CERAMICS INTERNATIONAL
·
2025
·Vol. 51
·期 28
·59375-59382
·
IF 5.6
Chunxiao Lu,Pengyu Li,Ye Zhao,Qiwei Zhang,Shuai Li,Yong Li,Zhongzhi Wang,Liwen Zhang,Xihong Hao
Ferroelectric transparent ceramics serve as pivotal functional materials with inherently tunable polarization. However, addressing the intrinsic trade-off between high optical transparency and robust ferroelectricity remains critical for breakthroughs in multifunctional optoelectronic coupling applications. Herein, designing relaxor ferroelectric transparent ceramics via rare-earth doping is an effective strategy, which refines grain size, introduces polar nanoregions and induces high-symmetry phase structure. It synergistically achieves high transmittance and polarization, laying the foundation for one-structure multi-photoelectric-effects coupled applications. Accordingly, superior energy storage density ( W tot = 10.5 J/cm 3 , W rec = 7.0 J/cm 3 ) and optical transmittance (78 % at 780 nm) are simultaneously realized in Eu 3+ /La 3+ co-doped K 0.5 Na 0.5 NbO 3 (KNN) ceramics, along with excellent photochromic-induced transmittance and luminescence reversible modulation (ΔAbs = 19.35 %, ΔR t = 92.5 %), outperforming previously reported KNN-based multifunctional ceramics in terms of comprehensive performance. This study proposes a viable approach to pave the way for constructing smart materials that can modulate photoelectric performance while extending their functionality.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MOLECULAR STRUCTURE
·
2025
·
IF 4.7
Xiong Wang,Lingwei Zeng,Mengjia Chen,Zhouxi Li,Hu Zhou,Jianxian Zeng,Guoqing Liu,Tao Pang,Xiangcheng Wang,Yi Luo,Jianfeng Tang,Daqin Chen
Impurity doping is considered as a promising route to endow many functional materials with eminent properties, which may extend their applications in many research fields. As for the optical materials, great endeavors have been devoted to the fluorides over the past years, lanthanide orthovanadates receive less attention and focus. Herein, t-LaVO 4 :Ln 3+ (Ln = Eu, Dy, Sm, Tb) nanorods have been modified by the ZrOCl 2 addition, which are prepared through a hydrothermal synthesis technology. XRD, ICP, TEM, FT-IR and luminescence spectroscopy are employed to characterize the product. The morphology and luminescence performance of t-LaVO 4 :Ln 3+ nanorods could be modulated by deliberately control the ZrOCl 2 content. The average length and width of the nanorods decreases along with the increase of the ZrOCl 2 content. With regulating the content to 4 mol%, luminescence intensity are enhanced for several times and the decay lifetimes are prolonged to a certain extent. The growth mechanism and luminescence enhancement are discussed in detail. This report facilitates a novel approach for luminescence enhancement and widens the horizon for growth mechanism of LaVO 4 -based nanocrystals induced by impurity doping.
✓ 已验证
DOI
高影响因子
MICROCHEMICAL JOURNAL
·
2021
·
IF 4.821
Yuanyuan Duan,Yongli Yu,Limei Wang,Shuang Zhao
In this work, a facile method for the preparation of dual-emission lanthanide nanoparticles (NPs) was developed. Tb 3+ -doped LaF 3 NPs coated with 2,6-pyridinedicarboxylic acid (DPA) and Eu 3+ , namely LaF 3 :Tb@DPA-Eu NPs, could produce characteristic emissions of Tb 3+ and Eu 3+ under 272 nm excitation, which originated from the absorption of DPA. The LaF 3 :Tb@DPA-Eu NPs with tunable emission peaks and color could be synthesized by changing the concentration of Eu 3+ . Additionally, the obtained NPs were comprehensively characterized by various analytical methods. Transmission electron microscopy (TEM) images showed that the average size of the NPs was ~15 nm. Moreover, X-ray diffraction (XRD) analysis revealed that the products were single-phase LaF 3 , while the doped Tb 3+ entered the LaF 3 lattice to occupy the La 3+ sites. Owing to their excellent water solubility and good optical properties , the LaF 3 :Tb@DPA-Eu NPs were used as a fluorescence probe for the detection of marbofloxacin (MAR) based on the fluorescence quench. Notably, an effective ratiometric fluorescence method was established. The approach exhibited good sensitivity and selectivity with a linear range of 0.10 ~ 10.0 μM and detection limit of 85 nM. It was successfully employed for the determination of MAR in milk samples with recoveries of 98.1%–106%. Thus, the fluorescence method based on the LaF 3 :Tb@DPA-Eu NPs developed herein provides a convenient and fast platform for the detection of MAR.
