JOURNAL OF SOLID STATE CHEMISTRY
·
2023
·
IF 3.3
Yun Xie,Da-Li Chen,Yu-Long Wei,Nan Zhang,Wen-Dong Yao,Sheng-Ping Guo
Exploration of new compounds belonging to unusual families is always attractive for the everlasting development of material science. Here, three isomorphic rare-earth sulfide borates RE 3 S 3 BO 3 (RE = Nd, Tb, Dy) have been obtained via a facile metal oxide-boron-sulfur solid-state routine. Their centrosymmetric triclinic structures feature 3 D framework built by three types of REO x S y units, viz. REOS 6 , REO 4 S 3 , and REO 3 S 6 . Their structural relationship with similar phases and lanthanide contraction rule are discussed. Their optical band gaps are measured to be 2.59–2.70 eV, and the corresponding theoretical calculations are also performed. This work enriches the rarely studied chalcogenide borate system and is conducive to discovering more inorganic materials .
✓ 已验证
产品关联
DOI
高影响因子
APPLIED ORGANOMETALLIC CHEMISTRY
·
2023
·Vol. 37
·期 9
·e7211
·
IF 3.9
Qian Xu,Xinyuan Guo,Chuantao Hou,Zonghua Wang
Synthesis of Ln-porphyrin aerogels with abundant porosity and novel photophysical properties for luminescent sensing and photocatalysis should have significant importance. In this paper, a multifunctional Tb-porphyrin aerogel was synthesized using agarose as a building block for ratiometric fluorescent Cu(II) sensing and photocatalytic degradation of rhodamine B. Specially, Tb-porphyrin particles were introduced into agarose aerogel to give the Tb-porphyrin aerogel with porous structure. Tb-porphyrin aerogel shows an excellent sensing performance toward Cu(II) resulting from the self-referencing mechanism and the porous structure. The fluorescent response exhibits a linear range from 1 to 200 μM ( R 2 = 0.990), and the limit of detection is 50 nM (S/N = 3). Such a ratiometric fluorescent sensor shows excellent long-term stability and selectivity. Furthermore, the Tb-porphyrin aerogel was used for photocatalytic degradation of rhodamine B, exhibiting a more efficient activity compared with the Tb-porphyrin particle. This research should open up a new avenue to develop Ln-porphyrin aerogel-based material for ratiometric fluorescent sensing and photocatalysis.
✓ 已验证
产品关联
DOI
高影响因子
Analytical Methods
·
2023
·Vol. 15
·期 16
·1953-1958
·
IF 3.1
Piaotong Liu,Rusi Hao,Wenliang Sun,Junhui Li
As an important trace element in the human body, the concentration of Cu2+ has an important impact on the environment and human health, and its quantitative determination is of great significance in the fields of environmental protection and food safety. Here, a ratiometric fluorescent probe based on Tb(III)-functionalized UiO-66-type MOFs has been synthesized via a facile post-synthetic modification method by employing mixed linkers containing terephthalic acid and 2,6-pyridinedicarboxylic acid for Cu2+ detection. The blue fluorescence intensity at 440 nm from the ligands of MOFs does not change much with increasing Cu2+ concentrations and can be used as a reference signal, while the green fluorescence of Tb3+ can be rapidly and selectively quenched, causing fluorescence intensity at 547 nm to decrease. The probe can be used as a ratiometric sensor for Cu2+ detection with a good linear response and low detection limit. The use of the probe for the determination of Cu2+ in real water samples and drinks shows good practicality. This method for Cu2+ detection is simple, specific and visualized to meet the needs of environmental monitoring and food analysis and provides a new strategy for the construction of new copper ion fluorescent sensors to analyze complex samples.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
MACROMOLECULAR CHEMISTRY AND PHYSICS
·
2018
·Vol. 219
·期 24
·1800403
·
IF 2.492
Chunyan Zhang,Jianxin Luo,Wenjun Li,Lijuan Ou,Guipeng Yu,Chunyue Pan
An environment-friendly synthesis of a covalently bonded terbium(Tb)-complex-containing monodispersed fluorescent porous copolymer microspheres, and their highly selective detection of Fe 3+ are described. The as-made copolymer microspheres exhibit intense green fluorescence originating from Tb ions and high photostability in water. Encouragingly, the fluorescence of the copolymer microspheres can be selectively quenched by trace Fe 3+ due to the interaction between Fe 3+ and the ligands, which disturbs the coordination structure of Tb-complexes and inhibits the energy transfer from ligands to Tb ions. The intense fluorescence intensity, high fluorescence stability, together with the nanoscale and porous nature of the copolymer microsphere endows them with wide detection range (0–1500 µ m ) and low detection limit (2.1 µ m ) for selective recognition of Fe 3+ in aqueous environment. This study paves a new pathway for the function of porous copolymer microspheres being used as targeting for biological detection and environmental issues.
