ACS Biomaterials Science & Engineering
·
2025
·
IF 5.5
Chenyang Zhang,Chenghui Qian,Guang Yang,Yiying Zhu,Binbin Kang,Xiaohong Chen,Si Chen
Adding metal ions is a promising strategy to enhance the biological performance of titanium implants. In this study, we aimed to explore the effects of yttrium on the osseointegration of titanium implants. First, a series of yttrium-doped titanium surfaces were fabricated via microarc oxidation (MAO) by incorporating yttrium acetate into the electrolyte, and then the surface characteristics of different substrates were evaluated. Subsequently, the cellular behaviors of different coatings were assessed, and the osteointegration effects were examined using a rat model. Finally, high-throughput sequencing was employed to elucidate the underlying mechanisms of the yttrium-doped MAO coatings. As the results indicated, the proportion of yttrium in the coatings increased as the concentration of yttrium acetate improved. Surface characterization revealed that the yttrium-doped MAO coatings exhibited a homogeneous porous morphology, with comparable roughness and wettability to those of the undoped MAO coating, while the morphology became inconsistent when the yttrium acetate concentration reached 30 mM. The in vitro assays demonstrated that the addition of yttrium notably improved the cell adhesion, spreading, proliferation, and osteogenic differentiation of MAO coatings when doped with a low proportion, accompanied by enhanced osseointegration according to the in vivo experiments. Further exploration revealed a significant enrichment of osseointegration-related signaling factors and the activation of BMP/Smad signaling in the effects of yttrium-doped titanium coatings, which was attributed to the excessive accumulation of phosphorylated Smad1/5/9 in the nucleus. In summary, our work demonstrates that the use of MAO coatings doped with a low proportion of yttrium can enhance the osseointegration of titanium implants, providing an efficient strategy to optimize titanium implant performance.
研究领域:
生物材料学
·
组织工程学
·
医学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2024
·
IF 5.8
Yangbo Wang,Yue Pan,Yufei Ma,Xinying Sun,Yaqi Zhang,Huaiyong Li
Lanthanide upconversion luminescent materials featuring multi-peak and tunable emissions allow for ratiometric luminescence thermometry in a remote detection manner. However, wide explorations are still required to develop relevant materials for efficient thermometric performances. Herein, Yb 3+ /Er 3+ co-doped non-stoichiometric analogues of bismuth oxyfluoride were obtained by simply tuning the F − /(Bi 3+ + Ln 3+ ) molar ratio of the reactants in a solid-state reaction method, for the first time. We achieved simultaneous regulations in composition , structure, morphology, and upconversion luminescence properties of BiO x F y :Yb/Er (2/1 mol%) microcrystals . Compositional analysis revealed not only the predictable increase of fluorine content, but also the constant O/(Bi + Ln) atomic ratios in all nominal BiO x F y :Yb/Er. Experimental results showed the structure and morphology evolutions from hexagonal-phase micro-flowers, to tetragonal-phase microplates , and further to orthorhombic-phase irregular microcrystals . Benefiting from adjustable composition, structure and morphology, up-conversion luminescence with adjustable intensity and color was obtained. Temperature dependent upconversion properties and ratiometric thermometric performances based on the thermally coupled levels, 2 H 11/2 and 4 S 3/2 of Er 3+ , were explored. BiOF:Yb/Er, BiO 0.67 F 1.66 :Yb/Er, and BiF 3 :Yb/Er microcrystals were found as suitable temperature sensing candidates with operating temperature range as wide as 298−673/723 K, high relative sensitivity up to 1.24% K -1 , and minimum temperature uncertainty of 0.15 K. These results benefit not only further explorations for high-performance lanthanide-based luminescence thermometers, but also the chemistry of fluorides made from the solid-state reaction method.
