MICROCHIMICA ACTA
·
2022
·Vol. 189
·期 9
·1-9
·
IF 6.408
Yang Fei,Wu Xiaohong,Li Chen,Chen Yuxiao,Liu Shu,Zhang Cuiling,Xian Yuezhong
A new coordination polymer (Ce-Fe-GMP) with excellent catalytic activity was prepared by a facile route, which was further applied to the detection of F − with high sensitivity and selectivity. The simple doping of Fe 3+ into the coordination network can easily modulate the mixing ratio of Ce 3+ and Ce 4+ in the presence of H 2 O 2 , which can extremely improve the catalytic ability of Ce-Fe-GMP. Based on the synergistic effect, the Ce-Fe-GMP with dual-active sites shows better peroxidase activity than that of Ce-GMP. In addition, we found that F − can inhibit the peroxidase activity of Ce-Fe-GMP because of the coordination structure fragmentation and the regulation of Ce 3+ /Ce 4+ ratio. Therefore, different concentrations of F − can be detected by the colorimetric reaction based on this mechanism. The absorption at 652 nm displays a good linear relationship versus the concentration of F − over the range 2.0 to 100.0 μM. Furthermore, F − in real mineral-mixed samples can be measured with satisfactory results. The colorimetric strategy based on the peroxidase activity of Ce-Fe-GMP is simple and low-cost, which shows the potential applications in the field of on-site environment measurement. Graphical abstract
研究领域:
材料科学
·
分析化学
·
环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2024
·
IF 2.7
Gang Li,Yayun Li,Chuanxi Lin,Hao Peng,Yunsheng Xue,Wenfeng Qin,Xin Zhao,Bin Zhou
2024 aluminum alloy has high strength, processing performance, and good damage tolerance performance, but it is prone to intergranular corrosion and pitting. Therefore, the development of corrosion protective coatings is essential for the aluminum alloy. In this paper, cerium ion (Ce 3+ ) was doped into chitosan-modified montmorillonite (Ce-CS-MMT) by ion exchange method, and the corrosion protective performance of Ce-CS-MMT epoxy coating (Ce-CS-MMT/EP) was investigated. The electrochemical analysis of aluminum alloy in cerium-containing solution showed the corrosion inhibition efficiency reached 95.52%. The result indicates the corrosion inhibition effect of cerium-containing solution was better than pure NaCl solution and MMT solution. The corrosion study of the coating illustrates that the protection rate of Ce-CS-MMT/EP reached 95.82%, which was higher than that 91.83% of Ce-MMT/EP. The result indicates the resistance of charge transfer was greater and the better shielding effect for electrolyte corrosion ions than MMT and Ce-MMT epoxy coatings, and the corrosion protective performance was excellent.
研究领域:
材料科学
·
腐蚀与防护
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2024
·
IF 5.1
Shuangyin Zhu,Shilin Jin,Jiamin Chen,Tao Pang,Lingwei Zeng,Lei Lei,Fengluan You,Daqin Chen
Greenlight is a sensitive band of the human eye, improving the luminous quality of the green part is crucial to the performance improvement of LED. However, the application prospects for Tb 3+ are greatly limited by its 4f-4f forbidden transition. In this study, we successfully synthesized Ba 2 MgY 2 (BO 3 ) 3 :Ce 3+ blue phosphor which effectively enhances its luminous properties through energy transfer. By introducing both Ce 3+ and Tb 3+ into the Ba 2 MgY 2 (BO 3 ) 3 matrix, an energy transfer efficiency of 50.6 % is achieved between these two ions, resulting in a remarkable 13.1-fold increase in Tb 3+ luminous intensity. The internal quantum efficiency (IQE) of the sample is measured at 63 %, while the external quantum efficiency (EQE) reaches 30 %. Furthermore, it exhibits good thermal stability and promising applications in temperature sensing due to the sensitivity and coordinated luminescence of Ce 3+ and Tb 3+ ions at different temperatures. Finally, when combined with a 365 nm chip, this sample produces a white LED (WLED) with a color rendering index (CRI) of 81.6 and a correlation color temperature (CCT) of 4330 K.
