CERAMICS INTERNATIONAL
·
2026
·
IF 6
Tao Du,Jiyao Cui,Jinghao Li,Hairui Bai
Tb 3+ ions were pre-introduced into ZnO to synthesize ZTb phosphors, which were subsequently compounded with MnO 2 -Co 2 O 3 -Sb 2 O 3 -SiO 2 - x Bi 2 O 3 (MCSS- x B) to prepare dual-functional varistor ceramics. The effects of Bi 2 O 3 content on the microstructural, nonlinear electrical, and photoluminescence properties of the ZTb-MCSS- x B varistor ceramics were systematically investigated. Results show that the presynthesized ZTb phosphors exhibit efficient host-sensitized nonradiative energy transfer from the ZnO matrix to Tb 3+ ions. Driven by lattice distortion and charge compensation, hybrid defect clusters form, producing, a broadband emission centered at 540 nm. Upon sintering with MCSS- x B, the microstructure and double Schottky barrier characteristics of the varistor ceramics are significantly modulated. At an optimal Bi 2 O 3 content of 0.9 mol%, the ceramic exhibits a dense microstructure with an average grain size of 3.26 μm, a maximum barrier height of 1.58 eV, a high nonlinear coefficient of 70.2, and a low leakage current density of 8.95 μA/cm 2 . Importantly, the continuous Bi-rich liquid phase relieves lattice strain and decouples Tb-defect clusters, resulting in energy reconfiguration from the broadband luminescence of the ZTb phosphor to transition-metal-activated sharp emissions, characterized by an intense red emission at 750 nm and a near-infrared emission at 828 nm originating from Mn 4+ ions and Mn 4+ - V O defect complexes, respectively. These findings demonstrate a feasible strategy for simultaneously achieving superior nonlinear electrical performance and multicenter photoluminescence in ZnO-Bi 2 O 3 -based varistors.
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高影响因子
MICROCHEMICAL JOURNAL
·
2026
·
IF 5.2
Hui Cao,Run Gao,Lin Chen,Zixia Huang,Xiuxiu Wu,Jinsong Yu,Fei Xu
Hg(II) is a widespread environmental contaminant with high toxicity and severe adverse effects on human health. Although aptamers are commonly used as recognition elements for Hg(II), their binding performance is highly susceptible to pH. In this study, we designed a dual-functional Hg(II)-specific aptamer and developed a biosensor based on Tb(III)-DNA self-assembled coordination polymers (Tb-DNA CPs) for the rapid detection of Hg(II). In the designed aptamer, the G-rich region functions as a luminescent antenna ligand to sensitize Tb(III) emission, while the T-rich region serves as the Hg(II) recognition unit. The resulting Tb-DNA CPs retained 90.2% of their original fluorescence intensity after 30 days in aqueous solution and demonstrated high stability over a broad pH range (pH 4–11). This improved stability is attributed to the role of Tb(III) as a structural crosslinker that promotes the assembly of coordination polymers. The sensor exhibited a limit of detection (LOD) of 3.89 nM for Hg(II), with a linear response range of 5 to 250 μg·L −1 . In vegetable samples, Hg(II) was rapidly quantified with recoveries of 96.49% to 113.40% and RSDs of 1.98%–4.83%. Mechanistic analysis indicated that the sensing response of the Tb-DNA CPs was mainly driven by photoinduced electron transfer (PET) and Hg(II)-induced conformational changes. This work overcomes the pH-dependent limitation of conventional aptamer-based sensors and provides a practical platform for on-site Hg(II) monitoring. The Tb-DNA CP strategy also offers a versatile foundation for the development of stable lanthanide-based biosensors.
