JOURNAL OF HAZARDOUS MATERIALS
·
2025
·
IF 11.3
Ruiyu Fu,Jiawei Liu,Yongpeng Ma,Hongbo Li,Xiaoqin Hai,Jiaxiao Niu,Xiaoli Guo,Xin Di
Tetracyclines (TCs) residues pose a significant threat to the aquatic environment and human health, therefore this study aims to develop a simple, rapid, and sensitive TCs detection method. Herein, a dual-responsive gel probe (LDH-CES@N) was designed, consisting of the intercalation of graphene quantum dots into europium-doped layered double hydroxide (LDH). In the presence of TCs, the as-prepared probe exhibited dual emission fluorescence at 504 nm and 616 nm due to the synergistic effect of aggregation-induced emission and antenna effect. Meanwhile, the density functional theory was employed to validate the mechanism underlying TC-induced electron transfer from graphene quantum dots. The dual-signal response fluorescence probe has excellent detection ability of oxytetracycline, including a wide detection range (0–60 μM), low detection limit (0.145 μM), and rapid response time (120 s). Furthermore, combined with the smartphone, a portable and real-time detection platform was established for the visual detection of oxytetracycline in tap water and honey samples with desirable recovery rates (97.8 %-105.4 %). Therefore, this work provides a new strategy for fluorescence detection of trace pollutants, demonstrating considerable practical application potential.
研究领域:
环境科学
·
分析化学
·
生物医学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CARBOHYDRATE POLYMERS
·
2018
·
IF 5.158
Jie Lu,Qi Kang,Jianhong Xiao,Tao Wang,Ming Fang,Li Yu
Fabrications and applications of luminescent films have been an interesting and important challenge within the realm of academia and industry. Herein, a novel fluorescence-based strategy for the H 2 O 2 detection has been developed by fabrication of stabilized, thin, transparent, and luminescent films composed of europium-containing polyoxometalates (Eu-POM) and environmentally friendly chitosan (CS) via a facile solution casting approach. In comparison with pure Eu-POM, enhanced fluorescent properties are obtained from the as-prepared Eu-POM/CS films in terms of prolonged fluorescence lifetime and a remarkable fluorescent quenching effect in the presence of hydrogen peroxide (H 2 O 2 ). The fluorescence intensity of Eu-POM/CS films exhibits a linear correlation in response to the H 2 O 2 concentration over a wide range of 1.1–66 μM, with a detection limit of 0.11 μM. Furthermore, the fluorescent films display a high detection selectivity which are capable of differentiating hydrogen peroxide (H 2 O 2 ) from the interfering species, such as sugars, l -amino acids, and other metabolites. All these advances towards the development of Eu-POM/CS films open up new applications for luminescent films, but most importantly, they can help in the far-reaching technological implementations of a simple, cost-effective method for the detection of H 2 O 2 in many fields.
研究领域:
材料科学
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环境科学
·
分析化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ADVANCED MATERIALS
·
2025
·
IF 26.8
Rubing Bai,Peihao Huo,Nanlong Zheng,Yujia Li,Wenchao Yan,Peiyu Fang,Xiaoyu Zhou,Zuqiang Bian,Zhiwei Liu
Light-emitting electrochemical cells (LECs) have good prospects in the solid-state lighting field due to their simple single-layer structure and low manufacturing cost. However, the lack of high-efficiency blue LECs limits their development and further application. To solve this problem, many luminescent materials with various mechanisms such as fluorescence, phosphorescence, and thermally-activated delayed fluorescence are studied as emitters in LECs. Besides these materials, herein lanthanide europium(II) (Eu(II)) complex with d-f transition is demonstrated as a new type of emitter for LECs. In detail, a blue emitting Eu(II) complex bis[hydrotris(3-tert-butylpyrazolyl)borate]europium(II) is dispersed into 9-(3-(triphenylsilyl)phenyl)-9H-3,9′-bicarbazole host and tetrahexylammonium tetrafluoroborate electrolyte to make a blend film, which attains a high photoluminescence quantum yield of ≈100%. The LEC using the blend film as an active layer achieves a blue emission with Commission Internationale de L'Eclairage coordinates of (0.12, 0.18) and a record-breaking external quantum efficiency of 19.8%, corresponding to an exciton utilization efficiency of ≈100%. This work reveals that Eu(II) complex with d-f transition is a promising emitter toward high-performance blue LECs, which can inspire further research on Eu(II) complex based LECs.