✓ 已验证
产品关联
DOI
高影响因子
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
·
2019
·
IF 4.527
Zeyu Wang,Cong Chen,Huan Liu,Dzmitry Hrynshpan,Tatsiana Savitskaya,Jianmeng Chen,Jun Chen
Multi-walled carbon nanotubes (MWCNTs) promote biodegradation in water treatment , but the effect of MWCNT on denitrification under aerobic conditions is still unclear. This investigation focused on the denitrification performance of MWCNT and its toxic effects on Alcaligenes sp. TB which showed that 30 mg/L MWCNTs increased NO 3 - removal efficiency from 84% to 100% and decreased the NO 2 - and N 2 O accumulation rates by 36% and 17.5%, respectively. Nitrite reductase and nitrous oxide reductase activities were further increased by 19.5% and 7.5%, respectively. The mechanism demonstrated that electron generation (NADH yield) and electron transportation system activity increased by 14.5% and 104%, respectively. Cell membrane analysis found that MWCNT caused an increase in polyunsaturated fatty acids, which had positive effects on electron transportation and membrane fluidity at a low concentration of 96 mg/kg but caused membrane lipid peroxidation and impaired membrane integrity at a high concentration of 115 mg/L. These findings confirmed that MWCNT affects the activity of Alcaligenes sp. TB and consequently enhances denitrification performance.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CARBOHYDRATE POLYMERS
·
2018
·
IF 5.158
Jun Ye,Mingming Zhang,Jian Xiong
A novel, rapid, high selective and sensitive probe, carboxymethyl cellulose (CMC)/Tb(III) with green fluorescence, for detecting Mn 2+ in aqueous solution during pH = 4–10 was proposed in this work. The probe’s synthesis had benefits of mild reaction condition, organic solvent-free and facile operation. A linear relationship between the fluorescence intensity of CMC/Tb(III) probe at 544 nm with 0.046 μM detection limitation and the concentration of Mn 2+ in the range of 0.1–100 μM was obtained. The probe was also used to detected Mn 2+ in tap water and the recoveries were between 97.10% and 101.61%, and the relative standard deviations (RSD, n = 5) of all samples were less than 2.04%. The results by UV absorption spectrum and fluorescence quenching suggested that there might be a dynamic quenching occurred to the fluorescence of CMC/Tb(III) probe when Mn 2+ was involved.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INORGANIC CHEMISTRY
·
2024
·
IF 4.3
Jinjian Wei,Mengxin Liu,Xinan Shi,Daocheng Pan
NaYF4:Ce3+,Tb3+ down-conversion nanoparticles with a photoluminescence quantum yield (PLQY) of 54.8% are synthesized by using a ligand-assisted coprecipitation method in this study. The reaction is completed within 1 min at room temperature, and short-chain hexanoic acid and hexylamine serve as the binary ligands, which enable us to synthesize highly luminescent NaYF4:Ce3+,Tb3+ nanoparticles at room temperature. X-ray diffraction (XRD) and transmission electron microscopy (TEM) are used to characterize the as-prepared nanocrystals. The results reveal that the NaYF4:Ce3+,Tb3+ nanocrystals exhibit excellent dispersion and have a particle size of 2.7 nm. Our NaYF4:Ce3+,Tb3+ nanocrystals possess the advantages of room-temperature preparation, high PLQY, and ultrasmall particle size. These results reveal that the NaYF4:Ce3+,Tb3+ nanocrystals might have a high potential in the applications of lighting, display devices, and bioimaging.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Tao Wang,Jian Zou,Jun Yang
