Article
Materials Science, Ceramics
Thais Karine de Lima Rezende, Helliomar Pereira Barbosa, Karmel de Oliveira Lima, Marcio Sousa Goes, Renata Cristina de Lima, Rogeria Rocha Goncalves, Jefferson Luis Ferrari
Summary: By triply doping Er3+, Yb3+, and Eu3+ elements in the SiO2-Gd2O3 system, optical responses under infrared and ultraviolet excitations can be achieved, leading to an increase in energy conversion efficiency for potential applications in the field of energy conversion and solar cell technologies.
CERAMICS INTERNATIONAL
(2021)
Article
Optics
Ziwei Wan, Wanjun Tang, Qingliang You, Biao Xiao, Guangyong Xie
Summary: Two series of Eu-doped (Sr,Ln)(9)MgK(PO4)(7) solid-solution phosphors were synthesized and their crystal structure and luminescence properties were studied. The luminescence of Eu3+ and Eu2+ ions were observed in Eu-doped Sr9MgK(PO4)(7) phosphor synthesized in a reducing atmosphere. The incorporation of Y3+ and La3+ ions, as representatives of rare earth ions, significantly improved the luminescence performance, indicating the stabilization of Eu2+ ions under reductive atmosphere. The proposed strategy proves to be feasible for other Eu2+/3+-coexisting phosphor systems.
JOURNAL OF LUMINESCENCE
(2022)
Article
Materials Science, Ceramics
F. Carrillo Romo, A. Alcantar Mendoza, A. Garcia Murillo, M. Diaz Cruz
Summary: In this study, ytterbium oxide (Yb2O3) powders with europium (Eu3+) were synthesized using the epoxide-driven sol-gel process. Different molar ratios of Yb2O3-europium xerogels were prepared and heat-treated at 1273 K to obtain dense crystalline material. The powders were characterized using XRD and SEM, and photoluminescent studies were conducted to investigate their structural and luminescent properties. After heat treatment, the powders exhibited spherical particles and distinct reflections indicating a cubic-type crystalline structure, with crystallite sizes ranging from 14 to 30 nm. Luminescence studies revealed emission bands between 550 and 700 nm attributed to the D-5(0) -> F-7(2) transition level of europium ion.
JOURNAL OF THE AUSTRALIAN CERAMIC SOCIETY
(2023)
Review
Chemistry, Physical
Mihail Secu, Corina Secu, Cristina Bartha
Summary: Rare-earth doped oxyfluoride glass ceramics can be tailored for optical applications with high transparency and luminescence properties, while maintaining thermal and chemical advantages of oxide glasses. Sol-gel chemistry offers a flexible synthesis approach with control over purity and homogeneity, along with compositional flexibility. This review focuses on optical properties and processing influences on RE-doped luminescent nanocrystals, discussing perspectives and future development directions.