研究领域:
材料科学
·
光学
·
电子工程
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产品关联
DOI
PubMed
高影响因子
MICROPOROUS AND MESOPOROUS MATERIALS
·
2017
·
IF 3.615
Jun Zhang,Dan Yue,Tifeng Xia,Yuanjing Cui,Yu Yang,Guodong Qian
A novel metal-organic framework film MIL-124 film was prepared on porous α-Al 2 O 3 ceramic plate by in situ synthesizing. After introducing Eu 3+ ions to the free -COOH sites of the MIL-124 ligand channels, a luminescent MOF film MIL-124@Eu 3+ was obtained. Based on the chemical reaction between NH 3 and the -COOH, the formation of -COONH 4 which was demonstrated by FT-IR spectrum, affected the energy transfer between Eu 3+ ions and ligand, quenching the characteristic emission of MIL-124@Eu 3+ film. The limit of detection to ammonia was calculated as 26.2 ppm in ambient air. The XRD results demonstrated the long-term stability of this ammonia sensor. The excellent performance and economical synthesizing strategy of the MIL-124@Eu 3+ film exhibited potential application of this sensor for detecting ammonia gas.
研究领域:
材料科学
·
化学传感器
✓ 已验证
产品关联
DOI
高影响因子
KEY ENGINEERING MATERIALS
·
2016
·
IF 0
D.C. Huang,You Fu Zhou,Chao Quan,Wen Tao Xu
New luminescent oxynitridosilicates doped with Eu2+ and Ce3+ have been synthesized by solid state reaction method at 1450oC. The host has the general formula La1-ySr1-xSiO3N: (yCe3+, xEu2+), which presents greenish-yellow or orange photoluminescence under UV/blue excitation. Remarkable long wavelength emissions centered above 565 nm were observed for the Ce3+ activated oxynitridosilicates, with compositions LaSrSiO3N:0.02Ce3+, and LaSrSiO3N:(0.02Ce3+, 0.02Eu2+) for 598 nm due to a significant amount of energy transfer from Ce3+ ions to Eu2+ ions. By combining the title LaSrSiO3N:(Ce3+, Eu2+) phosphors with the 450 nm InGaN chip, a broad range of white light with correlated color temperatures of ~3500 K and color-rendering index of 92 can be generated, demonstrating their promising practical applicability to the warm-white light-emitting diodes.
研究领域:
材料科学
·
光学工程
✓ 已验证
DOI
Nanomaterials
·
2022
·Vol. 12
·期 14
·2398
·
IF 5.719
Chunhui Song,Qifa Song,Ziyou Ding,Yingchao Han
In this study, we synthesized polyacrylic acid (PAA)-Ca (Eu) nanoclusters as a luminescence sensor of phosphate ion by a complex method, and we aimed to achieve the quantitative detection of PO43−based on the sensitivity of the charge transfer band of Eu3+to anionic ligand. The resulting PAA-Ca(Eu) nanoclusters showed a well-dispersed and a dot-like morphology, with an ultra-small diameter (the average size of 2.17 nm) under high resolution transmission electron microscopy(HRTEM) observation. A dynamic light scattering particle size analyzer (DLS) showed a hydrodynamic size of 2.39 nm. The (PAA)-Ca (Eu) nanoclusters as a luminescence sensor showed a significantly higher sensitivity for PO43−than other anions (CO32−, SiO32−, SO42−, SO32−, Br−, Cl−, F−). The luminescence intensity displayed a linear increase (y = 19.32x + 74.75, R2> 0.999) in a PO43concentration range (0–10 mM) with the concentration of PO43−increase, and the limit of detection was 0.023 mM. The results showed good recovery rates and low relative standard deviations. These (PAA)-Ca (Eu) nanoclusters are hopeful to become a luminescence sensor for quantitatively detecting PO43−.