研究领域:
材料科学
·
无机化学
·
光学
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Tengyu Zhang,Meijia Liu,Can Li,Jiwei Zhang,Hui Gao,Fangong Kong,Xuezhang Xiao
Magnesium hydride (MgH 2 ) emerges as a cost-effective and high-capacity hydrogen storage candidate. Despite these advantages, its utilization is constrained by sluggish reaction kinetics and the requirement for elevated operating temperatures. In this study, we aim to address these limitations by investigating the synergistic catalytic effect of yttrium fluoride (YF 3 ) and nickel-loaded nitrogen self-doped porous carbon (Ni/C) as catalysts for MgH 2 . Co-doping with YF 3 and Ni/C reduces the dehydrogenation activation energy to 74.56 kJ/mol, enabling 5.22 wt% H 2 desorption within 5 min at 300 °C. Notably, the system exhibits enhanced low-temperature reaction kinetics, with the MgH 2 -YF 3 + Ni/C composite releasing 5.74 wt% H 2 at 250 °C within 30 min. At 50 °C, the co-doped composite achieves a hydrogen storage capacity of 5.18 wt% within 4 h, whereas the composite with Ni/C only absorbs 3.72 wt% H 2 . Moreover, the MgH 2 -YF 3 + Ni/C shows 98.4 % capacity retention after 30 cycles, indicating excellent reversibility. Mechanistic analysis reveals that the outstanding catalytic performance originates from the synergistic effect among YH 2 /YH 3 , MgF 2 , Mg 2 Ni/Mg 2 NiH 4 , and nitrogen-doped carbon. YH 2 /YH 3 and Mg 2 Ni/Mg 2 NiH 4 act as “hydrogen pump”, providing more active sites for the reaction. Additionally, MgF 2 functions as an electron transfer medium, weakening the Mg-H bond. The introduction of nitrogen self-doped porous carbon improves the dispersion of the catalyst and prevents aggregation, enhancing the dissociation of hydrogen molecules. This work demonstrates a promising strategy for improving the low-temperature hydrogen storage performance of MgH 2 and offers insights into the design of rare-earth fluoride-based catalysts.
研究领域:
材料科学
·
能源化学
·
催化化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Shen Zhou,Zhoufu Wang,Zhenghuang Quan,Hao Liu,Yan Ma,Pingtao Fang,Chao Shu
Yttrium oxide is extensively utilized in high-temperature industries due to its excellent vacuum and high-temperature chemical stability. However, its applications are limited by poor thermal shock resistance, which arises from its intrinsic brittleness. The ferroelastic toughening phase LaAlO 3 offers significant fracture toughness, which is attributed to the ferroelastic domain-switching toughening effect. This study focuses on enhancing the properties of yttrium oxide using Y 2 O 3 , La 2 O 3 , and Al 2 O 3 fine powders as primary raw materials. Y 2 O 3 /LaAlO 3 composite materials are developed, and the LaAlO 3 phase is formed in situ within the Y 2 O 3 matrix. The effects of varying in situ-synthesized LaAlO 3 content on the phase composition, microstructure, mechanical properties, and thermal shock resistance of Y 2 O 3 /LaAlO 3 composite materials are investigated. The key findings are as follows: 1) The use of a Y 2-x La x O 3 solid solution, instead of pure yttrium oxide, as the matrix allows for the synthesis of the LaAlO 3 phase in situ within the matrix. This approach enables the coexistence of LaAlO 3 and yttrium oxide, resolving the issue of chemical compatibility between Y 2 O 3 and LaAlO 3 . 2) The solid solution effect of the Y 2-x La x O 3 matrix and the ferroelastic toughening effect of the LaAlO 3 phase collectively enhance the material performance. The addition of an appropriate amount of LaAlO 3 improves the sintering performance, strength, hardness, and toughness of yttrium oxide. These enhancements significantly improve the thermal shock stability of yttrium oxide materials. 3) The excessive formation of the in situ LaAlO 3 phase, driven by the LaAlO 3 reaction expansion effect, negatively impacts the sintering performance and toughness of yttrium oxide materials, thereby compromising their thermal shock stability. To address this issue, an optimal amount of in situ LaAlO 3 phase should be incorporated to achieve a balance between toughness and thermal shock stability in Y 2 O 3 /LaAlO 3 composite materials while preserving their hardness and strength.
研究领域:
材料科学
·
陶瓷工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2016
·
IF 3.014
Shanshan Li,Binglong Liu,Jiang Li,Xingwen Zhu,Wenbin Liu,Yubai Pan,Jingkun Guo
Yttria (Y 2 O 3 ) nano-powders were synthesized by the normal-strike precipitation method. The influences of R (NH 4 HCO 3 /M 3+ , molar ratio) and ammonium sulfate addition were studied throughout the preparation process. Several analytic techniques such as XRD , TG/DSC, SEM and FTIR were used to determine the characteristics of the precursors and Y 2 O 3 powders. It was found that morphologies and phases of the precursors were evidently influenced by the R value. The phases of the precursors were Y 2 (CO 3 ) 3 ·2.79H 2 O when R was 3–4, while the composition of the precursors with R = 4–5 was (NH 4 ) a Y(OH) b (CO 3 ) c ·xH 2 O. Homogeneous needle-flake shaped particles composed of coadjacent grains with diameters of about 70 nm were obtained as the R = 3–4. The rhombohedral flake-shaped particles were the products with R = 5–6. The mechanism of the influence of R value on the precipitation of the precursor was also investigated in this work. Pure Y 2 O 3 nano-powders were obtained by calcining the precursors at 1000 °C for 4 h regardless of what the R value was. Sulfate ions affect not only dispersion of nanopowders, but also their grain size. Results obtained in this work are contributed to the controllable synthesis of yttria powders.
