ACS Applied Materials & Interfaces
·
2026
·Vol. 18
·期 30
·40660-40671
·
IF 7.8
Jin Zhao,Yao Shunyu,Sun Chang,Zhang Chunqi,Liang Licheng,Liu Yipeng,Yang Qingqing,Liang Fei
The practical deployment of magnesium-based alloys, despite their attractive hydrogen-storage capacity and economical advantage, faces critical barriers in the form of high dehydrogenation temperatures and inadequate sorption kinetics. To overcome these barriers, a two-dimensional layered La x @Ti 3 C 2 -derived catalyst was therefore developed, which exhibits high catalytic activity toward the Mg-4Ni-2Y alloy. The Mg-4Ni-2Y + 10 wt % La 0.2 @Ti 3 C 2 composite not only lowered the onset absorption/desorption temperatures to 23.3 ° C and 265.5 ° C but also enabled the composite to achieve superior sorption kinetics, absorbing 4.80 wt % H 2 in 1 min at 150 ° C and releasing 5.16 wt % H 2 in 4 min at 350 ° C. Furthermore, the apparent activation energy (E a ) was substantially reduced to 85.22 ± 2.38 kJ/mol for the composite, thereby decreasing the dehydrogenation temperature and accelerating the kinetics. Systematic analysis suggests that the catalytic enhancement is primarily associated with highly dispersed Ti 0 species, which are proposed to act as the primary active sites for hydrogen dissociation and recombination. La decoration is suggested to serve as an electronic promoter, modulating the electronic structure of Ti sites and stabilizing the interfacial environment. This synergistic Ti-La interaction facilitates hydrogen activation and interfacial transfer without altering the intrinsic Mg/MgH 2 thermodynamics, thereby significantly accelerating hydrogen sorption kinetics.
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DOI
PubMed
高影响因子
MATERIALS CHARACTERIZATION
·
2025
·
IF 5.5
Xianshu Dong,Tianshun Dong,Jingkun Li,Yanfei Jiang,Binguo Fu,Guolu Li
To improve the wear resistance of Al 30Si coatings, nano-Y₂O₃-reinforced Al 30Si (Y₂O₃/Al-30Si) coatings were fabricated on 6063 aluminum alloy substrates by atmospheric plasma spraying (APS). The effect of nano-Y 2 O 3 addition on the coating was studied in detail. The results show that nano-Y₂O₃ reduced the porosity of the Al 30Si coatings from 8.2 % to 3.1 %. Nano-Y₂O₃ can provide heterogeneous nucleation sites for primary silicon (β-Si) phases, enabling the Y₂O₃/Al-30Si coating to achieve a 57.4 % reduction in β-Si phase size. Correspondingly, the microhardness, elastic modulus and fracture toughness of the coating increased by 11.0 %, 11.2 % and 48.9 %, respectively. Under the present test conditions, the Y₂O₃/Al-30Si coating exhibited a lower coefficient of friction and a 27.2 % reduction in wear volume. Both the Y₂O₃/Al-30Si and Al 30Si coatings exhibited abrasive, oxidative, and fatigue wear mechanisms.
研究领域:
材料科学
·
表面工程
·
金属涂层
·
摩擦学
·
复合材料
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高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2025
·Vol. 36
·期 34
·2170
·
IF 2.8
Wang Yan,Su Congxue,Tao Wenlong,Chen Zelong,Fan Jun,Cheng Min,Chen Beiyi,Zhou Huanfu,Sun Yuan
In light of advancements in 5G/6G technologies, current research on microwave dielectric ceramics is focused on the development of materials characterized by low sintering temperatures and low permittivity, in order to satisfy the requirements of high-frequency low-temperature co-fired ceramic (LTCC) applications. Novel monoclinic structure GdBaK(MoO 4 ) 3 and YBaK(MoO 4 ) 3 ceramics, with C2 / c space group, were synthesized using a conventional solid-state method. GdBaK(MoO 4 ) 3 and YBaK(MoO 4 ) 3 ceramics were sintered at 830 °C and 850 °C, exhibited ε r ~ 8.54 and 8.77, τ f ~ − 51.1 ppm/°C and − 45.8 ppm/°C, Q × f ~ 23, 240 GHz and 59, 277 GHz, respectively. The compression from Ba 2+ and K + cations was identified as the main reason for the higher theoretical ε theo compared to the corrected ε corr . The dielectric loss of both ceramics is mainly affected by the density and packing fraction. The full width at half maximum (FWHM) values of the vibrational peak at 932 cm −1 , corresponding to the symmetric stretching modes of MoO 4 2− , exhibits a negative correlation with the Q × f values. Based on the P–V–L theory, the lattice energy and bond energy associated with the Mo–O bond played a substantial role in influencing the Q × f and τ f . Moreover, YBaK(MoO 4 ) 3 showed good chemical compatibility with Ag, indicating its potential for LTCC applications.
