CERAMICS INTERNATIONAL
·
2021
·
IF 4.527
Shengtai Zhang,Lingkun Wang,Baoliang Xu,Jian Liu,Shilin Luo,Shiyin Ji,Yi Ding,Ling Zhang,Jianjun Ma,Tao Duan
The garnet structure is a promising solid material for nuclear waste because it can contain all kinds of actinides. Yttrium iron garnet Y 3 Fe 5 O 12 (YIG) is the model component of this kind of substitute. In this study, Nd-doped YIG ceramic samples were prepared by microwave sintering at different sintering temperatures (1100 °C, 1200 °C, and 1300 °C) for different sintering time (0.5 h, 2 h, 4 h, and 6 h). The effects of synthesis temperature and sintering time on the solubility and microstructure of Y 3-x Nd x Fe 5 O 12 (0 ≤ x ≤ 3.0) were evaluated. The X-ray diffraction (XRD), scanning electron microscopy (SEM) and backscattering scanning electron microscopy (EBSD) results show that single phase garnet structure can be synthesized and enhanced solubility of Nd in YIG was found at higher temperatures. The solubility of Nd in garnet is 50 mol% (x = 1.5) and 60 mol% (x = 1.8) at 1200 °C and 1300 °C, respectively. There is no significant dependence of the solubility on sintering time. The SEM analysis and Archimedes drainage test show that the relative density of Y 1.2 Nd 1.8 Fe 5 O 12 ceramics is 88.15% and 99.94% at 0.5 h and 6 h, respectively, indicating dense YIG could be obtained with a relatively long sintering time. The results show that microwave sintering can rapidly and efficiently synthesize the YIG ceramic samples.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ELECTRONIC MATERIALS
·
2016
·Vol. 46
·期 1
·363-369
·
IF 1.491
Wang Xuesong,Li Haiying,Ni Mucui,Wang Lianyuan,Liu Li,Wang Han,Guo Xuexin
The ruptured Nd-doped In 2 O 3 porous nanotubes have been successfully synthesized by single-capillary electrospinning method. The morphologies of the as-prepared materials were characterized by scanning electron microscopy and transmission electron microscopy. It can be seen obviously that the surface of the nanotubes are distributed with cracks and pores, which formed such an open nanostructure. The crystal structures and components were determined by x-ray diffraction, energy-dispersive x-ray spectroscopy and x-ray photoelectron spectrometer. The gas-sensing properties of ruptured Nd-doped In 2 O 3 porous nanotubes were studied and the results show the excellent performances of the as-obtained materials. The response of ruptured Nd-doped In 2 O 3 porous nanotubes to 100 ppm of formaldehyde is 46.8 at the optimum temperature of 240°C. The response and recovery times are 8 s and 22 s, respectively. Furthermore, the lowest detection limit of formaldehyde is 100 ppb with the value of 2.4. In addition, the ruptured Nd-doped In 2 O 3 porous nanotubes exhibit good selectivity to formaldehyde and long-term stability.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
·
2024
·
IF 4.1
Boyan Ai,Guoxiang Wang,Pengchao Liang,Jinxiu Bing,Majie Zhang,Qingwang Min,Xinxin Zhang
The development of highly active and acid-stable Ru-based electrocatalysts is of great significance for water electrolysis but remains a huge challenge due to serious Ru corrosion in an acid medium. Herein, we prepared oxygen vacancy (O V )-rich Nd-doped RuO 2 nanocrystals by facile synthesis via hydrothermal and subsequent annealing for efficient overall water splitting. The catalyst exhibits an overpotential of only 200 mV for OER and 44 mv for HER at the current density of 10 mA cm −2 in 0.5 M H 2 SO 4 electrolyte. Nd-doped RuO 2 only demands a cell voltage of 1.52 V to drive the overall water splitting reaction and displays excellent stability for 100 h. Density functional theory further revealed that the newly constructed Nd-doped RuO 2 sites activate the difficult to react *O intermediates, reducing the adsorption energy of the OER intermediates to effectively minimize the Gibbs free energy (*O to *OOH) of the reaction rate-determining step and regulate the center of the active site d-band. The synergistic effect of aliovalent doping and vacancy engineering contributes to the excellent electrocatalytic performance of Nd-doped RuO 2 . This performance control strategy can pave the way for the development of effective and economically viable catalysts.