研究领域:
分析化学
·
材料科学
✓ 已验证
DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2026
·
IF 2.6
Biyang Quan,Peng Guan,Fangfang Chen,Longfei Ye,Zhichen Yue,Ruize Ma,Huifeng Zeng
Based on thenoyltrifluoroacetone (TTA) as the anionic ligand, three europium(III) complexes Eu(TTA)3(L1)2 (E1), Eu(TTA)3(L2)2 (E2) and Eu(TTA)3(L3)2 (E3) were successfully synthesized by using different phosphine oxide auxiliary ligands: trioctylphosphin oxide(L1), triphenylphosphine oxide (L2), and trimethylphosphine oxide (L3). The structures and optical properties of E1, E2, and E3 were systematically characterized by elemental analysis, infrared spectroscopy, single-crystal Xray diffraction and fluorescence spectroscopy. It was found that E1 and E2 exhibited superior luminescence properties in aggregated state within an ethanol/water binary mixture, attributed to the self-assembly behavior induced by the long alkyl chain of L1 and the greater steric bulk of L2. Simultaneously, as compared with the classical complex Eu(TTA)3phen (E4, phen=1,10-phenanthroline), scanning electron microscopy confirmed the characteristic structures of the Eu complexes in the ethanol-water mixed system. Subsequently, the ethanol-water mixed system and 1% doped PMMA (polymethyl methacrylate) films were prepared using the complexes, followed by UV aging tests. The results show that compared to E3 and E4, the uniquely structured ligands E1 and E2 not only enhanced the luminescence performance of EuIII complexes in the aggregated state but also significantly improved the photostability of EuIII complex materials. This research provides a potential strategy for designing and preparing rareearth complex materials that combine excellent luminescence properties with high photostability.
✓ 已验证
DOI
高影响因子
ACTA MATERIALIA
·
2022
·
IF 9.209
Qian Liu,Ke-Feng Liu,Qi-Qi Wang,Xiao-Cun Liu,Fang Yu,Jian Liu,Yuan-Yuan Su,Sheng-Qing Xia
In this report, for the first time TiNiSi-type Zintl phases with the nominal formulae of ALiSb (A = Ca, Sr, Eu, Yb) were systematically investigated on their thermoelectric properties. The results indicated that ALiSb Zintl phases possessed intrinsically low lattice thermal conductivity despite the simple structure. In combination of thorough crystallographic and theoretical investigation, rattling-like scattering behavior originating from the Li atoms was suggested. As a result, the pristine ALiSb materials featured decent zT values of 0.4–0.7 at 823 K. With the electrical and thermal transport properties further optimized by configuring the solid solutions such as Sr 0.8 Eu 0.2 LiSb, the material approached a maximum zT up to 1.2 at the same temperature. These breakthroughs are distinct from the previous knowledge that low thermal conductivity in Zintl phases is usually realized through complex crystal structures, and for compounds with simple structures such as the TiNiSi type it is common to have poor thermoelectric performance. Owing to such a rattling-like scattering behavior, now light-element containing Zintl phases can be a promising resource for thermoelectric considerations as well. The mechanism is surely interesting and worth of in-depth investigation.
研究领域:
材料科学
·
热电材料
·
固体化学
·
晶体学
·
能源材料
✓ 已验证
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2023
·
IF 6.2
Z.C. Yao,W.B. Dai,J. Luo,K. Nie,M. Xu
Several series of novel broad band white light emitting Bi/Tb/Eu tridoped in multiple lattice sites of single-phase Sr 3 YB 3 O 9 (SYBO) borate phosphors, which covered almost all visible range through mixing the separate blue, green and red emissions from dopants of Bi, Tb and Eu, respectively, were successfully obtained by using the facile and conventional solid-state reaction method under air condition. Rietveld refinements based on XRD data together with the combination match of charge and ion radius for dopants of Bi, Tb, Eu and lattice cations of Sr, Y and B show that Bi is more inclined to replace the Sr site while Tb/Eu are more likely to enter the Y site, respectively. Through spectrum analysis of photoluminescence excitation (PLE), PL and decay lifetime, the efficient energy transfer (ET) from the Bi to both Tb and Eu, and from Tb to Eu are all testified via the dipole-dipole interactions, indicating that the non-rare-earth activator Bi is acting both as the blue luminescence center and ET sensitizer, while the Tb contributes both as ET bridge and green luminescence center to better connect the Bi and Eu. The optimal tridoped white emission SYBO phosphor appears good thermal stability, which could continue to have its PL intensity above 75% at 150 °C as compared with the original room temperature PL intensity. Altogether, the single-component SYBO:Bi/Tb/Eu phosphor could be well served as potential white light phosphor for n -UV pumped w LED devices.