研究领域:
材料科学
·
光学工程
✓ 已验证
产品关联
DOI
高影响因子
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
·
2026
·
IF 4.8
Shengjie Jiang,Yong Lin He,Weiming Yang,Hongyu Guo,Fafu Yang
This paper reports the first fluorescent sensor that can simultaneously detect multiple rare earth metal ions (Y 3+ , Yb 3+ , Sc 3+ and Ce 3+ ) in a variety of rare earth metal ions. The Schiff base TPE-A was synthesized in 85% yield by the condensation reaction of formyltetrastyrene with 4-aminoantipyrine. Long wavelength fluorescence of TPE-A was observed at 500–650 nm in both MeOH and MeCN solutions. In methanol, it showed a highly selective response to Y 3+ with a fluorescence color change from red to yellow-green, while it exhibited fluorescence quenching for Yb 3+ . Additionally, it exhibited a selective sensing ability for Sc 3+ in MeCN solution with a fluorescence color change from red to yellow, and a fluorescence quenching effect for Ce 3+ . In addition, it can detect these four rare earth metal ions simultaneously by fluorescence changes with the assistance of EDTA-2Na. It can be used as a fluorescence sensor for MeOH (Y 3+ and Yb 3+ ) and MeCN (Sc 3+ and Ce 3+ ), respectively. The ICT effect of the TPE-A probe on Y 3+ was investigated using femtosecond transient absorption spectroscopy and quantum chemical calculations. The detection limits of Y 3+ , Yb 3+ , Sc 3+ and Ce 3+ were 1.6 × 10 −8 mol/L, 1.04 × 10 −7 mol/L, 8.35 × 10 −8 mol/L and 1.31 × 10 −8 mol/L, respectively, as deduced from Job's plots, spectral titrations, and ESI-MS. And the detection of measured water in MeCN was realized by TPE-A-Sc 3+ hybrid system. This implies an efficient and simple method for the simultaneous analysis of trace rare earth metal elements (Y 3+ , Yb 3+ , Sc 3+ and Ce 3+ ) in complex environments.
✓ 已验证
DOI
PubMed
高影响因子
PHYSICA B-CONDENSED MATTER
·
2026
·
IF 3.2
Peirong Wu,Kexin Zhang,Xinyi Zhang,Minyue Wan,Yiming Gu,Mubiao Xie,Ruijin Yu
The KSr 6 ScSi 4 O 16 :Ce 3+ phosphor exhibits a blue emission with a main peak at 407 nm. • It retains 95.53% of the room-temperature luminescence at 420 K. • It has a high color purity of 97.3% and remarkable chromaticity coordinate stability. • The w-LED exhibits a high CRI value of 92 and a good CCT of 5148 K. In the pursuit of next-generation solid-state lighting that prioritizes high color rendering indices and tunable correlated color temperatures, developing thermally robust blue-emitting phosphors excitable by near-ultraviolet radiation is a key challenge. In this work, the high luminous thermal stability blue light emission activated by Ce 3+ in the KSr6ScSi4O16 matrix is reported for the first time. X-ray diffraction confirms a pure-phase solid. Ce 3+ ions preferentially occupy the lattice sites of Sr 2+ and the shared [K + /Sr 2+ ] positions within the KSr 6 ScSi 4 O 16 structure. Under 350 nm n-UV excitation, it exhibits intense broad-band blue emission peaking at 407 nm, attributed to spin-orbit-split 5d-4 f electronic transitions. Detailed investigation into the concentration quenching kinetics reveals an optimal doping concentration of 5 mol%, with the quenching mechanism governed principally by nearest-neighbor ion interactions. It retains 95.53% of its intensity at 420 K, with a high activation energy of 0.28 eV. Color purity reaches 97.3% with stable chromaticity coordinates. The bright WLEDs fabricated on a 370 nm chip demonstrate excellent white-light performance, with a correlated color temperature of 5148 K and a high color rendering index of 92, underscoring the practical viability of this newly developed phosphor.
