JOURNAL OF THE ELECTROCHEMICAL SOCIETY
·
2019
·Vol. 166
·期 15
·D882
·
IF 3.12
Da-Wei Yang,Ke-Ke Chang,Xiao-Fei Hu,Ya-Lan Liu,Tai-Qi Yin,Shi-Lin Jiang,Mei Li,Wei Han,Zhi-Fang Chai,Wei-Qun Shi
The objective of this work is to explore the electrochemical and electrodeposition behaviors of Eu (III) cation at the liquid binary Al-Ga alloy cathode. In addition, the co-reduction behaviors of Eu (III), Al (III) and Ga (III) were also systematically studied on a W electrode. The results indicated that Eu (III) can be reduced on the binary Al-Ga alloy cathode, and Eu (III), Al (III) and Ga (III) also can be co-reduced on the W electrode to form Al-Eu/Ga-Eu intermetallic compounds. At the same time, the isothermal section phase diagram of the Al-Ga-Eu ternary system at 773 K was also calculated. In addition, Al-Eu and Ga-Eu alloys were prepared by potentiostatic and galvanostatic electrolyses in the LiCl-KCl-EuCl3 melt. Finally, the electrodeposition products were characterized by X-ray diffraction (XRD) and Scanning Electron Microscopy (SEM) coupled with Energy Dispersive Spectroscopy (EDS).
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
MATERIALS CHEMISTRY AND PHYSICS
·
2019
·
IF 2.781
Zhilin Li,Chongyue Jin,Chunmei Lv,Min Wang,Jin Kang,Shiyu Liu,Yuanhua Xie,Tong zhu
To further promote the visible-light photocatalytic efficiency of Bi 24 O 31 Cl 10 , g-C 3 N 4 /Eu(III) doped Bi 24 O 31 Cl 10 heterojunction composites (CN/Eu-BCO) were successfully synthesized via modified solution combustion and immersion-calcination method. The effects of Eu(III) dopants and g-C 3 N 4 coupling on the micro-structures and the photocatalytic efficiency of Bi 24 O 31 Cl 10 towards Rhodamine B (RhB) degradation were investigated in detail. The results displayed that Eu(III) doping and coupling with g-C 3 N 4 can largely promote the photocatalytic efficiency of Bi 24 O 31 Cl 10 . The photodegradation rate of RhB over 5CN/0.01Eu-BCO can reach to be 91.9% in 40 min, which was 8.46 folds of Bi 24 O 31 Cl 10 , 1.91 folds of 0.01Eu-BCO, and 1.72 folds of 5CN/BCO. The main radical species being responsible for RhB degradation were ● O 2 − and ● OH. Furthermore, 5CN/0.01Eu-BCO composite photocatalyst exhibited good reusability and stability.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
TALANTA
·
2020
·
IF 5.339
Fangzheng Yuan,Xia Wu,Hui Zhang
An intrinsic Eu(III) luminescence phenomenon of Eu(III) complex was found under near-infrared light (NIRL) excitation of xenon lamp, and the maximum excitation wavelength is about twice the excitation wavelength of its Stokes fluorescence. The NIRL excitation fluorescence was mainly originated from second order diffracted light (SODL) excitation. The Eu(III) complex was consist of Eu(III), Gd(III), 2-trifluoroacetylacetone (TTA) and cetyltrimethylammonium bromide (CTAB). Curcumin (Cur) could notably quench the luminescence intensity of the Eu(III) complex. Based on this, a sensitive method for Cur detection was developed. Under optimum conditions, the decrease extent in the fluorescence intensity at 611 nm exhibited a good linear relationship with the Cur concentration in the range of 2.0 × 10 −9 mol/L - 6.0 × 10 −8 mol/L under 746 nm excitation, the limit of detection (LOD, S/N = 3) was 5.2 × 10 −10 mol/L. While, the linear relationship and the LOD of Stokes fluorescence method ( λ ex / λ em = 360/611 nm) were found to be 1.0 × 10 −8 mol/L - 6.0 × 10 −8 mol/L and 2.6 × 10 −9 mol/L, respectively. The former method is superior to the latter one in Cur detection. Both two methods were successfully applied to determine Cur in real samples. The luminescence mechanism of Eu(III) complex under the NIRL excitation and the quenching mechanism of Cur on the Eu(III) fluorescence was also investigated.