✓ 已验证
产品关联
DOI
高影响因子
ANALYTICAL SCIENCES
·
2023
·Vol. 39
·期 7
·1171-1178
·
IF 1.6
Wang Kun,Gao Xue,Chen Jianfeng,Yang Xiaoyan
Abstract In this study, a sensitive photoelectrochemical immunosensor with dye-enhanced anodic photocurrent response was proposed for sensitive detection of α-fetoprotein (AFP). Specifically, europium-doped TiO 2 (Eu-TiO 2 ) was used as the photoelectrochemical functional material and coated onto indium tin oxide (ITO) electrode. Doxorubicin (DOX) as an excellent fluorescent dye was encapsulated in the hydrophobically modified alginate (HMA). Then the dye-loaded HMA was modified onto the surface of Eu-TiO 2 to further sensitize the photocurrent response. The results showed that the photoelectrical signal was enhanced and stabilized due to the effect of sensitization of DOX on Eu-TiO 2 material. The constructed PEC sensor revealed a good linear response to AFP antigen ranging from 0.5 to 100 ng/mL with a detection limit of 0.41 pg/mL. The clinical patient’s serum test results obtained from the proposed PEC immunosensor were consistent with those obtained from the commercial electrochemilunescence assay. The proposed PEC sensing method could be a promising analytical tool for the detection of AFP in clinical analysis. Graphical abstract
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ENVIRONMENTAL POLLUTION
·
2019
·
IF 5.714
Zhi-Wei Huang,Zi-Jie Li,Li-Rong Zheng,Wang-Suo Wu,Zhi-Fang Chai,Wei-Qun Shi
One of the most important reasons for the controversy over the development of nuclear energy is the proper disposal of spent fuel . Separation of actinide and lanthanide ions is an important part of safe long-term storage of radioactive waste . Herein, a three-dimensional (3D) graphene-based macrostructure (GOCS) was utilized to remove actinide thorium and lanthanide europium ions from aqueous solutions. The adsorption of Eu(III) and Th(IV) on the GOCS was evaluated as a function of adsorption time, solution pH, initial ion concentrations , and ionic strength. The experimentally determined maximum adsorption capacities of this GOCS for Eu(III) (pH 6.0) and Th(IV) (pH 3.0) are as high as 150 and 220 mg/g, respectively. By using Fourier transformation infrared (FT-IR), X-ray photoelectron (XPS), and extended X-ray absorption fine structure (EXAFS) spectroscopy, we concluded that the Eu(III) and Th(IV) adsorption was predominantly attributed to the inner-sphere coordination with various oxygen- and nitrogen-containing functional groups on GOCS surfaces. Our selective adsorption results demonstrate that the actinide and lanthanide ions can be effectively separated from transition metal ions . This study provides new clues to the overall recycling of actinide and lanthanide ions in radioactive environmental pollution treatments.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
DYES AND PIGMENTS
·
2018
·
IF 3.767
Yuchi Zhang,Hanzhi Yao,Yan Xu,Zhiguo Xia
Engineering novel ratiometric temperature sensors with high temperature sensitivity is still of a great challenge in versatile temperature measurement fields. Herein, a self-calibrated optical luminescent thermometer based on Eu 3+ /Mn 2+ dual-activator was fabricated in the same nanocomposite system, which integrated the photoluminescence originated from the temperature-insensitive Eu-metal organic framework with weak coupling effect and the temperature-sensitive Zn 2 GeO 4 :Mn 2+ with strong coupling effect. Specifically, the as-prepared nanocomposites composed of lanthanide MOF Eu-BTC (BTC = 1,3,5-benzenetricarboxylic acid) and Zn 2 GeO 4 :Mn 2+ nanorods possessed Eu 3+ /Mn 2+ dual red/green emission, which displays excellent ratiometric temperature-sensing functions and also has high relative sensitivity ( S r ) of 4.1% ºC −1 when they are used as ratiometric luminescent thermometer in the physiological temperatures (25–45 °C). These results demonstrate that such a design strategy with synergistic weak/strong coupling luminescence is useful and the as-obtained Eu-MOF/Zn 2 GeO 4 :Mn 2+ nanocomposites can be potential for temperature sensor applications.
