ACTA MATERIALIA
·
2026
·
IF 10.7
Qinghu Guo,Ting Wang,Xiangyu Meng,Dongxu Li,Xiaoyi Gao,Zhonghua Yao,Weiping Gong,Huajun Sun,Hanxing Liu,Hua Hao,Shujun Zhang
Piezoelectric actuators are essential components in precision positioning and force generation systems, often operating under complex multiphysics conditions. In this work, soft-type 2.5%Eu-doped 0.52PMN-0.33PT-0.15PZ piezoelectric ceramics with high piezoelectric charge coefficient d 33 = 1030 pC/N and piezoelectric strain coefficient d 33 * = 1120 pm/V were prepared, the electromechanical properties were systematically investigated under varying electric fields, uniaxial mechanical prestresses and temperatures. The results reveal that the strain exhibits a variation of ≈ 50% over the applied mechanical prestress range of 0 - 50 MPa, while showing a variation of < 20% across the tested temperature range 30 - 120°C. This demonstrates that within the tested ranges, mechanical stress is the dominant external factor governing the electromechanical response. With increasing prestress, the strain initially increases—reaching a maximum of 0.150% at 20 MPa—due to stress-assisted non-180° domain switching, and then decreases under higher stress due to domain wall clamping. This behavior reflects a transition from an electric field-controlled regime (< 20 MPa) to a stress-controlled regime (> 20 MPa), where domain wall mobility is suppressed and temperature-dependent phase transition effect is mitigated. Notably, the ceramic achieved a high mechanical work density of 0.040 J/cm 3 with electromechanical conversion efficiency of 46.4% at 40 MPa, while maintaining excellent temperature stability across all prestress conditions. These findings highlight the critical role of domain switching dynamics and stress-temperature coupling in determining actuator behavior, providing valuable design insights for the development of high-performance piezoelectric actuators with improved durability, reliability, and energy efficiency under extreme operational conditions.
✓ 已验证
产品关联
DOI
高影响因子
Journal of Environmental Chemical Engineering
·
2026
·Vol. 14
·期 3
·122439
·
IF 7.5
Yourong Zhao,Yuhong Xie,Yiying Wang,Hongda Li,Daojiang Gao,Zhanglei Ning
Excessive levels of phosphate ions (PO 4 3- ) pose serious risks to human health and environmental ecosystems. In this work, a ratiometric fluorescent probe, G-CDs@Eu-MOFs composite, was designed and synthesized via a post-synthetic modification strategy. The composite was employed for selective detection of phosphate ions. The resulting probe displays two well-resolved fluorescence emission peaks at 419 nm and 616 nm, which exhibits distinct responses to phosphate ions, thereby providing an intrinsic self-calibration capability. Upon interaction with PO 4 3- , the probe demonstrates a strong linear response (I 419 /I 616 ) over the concentration range of 10 −4 M to 4.5 × 10 −3 M, with a high correlation coefficient (R 2 = 0.9986). The detection limit (LOD) is determined to be 0.927 μM. A clear fluorescence color shift from blue-red to blue allows for rapid visual identification of phosphate. Furthermore, by integrating the probe with a smartphone-based platform, a user-friendly, accurate, and portable approach is established for on-site and real-time monitoring of phosphate. This strategy shows considerable promise for environmental and biomedical applications.
✓ 已验证
产品关联
DOI
高影响因子
MICROCHIMICA ACTA
·
2026
·Vol. 193
·期 6
·401
·
IF 5.4
Zhang Xiaohui,Yang Shuai,Pan Lifei,Zhong Jiapeng,Chen Pengsheng,Zhai Haiyun
A dual-emission, ratiometric fluorescence sensor is reported based on a europium(III)-doped metal-organic framework (Eu/DUT-52) that exhibits blue emission from DUT-52 and red emission from Eu³⁺. Notably, we fond that aflatoxin B1 (AFB1) enhances the fluorescence intensity of DUT-52, whereas the Eu³⁺ emission remains essentially unchanged, enabling ratiometric detection with a concentration-dependent color change from pink to purple. We further investigated the origin of this fluorescence enhancement. The ratiometric response provides a detection limit of 3.9 ng mL⁻¹. For field deployment, Eu/DUT-52 was embedded in a hydrogel to form a simple assay kit, and AFB1 was quantified by smartphone-based RGB analysis of fluorescence images, enabling instrument-free readout with a detection limit of 0.04 µg mL⁻¹. The hydrogel sensor shows good selectivity against other mycotoxins and common metal ions with recoveries of 80.59–111.7% in real samples. This work provides a low-cost, recognition-element-free platform for rapid, on-site screening of AFB1. Graphical abstract The alternative text for this image may have been generated using AI.