研究领域:
材料科学
·
化学工程
✓ 已验证
DOI
高影响因子
INORGANIC CHEMISTRY
·
2025
·
IF 4.7
Xinyu He,Zongqing Jin,Guanjun Xiao,Bo Zou,Qingqin Ge,Nannan Shi,Liwei Jiang,Cheng Sun,Tao Xiong,Yinan Zhang
To circumvent the toxicity problem of lead, looking out for lead-free perovskites with a broadband emission and associated LEDs that cover the full region of white light is the key to research in sustainable chemistry and material community. In order to improve the luminescence properties of inorganic lead-free perovskites, chemical doping engineering is utilized. We have found that yttrium plays an important role as a dopant in broadening the emission of inorganic perovskites. This work reports on white light emission in a yttrium-doped tin perovskite and the white LED synthesized with this eco-friendly phosphor. The hue of the light can be adjusted via the change in the excitation wavelength. DFT is performed to calculate the band gaps, and a good agreement with the experimental results is illustrated. The dramatic fluorescence enhancement (by a factor of about 4.5) is also revealed on the phosphor. Based on this sustainable material, a WLED is fabricated, and a full-color white light emission is realized with a CIE of (0.32, 0.33). This work not only provides us with an inorganic phosphor for white LEDs but also demonstrates the potential of the chemical doping strategy in sustainable chemistry and materials science.
研究领域:
材料科学
·
化学工程
·
光学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Nature Communications
·
2025
·Vol. 16
·期 1
·1-12
·
IF 15.7
Liu Shujie,Zhang Zhiguo,Dastafkan Kamran,Shen Yan,Zhao Chuan,Wang Mingkui
Active and stable electrocatalysts are essential for hydrogen production from alkaline water electrolysis. However, precisely controlling the interaction between electrocatalysts and reaction intermediates (H 2 O*, H*, and *OH) remains challenging. Here, we demonstrate an yttrium-doped NiMo-MoO 2 heterogenous electrocatalyst that efficiently promotes water dissociation and accelerates the intermediate adsorption/desorption dynamics in alkaline electrolytes. Introducing yttrium into the NiMo/MoO 2 heterostructure induces lattice expansion and optimizes the d -band center of NiMo alloy component, enhancing water dissociation and H* desorption. Yttrium doping also increases the concentration of oxygen vacancies in MoO 2−x , which in turn accelerates the charge kinetics and the swift evacuation of *OH intermediates from the active sites. Consequently, the Y-NiMo/MoO 2−x heterostructure exhibits notable performance by requiring only 189 and 220 mV overpotentials to achieve current density of 2.0 A cm −2 in alkaline water and seawater, respectively. This work provides a strategy to modulate heterostructure catalysts for scalable, economically viable hydrogen production from low-quality waters.
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
Nanoscale
·
2024
·Vol. 16
·期 36
·16933-16941
·
IF 5.8
Xinyu Feng,Siwen Zhang,Jiazhuo Li,Yingfang Hu,Rongyuan Ge,Yaowen Shi,Yali Yao,Bosi Yin,Tianyi Ma
Ni3(NO3)2(OH)4 has a high theoretical specific capacitance, low cost, and environmental friendliness, making it a promising electrode material. Specifically, Ni3(NO3)2(OH)4 electrodes have a larger layer spacing (c = 6.898 Å) than Ni(OH)2 electrodes since NO3− has a much larger ionic radius than OH−. The larger layer spacing stores more electrolyte ions, significantly improving the electrochemical activity of the electrodes. Additionally, the interlayer NO3− can enhance the structural stability of Ni3(NO3)2(OH)4. However, since Ni3(NO3)2(OH)4 has a higher molar mass than Ni(OH)2, it has a lower theoretical specific capacity. Consequently, Ni3(NO3)2(OH)4 has not been used in zinc-based alkaline batteries. Studies showed that doping could enhance the electrochemical performance of electrode materials. Therefore, this study used a simple solvothermal reaction to synthesize yttrium-doped Ni3(NO3)2(OH)4 (Y-Ni3(NO3)2(OH)4), assembling a Y-Ni3(NO3)2(OH)4//Zn battery for electrochemical testing. Y-Ni3(NO3)2(OH)4 served as the cathode in the battery. The analysis of Y-Ni3(NO3)2(OH)4 showed that yttrium (Y) doping increased the specific surface area and pore size of Ni3(NO3)2(OH)4 significantly. The increased specific surface area improved the active material utilization, and the abundant mesopores facilitated OH− transport, substantially enhancing the battery's specific capacity and energy density. Ultimately, the specific discharge capacity of the advanced Y-Ni3(NO3)2(OH)4//Zn battery reached 177.97 mA h g−1 at a current density of 4 A g−1, nearly doubling the capacity of the earlier Ni3(NO3)2(OH)4//Zn battery (103.59 mA h g−1).