✓ 已验证
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2026
·
IF 6.7
Zhihua Leng,Xiaohua Zhao,Risheng Wang,Lingling Zhang,Hao Chen,Fang Song,Zuobin Tang,Dan Zhang
Simultaneously boosting comprehensive photoluminescence (PL) performance remains a highly important research target for advanced optical applications of rare-earth activated phosphors. However, relevant effective strategies are rarely reported, because the PL performance is predominantly controlled by electron-phonon coupling (EPC) and dynamic local structural fluctuations around activator sites. Herein, we propose a heavy-element substitution strategy to simultaneously optimize the comprehensive PL performance through stepwise Y 3+ replacement by Lu 3+ in Mg 2 (Y 1- x Lu x ) 2.5 Al 1.5 Si 2 O 12 :0.06Ce 3+ ( x = 0, 1/3, 2/3, 1; x -Lu:Ce 3+ ) garnet phosphors. This strategy enables precise tracking of the gradual EPC evolution during stepwise local structural modulation. Systematic structural and optical characterizations combined with DFT-based investigations verify that stepwise Lu 3+ -substitution dramatically improves the structural rigidity of the host. The reinforced structural rigidity further effectively suppresses the EPC effect and phonon-assisted nonradiative relaxation. Consequently, simultaneous and gradual enhancements are achieved in spectral intensity (3.05-fold), quantum efficiency (53.3% → 80.5%), thermal stability (intensity at 423 K: 32.0% → 82.4%), and chromaticity stability (chromaticity shift at 423 K: 2.862 × 10 −2 → 0.305 × 10 −2 ). White light-emitting diode fabricated using the optimized 1-Lu:Ce 3+ phosphor in place of commercial Y 3 Al 5 O 12 :Ce 3+ yellow phosphor delivers exceptional warm white luminescence. Moreover, the x -Lu:Ce 3+ ( x = 0, 1) phosphors with remarkably distinct temperature-dependent PL behaviors can be extend their application to temperature-sensitive anti-counterfeiting and information encryption systems.
✓ 已验证
产品关联
DOI
高影响因子
Small
·
2025
·
IF 12.1
Shuhan Chen,Jichang Sun,Chun Chen,Pengyu Meng,Liansheng Li,Qinghua Liang
Aqueous zinc-ion hybrid capacitors (ZIHCs) are emerging as promising energy storage devices owing to several desirable attributes including good safety, high power density, and good stability. However, the limited energy density mainly caused by the low specific capacity of porous carbon cathodes hinders the practical application of ZIHCs. A Ce 3+/4+ redox couple-promoted aqueous ZIHC (Ce-ZIHC) is designed with the addition of Ce 3+/4+ electrolyte additives. The Ce 3+/4+ redox couple is shown to markedly increase the specific capacity of the porous carbon cathode energy and enhance the stability of Zn 2+ stripping/plating at the Zn metal anode. Notably, the as-constructed Ce-ZIHC performs more than twice the energy density of the ZIHC with the commercial activated carbon cathode. Furthermore, the Ce-ZIHC shows a low self-discharge rate and can work stably for more than 60 000 cycles at 5.0 A g −1 . This work highlights the great potential of Ce 3+/4+ redox couple in improving the overall performance of ZIHCs toward practical application.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
RSC Advances
·
2017
·Vol. 7
·期 76
·48238-48244
·
IF 3.108
Jiangyun Dai,Chao Yang,Hong Zhang,Hua Zhang,Guoying Feng,Shouhuan Zhou
The successful synthesis of rare earth doped nano/microcrystals with the desired morphology, uniform monodispersity, and intense infrared emission is of fundamental significance, and would facilitate their application in infrared emission-related miniaturization and integration in optoelectronics. However, simultaneously controlling the morphology and enhancing the infrared emission through simple and effective methods has not been well explored. In this study, via Ca2+ doping with an optimized concentration of 25 mol% in the hydrothermal solution, irregular NaGdF4:Yb/Er submicrocrystals converted into highly uniform submicrorods. Meanwhile, an obvious enhancement of visible upconversion (UC) and near-infrared (NIR) downconversion (DC) emission were obtained, probably due to the improved morphology and lowering the local crystal field symmetry around the rare earth ions induced by Ca2+ doping. Furthermore, Ce3+ ions with an optimized concentration of 2 mol% were codoped to intentionally tailor the branching ratio through efficient energy transfer from Er3+ to Ce3+. As a result, the ∼1530 nm emission intensity of the NaGdF4: 25Ca/2Ce/20Yb/2Er submicrorods increased by about 6.4 times in comparison with the NaGdF4:20Yb/2Er counterpart.