✓ 已验证
DOI
PubMed
高影响因子
CERAMICS INTERNATIONAL
·
2026
·
IF 5.6
Junling Yu,Jianmin Liu,Feng Jiang,Guo Feng,Hui Yu,Xiangping Jiang,Yun Yu
In order to obtain samples with high color purity, we first proposed a novel spectral-clipping approach. In this technique, the incorporation of ions with spectral regulation characteristics, through the energy level transition, the absorption of variegated peaks in the sample reflection spectrum and the selective emission of the desired color or specific band can be achieved. Taking Eu-doped Cr-ZrSiO 4 green ceramic pigment as an example, and its crystal structure, diffuse reflectance spectrum, and color characteristics were systematically investigated. First-principles band calculations were performed on (Eu,Cr)-ZrSiO 4 supercells to elucidate the effect of co-doping on the electronic structure and optical properties. Structural and spectral analyses demonstrate that Eu doping effectively eliminates stray colors, yielding a pure green color ( L* =76.26, a* = -7.9, b* =12.17) and significantly enhancing the near-infrared reflectance, which reaches 90.36% in the 700-2500 nm wavelength range. The spectral-clipping approach shows promising potential for applications in pigments and phosphor materials.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2022
·
IF 6.371
Huicai Xie,Quanyi Liu,Xiaohua Luo,Shengcan Ma,Xinqiang Gao,Zhenxing Li,Zhaojun Mo,Jun Shen
For more practical applications, research on magnetic refrigeration has been gradually focused on developing refrigerants with large magnetocaloric effect (MCE) under low magnetic fields (≤2 T). EuTiO 3 exhibits considerable low-field MCE near ordering temperature, meanwhile the magnetic switch from antiferromagnetic to ferromagnetic (AFM-FM) in it provides the feasibility of improving the magnetocaloric performance. In this study, a series of Eu(Ti,Nb,M)O 3 (M=Cu or Zn) compounds were synthesized, and the crystal structure, magnetic properties together with cryogenic MCEs were investigated in detail. The co-substitution contributes to an FM coupling domination in all the compounds. Besides, significantly enhanced and giant low-field MCEs were detected in these compounds. Under the field change of 1 T, all the samples possess remarkable magnetic entropy change (>15 J·kg -1 ·K -1 ) around 5 K without hysteresis. The corresponding refrigerating capacities are calculated to be 68.0, 72.6, 76.0, and 69.6 J·kg -1 , respectively, exhibiting an increase of 149–178% than EuTiO 3 . The outstanding magnetocaloric performances make the Eu(Ti,Nb,M)O 3 (M=Cu or Zn) compounds competitive candidates for cryogenic magnetic refrigeration.