研究领域:
材料科学
·
陶瓷与复合材料
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微波技术
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介电材料
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电子材料
·
固态化学
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DOI
高影响因子
OPTICAL MATERIALS
·
2023
·
IF 3.9
Yibo Zhang,Shen Wang,Biao Liu,Yan Hao
MgAl 2 O 4 :Cr 3+ transparent ceramics were prepared by a hot-pressed sintering process with Y 2 O 3 and La 2 O 3 as sintering aids, and the effects on the microstructure, densification, optical transmission, and photoluminescent properties were investigated. The sintering aids of Y 2 O 3 and La 2 O 3 enhanced the relative density, reaching 99.33% with 2.4 wt% Y 2 O 3 and 99.24% with 0.8 wt% La 2 O 3 . La 2 O 3 also inhibited abnormal grain growth and obtained ceramics with uniform grain size. In addition, the optical transmission was also improved with Y 2 O 3 and La 2 O 3 as sintering aids. The transmission of the ceramic with 2.4 wt% Y 2 O 3 exceeded 78% in the region of 700–6000 nm and reached 83% at 1450 nm. Moreover, Y 2 O 3 and La 2 O 3 both contributed to improving the quantum yield of the ceramics, especially for Y 2 O 3 , and the quantum yield was about 0.354, which was approximately two times higher than that without R 2 O 3 . In summary, La 2 O 3 was helpful for improving sintering process, inhibiting grain growth, and homogenizing the grain size, while Y 2 O 3 was significant for enhancing the optical and photoluminescent properties.
研究领域:
材料科学
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无机非金属材料
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功能陶瓷
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光电子学
·
固态发光材料
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DOI
高影响因子
ACS Applied Energy Materials
·
2022
·
IF 6.959
Xiaofei Sun,Zikang Wang,Qiongdan Hu,Xuesong Mei,Yue Zhao,Anastase Ndahimana,Tao Geng,Jianlei Cui
The abundant reserves of sodium resources and its low price make the desire to build energy storage systems on room-temperature rechargeable sodium batteries. The current challenge exists in exploring high-performance key materials, especially cathode materials. Vanadium-based phosphates have attracted extensive attention as a class of promising cathode materials for sodium batteries due to their stable structure, large capacity, and high voltage advantages. In this paper, sodium vanadium oxyfluorophosphate, Na3V2(PO4)2F3–2yO2y (0 ≤ y < 1), is exploited to improve its electrochemical performance through oxygen tuning. The effect of oxygen amount on the structure, morphology, and performance is comprehensively and comparatively investigated. It is found that the optimal electrochemical performance is achieved in Na3V2(PO4)2F2O when y = 0.5. Its specific discharge capacity at 0.1, 0.5, 1, 8, and 20 C is 125, 111, 101, 71, and 58 mA h g–1, respectively. The superior rate performance and good cyclability are ascribed to the low impurity, mixed V3+/V4+ valence state, small particle size, suitable residual carbon coating, low charge transfer resistance, fast Na+ diffusion, and particularly the regulation of charge/discharge potentials as well as polarizations due to proper oxygen tuning.
研究领域:
储能
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电化学
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材料科学
·
电池技术
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DOI
高影响因子
INORGANIC CHEMISTRY
·
2024
·
IF 4.3
Keke Hou,Chenjie Lou,Mingxue Tang,Hujun Cao,Laijun Liu,Jungu Xu
Ruddlesden–Popper (RP)-structured materials based on transition metals with a variable valence, such as Fe, Mn, Ni, and so on, have been well documented for their potential of being used as electrodes in solid-oxide fuel cells. However, RP materials with pure or dominant ionic conduction are rare. Here, a series of Zr-based RP materials Sr3Zr2–xMxO7–0.5x (M = Ga, Y, In) with electrical conductivity as high as 3.25 × 10–3 S cm–1 at 900 °C in air was reported, which represents the highest conductivity for the Zr-based RP materials and is comparable to that of the recently reported In-based RP oxide-ion conductors, such as NdBaInO4-based and La2BaIn2O7-based materials. Under low oxygen partial pressure (pO2), the doped samples show pure ionic conducting behaviors without n-type electronic conductivity. The defect formation energies, local structure around the oxygen vacancies, and oxide-ion-conducting mechanism of the acceptor-doped Sr3Zr2O7-based materials were studied for the first time. The results revealed a two-dimensional oxide ion migration characteristic within the perovskite slabs. This work therefore provides a good reference for developing new oxide-ion conductors in the Zr-based RP-structured materials.
