MATERIALS RESEARCH BULLETIN
·
2016
·
IF 2.435
Hai Wu,Youjin Zhang,Maozhong Zhou,Chengpeng Yao,Xianjin Ge
Large single crystals of gadolinium hydroxide [Gd(OH) 3 ] in the length of several millimeters were successfully prepared by using solid KOH assisted hydrothermal method. Gd(OH) 3 samples were characterized by X-ray diffraction (XRD), 4-circle single-crystal diffraction, Fourier transform infrared (FTIR) spectroscopy and X-ray photoelectron spectroscopy (XPS). FESEM image shows hexagonal prism morphology for the Gd(OH) 3 large crystals. The possible growth mechanism of Gd(OH) 3 large single crystals was proposed. The photoluminescence and magnetic properties of Gd(OH) 3 species were investigated.
研究领域:
材料科学
·
光学
·
磁学
✓ 已验证
DOI
高影响因子
ADVANCED MATERIALS
·
2025
·
IF 26.8
Shuhong Yi,Chenlong Gao,Qingfeng Fu,Shiru Wu,Jian-Fang Wu,Yan Duan,Menghao Yang,Jilei Liu
Solid-state potassium-ion batteries are promising options for large-scale energy storage due to their high safety and abundance of potassium resources. However, solid-state potassium-ion batteries are still in their infancy and the reported electrolyte materials are very limited, making the exploration of solid electrolytes with high ionic conductivity and physical/electrochemical stability a major challenge. Here novel triclinic K 3 LnSi 3 O 9 (Ln = Y and Gd) potassium-ion solid electrolyte is reported with low activation energy and high stability. A rational vacancy design strategy is adopted to synthesize K 3−x GdP x Si 3−x O 9 and the result of DFT calculation shows that the diffusion pathways of potassium ions on the ac plane exhibit a fish scale-like network structure. Specifically, the K 2.8 GdP 0.2 Si 2.8 O 9 delivers a high ionic conductivity of 2.9 × 10 −5 S cm −1 at 25 °C, accompanied by a stable potassium stripping/plating (a long-life cycle over 2000 h). As a result, the assembled quasi-solid-state KC/K 2.8 GdP 0.2 Si 2.8 O 9 /PB cell achieves a remarkable cycling performance at a high current density of 1 C (500 cycles, 95.9% capacity retention). These results would no doubt boost research for high-safety and high-energy-density solid-state potassium-ion batteries.
研究领域:
材料科学
·
电化学
·
能源存储
·
固体离子学
·
无机非金属材料
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2019
·
IF 4.175
Qinghong Meng,Ji-Guang Li,Qi Zhu,Xiaodong Li,Xudong Sun
A series of phase-pure [(Gd 0.6 Lu 0.4 ) 1- y Ce y ] 3 [Al 1- z (Mg/Si) z ] 5 O 12 ( y = 0–0.012, z = 0–0.15) garnet phosphors were synthesized via gel-combustion, and the effects of Mg 2+ /Si 4+ substitution on characteristics of the garnet host and Ce 3+ luminescence were investigated in detail. The maximum amount of equimolar Mg 2+ /Si 4+ dopants that can be incorporated into the garnet lattice and the optimal Ce 3+ content for luminescence were determined to be around z = 0.15 and y = 0.010, respectively. Mg 2+ /Si 4+ codoping was analyzed to narrow bandgap of the host, non-uniformly compress the [CeO 8 ] dodecahedron , enlarge the [Al-O] polyhedrons and meanwhile alter bond angles. Increasing Mg 2+ /Si 4+ content was found to lower the intensity, fluorescence lifetime and thermal stability of Ce 3+ luminescence and meanwhile red-shift the 4f-5d 1 excitation/emission peaks. The results were interpreted by considering band structure and crystal field splitting of the Ce 3+ 5d energy level. The y = 0.01 and z = 0.15 phosphor exhibited a broad emission peaked at ∼561 nm under 457 nm excitation, with CIE color coordinates of around (0.449,0.527), a correlated color temperature of ∼3567 K, a fluorescence lifetime of ∼43 ns, and an activation energy for thermal quenching of ∼0.267 eV. Electroluminescence indicated that the phosphors may find potential application in warm-white LEDs excited by blue-LED chips.