研究领域:
分析化学
·
生物医学
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
·
2024
·
IF 1.5
Wang Xuebin,Mao Guoshu,Yu Shengjie,Fu Zhihai,Yue Yuanzhen,Zhang Shengdong,Ding Youqian,Huang Kun,Zhang Xian,Sun Xiaoyi
Responding to the need for radioactive waste disposal, the static and dynamic adsorption of Eu 3+ on TODGA-C resin in HNO 3 was investigated. The findings indicated that the adsorption of Eu 3+ on TODGA-C adheres to the quasi-second-order kinetic model. Additionally, the distribution coefficient for Eu 3+ adsorption on TODGA-C reaches 10 5 mL/g in 4 mol/L HNO 3 . Under the conditions of 3.5 mol/L HNO 3 , a flow rate of 3.6 mL/min, and an initial Eu 3+ concentration of 10 mg/L, the Thomas rate constant was found to be 1.2 mL/(mg·min), with a dynamic saturation capacity of 15 mg/mL.
研究领域:
放射性废物处理
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2021
·
IF 13.273
Ting Du,Jing Wang,Liang Zhang,ShaoChi Wang,Chengyuan Yang,Linxuan Xie,Zhaoli Liu,Yongsheng Ni,XiangHong Xie,Jing Sun,Wentao Zhang,Jianlong Wang
The creation of defects into luminescent MOFs allows for manipulation of fluorescent properties and thus leads to the enhanced detection performance for technological applications. Herein, a modulator-induced defect formation strategy was proposed to introduce missing-linker defect into lanthanide-based metal–organic framework (Eu@UiO-MOFs) and the enhanced detection properties was investigated. Notably, the missing-linker numbers in per Zr 6 cluster were calculated to facilitate comparison and quantitively interpretation. By elaborately tailoring defect numbers, the resultant Eu@UiO-MOFs-2 sensor with 0.53 missing linkers per Zr-O cluster showed a remarkably enhanced response slope and realized excellent trace detection under the range of 0–10 ppm with ultralow detection limit to 5.67 × 10 −7 M (114 ppb), acting as a powerful signal amplifier for trace detection of Cd 2+ . Moreover, the relationship between structural change and defect numbers of Eu@UiO-MOFs-X has been studied to understand the positive effect of the improved enrichment for the optical behavior. As far as we know, this is the first experimental demonstration of missing-linker defects in luminescent MOFs for regulation of optical sensing, offering a unique approach to explore innovative technologies for precisely detecting of heavy metal ion pollutants.
研究领域:
材料科学
·
环境科学
·
光学传感
✓ 已验证
产品关联
DOI
高影响因子
ANALYTICA CHIMICA ACTA
·
2025
·
IF 6
Jingyi Xiao,Yi Ren,Menglong Liu,Yiyao Liu,Litao Chen,Jiayan Gao,Jinyang Li,Xue Gao
This study intends to create a ratiometric fluorescence probe utilizing aptamers for the detection of Vibrio parahaemolyticus ( V. parahaemolyticus ) in aquatic products. In this design, aptamer-functionalized magnetic nanoparticles specifically capture V. parahaemolyticus , while boric acid on Eu (III)-Based Metal-Organic Framework (Eu-MOF) interacts with glycolipids present on bacterial cells, thereby achieving dual recognition of V. parahaemolyticus . This fluorescent probe quantitatively detects V. parahaemolyticus by measuring the intensity of ratio fluorescence. The sensor demonstrates a detection range from 77 to 7.7×10 7 CFU/mL, possessing a detection threshold down to 1 CFU/mL. Moreover, the developed method based on Eu-MOF had been successfully applied to real samples. To achieve rapid on-site detection of V. parahaemolyticus , the study designed a portable smartphone sensor that confirms its capability for rapidly detecting pathogens and contributes significantly to establishing a system for regulating safety in detecting food and environment.