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高影响因子
RSC Advances
·
2023
·Vol. 13
·期 37
·25681-25690
·
IF 3.9
Jie Liang,Ting Fan,Jian-tao Lü,Tianjie Guan,Ting-ting Deng,Bangyun Xiong
NaGdF4:Ce,Eu,Tb nanocrystals were successfully prepared by a one-step hydrothermal method with Ce3+ ions as sensitizers, Eu3+ and Tb3+ ions as activators, and polyethylenimine (PEI) as surfactants. Color-adjustable fluorescence emission was achieved by the energy transfer effect between rare earth ions. Blue fluorescent carbon quantum dots (CDs) with a double UV response under 254 nm and 365 nm excitation were synthesized by a one-step hydrothermal method. A hydrophilic NaGdF4:Ce,Eu,Tb/CD composite ink was prepared by an easy physical mixing method. Because of the electrostatic self-assembly effect, the color adjustable luminescence was achieved in a few seconds, and the white light emission with color coordinates of (0.32, 0.32) was obtained. A dual-mode luminescence anti-counterfeiting pattern was designed and achieved by excitation with ultraviolet light at 254 nm and 365 nm.
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产品关联
DOI
PubMed
高影响因子
APPLIED CATALYSIS A-GENERAL
·
2020
·
IF 5.006
Hui Huang,Jun Wang,Yafei Xu,Rui Xu,Wuke Li
In this paper, a luminescent and thermo-responsive catalyst based on SiO 2 @Pt@PABI-Tb@PNIPAM was prepared by incorporating Pt nanoparticles , luminescent material and mesoporous silica with thermo-responsive polymer. The obtained catalyst was characterized by IR, TGA, UV–vis, SEM, TEM, X-ray photoelectron spectroscopy and luminescence. The hybrid catalyst exhibits “on-off” green luminescence in solution under UV irradiation, which could be observed by eyes. The catalytic results indicate that the dehydrogenation of ammonia borane (AB) catalyzed by SiO 2 @Pt@PABI-Tb@PNIPAM is thermo-controllable and switchable. The SiO 2 @Pt@PABI-Tb@PNIPAM shows high catalytic activity for the generation of hydrogen at room temperature. However, it exhibits much lower catalytic activity at high temperature. The catalysts exhibit excellent durability because the support and polymer could prevent the aggregation and leaching of Pt nanoparticles during catalysis. The catalytic research offers a new approach to the thermo-controllable application in the generation of hydrogen from AB.
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高影响因子
ANALYST
·
2017
·Vol. 142
·期 22
·4240-4246
·
IF 3.885
Huihui Li,Jin Shen,Rongwei Cui,Chongmei Sun,Yanyan Zhao,Xia Wu,Na Li,Bo Tang
Highly selective determination of dopamine (DA) over other catecholamines is an urgent need for the precise diagnosis and therapy of DA related diseases. Herein, a new formate-bridged Tb(III)-complex and silver nanoparticles (AgNPs) enhanced fluorescent nanosensor was constructed. HCOO− acted as a co-ligand of Tb(III) and also as a linker between the Tb(III) complex and AgNPs and more readily combined with the primary amine of DA than with epinephrine (EP). The formate-bridged action strengthened AgNPs-based surface enhanced fluorescence of the Tb3+-DA complex and improved the selectivity towards DA. Under neutral buffer conditions, the detection limit for the assay of DA was down to 0.15 nM (S/N = 3) with a linear range from 0.5 nM to 100 nM (R2 = 0.9978). Furthermore, the nanosensor could successfully distinguish DA from EP.
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DOI
PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Yong Xu,Ping Wang,Xiaojun Zhan,Weili Dai,Qing Li,Jianping Zou,Xubiao Luo
Nowadays, it is becoming increasingly urgent to lower the escalating carbon dioxide (CO 2 ) to reduce greenhouse effect. Fortunately, it is an ideal strategy by using the inexhaustible solar energy as the driving force to manipulate the cycloaddition reaction, the atomic efficiency of which is 100 %. This work represents the first attempt on utilization of rare-earth metal Tb with atomic dispersion, and the structure of Tb coordinated with 4 N -atoms and 2B-atoms was constructed on interconnected carbon hollow spheres. The introduction of electron-deficient B reduces the electron density of Tb, thereby boosting Lewis acidity and promoting the occurrence of ring-opening reaction. The mechanism exploration enunciates that TbN 4 B 2 /C is a photothermal synergistic catalyst, the combined action of photogenerated electrons and strong Lewis acidic site of Tb reduces the free energy of the rate-determining step, and then improving the yield of cyclic carbonate up to 739 mmol g -1 h −1 .