研究领域:
材料科学
·
固体离子学
·
能源材料
·
陶瓷材料
·
燃料电池
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DOI
高影响因子
DALTON TRANSACTIONS
·
2022
·Vol. 51
·期 31
·11703-11712
·
IF 4.569
Jun Sun,Minghui Zhou,Bei Zhang,Youjie Hua,Feifei Huang,Hongping Ma,Renguang Ye,Shiqing Xu
A series of Rb1−yKyNa3(Li3SiO4)4:Eu2+(0 ≤ y ≤ 1) phosphors were successfully synthesized through a high-temperature solid-state reaction. The introduction of K+ into the RbNa3(Li3SiO4)4:Eu2+ phosphor to partially or completely replace Rb+ allows the emission spectrum to be modulated from blue (λ = 473 nm, FWHM = 22.5 nm) to a narrow cyan band (λ = 485 nm, FWHM = 21.1 nm). As the K+ ion content increases, the space group of the phosphor evolves from I4/M to I41/A. The complete replacement of Rb+ by K+ results in the KNa3(Li3SiO4)4:Eu2+ cyan phosphor, which shows excellent thermal stability (the comprehensive emission loss is only 8% at 150 °C) and can be used to fill the cyan light gap in white LED devices. By adding the KNa3(Li3SiO4)4:Eu2+ cyan phosphor in packaging with yellow and red phosphors, the color rendering index is increased from 90.2 to 97.1 and the correlated color temperature improved to 3658 K. These results indicate that the cyan phosphor has important application value in full-spectrum white LEDs.
研究领域:
材料科学
·
光学工程
·
无机非金属材料
·
发光材料
·
半导体照明
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DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2023
·Vol. 47
·期 26
·12109-12116
·
IF 3.3
Ming-Hui Cao,Ren-Yan Li,Fen-Fen Huang,Xin-Yin Cai,Miao Cui,Shi-Ya Lin,Jing-Yang Tian,Yuan-Ping Jiang,Zulipiya Shadike,Zheng-wen Fu
P2-Na0.6Li0.11Fe0.27−xMn0.62YxO2 (x = 0, 0.5%, 1%, and 2%) cathode materials were successfully prepared using a traditional solid-state method with ball milling-assisted modification. The effect of Y-doping on the crystal structure, grain size, morphology and sodium storage performance of Na0.6Li0.11Fe0.27Mn0.62O2 was investigated using X-ray diffraction (XRD), scanning electron microscopy (SEM), galvanostatic charge–discharge cycling tests, cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). The results demonstrated that the ball-milling pre-treatment method could effectively reduce the grain size and mitigate the aggregation of Na0.6Li0.11Fe0.27Mn0.62O2. Additionally, reasonable Y-doping (x = 1%) significantly enhances the rate capability and cycling stability of Na0.6Li0.11Fe0.27Mn0.62O2via improving the Na+ diffusion kinetics and the reversibility of the oxygen redox reaction. These results indicate that Na0.6Li0.11Fe0.26Mn0.62Y0.01O2 is a promising candidate material for high-rate and long-life cathodes for Na-ion battery application.
研究领域:
材料科学
·
电化学
·
能源存储
·
无机固体化学
·
电池技术
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DOI
高影响因子
Metals
·
2023
·Vol. 13
·期 4
·649
·
IF 2.9
Xiaoxi Ruan,Linlin Yang,Yan Wang,Yizhe Dong,Dake Xu,Mingxing Zhang
The corrosion of carbon steel causes dramatic economic losses each year. Since conventional corrosion prevention approaches may cause pollution problems to the environment, ecofriendly and effective corrosion approaches are desired. Microbiologically influenced corrosion inhibition (MICI) has been reported as a sustainable corrosion prevention method. This work aims to evaluate the corrosion inhibition effect of two bacterial strains,Tenacibaculum mesophilumD-6 andBacillussp. Y-6 by choosing Q235 carbon steel as a model system. Scanning electron microscopy (SEM), confocal laser scanning microscopy (CLSM) and a series of electrochemical techniques were applied to study the corrosion prevention effect. The electrochemical and pitting results indicated thatT. mesophilumD-6 displayed a better corrosion protection effect.T. mesophilumD-6 formed a denser and thicker biofilm on the Q235 surface thanBacillussp. Y-6. The maximum thickness of theT. mesophilumD-6 biofilms was 11.6 ± 0.7 μm, which is about twice as thick than that ofBacillussp. Y-6. The corrosion prevention mechanism was ascribed to the formation of biofilms as a barrier to block corrosive agents such as O2. This study provides a theoretical foundation for the application of biofilms as green and effective corrosion inhibitors for carbon steel.Keywords:Q235 carbon steel;Tenacibaculum mesophilumD-6;Bacillussp. Y-6;corrosion inhibition;biofilm formation ability