研究领域:
材料科学
·
分析化学
✓ 已验证
DOI
高影响因子
PHYSICA B-CONDENSED MATTER
·
2026
·
IF 3.2
Defu Xu
A blue-light-excitable Y 2 W 3 O 12 :Eu FIR thermometer is developed using 466 nm excitation matched to commercial InGaN LEDs. • The negative thermal expansion effect endows the phosphor with excellent resistance to thermal quenching, retaining ∼40% of its emission at 603 K. • The thermometer achieves a maximum relative sensitivity of 0.15% K −1 , repeatability >99.3%, and low temperature uncertainty below 4.2 K from 363 to 603 K. The development of reliable and cost-effective fluorescence intensity ratio (FIR) thermometers for high-temperature environments is urgently required, yet most existing probes rely on near-infrared stimulated upconversion or ultraviolet excited downshifting, which suffer from high system complexity, optical damage, and high cost. In response to this dilemma, herein I report a blue-light-excitable FIR thermometer based on Eu 3+ -doped Y 2 W 3 O 12 (YWO) negative thermal expansion (NTE) phosphor. Under 466 nm blue excitation, the YWO:Eu phosphor exhibits efficient downshifting luminescence dominated by the 5 D 0 → 7 F 2 electric dipole transition at 612 nm, and the NTE effect endows the phosphor with excellent resistance to thermal quenching. The proposed thermometer achieves a maximum relative sensitivity of 0.15% K −1 , together with excellent repeatability (>99.3%) and low temperature uncertainty (<4.2 K) over the 363-603 K range. Also, the single-wavelength excitation strategy allows the use of a commercial blue light emitting diode (LED), eliminating the need for costly tunable lasers or dual-wavelength setups and thereby reducing system complexity and cost. These results demonstrate that the blue-light-excited YWO:Eu FIR thermometer is a promising candidate for non-contact photothermal feedback in high-temperature environments.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2025
·
IF 9.7
Shuang Cao,Zhuoyi Zhang,Yunshuo Wu,Yuxin Sun,Zhe Li,Yanxia Gao,Haiqiang Wang,Xuanhao Wu,Zhongbiao Wu
Nitrous oxide (N 2 O) is a potent greenhouse gas with high global warming potential. It is urgent to develop active and stabile catalysts for N 2 O direct catalytic decomposition (deN 2 O) in industrial exhaust gas. In this study, a series of Eu-doped NiO catalysts were synthesized by co-precipitation method. The catalyst with an Eu to Ni molar ratio of 0.04 showed the highest deN 2 O ability, reaching 100 % conversion at 400 °C without generating NO x by-products. The catalyst also displayed resilience against O 2 and NO impurity gases, maintaining structural stability and achieving complete transformation of N 2 O at 440 °C. Eu was uniformly dispersed in NiO in the form of Eu 2 O 3 , which not only regulated the particle size and specific surface area of NiO, but also changed the surface chemistry of NiO by inducing more Ni 2+ active sites and more mobile O β species. Eu-doping altered the decomposition mechanism of N 2 O from L-H to E-R mechanism, reducing the energy barrier of O 2 desorption, which was the rate-determining step. During the reaction, Eu 0.04 Ni showed an activation behavior after cyclic use and long-term reaction and reduced T 100 to 320 °C after 14-hr experiment. These findings demonstrate the potential of the catalyst for practical application and provide new routes for the direct decomposition of N 2 O in industrial exhaust gas.
研究领域:
环境科学
·
催化化学
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF LUMINESCENCE
·
2025
·
IF 3.6
Pengbo Zhu,Xiao Liu,Hao Ren,Yao Wang,Jun Li,Yan Zhang,Zhonglin Du,Qiao Wang,Soo Wohn Lee,Laurence A. Belfiore,Mikhail Artemyev,Jianguo Tang
Due to the quantum confinement effect, the quantum dots (QDs) behave distinguished photo-/electro-luminescence property. However, due to so small size with 3–5 nm diameter, their surface defects cause spectral limitation and luminescent instabilities, which inhibited the applications of QDs in key areas. It should be very interesting if rich luminescence spectra of lanthanides can be used to enhance the emission and to extend the spectra of sulfide-base QDs. However, the sulfur repellency of lanthanide ions (such as Eu 3+ ) is the negative factor. In this work, we incorporated lanthanide ions (Eu 3+ ) complexes into QDs to realize this. Diketone (i.e., acetylacetone (ACAC)) and phenanthroline (Phen) were chosen as the ligands of Eu 3+ (i.e., Eu) chlorides. The experimental data indicated that the incorporating Eu 3+ complexes into the ZnS-modified CIZS QDs resulted in double enhancement of the luminescent intensity, the blue-shift of emission wavelength from 637 to 575 nm, the PLQY increase from 55.94 % to 81.56 %. Simultaneously, the Zn 2+ in the shell, under the influence of the Eu 3+ , reacted with oxygen vacancies in the environment. XRD shows the characteristic peaks of ZnO, indicating the formation of ZnO QDs.