✓ 已验证
DOI
高影响因子
INORGANIC CHEMISTRY
·
2024
·
IF 4.3
Jin Zhou,Andi Liu,Fangyuan Song,Langsheng Ling,Jingxin Li,Wei Tong,Zhengcai Xia,Gaoshang Gong,Yongqiang Wang,Jinkui Zhao,Hanjie Guo,Zhaoming Tian
Compared with the intensive investigation on 3d transition metal (TM)-based spin ladder compounds, less attention has been paid to the ones constructed by rare earth (RE) ions. Herein, we report a family of RE-based spin ladder compounds Ba2RE2Ge4O13 (RE = Pr, Nd, Gd–Ho) crystallized into a monoclinic structure with the space group C2/c. The RE ions are arranged on a two-leg spin ladder motif along the b-axis, where the rung and leg exchange interactions are bridged via RE–O–RE pathways and RE–O–Ge–O–RE routes, respectively. Moreover, the much shorter rung distance in RE2O12 dimer units than the leg distance suggests that Ba2RE2Ge4O13 compounds are strong-rung spin ladder systems. All of the synthesized Ba2RE2Ge4O13 (RE = Pr, Nd, Gd–Ho) compounds exhibit dominant antiferromagnetic (AFM) interactions and the absence of magnetic order down to 1.8 K. Among the family members, Ba2Dy2Ge4O13 can be described by Jeff = 1/2 Kramers doublet states, and the low-temperature specific heat indicates the coexistence of the spin-dimerized state with a broad maximum at ∼2.4 K and long-range AFM order with TN = 0.81 K. This family of Ba2RE2Ge4O13 compounds thereby provides a rare platform to investigate the novel spin ladder physics constructed by 4f electrons.
研究领域:
凝聚态物理
·
磁学
·
无机化学
·
量子材料
✓ 已验证
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2026
·
IF 5.6
Xin Wang,Yujie Ren,Wenge Fan,Qingqing Zhu,Peilin Yuan,Peng Jin,Xiaodong Wei,Chufeng Sun
Yttria-stabilized zirconia (YSZ) ceramic-based flow passage components are highly susceptible to cavitation erosion. To counter this limitation, rare-earth oxide (REO, RE=La, Ce, Nd, Gd) doped YSZ with superior cavitation erosion resistance was successfully prepared using spark plasma sintering technology. The microstructures, phase compositions, mechanical properties, and cavitation erosion resistance of YSZ and REYSZ were investigated. The results indicate that REO doping promoted the generation of t'- and c-phases, leading to a denser structure and grain refinement. Moreover, the presence of a larger concentration of the t'-phase resulted in a higher microhardness and elastic modulus. Owing to its superior mechanical properties, fine grains and high density, REYSZ exhibited improved cavitation erosion resistance. Particularly, NdYSZ exhibited 12.4 times higher cavitation-erosion resistance than that of YSZ. Furthermore, the grain boundaries of YSZ contain special m-phase bands, which are also responsible for the quicker exfoliation of grains during cavitation erosion. The segregation of rare earth elements at the grain boundaries inhibited the generation of m-phase bands, resulting in a longer cavitation erosion incubation period for REYSZ.
✓ 已验证
产品关联
DOI
高影响因子
CARBOHYDRATE POLYMERS
·
2016
·
IF 4.219
Yan Huang,Peter Osei Boamah,Jianbo Gong,Qi Zhang,Mingqing Hua,Yuzhen Ye
The fusion of molecular and anatomical modalities facilitates more reliable and accurate detection in clinic. In this work, we prepared gadolinium (III) complex Gd-DTPA-FITC-CS 11 with magnetic resonance (MR) and fluorescence dual-modal imaging modalities. Gd-DTPA-FITC-CS 11 consisted of fluorescein isothiocyanate and low-molecular-weight chitosan (CS 11 ) units conjugated with gadolinium diethylenetriamine pentaacetic acid (Gd-DTPA). Gd-DTPA-FITC-CS 11 exhibited a higher longitudinal relaxivity (14.09 mM −1 s −1 ) than the clinical Gd-DTPA (3.85 mM −1 s −1 ). T 1 -weighted MR contrast enhancement was also demonstrated the comparability to Gd-DTPA at lower dosage. The binding with bovine serum albumin (BSA) was investigated. The fluorescence of BSA in the presence of Gd-DTPA-FITC-CS 11 was weakened due to static quenching mechanism. The conformation of BSA was slightly changed but α -helix was dominant. The binding was entropy-driven and spontaneous and the main contribution was hydrophobic interaction. Our results suggested the potential of Gd-DTPA-FITC-CS 11 as an MR/fluorescence dual-modal imaging contrast agent in improving the diagnostic sensitivity and accuracy.
