MICROCHEMICAL JOURNAL
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2026
·
IF 5.2
Yinjiang Leng,Jing Zhang,Tao Xu,Yi Ma,HuiBo Luo,Danqun Huo,Suyi Zhang,Changjun Hou
A triple-channel R6G@Eu-MOF fluorescent probe was developed for multi-signal sensing. • A six-channel sensor array was constructed using two solvent-dependent fluorescence responses. • The sensing mechanism involved hydrogen bonding and Eu excited-state/O–H oscillator coupling. • The platform enabled discrimination of organics, Baijiu, and other distilled liquors. Rapid discrimination of Baijiu is of interest for preliminary quality assessment and authenticity screening. In this work, a single-probe multi-channel fluorescent sensor array was developed based on R6G@Eu-MOF for Baijiu discrimination. By integrating rhodamine 6G (R6G) and Eu 3+ into one MOF platform, R6G@Eu-MOF provided three intrinsic emission signals at 550, 594, and 615 nm. Unlike conventional sensor arrays that usually require multiple sensing materials, this strategy expanded the three emission outputs into a six-channel response pattern by using DMF and ethanol as two distinct probe-dispersing microenvironments. Owing to differences in polarity, hydrogen-bonding ability, and chemical composition, different analytes induced characteristic fluorescence-response fingerprints. The response behavior was attributed to hydrogen-bonding interactions, modulation of the R6G microenvironment, coupling of the Eu excited state with O H oscillators, and possible inner filter effects. Based on this strategy, 16 representative organics and EtOH-water mixtures with different ratios were effectively discriminated. Under the current experimental conditions, 16 representative commercial Baijiu samples were clearly separated in the LDA analysis, and blind-sample validation showed a recognition accuracy of 90.6%. The array was also extended to other distilled liquors. This work provides a simple and material-efficient fluorescent-array strategy for pattern-recognition analysis of complex liquor samples. Scheme 1 Schematic illustration of R6G@Eu-MOF fluorescent sensor array for Baijiu discrimination. Download: Download high-res image (150KB) Download: Download full-size image
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高影响因子
Journal of Energy Storage
·
2026
·
IF 10.7
Jie Hu,Jiangyu Wu,HongMin Chen,Xiaoqin Du,Jingxia Chen,Hong Li,Yu Deng,Jianghua Wu
In this study, the electrochemical performance of cobalt oxide was significantly enhanced through europium (Eu) doping. Nanoneedle-shaped Eu-doped Co 3 O 4 (ECO) was synthesized via a solvothermal method followed by annealing. ECO exhibited a specific capacitance of 1496 F g −1 at a current density of 1 A g −1 , which is superior to that of pristine Co 3 O 4 . Aberration-corrected scanning transmission electron microscopy (AC-STEM) confirmed the successful incorporation of Eu into the crystal lattice. Density functional theory (DFT) calculations revealed that Eu doping narrowed the bandgap, thereby improving electrical conductivity and reaction kinetics. The resultant asymmetric supercapacitor device achieved an energy density of 47.5 Wh k g −1 at a power density of 750 W k g −1 , while maintaining 91.2% of its initial capacitance after 10,000 cycles. This work highlights the potential of ECO as a high-performance electrode material for supercapacitors.
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高影响因子
Analytical Methods
·
2026
·
IF 2.6
Bingyu Fu,Yanru Shao,Zhixiong Zheng,Shengxin Wen,Yingli Guo,Qi Xu,Hualin Yang
In this study, a simple and sensitive dual-mode biosensor was designed based on the color of 2,6-dichloroindiphenol (DCIP) and the fluorescence of calcein. The target alkaline phosphatase (ALP) can catalyze the dephosphorylation of L-ascorbic acid-2-phosphate (AAP) to form ascorbic acid (AA) and phosphate ions. The reducing properties of AA can reduce the DCIP from blue to colorless. Meanwhile, phosphate ions can chelate with europium ions (Eu 3+ ) to restore the fluorescence of Eu 3+ -Calcein. In colorimetric mode, the linear detection range for ALP was 1.56-50 U/L with a limit of detection (LOD) of 0.27 U/L. In fluorescence mode, the linear detection range was 0.78-25 U/L and LOD was 0.23 U/L. Besides, the selectivity of this dual-mode for ALP was very excellent and the recovery rates in serum samples were also satisfactory.
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PubMed
高影响因子
Journal of Energy Storage
·
2026
·
IF 9.8
Yong Tang,Jianwei Zhao,Yi Li,Yujing Wang,Guangqiu Zhang,Yihang Zhao,Lirong Qin
In this study, we successfully synthesized europium (Eu)-doped V 2 O 5 nanosheets grown on carbon cloth via a hydrothermal method for use as a high-performance aqueous zinc ion batteries (AZIBs) cathode. The incorporation of Eu not only facilitates electrolyte diffusion but also mitigates electrode volume expansion during cycling, thereby significantly enhancing electrochemical stability. Remarkably, the optimized material demonstrates outstanding electrochemical properties, delivering a high specific capacity of 460 mAh/g at 1 A/g. Moreover, it exhibits excellent cycling stability, retaining 78 % of its initial capacitance after 5000 cycles at a high current density of 10 A/g, along with a low charge transfer resistance of 132 Ω. Furthermore, Eu doping substantially improves the Zn 2+ ion diffusion coefficient, elevating it to the order of 10 −8 cm 2 /s. And with the increase of temperature, the specific capacity of the battery continues to increase until 70 °C, when the maximum value is reached, and the specific capacitance increases by 15 %. These compelling results highlight the great potential of Eu-doped V 2 O 5 as an advanced energy storage material.