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DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2023
·Vol. 58
·期 15
·6743-6756
·
IF 4.5
Zhou Huan,Wang Jie,Yang Bing,Sun Manna,Liang Chunyong,Yang Lei,Zhao Xiaoyan,Wang Hongshui
In this work, near-infrared light responsive upconversion nanoparticles TiO 2 /(Ca,Y)F 2 :Tm,Yb were hydrothermally prepared for tumor control. Moreover, femtosecond laser was adopted to reduce particle size and aggregation of TiO 2 /(Ca,Y)F 2 :Tm,Yb, as a strategy to enhance its dispersity. In vitro studies of the biocompatibility and tumor control efficacy of TiO 2 /(Ca,Y)F 2 :Tm,Yb were carried out via co-culturing human pancreatic carcinoma cells (CFPAC-1). It was found in the absence of near-infrared light, TiO 2 /(Ca,Y)F 2 :Tm,Yb showed no toxicity to CFPAC-1 cells. On contrast, when exposed to near-infrared light, particles exhibited irradiation time, irradiation interval and particle concentration dependent suppression of CFPAC-1 cells proliferation along with portion of S phase cells increase. A nude mouse model with CFPAC-1 cells injection was established and TiO 2 /(Ca,Y)F 2 :Tm,Yb was subsequently applied for in vivo tumor control. A 15 days tracking confirmed the antitumor capability of near-infrared light excited TiO 2 /(Ca,Y)F 2 :Tm,Yb. Overall, we anticipate that the here-introduced TiO 2 /(Ca,Y)F 2 :Tm,Yb can serve as an effective agent for photodynamic antitumor therapy. Graphical Abstract
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DOI
高影响因子
BIOSENSORS & BIOELECTRONICS
·
2023
·
IF 12.6
Bo Liu,Yonghao Ge,Yahui Lu,Yibo Huang,Xiaoru Zhang,Xunyi Yuan
This work develops a novel photoelectrochemical sensor for the detection of carcinoembryonic antigen (CEA) based on the composite of UCNPs with semiconductors and conformational changes in the DNA structure . Firstly, SnS 2 , ZnIn 2 S 4 and UCNPs were assembled on the surface of the ITO electrode. Then Au NPs were dropped, which could facilitate the coupling of CdSe NPs modified DNA1 via Au–S bond, giving an ITO/SnS 2 /ZnIn 2 S 4 /UCNPs/CdSe heterojunction structure. When irradiated with 980 nm near-infrared (NIR) light, the UV–visible light emitted by the UCNPs could excite the nanocomposite , producing an enhanced photoelectric reaction. Subsequently, CEA aptamer and DNA2-modified SiO 2 were added to form a Y-shaped DNA structure. At this time, the photocurrent was significantly reduced by the combination of the light-blocking effect of SiO 2 and the departure of CdSe NPs from the electrode surface . When the target CEA was added, the recognition between CEA and the aptamer led to the collapse of the Y-shaped DNA structure, the restoration of hairpin DNA and the proximity of CdSe to the electrode. Accordingly, the photocurrent signals enhanced again. Under optimal experimental conditions, the detection limit as low as 0.3 pg mL −1 was obtained with good selectivity , achieving a sensitive “on-off-on” photoelectrochemical sensor for CEA detection.
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DOI
PubMed
高影响因子
TALANTA
·
2022
·
IF 6.556
Wenxin Cui,Zhaoqing Cai,Qing Li,Haiyun Qu,Jiaqian Zheng,Dengguang Yu,Junfeng Chen,Zheng Wang
In this study, a laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) method for in-situ determination of yttrium and trace elements in yttrium-doped barium fluoride (BaF 2 : Y) crystals was proposed. A facile, micro-damage procedure for quantifying the segregation coefficient of doping elements was investigated, and it was found that the actual yttrium doping concentration increases from the seed end to the tail end in BaF 2 : Y crystals. In micro-area analysis, this method has higher mass sensitivity which was applied to quantify the impurity content and distribution during the growth of BaF 2 : Y crystals. Regression coefficient of calibration curve for each element ranged from 0.9918 to 0.9995. Detection limits (DLs) were 0.05, 0.03, 0.01 and 0.01 μg g −1 for Mg, Zn, Sr and Pb, respectively. The accuracy of the proposed method was verified by inductively coupled plasma mass spectrometry/atomic emission spectroscopy (ICP-MS/AES) with wet-chemical pretreatment. The objective of the presented work was to provide a less damaging and more novelty approach for crystal sample analysis.
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DOI
PubMed
高影响因子
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