研究领域:
材料科学
·
光学工程
·
纳米技术
·
稀土化学
·
光电子学
✓ 已验证
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2023
·Vol. 49
·期 24
·40846-40852
·
IF 5.2
Xinrong Chen,Shaoda Yuan,Yanghan Guo,Bingguo Liu,Shiqing Pang,Le Zhang,Baoli Du,Carsten Dam-Hansen,Jian Xu,Ole B. Jensen
Eu 2+ doped-CaAlSiN 3 possesses broad red emission, enabling a phosphor-converted lighting device to achieve a high color rendering index (CRI) and proper color temperature. However, CaAlSiN 3 :Eu 2+ exhibits relatively slow decay (∼1 μs) and intense re-absorption of luminescence from green/yellow emitters, thereby causing optical saturation and reducing the luminous efficacy. Here, we fabricated a novel phosphor converter comprising Lu 3 Al 5 O 12 :Ce 3+ and Y 1.3 Gd 1.6 Al 5 O 12 :Ce 3+ powders. The typical sample, when excited by a blue laser , exhibited a high luminous efficacy of 231 lm/W and a high saturation threshold of 22.2 W/mm 2 , resulting in a high luminous exitance of 695 lm/mm 2 . Importantly, the phosphor converter produced a broad emission band that included sufficient cyan and red components, resulting in a full width at half maximum (FWHM) of 134 nm and a high CRI of 81. With this excellent balance between CRI and luminous efficacy, the reported phosphor converter can significantly expand the range of laser lighting applications.
研究领域:
光学材料
·
固态照明
·
光子学
·
发光
·
材料科学
✓ 已验证
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2026
·
IF 9.6
Haoran Yin,Linyu Chen,Linlin Huang,Tayirjan Taylor Isimjan,Dandan Cai,Xiulin Yang
Ce 3+ /Ce 4+ redox drives stable β-NiOOH formation in NiCe NDC. • Ce 4f reservoirs tune Ni d-band center, lowering OER barrier. • NiCe NDC/CP exhibits good OER activity and long-term stability. • 20 MW electrolyzer assessment predicts H₂ cost ∼USD 5.40 kg −1 . The rational regulation of electrochemical reconstruction is a promising route to high-performance oxygen evolution reaction (OER) electrocatalysts, yet the underlying electronic mechanisms and their technological relevance remain elusive. Herein, a Ce-doped Ni-based metal organic framework (NiCe NDC) precatalyst is fabricated via a facile one-step solvothermal method. The reversible Ce 3+ /Ce 4+ redox pair acts as a dynamic electron-buffering center, and the strong Ni 3d–O 2p–Ce 4f orbital coupling induces controllable reconstruction into stable β-NiOOH, while inhibiting the over-oxidation and structural deterioration of active phases. In situ Raman spectroscopy and X-ray photoelectron spectroscopy verify the optimized reconstruction kinetics and reversible Ce valence evolution, while density functional theory (DFT) calculations confirm that near-Fermi-level Ce 4f states serve as electron reservoirs to modulate the Ni d-band center, enrich electronic density at the Fermi level, and reduce the free-energy barrier of the rate-determining *O to *OOH step. Optimized NiCe NDC delivers superior alkaline OER performance with a low overpotential of 194 mV at 10 mA cm −2 , a small Tafel slope of 61.8 mV dec −1 , and long-term stability over 100 h at 100 mA cm −2 . Coupled with a Pt/C cathode, the assembled overall water-splitting electrolyzer achieves current densities of 10–1000 mA cm −1 under low cell voltages of 1.42–1.90 V. A techno-economic assessment (TEA) of a 20 MW alkaline electrolyzer estimates a levelized cost of hydrogen (LCOH) of ∼USD 5.40 kg −1 H₂. This work reveals the electronic mechanism of rare-earth-regulated reconstruction and provides a feasible strategy for designing advanced OER catalysts toward industrial