✓ 已验证
产品关联
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2024
·
IF 5.5
Jianru Li,Cunying Xu,Guilin Xiang,Wenkang Chen,Daiyun Gu,Qibo Zhang,Yixin Hua,Yan Li
The electrodeposition of neodymium (Nd) in a novel analogous ionic liquid (AIL), phenyltrimethylammonium chloride-ethylene glycol (TMPAC-EG), was investigated. The existence form and the electrochemical behavior of Nd(III) in TMPAC-EG were studied using spectroscopic, cyclic voltammetry and chronoamperometry analyses. The spectroscopic analyses indicates that Nd 3+ interact with Cl − and EG to form complexes [Nd(EG) 6-y Cl y ] 3-y as NdCl 3 dissolves in TMPAC-EG IL. Cyclic voltammograms reveals that the overpotential for Nd electrodeposition in TMPAC-EG IL decreases with the rise of the temperature. The diffusion coefficient of Nd(III) ions is calculated to about 10 −12 m 2 s −1 . The diffusion activation energy for Nd(III) ions is determined to be 22.8 kJ mol −1 from the temperature dependence of diffusion coefficient. The transient analysis indicates that initial nucleation behavior of Nd conforms to the three-dimensional instantaneous nucleation and growth model, which are largely independent of temperature. In addition, deposition temperature and deposition potential are found to have a great influence on the nucleation and growth kinetics of Nd electrodeposition. Depending on the temperature and potential of electrodeposition, metallic neodymium with caterpillar-shape, nodule, layered rock, or porous structures was obtained.
✓ 已验证
产品关联
DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2025
·
IF 7.7
Jiayi Qu,Yujun Guo,Xingtai Chen,Hongsen Xie,Shuheng Ding,Haoyun Zhao,Xiaoning Wang,Davoud Dastan,Xi-Tao Yin,Xiaoguang Ma
This paper reports the first hydrothermal synthesis of Nd-doped (1–4 mol%) CdS gas sensor materials. After gas sensitivity testing, it was found that sensors doped with 3 mol% performed best in detecting n-butanol gas at 275 °C: the response to 100 ppm n-butanol reached 127 (approximately 3.34 times that of pure CdS), Compared with common VOC gases in daily life, the sensor has good selectivity for n-butanol, with an extremely fast recovery time (3 s). It also demonstrated extremely high detection accuracy (R² = 0.96857) across a concentration range of 10–300 ppm n-butanol, along with excellent humidity resistance and long-term stability. Characterization of the material was conducted using XRD (X-ray diffraction), SEM (scanning electron microscope), TEM (transmission electron microscope), and XPS (X-ray photoelectron spectroscopy), revealing the following reasons for the enhanced gas-sensing performance: 1. Nd³ ⁺ doping causes lattice distortion, forming a highly active region around the sulfur vacancy and enhancing the gas-vacancy electron exchange efficiency. 2. Lattice distortion inhibits grain growth (≈26.85 nm), providing more gas adsorption/reaction sites and significantly improving the response value. reaction sites, significantly improving the response value. 3. Nd³ ⁺ reduces the adsorption energy of n-butanol, promoting gas adsorption/reaction processes while accelerating desorption. This paper provides materials with practical application value for sensors used in n-butanol detection.
