS and SS-AAS release similar heat and reach a similar reaction degree at their initial setting times, but have different gel structures.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Yanliang Ji, Simon Becker, Zichen Lu, Alexander Mezhov, Regine von Klitzing, Schmidt Wolfram, Dietmar Stephan
Summary: This study reveals the significant influence of resting time on the rheological properties of cement suspensions, which is closely related to non-absorbed polycarboxylate superplasticizers (PCEs) size variation. Adsorbed PCE during resting tends to bridge particles instead of dispersing them, leading to an increased yield stress.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Yifeng Huang, Xin Wang, Yinchang Ma, Xiang Lv, Jiagang Wu
Summary: This study investigates the effect of K/Na ratio on the phase structure, ferroelectric domains, and piezoelectric properties of potassium sodium niobate (KNN)-based ceramics. It reveals that high Na+ content leads to large ferroelectric domains, while high K+ content results in local polarity heterogeneity and distinct dielectric relaxational behavior. The balanced local polarity and stress heterogeneities contribute to improved piezoelectricity.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Zun Xia, Yedong Rong, Hao Li, Ye Dong, Hongbo Yu, Jie Xu, Xiuhui Wang, Jinlong Yang
Summary: This study presents the synthesis of hollow MgAl2O4 particles in situ within porous ceramics, resulting in volume expansion and the formation of a hierarchical pore structure, leading to a significant improvement in compressive strength.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Honglong Wang, Zhiguo Sun, Faming Xia, Chenguang Yang, Xiaoguang Wang, Jintang Li, Linxu Jiang
Summary: In this study, the micro-geometry morphology variation and microstructural transformation mechanism of muscovite crystals under electron beam irradiation were explored. The results revealed the instability of the muscovite lattice under irradiation, as well as the expansion and shrinkage of the lattice with increasing dose. The study also identified changes in chemical structure and other mechanisms involved. These findings are significant for the design of radiation-resistant silicate materials and the manufacturing of electronic components used in the aerospace industry.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2024)