✓ 已验证
产品关联
DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2022
·Vol. 46
·期 28
·13693-13699
·
IF 3.925
Deyi Zhan,Abdul Saeed,Junyong He,Nanjing Zhao,Junfeng Wang,Weihong Xu,Jinhuai Liu
Recently, the development of fluorescent sensors to selectively and sensitively detect F− in drinking water has attracted great attention due to the serious harm caused by excessive F− to human bones, kidneys and even DNA. The advantage of a dual emission fluorescent sensor for its fluorescence color change in visualization is well known. In this work, we rationally designed a dual-emitting metal organic framework (MOF) (Eu/Sc)-EBTC, which showed ligand-based emission and Eu3+-based emission and exhibited high selectivity and sensitivity to F− (limit of detection = 16.4 ppb). The sensing mechanism was ascribed to the high affinity between F− and Eu3+ in (Eu/Sc)-EBTC, and was confirmed by PXRD patterns and X-ray photoelectron spectroscopy. Besides, a test strip was made successfully for the practical detection of F−. This study demonstrates the potential of a dual-emission fluorescent MOF sensor for practical applications.
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Xing Zhang,Xiurong Yang,Suhang Chen,Shuai Dong,Enzhou Liu,Hui Li,Haixia Ma,Kangzhen Xu
The rational regulation of electron transfer between Co-based catalysts and peroxymonosulfate (PMS) plays a key role in the photo-Fenton catalytic oxidation process. In this study, a novel Eu-doped ZnCo 2 O 4 composite was successfully prepared via a simple hydrothermal calcination method, and firstly used for PMS activation to degrade 1,1-diamino-2,2-dinitroethene (FOX-7). Among all samples, Eu 0.4 -ZnCo 2 O 4 exhibited remarkable PMS activation performance, which was about 5.67 times higher than that of undoped ZnCo 2 O 4 . The enhanced catalytic performance could be attributed to the generation of abundant oxygen vacancies (OVs), which greatly promoted the separation of carriers and accelerated the cycling of the Co 3+ /Co 2+ redox pairs. The corresponding Co 3+ /Co 2+ and oxygen defects/lattice oxygen (O Def /O Lat ) ratios regulated catalytic-activity relationship were successfully established by regression analysis. Radical quenching tests and electron paramagnetic resonance (EPR) revealed that non-radical pathway dominated the degradation process, and singlet oxygen ( 1 O 2 ) was the main active species. Importantly, theoretical calculations demonstrated that the synergy of doping and OVs could effectively improve adsorption energy and enhance electron transfer for promoting the activation of PMS. This study offers a deep insight into the catalytic reaction mechanism and provides a new strategy for developing heterogeneous photocatalysts in activating PMS for environmental remediation.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF SOLID STATE CHEMISTRY
·
2021
·
IF 3.498
Juncheng Zhou,Yuhao Chen,Shuang Xian,Yicun Liang,Guojia Huang,Lian Wang,Xiaozhan Yang
A novel europium metal-organic frameworks (Eu-MOFs), based on 1,3,5-benzotricarboxylic acid (H 3 BTC), 4,4′-azopyridine (4,4′-AZ) and N , N -dimethyllformamide (DMF), was synthesized by the solvothermal method . The crystal structure, thermal stability, morphology and luminescent properties are characterized by the X-ray diffraction (XRD), thermogravimetry (TG), scanning electron microscope (SEM), X-ray photoelectron spectroscopy (XPS) and optical spectroscopic techniques. The Eu-MOFs display a unique luminescence quenching effect to nitrobenzene (NB) and copper (Cu 2+ ) ions. The turn-off luminescence can be induced by 210 ppm NB or by 1000 μM Cu 2+ ions. Furthermore, the high sensitivities ( K SV = 0.039 ppm −1 for NB, and K SV =0.029 μM −1 for Cu 2+ ) and low detection limits (0.656 ppm for NB, and 1.395 μM for Cu 2+ ) are obtained. The sensing mechanisms are reasonably explained based on the electron and energy transfer. The experimental results show that the Eu-MOFs can be used as a potential sensing luminescence quenching probes for NB and Cu 2+ ions.
✓ 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）