研究领域:
生物传感
·
食品安全检测
·
微生物学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
·
2024
·Vol. 333
·期 4
·2195-2206
·
IF 1.5
Li Junze,Zhao Chuang,Guo Wenbin,Gao Yang,Liu Tingting,Zhou Yu,Hou Hongguo,Jiao Caishan,Zhang Meng
Using DMDODGA as the carrier, the transportation and separation behavior of Eu(III) and La(III) were studied using a plate-type supported liquid membrane. La(III) and Eu(III) reach their maximum transport rates at feed phase nitric acid concentrations of 2 and 4 mol/L, which are 72.41 (± 2.12)% and 77.80 (± 2.45)%; Increasing the concentration of NO 3 − in feed phase will promote the transport of both ions. The change of HNO 3 concentration in feed phase had major effect on the separation of Eu(III)/La(III), and the co-transport of Eu(III)/La(III) was observed when the concentration of NO 3 − was 3 mol/L.
研究领域:
化学工程
·
分离科学
✓ 已验证
DOI
高影响因子
JOURNAL OF MOLECULAR LIQUIDS
·
2023
·
IF 6
Ying Dai,Yan Li,Wenmei Hu,Qinqin Tao,Zhirong Liu
Lanthanides/actinides separation is of importance in many modern industrial engineering fields, e.g. the circulation of the nuclear fuel and rare earth. N,N-dioctyl diglycol amic acid (briefly as DODGA) is known as an effective extractant for extraction of rare earth metal. In this work, two extractants, [N 1888 ][DODGA] and [N 4444 ][DODGA], were developed by using quaternary ammonium as cations and DODGA as anion. The resultant ionic liquids were used to separate europium from europium-uranium binary component system. The influence of several factors (nitric acid concentration, contact time, temperature, metal ions, extractant concentration, salting agent concentration and stripping) were analyzed. The coordination chemistry of Eu(III) with [N 1888 ][DODGA] and [N 4444 ][DODGA] were investigated by the mole-ratio method. The experimental results confirmed that the separation factors ( SF ) of Eu(III)/U(VI) were reached 55.44 and 60.35 for [N 1888 ][DODGA] and [N 4444 ][DODGA]. The stoichiometry of the complex of Eu(III) and [N 1888 ][DODGA] or [N 4444 ][DODGA] were determined as 1:3. Excellent extraction of the target metals and prominent separation factors using these ionic liquids showed that they were viable to separate lanthanides from actinides.
研究领域:
化学工程
·
核能科学
·
分离科学
✓ 已验证
产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2021
·
IF 6.707
Lijia Dong,Shengbo Li,Yefei Jin,Baowei Hu,Guodong Sheng
In this paper, CaAl hydrotalcite or hydroxyapatite decorated invasive plant ( Solidago canadensis )-derived biochar were synthesized by co-precipitation and high temperature pyrolysis method. The three composites and bare biochar were characterized by Scanning electron microscopy (SEM), X-ray spectroscopy (EDX), the Fourier transform infrared spectroscopy (FT-IR), X-ray diffractometer (XRD), and X-ray photoelectron spectroscopy (XPS) techniques, and employed to remove Eu(III) from wastewater under a series of environmental conditions. The results indicated that the Eu(III) adsorption on BC@LDH@HAP was higher than that on BC, BC@LDH, and BC@HAP, and belonged to multi-layer adsorption, which was different from the monolayer adsorption of biochar. The adsorption could be fitted best by Langmuir model and the maximum adsorption capacity of Eu(III) on BC@LDH@HAP was up to 714 mg/g at pH ~ 6. The characterization results suggested that this excellent adsorption of BC@LDH@HAP arose from the abundant P-, C-, O-containing functional groups rather than larger specific surface area. The spectra of XPS, FT-IR, and XRD uncovered that the adsorption mechanisms of Eu(III) on BC@LDH@HAP involved surface complexation, ion exchange, and precipitation. Moreover, the absorbed Eu(III) was formed into two precipitate induced by P-containing groups and carbonate groups. This research confirmed BC@LDH@HAP is a promising material for the removal of Eu(III) in wastewater.