Article
Materials Science, Ceramics
Angel de Jesus Morales-Ramirez, Margarita Garcia-Hernandez, Maria Luz Carrera-Jota, Paulina Garnica-Chavez, Brenely Gonzalez-Penguelly, Aristeo Garrido-Hernandez
Summary: Lu2Si2O7:Eu3+ thin films were prepared using sol-gel methods and dip coating, and exhibited a monoclinic structure with preferential orientation along a specific direction after heat treatment. The films showed strong emission from Eu3+ ions, with the optical yield and decay time increasing with the SiO2 content.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Multidisciplinary
Singh Sonu Kumar, Rakesh Kumar Singh, P. K. Verma, Md Irfanul Haque Siddiqui, Masood Ashraf Ali, Aniket Manash
Summary: In this study, Cerium-substituted Strontium hexaferrite was prepared using a sol-gel method and analyzed for various properties. The results show that with an increase in Cerium content, there are changes in crystalline size, cell volume, thermal behavior, and spectral characteristics. The addition of Cerium also improves the magnetic and ferroelectric properties of the material.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2021)
Article
Chemistry, Physical
Tianpeng Yan, Qi Han, Zhenhua Li, Yinglin Song, Yuxiao Wang, Xueru Zhang
Summary: The temperature sensitivity of NaGd(MoO4)(2): Er3+/Yb3+ materials was studied, and the effects of activator ion and sensitizer ion doping concentration, as well as calcination temperature, were analyzed. The results show that the doping concentrations of Er3+ and Yb3+ have significant effects on temperature sensitivity within specific concentration ranges, and the calcination temperature of 800 degrees C exhibits the best sensitivity.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Greta Inkrataite, Meldra Kemere, Anatolijs Sarakovskis, Ramunas Skaudzius
Summary: This study investigated the impact of boron doping on YAG, YLuAG, and LuAG materials, showing that the addition of boron can indeed shorten decay time and increase emission intensity. Powder compounds containing 1% and 5% boron exhibited the most intense emission, while pure samples doped with 5% boron showed the shortest decay times.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Ceramics
S. V. Kameneva, Kh. E. Yorov, R. K. Kamilov, S. Yu. Kottsov, M. A. Teplonogova, T. V. Khamova, M. A. Popkov, I. V. Tronev, A. E. Baranchikov, V. K. Ivanov
Summary: Aerogels containing rare earth elements are promising compounds for designing functional materials due to their combination of aerogel properties and the luminescent and catalytic properties of rare earth elements. A modified sol-gel method was developed to produce mixed rare earth oxide aerogels with high metal to metal ratio and individual aerogels. The aerogels obtained possess mesoporous structure and high surface area, and show strong luminescence in the visible region after calcination at high temperature.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2023)
Article
Chemistry, Inorganic & Nuclear
Weiying Zhou, Jiaqi Fan, Jiabao Luo, Lemin Lin, Jiaxin Zhou, Jilin Zhang, Zhenpeng Zhu, Xinguo Zhang
Summary: By manipulating the Eu2+-sensitized composition of Sr9LiMn(PO4)7 through Ln(3+) heterovalent substitution, a bright red emission with enhanced intensity can be achieved. Tb3+ doping significantly increases the emission intensity. Homovalent (Ca2+) substitution allows precise tuning of the emission color.
INORGANIC CHEMISTRY
(2022)
Article
Materials Science, Multidisciplinary
Eduarda Firmino, Luana da Silva Oliveira, Felipe Cabral Borges Martins, Jose Carlos S. Filho, Helliomar Pereira Barbosa, Acacio A. Andrade, Thais Karine de Lima Rezende, Renata C. de Lima, Marco A. Couto dos Santos, Marcio Sousa Goes, Jefferson Luis Ferrari
Summary: This study utilized luminescent materials with red emission characteristics, showing strong photoluminescence both in isolated material and impregnated in digital prints, which are essential for obtaining higher resolution images of latent fingerprints.
Article
Chemistry, Inorganic & Nuclear
Andrea Rosati, Michele Fedel, Stefano Rossi
Summary: A set of NIR reflective nano-pigments with YIn0.9Mn0.1O3-ZnO stoichiometry were synthesized using sol-gel route. Different temperatures of calcination produced three ochre pigments and two blue shades, with the thermal properties and chemical changes monitored through TGA, DSC, FT-IR, XRD, and STEM analysis. The synthesized pigments exhibited NIR reflectance ability and were color-typed according to the CIE-1976L*a*b* method.
JOURNAL OF SOLID STATE CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Junyu Hong, Feilong Liu, Miroslav D. Dramicanin, Lei Zhou, Mingmei Wu
Summary: A series of Yb3+- and Er3+-doped Ca3Sc2Si3O12 (CSS) upconversion (UC) phosphors were synthesized by the sol-gel combustion method to develop novel luminescent materials for optical temperature measurement. The addition of Yb3+ greatly enhanced the emission of Er3+ by effective energy transfer. The prepared CSS:Yb3+,Er3+ phosphors exhibited green and red emissions corresponding to specific transitions of Er3+, and showed excellent temperature-dependent behavior with high sensitivity.