The optical properties of colored cool pigments including their color and solar reflectance are predominantly governed by chemical defects.In this study, a series of yellow cool pigments SrCe 1-x Tb x O 3 (x = 0–0.3) and SrCe 0.7-x Tb 0.3 Y x O 3 (x = 0–0.1) were synthesized via the solid-state reaction based on defect engineering. The effects of chemical defects on their optical performance were systematically investigated. Tb doping extends the absorption edge of the pigments to the visible region beyond 500 nm, thereby imparting a distinct yellow hue to the pigment. However this doping process simultaneously introduces oxygen vacancy defects and facilitates the coexistence of mixed-valence cations (Ce 4+ /Ce 3+ and Tb 4+ /Tb 3+ ) within the host lattice. This results in pronounced tail absorption that compromises both color properties and solar reflectance. To address this issue, yttrium was introduced as a co-dopant following the charge compensation principle which effectively suppressed defect formation and reduced tail absorption intensity. This co-doping strategy successfully achieved a synergistic optimization of pigment color and solar reflectance. The optimized pigments exhibited a high b* value of 75 and an exceptional near-infrared reflectance of95.33 %. The simulation experiment revealed that coating based on the as-prepared pigment exhibited an internal surface temperature reduction of 15.5 °C compared to the conventional cement coating. These findings underscore that optimizing color and solar reflectance through chemical defect regulation represents a feasible approach for preparing high-performance colored cool pigments.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF LUMINESCENCE
·
2024
·
IF 3.3
X.Z. Zheng,Z.Y. Ye,Y.F. Zhang,L. Yue,Y.F. Lei,W.B. Dai
With the growing concern about energy consumption, white light-emitting diodes( w LEDs), as the fourth generation of lighting sources, are highly scrutinized by researchers. A series of Bi 3+ /Tb 3+ /Sm 3+ (co)doped BaY 2 Si 3 O 10 phosphors were prepared by traditional solid-state method, and the phase purity was analyzed by X-ray diffraction. In this work, Bi 3+ /Tb 3+ /Sm 3+ theoretically occupies the Ba/Y sites, and this conjecture is also proved by spectral analysis. Under near ultraviolet ( n UV) light excitation, Bi 3+ /Tb 3+ /Sm 3+ is respectively used as the blue ( 3 P 1 → 1 S 0 )/green ( 5 D 4 → 7 F j )/red ( 4 G 5/2 → 6 H j ) luminescence center. Due to the energy transfer (ET) efficiency between Bi 3+ /Sm 3+ is not ideal, Tb 3+ is introduced as a bridge to improve the ET efficiency of the whole system to achieve spectral tunability and application in w LEDs. And at different excitation wavelengths, Bi 3+ emits a wide range of blue to cyan light because it occupies two cation sites. We selected a proper excitation wavelength and obtained an emission spectrum covering the whole visible region. The CIE color coordinates (0.3487, 0.3313), the correlated color temperature (CCT, 4773.61 K), quantum efficiency (QE, 47.62 %), and thermal stability ( T 50 = 537 K) of BaY 2 Si 3 O 10 : Bi 3+ /Tb 3+ /Sm 3+ are discussed in depth, Lu 3+ was used instead of Y 3+ to improve the thermal stability of BYS. Its excellent luminescence performance indicates that this phosphor has potential applications in n UV w LEDs.
✓ 已验证
产品关联
DOI
高影响因子
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.