研究领域:
环境科学
·
材料科学
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产品关联
DOI
高影响因子
FOOD CHEMISTRY
·
2021
·
IF 7.514
Kuiyu Yi,Lei Zhang
An ingenious nanoscale fluorescent sensor derived from Eu 3+ -postfunctionalized MIL-53 (Al) (Eu 3+ @MIL-53 [Al]) was fabricated though a simple and effective approach. Malachite green (MG) effectively turned off the luminescence of Eu 3+ @MIL-53 (Al) via fluorescence resonance energy transfer (FRET), thus enabling MG sensing. The developed probe exhibited instantaneous reusability after being cleaned with deionized water. The fluorescence intensity, quenching efficiency, and crystal structure of the recoverable sensor after five recycling processes were unchanged compared with those of the original sample. Moreover, the potential mechanism of MG detection was revealed in detail. This work represents the first attempt to determine MG in aquaculture water and products by using metal–organic frameworks (MOFs). The Eu 3+ @MIL-53 (Al) probe proved to be a remarkable fluorescence probe for MG with high selectivity, sensitivity, and excellent regeneration capability. It provides a promising functional platform for the recognition of illegal MG addition to aquaculture water and products.
研究领域:
材料科学
·
环境科学
·
分析化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
TALANTA
·
2025
·
IF 6.1
Shuyun Zhu,Kunming Sun,Shuyi Liu,Qian Wang,Jiatong Fan,Xian-En Zhao,Guobao Xu
Flavonoid glycosides are formed by dehydration condensation of aglycones and sugar molecules. Therefore, discrimination of flavonoid glycosides from their corresponding aglycones is a challenging task because they contain the same aglycone part in their molecular structures. Herein, boric acid-functional Eu(III)-organic framework (BA-Eu-MOF) was applied to discriminate flavonoid glycosides including baicalin (Bai), wogonoside (Wog), rutin (Rut), puerarin (Pue), quercitrin (Que) and astragalin (Ast) from their corresponding aglycones for the first time. Besides as organic ligand to sensitize the luminescence of Eu 3+ through “antenna” effect, 5-boronobenzene-1,3 dicarboxylic acid provided recognition site for flavonoid glycosides. Infrared, fluorescence, UV–vis, and mass spectra were used to investigate the recognition reaction between BA-Eu-MOF and flavonoid glycosides. The data indicated that the cis -diols of flavonoid glycosides from sugars covalently bonded to boric acid group to form cyclic boronic esters, which quenched the fluorescence of BA-Eu-MOF at 620 nm through decreasing the intersystem efficiency, inner filter effect and photoelectron transfer. In contrast, aglycones could not alter the fluorescence of BA-Eu-MOF because of no covalent bond between them. This probe exhibited high sensitivity towards flavonoid glycosides with the low detection limits of 3.3 nM, 3.5 nM, 33 nM, 56 nM, 5.1 nM and 5.5 nM for Bai, Que, Wog, Ast, Pue and Rut, respectively. The unique recognition ability of boric acid group enables selective and sensitive detection of flavonoid glycosides without the interference of their corresponding aglycones.
研究领域:
化学
·
药理学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Materials Chemistry C
·
2022
·Vol. 10
·期 19
·7633-7640
·
IF 8.067
Haifeng Sha,Bing Yan
As the basic units of proteins, the importance of amino acids in organisms is self-evident and therefore detection of the concentration of amino acids is significant in monitoring human health. Herein, a dual-responsive Eu3+-functionalized metal–organic framework (MOFs) luminescent film (1@SA) was designed and prepared, which not only realizes the simultaneous detection of aspartic acid (Asp) and arginine (Arg) but also has the possibility of being applied in anti-counterfeiting. A portable film sensor is obtained through the cross-linking and solidification of Eu3+ ions and sodium alginate (SA) hydrogel containing uniformly dispersed MOFs. The MOF used in this work is a zinc metal–organic framework (ZnMOF) comprising uncoordinated carboxyl groups that can provide binding sites for Eu3+ ions. Moreover, it is found that the sensor shows unique fluorescence changes under the stimulation of an acidic environment. Therefore, the quantitative detection of Asp and Arg by 1@SA can be achieved, and optical anti-counterfeiting platforms are also designed according to the diversity of fluorescence changes. The new strategy proposed in this work may broaden the scope of lanthanide fluorescence films used in optical fields.
研究领域:
生物传感
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光学材料
·
分析化学
✓ 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）