研究领域:
医学影像学
·
生物化学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Analytical Methods
·
2017
·Vol. 9
·期 20
·2977-2982
·
IF 1.9
Yuanhui Ma,Liping Zhang,Lei Wang,Lun Wang,Hongqi Chen
A novel surface plasmon resonance (SPR) enhanced upconversion (UC) luminescence system was designed for the detection of α-fetoprotein (AFP) by using gold nanoparticle (NP) coated NaYF4:Yb,Er,Gd upconversion nanoparticles (UCNPs) as probes. The gold NP coated NaYF4:Yb,Er,Gd UCNPs had a strong emission at 665 nm and were modified with poly(acrylic acid) (PAA) before being conjugated with anti-AFP (Ab1). When the AFP antigens were added to the system, the binding affinity between AFP and Ab1 resulted in a reduced distance between the gold NP coated UCNPs. The UC luminescence intensity of this system was enhanced because of the SPR properties of the gold NPs. The sensing system exhibited a high sensitivity, good specificity, and wide linear range, 0.098–15.0 ng mL−1 for the detection of AFP (R = 0.99), with a detection limit as low as 0.095 ng mL−1 under optimal conditions. The method was successfully applied to AFP sensing in human serum samples.
研究领域:
生物医学工程
·
分析化学
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
·
2020
·
IF 4.495
Qinghong Meng,Xuejiao Wang,Qi Zhu,Ji-Guang Li
A series of phase-pure [(Gd 0.6 Lu 0.4 ) 0.99 Ce 0.01 ] 3 [Al 1- z (Mg/Si) z ] 5 O 12 ( z = 0-0.10) garnet phosphor powders were prepared via gel-combustion, which were then sintered into ceramics (up to 1550 °C) under atmospheric pressure. Dilatometry revealed that equimole of Mg 2+ /Si 4+ substitution for Al 3+ accelerates densification and lowers the activation energy for grain boundary diffusion in the intermediate stage of sintering (∼1150–1370 °C), which was assayed to be ∼353 kJ/mol for z = 0 and ∼289 kJ/mol for z = 0.10. The acceleration effects of Mg 2+ /Si 4+ on sintering and grain growth were further demonstrated by the results of ramp and holding sintering. Firing at 1550 °C for 4 h also produced ∼99 % dense ceramics for the Mg 2+ /Si 4+ codoped garnet powders. Through considering crystal splitting of the Ce 3+ 5d energy level, photon-phonon coupling, and crystal structure/microstructure, the influences of Mg 2+ /Si 4+ content and material form on Ce 3+ luminescence, including intensity, external/internal quantum efficiencies, emission wavelength, CIE color coordinates and decay time, were clarified in detail.
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
Nanoscale
·
2022
·Vol. 14
·期 29
·10581-10593
·
IF 8.307
Xinguo Zhu,Xianlong Zhang,Shaoyun Guo
The increasing utilization of nuclear energy and radiation medicine has urged flexible neutron shielding materials for personal protection. However, it was a challenge to manufacture neutron shielding materials with good flexibility and efficient neutron shielding performance. Herein, a new type of hybrid filler named Gd@MXene nanoflakes were successfully synthesized via one step-hydrothermal reaction and used for efficient neutron shielding, which was composed of two-dimensional (2D) Ti3C2Tx-MXene nanoflakes and zero-dimensional Gd nanoparticles (NPs). Inspired by fish scales, the spin coating method was employed to manufacture the film composed of polyvinyl alcohol (PVA) and Gd@MXene, which aligned random Gd@MXene into oriented 2D fish scale-like barrier walls. The 2D fish scale-like Gd@MXene barrier walls scattered the neutron rays multiple times between the nanoflakes, thereby improving the neutron absorption efficiency of Gd atoms. The film showed excellent neutron shielding performance and thermal conductivity; the neutron shielding rate of 20-Gd@MXene/PVA with a thickness of 62 μm was 3.36 times higher than that of pure PVA. The thermal conductivity of Gd@MXene/PVA was nearly 10 times higher than that of pure PVA. This work introduced a novel film for neutron radiation shielding and had potential applications in personal wearable protective equipment.