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高影响因子
SURFACE ENGINEERING
·
2022
·
IF 2.451
Sang Xiong,Ruo-tian Wang
Europium nitrate, ammonium tungstate and hexadecyl trimethyl ammonium bromide were used, and Eu-doped WO3 (WO3:Eu3+) nanopowder was synthesized by the micro-emulsion method. Tetraethyl silicate was hydrolysed into SiO2 and WO3:Eu3+ nanopowder coated with SiO2 (SiO2/WO3:Eu3+) was obtained. The microstructure and morphology of the prepared nano-SiO2/WO3:Eu3+ powders were characterized by XRD, SEM, TEM and HRTEM. Results showed that the prepared nano-SiO2/WO3:Eu3+ powders composed of WO3 of monoclinic and SiO2 of amorphous, which was spherical and granular, and the grain size reaches 50 nm. The tribological behaviour of nano-SiO2/WO3:Eu3+ as extreme pressure and anti-wear additive in the water-based fluid was studied by a four-ball machine. The results demonstrate that nano-SiO2/WO3:Eu3+ exhibits superior load-bearing capacity, anti-wear and anti-friction performance in water-based fluid, especially when the optimal concentration of nano-SiO2/WO3:Eu3+ is 0.4 wt-%. WSD, COF and wear volume of the nano-SiO2/WO3:Eu3+ decreased by 62.43%, 30.20% and 67.34%, respectively, compared with that of the water-based fluid.
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高影响因子
JOURNAL OF LUMINESCENCE
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2022
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IF 4.171
Yumeng Jia,Zhongxiang Shi,Jing Wang,Xiang Li,Zhengkai Zhao
Rare-earth-doped luminescent materials have great application prospects in anti-counterfeit identification. First, LaOF:Er, Eu phosphors with multi-mode luminescence were prepared by a heat treatment precursor using a hydrothermal method . Experimental results show that the emission intensity in green and orange-red light regions can be adjusted by regulating the raw material concentration of Eu 3+ . Upon excitation at 380 and 395 nm, a series of samples was observed to be green and orange-red, respectively, which indicates multi-mode luminescence characteristics. Study on variation of the environment around Eu 3+ ions based on the unique “probe” characteristics of Eu 3+ . Moreover, the prepared powder was applied to develop latent fingerprints on different substrates, which resulted in clearly defined friction ridge details of fingerprints under 395 nm ultraviolet light. Finally, according to these luminescent features, we chose the appropriate phosphors to make a series of luminescent patterns. The typical examples demonstrate that the multi-mode luminescent characteristic of the patterns can be used in anti-counterfeiting.
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高影响因子
MICROCHEMICAL JOURNAL
·
2022
·
IF 5.304
Zhizhou Liu,Tong Wang,Liang He,Xueyan Nan,Xuming Sun,Pengli Bai
Bacillus anthracis, an extremely dangerous bacterium which can cause pulmonary anthrax and be used as biochemical weapon agent, can be detected by the detection of its major biomarker 2, 6-pyridine dicarboxylic acid (DPA). Herein, we reported the solvothermal synthesis of a non-luminescent NH 2 -BDC-Eu-MOF using Eu 3+ and 2-aminoterephthalic acid (NH 2 -BDC). The emission of amino ligand and Eu 3+ ions are absent in ethanol while the addition of DPA could recover both emission at 460 and 624 nm respectively. Thus this MOF can act as a dual emission ‘‘turn-on’’ probe for DPA detection. The detection limits (LOD) of this DPA probe are about 0.8 μM in ethanol and 0.36 μM in water, which are much lower than an infectious dosage of bacillus anthracis spores (60 μM) for human being. In order to monitor DPA levels more conveniently, we developed a one-to-two decoder logic gate operation, which can determinate DPA via color discrimination.
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高影响因子
ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE
·
2023
·Vol. 649
·期 20
·e202300091
·
IF 1.4
Zhongzhi Wang,Rui Shi,Pengcheng Hao,Xin Qiao,Senchuan Song
In this work, a Eu(TTA) 3 BIP complex with a novel structure was synthesized and characterized. The Eu(TTA) 3 BIP complex has a wide excitation band and can be excited by light in the ultraviolet and blue regions. The characteristic red light of Eu(III) is emitted when the complex is excited. The use of the 2-(Pyrimidin-2-yl)-1H-benzo[d]imidazole (BIP) ligand improved the UV resistance of the complex. Moreover, the blue light reducing film prepared by the Eu(TTA) 3 BIP complex can effectively weaken blue light irradiation. In addition, the Eu(TTA) 3 BIP complex exhibits fluorescence thermal quenching properties. This provides the possibility for temperature sensing.