✓ 已验证
产品关联
DOI
高影响因子
NATURE
·
2025
·
IF 48.5
Lin Yuexin,Lin Zhichao,Lv Shili,Shui Yuan,Zhu Wenjing,Zhang Zuhong,Yang Wenhan,Zhao Jinbo,Gu Hao,Xia Junmin,Wang Danning,Du Fenqi,Zhu Annan,Liu Jin,Cai Hairui,Wang Bin,Zhang Nan,Wang Haibin,Liu Xiaolong,Liu Tao,Kong Chuncai,Zhou Di,Chen Shi,Yang Zhimao,Li Tao,Ma Wei,Fang Guojia,Echegoyen Luis,Xing Guichuan,Yang Shengchun,Yang Tao,Cai Wenting,Li Meng,Huang Wei,Liang Chao
A critical challenge in the commercialization of perovskite solar cells (PSCs) is the simultaneous attainment of high power conversion efficiency (PCE) and high stability. Employing polymers interfaces in PSCs can enhance durability by blocking water and oxygen, and by suppressing ions interdiffusion, but their electronic shielding poses a challenge for efficient and stable PSCs 1–3 . In this study, we report a magnetic endohedral metallofullerene Nd@C 82 -polymer coupling layer, which features ultra-fast electron extraction and in-situ encapsulation, thereby promoting homogeneous electron extraction and suppressing ions interdiffusion. The Nd@C 82 -polymer coupling layer in PSCs exhibited PCE of 26.78% (certified 26.29%) and 23.08% with an aperture area of 0.08 square centimetres and 16 square centimetres (modules), respectively. The unencapsulated devices retained ~82% of the initial PCE after 2,500 hours of continuous 1-sun maximum power point operation at 65 °C.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
·
2025
·Vol. 109
·期 1
·e70338
·
IF 3.8
Yuanyuan Li,Hongbing Yang,Yilei Huang,Shichang Cheng,Chang-An Wang,Yanhao Dong
As a pivotal optical material, the microstructure of YAG (yttrium aluminum garnet) nanocrystalline ceramics directly determines their laser and luminescent performance. This study demonstrates that rare-earth doping at grain boundaries significantly improves sintering behavior through a dual-stage regulation mechanism: during the initial stage (relative density 65%–90%), dopants (Nd/Ce) suppress mass diffusion by stabilizing grain boundary structures; whereas in the intermediate stage (75-85% relative density), they enhance diffusion by modifying grain boundary energy states. This kinetic regulation enables Nd-doped samples to achieve 99.3% relative density at 1200°C (50°C lower than pure YAG) while maintaining grain size at 57–64 nm. The doped systems achieved the requisite thermodynamic state for successful two-step sintering at significantly lower T 1 temperatures (Nd-YAG: 1175°C, Ce-YAG: 1175°C) compared with pure YAG (1200°C). The study confirms that Nd/Ce doping achieves coordinated densification-grain growth control through grain boundary segregation, providing critical theoretical guidance for fabricating high-performance transparent ceramics, particularly for developing novel Nd/Ce:YAG laser and scintillation ceramics.
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Optical Materials
·
2026
·
IF 3.4
Dong Liu,Shuyi Zhang,Luzong Jing,Hao Wang,Guanwen Chen,Longfei Xu,Hongqiang Song,Xiangliang Kong,Zhongchen Wu,Yao Chen
The rapid expansion of commercial spaceflight is driving space X-ray detectors toward ultimate cost-effectiveness. Compared with conventional semiconductors, metal halide perovskites, with superior optoelectronic properties and low-cost solution processability, are promising candidates for space radiation detection. Herein, we first synthesized Nd-MAPbBr3 single crystals, with Nd3+ causing lattice contraction and thus improving the crystal tolerance factor. We uncover a correlation between color evolution and crystallization, with the precursor solution turning purple from colorless after adding NdBr3 and yellowing during crystallization due to methylamine oxidation. The fabricated planar Nd-MAPbBr3 X-ray detector exhibits a sensitivity of 162.64 μC Gy–1 cm–2 and a detection limit of 4 μGy s–1 under a low electric field of 20 V cm–1. Notably, after cumulative X-ray irradiation of 320 mGy, the sensitivity of the Nd-MAPbBr3 detector improves by 33.75%, demonstrating superior radiation tolerance. These results highlight Nd-MAPbBr3 single crystals as a promising material for space X-ray detection.