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DOI
PubMed
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2017
·
IF 3.133
Jie Chen,Yanhua Song,Ye Sheng,Meiqi Chang,Xiaoming Xie,Murad M.A. Abualrejal,Hongxia Guan,Zhan Shi,Haifeng Zou
Novel luminescent one-dimensional Ln 3+ (Eu, Tb) doped SiO 2 hollow nanofibers were successfully fabricated using a facile and economical co-axial electrospinning technique with subsequent calcination . The scanning electron microscopy (SEM) and transmission electron microscopy (TEM) revealed that the as-obtained samples present obvious hollow morphology with an average diameter of 303 ± 11 nm and thin walls approximate 76 nm. For SiO 2 :xEu 3+ hollow nanofibers, the highest luminescence intensity, the longest lifetime and the largest quantum efficiency were both in the composition of 6 mol% Eu 3+ . The large value of R 21 indicated a highly disordered environment around Eu 3+ ions in the host, which was better for intense visible red emission. Meanwhile, the spectral characteristics and radiative properties were also analyzed according to the Judd-Ofelt theory from the emission spectra. What's more, under ultraviolet excitation, the emission colors of samples could be tuned from red to green, including bisque by doping Eu 3+ , Tb 3+ and co-doping Eu 3+ /Tb 3+ ions, which indicated the obtained SiO 2 :Ln 3+ hollow nanofibers are potential phosphors in nanostructured optical devices applications.
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高影响因子
Journal of Materials Chemistry C
·
2024
·
IF 5.7
Jiaxuan Pan,Jiazhen Lu,Yichen Shang,Ying Li,Bing Yan
Dopamine and arginine are both important substances in the body and are closely related to human health. Timely detection of their concentration abnormalities is of great significance to the prevention of disease. In this work, a Tb3+-functionalized Eu-MOF hybridized double network hydrogel film (Tb@Eu-MOF@PVA/SA) was prepared by a simple synthesis, which can accurately detect arginine (Arg) and dopamine hydrochloride (DH). Meanwhile, the hydrogel acquired good mechanical properties through crosslinking of Tb3+and freeze–thaw cycles. The free carboxyl groups on the surface of the Eu-MOF in this hydrogel film can bind to Tb3+ and sensitize it to emit light through the “antenna effect”, thus forming a fluorescent hydrogel film with dual emission centers. By testing two kinds of detectors and controlling different excitation wavelengths, we can realize the encryption and decryption of information and build an anti-counterfeiting platform to improve the level of information security. The present work not only provides a case study for the preparation of dual-emission Tb3+-functionalized Eu-MOF hybridized dual-network hydrogel films, but also provides ideas for the development of multifunctional luminescent materials.
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高影响因子
Journal of Materials Chemistry C
·
2024
·
IF 5.7
Yao Li,Qingxing Yang,Huwei Li,Xinyu Fu,Hongxia Yue,Zheyu Li,Jing Feng,Hongjie Zhang
Metal halide double perovskites are a promising alternative to lead-based perovskites. Especially, rare earth (RE)-based halide double perovskites have attracted much attention due to their unique optical properties. As RE3+ ions could be served not only as the component of the matrix but also as the luminescence centers, the chemical composition of RE-based halide double perovskites can be simplified and tunable luminescence could be achieved. In this work, Cs2NaRECl6 (RE = Tb, Eu) halide double perovskite nanocrystals were synthesized by the hot injection method. Cs2NaRECl6 nanocrystals exhibit not only the intrinsic host emission but also the characteristic emissions of RE3+ ions. Furthermore, the excitation-wavelength-dependent multicolor emissions of Cs2NaRECl6 nanocrystals make them highly potential for anticounterfeiting applications. Multicolor LED devices based on various components of Cs2NaRECl6 could be obtained, providing promising candidates for optoelectronic applications.