Article
Chemistry, Physical
Guojing Wang, Guang Jia, Jianru Wang, Hanxiao Kong, Yaxian Lu, Cuimiao Zhang
Summary: Novel rare earth activator ion-doped perovskite-type La4Ti3O12 phosphors were synthesized via the Pechini sol-gel method, and the crystal structure and luminescence properties can be controlled by varying calcination conditions. Optimal doping concentrations and calcination conditions can enhance the luminescence performance of the phosphors, showing potential for LED and optoelectronic applications. Additionally, up-conversion luminescence properties of doped samples under NIR excitation were also investigated, demonstrating excellent up-conversion performances for potential applications in rare earth luminescent materials.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Applied
Mengge Zhao, Weijian Cai, Jiwu Li
Summary: CeXCoyCu oxide composite catalysts were prepared using polyethylene glycol, citrate sol-gel method, and PMMA template for the oxidation of o-xylene. The catalysts were characterized, and their catalytic activity was investigated. The results indicate that the Ce2Co1Cu1 catalyst exhibits the best catalytic activity at low temperature.
JOURNAL OF RARE EARTHS
(2022)
Article
Chemistry, Multidisciplinary
Dicheng Xie, Wenchao Ma, Chao Wang, Weiping Zhang, Zhiying Ding
Summary: The viscosity of cell microenvironment affects cell physiological processes. A fluorescent probe X-V was designed to detect viscosity changes in a hepatic ischemia-reperfusion injury (HIRI) cell model with high selectivity and sensitivity. The probe has a fluorescence emission wavelength of 615 nm and a Stokes shift of up to 125 nm, making it useful for studying intracellular viscosity changes and cell viscosity changes in the HIRI cell model. Probe X-V provides a valuable tool for studying the relationship between mitochondrial viscosity and related diseases.
CHEMICAL COMMUNICATIONS
(2023)
Article
Chemistry, Physical
Liang Li, Qianwen Cao, Jing Xie, Wenming Wang, Jiajia Wang, Yan Pan, Xiantao Wei, Yong Li
Summary: Researchers successfully prepared a far-red emitting phosphor doped with Mn4+ ions, which can be efficiently excited and emit intense far-red light. The crystalline properties and luminescence performance were studied in detail, and the crystalline field effect and concentration quenching mechanism of Mn4+ ions in the matrix were explored. The phosphor exhibited high internal quantum efficiency, color purity, and activation energy, making it suitable for the preparation of LED devices for plant cultivation.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Multidisciplinary
Wenming Wang, Liang Li, Hongmei Chen, Xiantao Wei, Juanying Jia, Yan Pan, Yong Li
Summary: In this study, Yb3+/Er3+ co-doped YOF glass ceramics were prepared and their luminescence and temperature sensing properties were investigated under 980 nm excitation. The fluorescence intensity ratio (FIR) of the thermal couple energy level (TCEL) and non-thermal couple energy level (NTCEL) was used to evaluate the temperature sensing sensitivity. The increase in pump power resulted in a decrease in relative sensitivity (SR) due to the thermal effect and increased rate of energy transfer and non-radiative relaxation process between dopants and host. The maximum relative sensitivity of this sample reached 1.59 x 10-2 K-1 at 310 K with a pump power of 0.2 W, indicating the prospective application of this glass ceramic in optical thermometry.
Article
Energy & Fuels
Mu-Han Zhou, Jia-Ying Lin, Wei-Ping Zhang, Jing-Xin Jian, Fentahun Wondu Dagnaw, Tieyu Wang, Qing-Xiao Tong
Summary: Three copper complexes were studied as oxygen evolution catalysts, and two of them exhibited high water oxidation activity. In a photovoltaic electrolysis system, the copper complexes achieved efficient solar water splitting for hydrogen production. This work is significant for simulating the catalytic water oxidation process of natural enzymes and developing artificial photosynthesis systems.