green hydrogen production. A rare-earth doped Ni-based MOF pre-catalyst is rationally developed for efficient alkaline OER, where Ce dopant with reversible Ce 3+ /Ce 4+ redox property acts as a dynamic electron pump to regulate the electrochemical reconstruction process and stabilize the derived active NiCeOOH phase. Enabled by this electronic modulation strategy, the resulting catalyst exhibits outstanding OER performance with an ultralow overpotential of 194 mV at 10 mA cm −2 , coupled with robust long-term durability over 100 h at a large current density of 100 mA cm −2 . Download: Download high-res image (109KB) Download: Download full-size image
✓ 已验证
DOI
高影响因子
JOURNAL OF LUMINESCENCE
·
2025
·
IF 3.6
Yingchun Ge,Tao Wu,Langping Dong,Zhiyu Qin,Jianghua Wu,Guangxiang Jiang,Guoying Zhao,Shuai Yang,Jingshan Hou,Yongzheng Fang
The development of full-spectrum white LEDs is significantly hindered by the “cyan gap” in the 470-510 nm spectral region. Addressing this gap with moderate -quality cyan-emitting phosphors, efficiently excited by violet LED chips, is crucial for achieving high color rendering index (Ra > 90) illumination. In this study, a novel and moderate efficient garnet-structured cyan-emitting phosphor Ca 2 LuZr 2 Al 1.5 Ga 1.5 O 12 :Ce 3+ (CLZAGO:Ce 3+ ) was effectively prepared via a high-temperature solid-state reaction route. When excited at 410 nm, the optimized CLZAGO:0.04Ce 3+ sample displays a robust cyan emission peaking at 484 nm, accompanied by a broad emission band spanning 420-650 nm and a full width at half-maximum (FWHM) of 90 nm, which efficiently fills the cyan gap commonly observed in conventional White light-emitting diodes (WLEDs). The phosphor exhibits available thermal stability, preserving 53% of its room-temperature emission intensity at 423 K, and achieves a moderate external quantum efficiency (EQE) of 45.43%. Finally, when CLZAGO:Ce 3+ was combined with commercial blue-emitting Sr 5 (PO 4 ) 3 Cl:Eu 2+ (SPOC:Eu 2+ ), green-emitting (Ba, Sr) 2 SiO 4 :Eu 2+ (BSSO:Eu 2+ ), and red-emitting CaAlSiN 3 :Eu 2+ (CASN:Eu 2+ ) phosphors and integrated into a 410 nm violet LED chip, a full-spectrum WLED with an enhanced Ra of 95 was achieved. These findings underscore the critical role of CLZAGO:Ce 3+ as a promising cyan-emitting component for next-generation high color-rendering full-spectrum WLEDs.
研究领域:
材料科学
·
光电子学
·
固态照明
·
磷光体化学
·
LED技术
✓ 已验证
产品关联
DOI
高影响因子
MATERIALS LETTERS
·
2025
·
IF 2.7
Junfei Zhou,Jingtao Zhao,Gongxun Bai,Shilong Zhao,Shiqing Xu,Lihui Huang
Ce 3+ doped lithium germanate glass ceramics containing LiF nanocrystals were fabricated through melt-quenching technique and subsequent heat-treatment process. As demonstrated by XRD results, the grain size of the precipitated LiF nanocrystals falls within the range of 15.7 to 21.1 nm. Upon 350 nm light excitation, the emission spectra of both the glass and GC samples display a broadband spectrum, with the peak at 410 nm. The luminescence intensities of the GC samples are markedly higher than the as-prepared glass. Moreover, the luminescence intensity of the GC samples gradually augments with the elevation of heat-treatment temperature and the extension of treatment time. The fluorescence lifetimes of the GC samples range from 17.56 ns to 21.27 ns. The results are instructive for the research and development of the germanate glass ceramics containing 6 Li for thermal neutron detection.
研究领域:
材料科学
·
核探测
·
发光材料
·
玻璃陶瓷
·
辐射探测
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）