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高影响因子
JOURNAL OF MOLECULAR STRUCTURE
·
2025
·
IF 4.7
Qiang Zhao,Han Peng,He-zhen Wang,Shu-ran Gao,Jun-zhao Wang,Lin-Xi Qin,Meng-ting Fan
In order to better study the properties of rare earth complexes in terms of fluorescence, magnetism, and fluorescent probes, in this work, 5-(2-carboxyphenoxy)isophthalic acid (H 3 ocpia) and rare metal ions Eu 3+ , Tb 3+ , Dy 3+ were used to synthetic metal complexes by solvothermal reaction. Then three complexes Eu(ocpia) (1) , Tb(ocpia) (2) and Dy(ocpia) (3) were synthesized, their structural formulas are as follows: EuC 15 H 7 O 7, TbC 15 H 7 O 7 and DyC 15 H 7 O 7 . Data on the structure acquired via an X - ray single - crystal diffractometer indicates that complexes 1, 2 , and 3 possess the same spatial structures. They are two-dimensional planar structures with undulating ripples. Moreover, solid - state fluorescence tests were carried out on complexes H 3 ocpia, 1 , and 2 , and magnetic property tests were done on complexes 2 and 3 . Fluorescence recognition studies were conducted on complexes 1 and 2 in dispersed systems. The solid-state fluorescence results show that complexes 1 and 2 have excellent fluorescence properties, with higher fluorescence intensity than the ligand. The CIE chromaticity coordinates of complexes 1 and 2 are (0.59, 0.34) and (0.33, 0.62), respectively, and exhibit bright characteristic lights of europium and terbium under fluorescent lamps. Magnetic susceptibility measurements reveal that compounds 2 and 3 exhibit antiferromagnetic coupling behavior between adjacent metal centers. Fluorescence recognition studies have shown that complexes 1 and 2 exhibit good recognition of acetone in dispersed systems, the detection thresholds were determined to be 0.063 vol.% for complex 1 and 0.136 vol.% for complex 2 .
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高影响因子
Crystals
·
2022
·Vol. 12
·期 7
·963
·
IF 2.67
Weili Wang,Shihai Miao,Dongxun Chen,Yanjie Liang
Trivalent lanthanides (Ln3+) doped bismuth-based inorganic compounds have attracted considerable interest as promising candidates for next-generation inorganic luminescent materials. Here, a series of K0.3Bi0.7F2.4(KBF) nanocrystalline particles with controlled morphology have been synthesized through a low-temperature aqueous-phase precipitation method. Using KBF as the host matrix, Eu3+, Tb3+, Pr3+, Nd3+, Sm3+,and Dy3+ions are introduced to obtain K0.3Bi0.7F2.4:Ln3+(KBF:Ln) nanophosphors. The as-prepared KBF:Ln nanophosphors exhibit commendable photoluminescence properties, in which multicolor emissions in a single host lattice can be obtained by doping different Ln3+ions when excited by ultraviolet light. Moreover, the morphology and photoluminescence performance of these nanophosphors remain unchanged under different soaking times in water, showing good stability in a humid environment. The proposed simple and rapid synthesis route, low-cost and nontoxic bismuth-based host matrix, and tunable luminescent colors will lead the way to access these KBF:Ln nanophosphors for appealing applications such as white LEDs and optical thermometry.
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高影响因子
OPTICAL MATERIALS
·
2016
·
IF 2.183
Chen Yuan,Hongde Xie,Haijun Cai,Cuili Chen,Peiqing Cai,Hyo Jin Seo
A green-emitting Tb(III) complex based on siloxane-modified pressure sensitive adhesives (SPSA-Tb(III)) was successfully synthesized by emulsion polymerization . Siloxane-modified pressure sensitive adhesives (SPSA) were used as host materials. The structural coordination, photoluminescence excitation (PLE) and luminescence (PL) spectra, and thermal characterization of this luminescent polymer were investigated. The result from the FT-IR spectra reveals that SPSA have successfully coordinated with the Tb(III) ions. The luminescent analysis indicates that SPSA-Tb(III) displays Tb(III) typical emission peaks at 489, 545, 583, and 622 nm under the excitation of 369 nm. When monitored at 545 nm, strong and sharp excitation bands appear from 300 to 500 nm. And SPSA-Tb(III) has short lifetime (0.25 ms). Meanwhile, SPSA-Tb(III) exhibits high thermal stability (T d = 402 °C) owing to the high bond dissociation energy of Si O bonds. All the results suggest that it is expected to be used as a superior green-emitting material under high temperature.
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高影响因子
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