Article
Chemistry, Physical
Peipei Xiao, Yong Wang, Yao Lu, Trees De Baerdemaeker, Andrei-Nicolae Parvulescu, Ulrich Mueller, Dirk De Vos, Xiangju Meng, Feng-Shou Xiao, Weiping Zhang, Bernd Marler, Ute Kolb, Hermann Gies, Toshiyuki Yokoi
Summary: This study investigated the effects of the organic structure-directing agent (OSDA) with or without Na cations on the synthesis of AEI zeolite and its impact on the composition and properties of Cu/AEI zeolite catalysts for the direct conversion of methane to methanol (cDMTM). The presence of Na cations in the synthesis of AEI zeolite resulted in higher Al content and increased percentage of Al pairs. Cu/AEI zeolite catalysts synthesized with Na cations exhibited lower activation energy, higher methanol formation rate, and less stable performance in the cDMTM reaction. The Al distribution in the framework affected the relationship between Cu species and acid sites, leading to differences in methanol selectivity and reaction performance.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Article
Chemistry, Multidisciplinary
Ning Wei, Lizhuo Wang, Wenjie Yang, Dazhi Zhang, Zhenghao Jia, Wei Liu, Weiping Zhang, Jiazhong Zang, Shengjun Huang, Jun Huang
Summary: The usage of hierarchical MFI zeolite enhances the catalytic performance of Mo-based catalysts for the olefin-metathesis reaction. The active catalysts are obtained through a segmental evolution track between hierarchical zeolite and Al2O3 slices for the formation of active sites. The working evolution track requires the engagement of intracrystalline mesoporous surface, Al2O3 slices, and zeolitic Bronsted acid sites.
CHEMISTRY-A EUROPEAN JOURNAL
(2023)
Article
Biochemistry & Molecular Biology
Zhiquan Liu, Yinan Zhang, Yueyue Zheng, Yixuan Feng, Weiping Zhang, Si Gong, Huikang Lin, Panpan Gao, Hangjun Zhang
Summary: In this study, 35 GST genes were identified in Daphnia pulex, belonging to eight subfamilies. Chromosome tandem duplication of genes within the same subfamily was observed, which may be the main force driving GST expansion in D. pulex. D.pulex GSTs showed different expression patterns in response to nanoplastic exposure, likely due to their unique motifs.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Materials Science, Ceramics
Qianwen Cao, Liang Li, Jing Xie, Yuan Feng, Wenming Wang, Yan Pan, Xiantao Wei, Yong Li
Summary: Phosphors doped with Mn4+ ions are used as red phosphors for indoor plant cultivation LEDs and w-LEDs due to their strong emission in the red and far-red light regions. La2Mg(Mg1/3Ta2/3)O-6: Mn4+ (Mg2La3TaO9: Mn4+) red phosphors were prepared using a conventional high-temperature solid-phase method. The synthesized phosphors have a high color purity of 99.07% and an internal quantum efficiency of 59.87%. Cation substitution was adopted to enhance the performance of the phosphors, resulting in improved luminescence intensity and thermal stability. The synthesized phosphors were used to prepare red LEDs and w-LEDs devices, which exhibited stable light emission at different currents.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2023)
Article
Nuclear Science & Technology
Weiping Zhang, Hui Liu, Yong Zhou, Kaixing Liao, Ying Huang
Summary: This paper employs molecular dynamics simulations to study the volume change and elastic property variation of aggregate-forming minerals in concrete. The results show that the densities of minerals with similar atomic structure and chemical composition vary in a similar trend with deposited energy due to the similar amorphization mechanism. After saturated irradiation, the elastic tensors of all silicate minerals are almost isotropic, while those of irradiated carbonate minerals remain anisotropic. Moreover, the elastic modulus ratio versus density ratio of irradiated minerals roughly follows the density-modulus scaling relationship. These findings can provide a basis for predicting the volume and elastic properties of irradiated concrete aggregates in nuclear facilities.