研究领域:
材料科学
·
凝聚态物理
·
功能材料
·
低温工程
·
磁学
✓ 已验证
DOI
高影响因子
CARBOHYDRATE POLYMERS
·
2026
·
IF 12.5
Yuting Zhang,Xinmiao Qi,Binzhen Liu,Liangkun Li,Xin Guo
Orange peel is an abundant polysaccharide-rich agro-industrial residue that is often discarded, causing resource loss and environmental burden. Here, we valorize orange peel-derived pectin into a mechanically robust and photostable fluorescent hydrogel (EuCPH) by embedding uniformly dispersed Europium-based metal-organic framework decorated cellulose nanofibril (Eu-MOF@CNF). The resulting red-emissive EuCPH enables simultaneous levofloxacin (LEV) capture and fluorescence sensing. EuCPH-4 exhibits an ultrahigh Langmuir capacity of 1388.6 mg g −1 and a low limit of detection (LOD) of 0.12 μg L −1 . Adsorption follows the Langmuir isotherm and pseudo-second-order kinetics, consistent with chemisorption-dominated uptake. EuCPH-4 retains 83.8% of its capacity after five cycles with negligible Eu leaching (<8 ppb) and sustains stable performance over ten fixed-bed regeneration cycles. With low-cost orange peel-derived pectin and wood-derived CNF, EuCPH can be produced at ~0.02 CNY g −1 , providing a scalable and economically viable hydrogel platform for antibiotic monitoring and remediation.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
MICROCHEMICAL JOURNAL
·
2026
·
IF 5.1
Lanlan Wei,Yilan Zhao,Yaoye Chen,Ke Huang,Xiaoli Xiong,Qing Yang
A dual-emission CDs@Eu-DPA composite was rapidly synthesized via dielectric barrier discharge microplasma technology using carbon dots (CDs), 2,6-dipicolinic acid (DPA), and Eu 3+ as precursors. CDs@Eu-DPA was subsequently applied for ratiometric fluorescence and visual analysis of oxytetracycline (OTC) in food samples. When OTC was introduced, the blue fluorescence of CDs was quenched via the inner filter effect, while OTC coordinated with Eu 3+ in Eu-DPA to form a complex, leading to the enhancement of the red fluorescence of Eu 3+ at 615 nm through antenna effect. Additionally, principal component analysis was employed to distinguish four different antibiotics, including OTC, chlortetracycline, tetracycline, and doxycycline. Under optimized conditions, the ratiometric fluorescence analysis and smartphone-assisted RGB analysis exhibited linear detection ranges of 0.05–210.0 μM and 0.3–90.0 μM for OTC, respectively, with limits of detection of 0.02 μM and 0.08 μM, respectively. The satisfactory recoveries in food samples were ultimately achieved through the dual-mode sensing method.
✓ 已验证
产品关联
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.
✓ 已验证
产品关联
DOI
高影响因子
LUMINESCENCE
·
2022
·Vol. 37
·期 12
·2050-2058
·
IF 2.613
Xin Hou,Xiaohui Wen,Juan He,Xiandeng Hou
Lanthanide metal–organic frameworks Eu(BTB) MOFs was synthesized in low-temperature plasma produced by dielectric barrier discharge (DBD). This DBD synthesis possesses the characteristics of rapid reaction (within 20 min), mild condition (low temperature and atmospheric pressure) and simple operation compared with many traditional synthesis methods. The prepared Eu(BTB) MOF material exhibits typical red light emitting of europium (Eu 3+ ) at 617 nm, which can selectively and sensitively be quenched in the presence of trace iron(III) ion (Fe 3+ ). A simple, fast and sensitive fluorescence sensing strategy of Fe 3+ was thus constructed, with a limit of detection (LOD) of 0.5 μM. Compared with reported fluorescence probes, Eu(BTB) MOFs have also demonstrated the advantages of low cost, easy and fast preparation, great stability, and excellent optical properties, thus making them a promising fluorescence candidate for trace Fe 3+ sensing for the potential application in biological systems in the future.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Crystals
·
2022
·Vol. 12
·期 11
·1608
·
IF 2.67
Zijun Ye,Yu Jiang,Minmin Mao,Zhiyu Xiu,Mengjiao Chi,Guofa Wu,Bing Liu,Dawei Wang,Bin Yang,Kaixin Song