✓ 已验证
DOI
高影响因子
CHEMOSPHERE
·
2022
·
IF 8.943
Haiqing Wang,Zhenda Liang,Chao Liu,Lishan Zhu,Yongtao Xu,Li Zhou,Bing Yan
Developing low-cost and efficient materials for dye pollutant removal under mild condition remains a great challenge. Here K + and Tb 3+ co-doped porous MnO 2 (K–Tb–MnO 2 ) nanoparticles with tailored properties including crystal structure, surface area and catalytic activity have been synthesized. Experimental results reveal that K–Tb–MnO 2 nanoparticle has higher specific surface area, Mn 3+ content and surface oxygen vacancies than pristine MnO 2 nanoparticle and single-doped MnO 2 materials, showing the uniqueness of dual-doped metal ions . Using methyl blue (MB) as a model pollutant, its removal efficiency by K–Tb–MnO 2 nanoparticles within 5 min is 93.6%, which is 18, 8.3, and 2.9 times higher than that of MnO 2 , K–MnO 2 , and Tb–MnO 2 nanomaterials, respectively. Oxalic acid triggered MnO 2 material dissolving assay and FT-IR spectrum suggested that remarkable performance of K–Tb–MnO 2 nanoparticle toward MB removal can be attributed to a combined effect of adsorption (16% MB removal) and catalytic degradation (84% MB removal). Moreover, K–Tb–MnO 2 nanoparticle mediated MB degradation is demonstrated to be a combination of non-radical oxidation by Mn 3+ and radical-participated degradation, with 1 O 2 as the main species. And the intermediates and pathways of MB degradation were studied by liquid chromatography-mass spectrometry. Importantly, cell viability experiment suggests that the toxicity of MB dye could be efficiently alleviated after the treatment with K–Tb–MnO 2 nanoparticle. These results demonstrate the great potential of the novel K–Tb–MnO 2 particles to be used as a highly effective nanomaterials to reduce the risk of dye wastes toward the environment and human health.
✓ 已验证
DOI
PubMed
高影响因子
MICROCHEMICAL JOURNAL
·
2025
·
IF 5.1
Minqiao Feng,Chengyan Yin,Hailiang Qin,Wei Liu,Yunqi Wang,Ruth Antwi-Baah,Yao Rao,Shuxia Xu
Terminal deoxynucleotidyl transferase (TdT) is actively expressed in leukemia patients and plays an important role in maintaining the genetic diversity of an organism. Therefore, developing simple and sensitive analytical methods for the accurate detection of TdT in serum is of significant importance. Herein, an electrochemical biosensor based on a toluidine blue (TB)-loading mesoporous silica nanoparticles (MSN) was established for the detection of TdT in serum. First, MSN with amino group was synthesized and subsequently was carbonylated to obtain carboxyl-functionalized MSN (MSN-COOH), which was used to load TB. Thereafter, MSN-COOH was sealed with the substrate strand S(rA)-NH 2 of the Mg 2+ -dependent DNAzyme to form S(rA)-NH 2 /TB/MSN-COOH. In the presence of TdT, it can add deoxyadenosine triphosphate (dATP) to the 3’-OH end of Enc-5 A, activating its cleavage activity on the substrate chain S(rA)-NH 2 , thus releasing TB encapsulated in MSN-COOH. By measuring the change in the electrochemical signal of TB, the TdT concentration can be determined. The linear range is from 5 to 400 U/mL and the limit of detection (LOD) is 0.369 U/mL (3 σ/K). Since DNAzyme can be extended by TdT without the need of a template, the proposed biosensor demonstrates excellent selectivity towards TdT in the presence of other DNAzyme, such as T4 DNA ligase, phi29 DNA polymerase, DreamTaq DNA polymerase, and Klenow fragment ( exo -). Furthermore, the proposed biosensor was successfully applied to the detection of TdT in serum with the recovery rates ranged from 91.0 % to 94.7 %, indicating its potential for early detection of leukemia and other related diseases.
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）