NUCLEAR ENGINEERING AND TECHNOLOGY
(2023)
Article
Physics, Multidisciplinary
Wenfeng Huang, Xinyun Liang, Baiqiang Zhu, Yuhan Yan, Chun-Hua Yuan, Weiping Zhang, L. Q. Chen
Summary: Interferometers play a crucial role in precision measurements and can be enhanced using quantum states to break the standard quantum limit (SQL). However, quantum states are easily degraded by losses. In this study, we designed a quantum interferometer with a variable beam splitter to protect the quantum resource from environmental impacts and achieved optimal phase sensitivity close to the quantum Cramer-Rao bound. This strategy can greatly reduce the quantum source requirements in quantum measurements and retain quantum advantages in lossy environments.
PHYSICAL REVIEW LETTERS
(2023)
Article
Agriculture, Multidisciplinary
Guizong Zhang, Hao Yang, Weiping Zhang, T. Martijn Bezemer, Wenju Liang, Qi Li, Long Li
Summary: A field experiment was conducted to investigate the effects of intercropping systems on soil biota. It was found that intercropped maize soils had increased complexity and robustness of soil networks, while densities of plant parasitic nematodes and β-glucosidase activity were reduced. Intercropped soybean soils had lower C availability, but showed an increase in saprophytic fungi and plant parasitic nematodes compared to monoculture soils.
AGRICULTURE ECOSYSTEMS & ENVIRONMENT
(2023)
Article
Agronomy
Ye Su, Rui-Peng Yu, Hua-Sen Xu, Jian-Hao Sun, Jian-Hua Zhao, Wei-Ping Zhang, Hao Yang, Surigaoge Surigaoge, Ragan M. Callaway, Long Li
Summary: Crop cultivar mixtures can increase and stabilize productivity, but their effects on year-to-year temporal stability vary. This inconsistency is due to unclear mechanisms underlying the effects of diversity on stability, and the role of abiotic environment on crop mixtures is not well understood.
FIELD CROPS RESEARCH
(2023)
Article
Plant Sciences
Rui-Peng Yu, Ye Su, Hans Lambers, Jasper van Ruijven, Ran An, Hao Yang, Xiao-Tong Yin, Yi Xing, Wei-Ping Zhang, Long Li
Summary: Resource complementarity enhances ecosystem functioning in diverse plant communities, and the role of facilitation in this process is poorly understood. This study used leaf manganese concentration as a proxy for rhizosheath carboxylate concentration and found that phosphorus facilitation mediated by the plasticity of root traits enhances the relative complementarity effect in low-phosphorus environments. The results support the vital mechanism of interspecific phosphorus facilitation via belowground processes and provide evidence for the pivotal role of phosphorus facilitation in biodiversity research.
Article
Materials Science, Multidisciplinary
Jing Xie, Qianwen Cao, Liang Li, Wenming Wang, Yan Pan, Xiantao Wei, Yong Li
Summary: A series of double-perovskite Mn4+- doped Sr2ScNbO6 (abbreviated as SSNO: Mn4+) phosphors were prepared and analyzed for their crystal structure, morphology, and photoluminescence in order to find suitable far-red-emitting phosphors for plant lighting. The SSNO: Mn4+ phosphor emits far-red light at a peak wavelength of 702 nm. It exhibits two unique efficient broad excitation bands at wavelengths of 313 nm and 357 nm in the near-ultraviolet (UV) regions. The findings suggest that SSNO: Mn4+ phosphors have potential applications in indoor plant cultivation.
Article
Optics
Wenming Wang, Liang Lib, Jing Xie, Qianwen Cao, Yong Li, Xingmei Shen, Yan Pan
Summary: This study successfully prepared high-efficiency and thermally stable red-emitting phosphors, which are of great importance for WLEDs applications. The samples exhibited intense red emission and high color purity, making them suitable for WLEDs as well as temperature sensing in lighting and optical thermometry.
JOURNAL OF LUMINESCENCE
(2024)