In this work, Y2.95R0.05MgAl3SiO12(R = Yb, Y, Dy, Eu, Sm) microwave single-phase dielectric ceramics were successfully prepared via a conventional ceramic sintering technology by doping a series of rare earth elements (Yb, Y, Dy, Eu, Sm) with different ionic radii for the first time. The effects of A-sites occupied by rare earth elements on the microwave dielectric properties of Y2.95R0.05MgAl3SiO12were studied using crystal structure refinement, a scanning electron microscope (SEM), bond valence theory, P-V-L theory, and infrared reflection spectroscopy. It was found that the ionicity of the Y-O bond, the lattice energy, the bond energy, and the bond valance of the Al(Tet)-O bond had important effects on the microwave dielectric properties. Particularly, the optimum microwave dielectric properties,εr= 9.68,Q×f= 68,866 GHz, andτf= −35.8 ppm/°C, were obtained for Y2.95Dy0.05MgAl3SiO12when sintered at 1575 °C for 6 h, displaying its potential for 5G communication.Keywords:garnet;microwave dielectric properties;P–V–L theory;infrared reflection spectroscopy
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2022
·
IF 5.532
Wanyin Ge,Honglei Yin,Chenhui Lu,Xinmeng Zhang,Panpan Song,Mingsheng Ma,Zhifu Liu,Ye Tian
The core issue of light emitting diodes (LEDs) for actual application is the thermal stability of phosphors. Silicon nitride (Si 3 N 4 ) is generally recognized as especially important structural material due to its excellent mechanical properties at extreme high temperature. In this work, Si 3 N 4 : Eu was demonstrated to be an excellent luminescence functional material for LEDs. The discarded corner-waster silicon raw material was utilized to act as the precursor. The Si 3 N 4 :Eu phosphor was synthesized by a facile nitriding process at elevated temperature. The pure α-Si 3 N 4 :Eu nanorods were successfully obtained by adjusting the doping concentration of Eu. It is coexistence with mixed-valence (divalent and trivalent) for Eu in α-Si 3 N 4 according to X-ray photoelectron spectroscopy. The synthesized α-Si 3 N 4 :Eu nanorods showed bright yellow under the excitation of 365 nm (UV) and white luminescence by 460 nm chip (Blue). The Si 3 N 4 :Eu nanorods possess excellent thermal stability, maintains nearly 70% of the origin intensity even at temperatures over 300 °C. The Si 3 N 4 :Eu nanorods demonstrated comparable performance to commercial YAG:Ce 3+ (YAG). Moreover, the long-term thermal stability of Si 3 N 4 :Eu nanorods is superior to commercial YAG, revealing the enhanced service performance. This work not only presents a facile Si 3 N 4 :Eu nanorods green synthesis route from waste utilization, but also offers an enhanced service performance for the high temperature LEDs application.
✓ 已验证
产品关联
DOI
高影响因子
Journal of Environmental Chemical Engineering
·
2022
·
IF 7.968
Xiaoyu Yang,Boming Tang,Xuejuan Cao
Continuous photocatalysis is achieved by using light-storing assisted photocatalytic composites, but little is known about the interactions between photocatalysts and long afterglow materials. g-C 3 N 4 /Sr 2 MgSi 2 O 7 :(Eu,Dy) with a sustained reaction activity was prepared by pyrolysis polymerization, and its optical-photocatalysis behaviors were studied. It was found that the light absorption ability and NO removal effect were improved, but the luminescence-afterglow performance became worse. The interface model of g-C 3 N 4 /Sr 2 MgSi 2 O 7 :(Eu,Dy) was constructed for the first time. On the basis of experimental analyses, its electronic structure and carrier transfer paths were studied by First-principles calculations, and reasons behind the changes in macro performance were revealed. The results showed that Eu 4 f electrons are difficult to return to the Eu 5d orbits after being captured by C 2p orbits, leading to the reduction of light energy radiation; the built-in electric field and energy band offsets between g-C 3 N 4 and Sr 2 MgSi 2 O 7 :(Eu,Dy) promote the transfer of photoinduced carriers, which follows a traditional type-II mechanism, resulting in enhanced photocatalytic activity and decreased luminescence-afterglow performance. This paper reveals the relationship between optical-photocatalysis behaviors and the electronic structure of g-C 3 N 4 /Sr 2 MgSi 2 O 7 :(Eu,Dy). It provides a reference for designing and optimizing light-storing assisted photocatalytic composites.
✓ 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）