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高影响因子
Optoelectronics Letters
·
2020
·Vol. 16
·期 4
·293-297
·
IF 0
Li Peng,Zhang Hong-yan,Li Zhi-jun,Zhang Jun
The influence of polyvinylpyrrolidone (PVP) and monoethanolamine (MEA) as surfactants on photoluminescence (PL) of Eu-doped ZnO (ZnO:Eu) has been studied. X-ray diffraction (XRD) results show that there are more Eu 3+ ions to replace Zn 2+ ions into ZnO lattice for ZnO:Eu in the presence of surfactant MEA. From the spectral analysis for ZnO:Eu with different surfactants by Gaussian deconvolution, it can be seen that the use of MEA as a surfactant affects the energy transfer from ZnO host to Eu 3+ ions and leads to three new emission peaks, including UV emission (389 nm), violet emission (411 nm) and green emission (506 nm).
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CERAMICS INTERNATIONAL
·
2018
·
IF 3.057
Chao Xia,Caiyan Yu,Mengmeng Cao,Jinfeng Xia,Danyu Jiang,Guohong Zhou,Dafeng Zhang,Huili Li
In this work, a new Eu and Tb co-doped luminescent compound based on MOF-5, [Zn 4 O(BDC) 3 ], (named as compound 1 ) was successfully synthesized. The structure and morphology characterizations demonstrate that the initial framework of MOF-5 is retained well after co-doping Eu and Tb. The systematic investigations of photoluminescence behaviors reveal that the heat-treated compound 1 (called as compound 1a ) can be utilized as a multi-channel readout luminescent thermometer in emission intensity ratio, decay time ratio, and luminescence color. It simultaneously exhibits the excellent repetitiveness and reversibility under high temperature region from 303 to 473 K. The relative sensitivity of 1.8%/K at 473 K is much higher than the best one of 1.19%/K previously reported for the mixed-lanthanide MOF Tb 0.8 Eu 0.2 BPDA. Until now, such a ratiometric luminescent thermometer with a high sensitivity at the temperature as high as 473 K has been rarely explored.
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高影响因子
MATERIALS RESEARCH BULLETIN
·
2013
·
IF 1.913
Weimin Du,Zhaoqiang Zhu,Xiaofen Zhang,Dacheng Wang,Donghe Liu,Xuefeng Qian,Jimin Du
Zirconia modified by Samarium/Europium, RE/ZrO 2 (RE = Sm , Eu ), composite oxide nano-materials have been successfully synthesized by improved sol–gel method. Characterization results show that X-ray diffraction (XRD) peaks of products gradually shift to the lower angle with the increase of rare earth which implies that the lattice distances of RE/ZrO 2 nano-materials are gradually enlarged. Moreover, the molar ratios between zirconium and rare earth are consistent with the chemical formula and both of them are uniformly distributed in samples. Optical properties indicate that defect structures and electron configurations of RE/ZrO 2 (RE = Sm , Eu ) with single phase determine their absorption properties on visible light. Photocatalytic experiments indicate Zr 0.8 Sm 0.2 O 2− δ nano-crystals have excellent visible-light-responsive photocatalytic activities on Methylene blue and Rhodamine B which results from the special defect structure, suitable electronic configuration, and larger specific surface area. It follows that Zr 0.8 Sm 0.2 O 2− δ nano-crystals are new visible-light-responsive photocatalysts which can be applied in dye wastewater treatment and environmental protection in the future.
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高影响因子
CERAMICS INTERNATIONAL
·
2016
·
IF 2.758
Jie Chen,Xiuqing Zhou,Ye Sheng,Xiaoming Xie,Murad M.A. Abualrejal,Meiqi Chang,Zhan Shi,Haifeng Zou
A series of size controllable Tb 3+ and/or Eu 3+ activated nano-sized silica phosphors have been successfully synthesized through a facile sol-gel method. The structure, morphology, compositions, and luminescence properties of as-prepared samples were well investigated using X-ray diffraction (XRD), scanning electron microscope (SEM), energy dispersive spectrometer (EDS), X-ray photoelectron spectroscopy (XPS), Brunauer-Emmett-Teller (BET) and photoluminescence spectroscopy (PL). The results showed that all as-prepared samples were spherical nanoparticles but the sizes reduced gradually with the temperature increased from 25 °C to 65 °C, which was contrary to the BET surfaces as well as the luminescence intensity. Under ultraviolet excitation, the SiO 2 :Ln 3+ (Ln=Eu, Tb) spherical nanoparticles showed characteristic red and green emissions corresponding to f-f transition of Eu 3+ and Tb 3+ , respectively. Moreover, the luminescence emissions of samples can be tuned from green to yellow, orange and red by co-doping the Tb 3+ and Eu 3+ ions in different concentration ratio into the SiO 2 host due to the efficient dipole–dipole energy transfer mechanism from Tb 3+ to Eu 3+ under 377 nm excitation. These results show that as-prepared phosphors may find potential applications in color display fields.
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高影响因子
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