研究领域:
材料科学
·
纳米技术
·
光电子学
·
无机化学
·
固体物理
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2025
·
IF 5.6
Hang Liu,Chanyu Yang,Jinkai Zhang,Runkang Lv,Yihao Wen,Yuhong Zhang
In this paper, a series of Eu-doped ZnSnO 3 nanoblocks are prepared through one-step hydrothermal method. The structure and morphology of Eu-ZnSnO 3 nanoblocks are characterised using SEM,XRD, XPS and TEM tests. The gas-sensitive properties of Eu-ZnSnO 3 nanoblocks towards isopropanol are explored. Compared with pure ZnSnO 3 , the response of 4 % Eu-ZnSnO 3 sensor is enhanced nearly three times. The response recovery time was greatly improved by Eu doping, and the 4 % Eu-ZnSnO 3 sensor showed a recovery time of only 8/10s for 100 ppm isopropanol at 260 °C, which is a 2.9-fold reduction in recovery time. The catalytic effect of Eu and n-n heterojunction structure of Eu 2 O 3 -ZnSnO 3 all contribute to enhance the gas response. The results prove that the Eu-ZnSnO 3 nanoblocks have great potential for the detection of isopropanol.
研究领域:
材料科学
·
纳米技术
·
气体传感
·
无机化学
·
分析化学
✓ 已验证
产品关联
DOI
高影响因子
JOM
·
2023
·Vol. 75
·期 3
·859-871
·
IF 2.6
Xiong Sang,Liang Dong
Tungsten trioxide (WO 3 ) nanoparticles were prepared by the citric acid method, using ammonium paratungstate as the tungsten source, and doped with rare earth europium (Eu) under various pH values and Eu content. The microstructure, morphology, and luminescence properties of the prepared samples were characterized by XRD, SEM, and a fluorescence spectrometer. The results show that Eu 3+ doped WO 3 nanoparticles were successfully obtained by the citric acid method, the prepared nanoparticles were spherical and rhomboidal, and the average particle size of the prepared samples reached 56 nm. The excitation spectrum consisted of a series of linear excitation peaks in the range of 250–550 nm. The strongest excitation peak was located at 543 nm, which belongs to the 7 F 0 → 5 D 1 transition of Eu 3+ .
研究领域:
材料科学
·
光学
✓ 已验证
DOI
高影响因子
DALTON TRANSACTIONS
·
2019
·Vol. 48
·期 22
·7910-7917
·
IF 4.052
Xue-Ying Wu,Qi Zhao,Dong-Xue Zhang,Ya-Chuan Liang,Kui-Kui Zhang,Qian Liu,Lin Dong,Chong-Xin Shan
Luminescent hybrid materials based on nanodiamonds (NDs) and rare earth ions have been successfully synthesized by covalently modifying NDs with pyromellitic acid (PMA) which is capable of coordinating to Eu3+ and Tb3+ ions. With NDs acting as a host matrix, the PMA and rare earth ions serve as an organic sensitizer and activator, respectively, yielding a highly bright hybrid composite. Interestingly, for the co-doped hybrid composites ND-PMA-Eu/Tb, the intensity ratio of the two emissions, 5D4 → 7F5 transition (Tb3+) to 5D0 → 7F2 transition (Eu3+), is linearly related to temperature in the range from 77 K to 277 K. Therefore, the hybrid could be developed as a self-calibrated ratiometric luminescent thermometer due to its temperature-dependent luminescence performance.
研究领域:
材料科学
·
光学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）