✓ 已验证
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2022
·Vol. 48
·期 12
·16773-16777
·
IF 5.532
Yi Ding,Zhen Li,Zimei Bai,Zhengdi Jiang,Zhenyu Chen,Xuanrui Zhang,Chao Lu,Hui Dan,Tao Duan
Rapid preparation of ceramic waste form at low temperature is of great engineering significance for immobilization of high-level radioactive waste . Herein, we demonstrated that Nd-doped zirconia ceramics can be rapidly prepared at low sintering temperature with the assistance of hydrothermal assisted sol-gel method. The effects of sintering temperature and Nd content on the phase and microstructure evolutions of the obtained ceramics were studied. With the increasing content of Nd, the phase of ZrO 2 transformed from monoclinic to cubic at first, then the pyrochlore Nd 2 Zr 2 O 7 phase appeared, and finally hexagonal neodymia solid solution structure formed. Moreover, the grain size and compactness of the obtained ceramics increased with the increment in sintering temperature. The successful accommodation of Nd within the ZrO 2 lattice was revealed by the detected increase of cell parameters. This work demonstrated that the hydrothermal assisted sol-gel process can be employed to effectively synthesize the Nd-doped zirconia ceramics as potential hosts for HLW immobilization.
研究领域:
材料科学
·
核废物管理
·
陶瓷工程
✓ 已验证
DOI
高影响因子
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
·
2022
·Vol. 331
·期 4
·1759-1767
·
IF 1.754
Liu Yaoyang,Liu Zhibin,Zhao Chuang,Jiao Caishan,Zhang Meng,Zhou Yu,Gao Yang,Li Huibo,He Hui
In order to further study the structure-performance relationship of unsymmetrical diglycolamides. In this work, two types of unsymmetrical diglycolamides (Structure A : N,N’ -dimethyl- N,N’ -didecyl diglycoamide, L I , N,N’ -dimethyl- N,N’ -didodecyl diglycoamide, L III ; Structure B : N,N -dimethyl- N’,N’ -didecyl diglycoamide, L II , N,N -dimethyl- N’,N’ -didodecyl diglycoamide, L IV ), which are geometrical isomers each other, were synthesized, and their extraction performances in 40/60 (v/v)% n-octanol/kerosene were studied and compared. The related results reveal that the size of the alkyl substituents attached on the amide N atoms can influence the extractant performance of the extractant, and the difference in the geometric structure of extractants can lead to the differences in their extraction performances.
✓ 已验证
产品关联
DOI
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2023
·
IF 4.2
Zhenfeng Xiong,Ying Huang,Nan Li,Chaozhi Zhang,Yonghua Li,Zhuo Yang,Weidong Zhou,Kemei Zhou,Rong Zha,Changdong Sheng
Recovery of rare-earth elements (REEs), especially those of Dy and Nd, from Nd–Fe–B permanent magnets is crucial for sustainable development. Herein, an unsymmetrical pentanediamide extractant, N,N′-dimethyl-N,N′-didecyl-3-oxapentanediamide (DMDDOPDA), was synthesized and characterized for the effective extraction of Dy(III) and Nd(III). DMDDOPDA can form coordination bonds with metal ions because of the strong electron-donating abilities of the N and O atoms. The coordination sites might be inclined toward one side during the extraction. DMDDOPDA exhibited superior extraction performance in the HNO3 system than it did in the HCl system. The highest extraction efficiencies of Dy(III) and Nd(III) under optimal conditions were 99.9% and 99.5%, respectively, while their optimum stripping efficiencies were 100% and 85.3%, respectively. DMDDOPDA extraction of Dy(III) and Nd(III) in the four investigated diluents involved the formation of a neutral coordination complex. This study provides new insights into REE extraction using pentanediamide extractants.
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2023
·
IF 9.5
Zeinab Marfavi,Ruihao Yang,Lingbo Wei,Yijun Han,Quanjie Lv,Yingfan Dai,Kang Sun,Congli Yuan,Ke Tao
Day–night photocatalysts that can persistently generate reactive oxygen species (ROS) after ceasing light attracted intensive attention in diverse fields. However, current strategies of combining a photocatalyst and an energy storage material can hardly fulfill the demands, especially in size. We herein present a one-phase sub-5 nm day–night photocatalyst via simply doping Nd, Tm, or Er into YVO4:Eu3+ nanoparticles, efficiently producing ROS in both day and night modes. We demonstrate that the rare earth ions acted as a ROS generator, and Eu3+ and defects contributed to the long persistency. Furthermore, the ultrasmall size led to remarkable bacterial uptake and bactericidal efficacy. Our finding suggests an alternative mechanism of day–night photocatalysts that could be ultrasmall and thus may shed light on disinfection and other applications.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）