研究领域:
核能工程
·
材料科学
·
辐射防护
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Ming yang,Yuxin Zhou,Dandan Zhang,Fang Zhou,Hui Ning,Maoxia He,Ru-an Chi,Weiyan Yin
Developing a high-performance adsorbent for the recovery of Gd(III) from wastewater is of great environmental and economic significance. Metal organic frameworks (MOFs) functionalized with mixed-linker defect strategy hold huge potential for use as adsorbents for removing heavy metal ions from wastewater. However, the defective MOFs still show a relative low selectivity to target metal ions. Herein, we propose the combination of surface-imprinting and defect engineering strategies to synthesize Gd(III) ion-imprinted polymers (G-IIPs) based on mixed-linker Zr-MOFs, and apply them for capturing Gd(III) ions from wastewater. It is worth noting that 2-hydroxyphosphonoacetic acid not only served as monodentate ligand to in-situ induce ligand vacancies and form hierarchical pores on UiO-66-NH 2 , but also as high-efficient functional monomer in imprinted layer to provide the strong coordination ability towards Gd(III). Benefiting from its abundant binding sites and hierarchical pore structure, the as-prepared G-IIP-3 with rich defects displays a high adsorption capacity of 181.75 mg·g −1 and a short equilibration time of 30 min for Gd(III). In addition, G-IIP-3 presents highly selective capture of Gd(III) over interfering ions. Furthermore, density functional theory calculation demonstrates that both phosphate group and Zr-O cluster play key roles in the Gd(III) adsorption process. Thus, this work provides an effective method to develop high-performance materials for Gd(III) recovery by organically combining the advantages of surface-imprinting and defect engineering strategies.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF NANOBIOTECHNOLOGY
·
2023
·Vol. 21
·期 1
·1-17
·
IF 10.2
Pan Qi,Li Ke,Kang Xueqin,Li Kaixuan,Cheng Zihe,Wang Yafei,Xu Yuye,Li Lei,Li Na,Wu Guilong,Yang Sha,Qi Shuo,Chen Guodong,Tan Xiaofeng,Zhan Yonghua,Tang Li,Zhan Wenhua,Yang Qinglai
Orthotopic advanced hepatic tumor resection without precise location and preoperative downstaging may cause clinical postoperative recurrence and metastasis. Early accurate monitoring and tumor size reduction based on the multifunctional diagnostic-therapeutic integration platform could improve real-time imaging-guided resection efficacy. Here, a Near-Infrared II/Photoacoustic Imaging/Magnetic Resonance Imaging (NIR-II/PAI/MRI) organic nanoplatform IRFEP-FA-DOTA-Gd (IFDG) is developed for integrated diagnosis and treatment of orthotopic hepatic tumor. The IFDG is designed rationally based on the core “S-D-A-D-S” NIR-II probe IRFEP modified with folic acid (FA) for active tumor targeting and Gd-DOTA agent for MR imaging. The IFDG exhibits several advantages, including efficient tumor tissue accumulation, good tumor margin imaging effect, and excellent photothermal conversion effect. Therefore, the IFDG could realize accurate long-term monitoring and photothermal therapy non-invasively of the hepatic tumor to reduce its size. Next, the complete resection of the hepatic tumor in situ lesions could be realized by the intraoperative real-time NIR-II imaging guidance. Notably, the preoperative downstaging strategy is confirmed to lower the postoperative recurrence rate of the liver cancer patients under middle and advanced stage effectively with fewer side effects. Overall, the designed nanoplatform demonstrates great potential as a diagnostic-therapeutic integration platform for precise imaging-guided surgical navigation of orthotopic hepatic tumors with a low recurrence rate after surgery, providing a paradigm for diagnosing and treating the advanced tumors in the future clinical translation application. Graphical Abstract
研究领域:
生物医学工程
·
癌症研究
·
医学影像
·
纳米技术
·
诊疗学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SUPERCONDUCTOR SCIENCE & TECHNOLOGY
·
2021
·Vol. 34
·期 4
·045004
·
IF 3.219
Limin Li,Li Lei,Gaoyang Zhao,Bo Deng,Fuxue Yan,Chengshan Li
The overall purpose of this work is to develop a reliable and low-cost technique for fabrication of coated conductors (CCs) on the flexible substrates, and to understand the effects of oriented growth and microstructure on the superconducting performance of CCs in-depth. The investigations of gradient La2−xGdxZr2O7 buffer architecture and YBa2Cu3O7−δ (YBCO) film on Ni-5at%W rolling-assisted biaxially textured substrate using all sol–gel process are reported. Combining x-ray diffraction and transmission electron microscopy (TEM) analysis, it is revealed that the gradient buffer architecture with increased lattice constant along the direction of film growth has an excellent c-axis orientation, while the inversed gradient architecture with decreased lattice constant shows the deteriorated orientation, indicating that the highly epitaxial growth mechanism most likely related to the interfacial lattice matching degree. The detailed analysis of YBCO films grown on gradient La2−xGdxZr2O7 under different deposition parameters, and the influence of microstructure on electrical properties are systematically discussed using x-ray diffraction, rocking curve test, scanning electron microscopy and TEM observations. Finally, the excellent biaxial texture YBCO film on gradient La2−xGdxZr2O7 buffer architecture is prepared at a proper heat-treatment temperature of 780 °C, and the full width at half maximum of ϕ-scan and ω-scan are 5.9° and 6.4°, respectively. The critical transition temperature Tc,onset of the as-prepared YBCO film is 90 K. With elevating the temperatures, the appearance of a large number of weak-link and amorphous regions, being indicative of the microstructural collapse, is mainly responsible for the reduced superconductivity.
研究领域:
材料科学
·
凝聚态物理
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）