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
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
·
2025
·
IF 3.8
Zijun Li,Shuo Wang,Mengqing Zhang,Jiayi Zheng,Tong Zhang
With the rapid development of laser technology, the safety of human and equipment is increasingly threatened by high-power laser. However, there are not any high-power laser protection materials without flame and smoke during irradiation. In this study, we investigated a series of RE 2 Ti 2 O 7 (RE = Y, La, Sm, Eu, Yb) ceramics with high reflectivity and low thermal conductivity and evaluated their laser ablation behaviors. The results showed that all RE 2 Ti 2 O 7 have high reflectivity comparable to that of metals, and their thermal conductivity is lower than 8YSZ. Laser ablation results showed all coatings were intact after irradiation under 500 W/cm 2 for 10 s. Even after irradiation under 1000 W/cm 2 for 10 s, no significant changes were observed in the Y 2 Ti 2 O 7 and La 2 Ti 2 O 7 coatings. Further exploration determined that the protection threshold of Y 2 Ti 2 O 7 was 84 s while that of La 2 Ti 2 O 7 was 163 s, indicating its superior laser protection capability. In conclusion, La 2 Ti 2 O 7 shows significant potential in high-power laser protection.
研究领域:
材料科学
·
激光技术
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2024
·
IF 5.1
Ying Lv,Ning Zhao,Chaofeng Li,Cunjian Lin,Shihai You
Efficient and stable persistent phosphors play a crucial role in the fields of energy storage, anti-counterfeiting, and biomedical fields. Here, we present an improved synthetic method for preparing a series of color-tunable LiYGeO 4 :Tb 3+ persistent phosphor. The increased Tb 3+ concentration in the improved method enhances the persistent luminescent intensity at 20 s by ∼2.96 times. This enhancement is due to the dual roles of Tb 3+ as both emitters and trap centers within LiYGeO 4 . By simply increasing the doping concentrations, the persistent color can be adjusted from blue to green. LiYGeO 4 :Tb 3+ exhibits no loss of persistent luminescent intensity even after exposure to water at 80 °C for 72 h, surpassing the commercial green persistent phosphor. Furthermore, information storage was successful demonstrated by using LiYGeO 4 :Tb 3+ with various doping concentrations. This study represents a significant advancement in optimizing the properties of persistent luminescent materials, where dopants simultaneously serve as emitters and trap centers.
研究领域:
材料科学
·
光学
✓ 已验证
DOI
高影响因子
INORGANIC CHEMISTRY COMMUNICATIONS
·
2019
·
IF 1.795
Dongfang Hou,Fan Tang,Bingbing Ma,Min Deng,Xiu-qing Qiao,Dong-Sheng Li
A series of BiYO 3 and rare earth doped BiYO 3 nanotubes have been fabricated through a simple and economical electrospinning technique with subsequent calcination for the first time. The average diameter of the nanotube was approximately 200 nm. It is found that the Nd-doped BiYO 3 nanotubes exhibit an excellent multi-functionality of catalytic and visible-light-driven photocatalytic activities , thus the reduction of 4-Nitrophenol and degradation of Congo red can be rapidly achieved. The enhanced activity was attributed to the one-dimensional tube-like architecture, relatively appropriate band gap and Nd doping, which could be favorable for light harvesting, matter diffusion, and carrier transfer. This work may raise more detail research of BiYO 3 and also broaden its application in many fields.
研究领域:
材料科学
·
环境科学
✓ 已验证
DOI
高影响因子
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
·
2019
·Vol. 102
·期 11
·6863-6871
·
IF 3.094
Xiaojun Tan,Shoulei Xu,Xiangyu Wang,Fenhong Liu,Bernard A. Goodman,Dingkang Xiong,Wen Deng
Single crystals of yttria-stabilized zirconia (YSZ) doped with various concentrations of Sm 2 O 3 were synthesized by the optical floating zone method, and their structure and spectroscopic properties characterized using powder X-ray diffraction (XRD), optical absorption, and luminescence measurements. XRD showed that the cubic phase of ZrO 2 was stabilized by addition of Y 2 O 3 and a series of absorption peaks characteristic of Sm 3+ was detected by UV-visible absorption spectroscopy. Three phenomenological J-O oscillator strength parameters Ω t ( t = 2, 4, 6) were calculated to evaluate the local structure and bonding in the vicinity of the Sm 3+ for the 0.75 mol% Sm 2 O 3 : YSZ sample. These were in order of Ω 2 < Ω 4 < Ω 6 with values of Ω 2 = 5.46 × 10 −20 cm 2 , Ω 4 = 10.70 × 10 −20 cm 2 , and Ω 6 = 12.67 × 10 −20 cm 2 , and indicate a relatively high symmetry and low covalent character for the Sm-O bond at the Sm 3+ sites in the YSZ matrix. Photoluminescence spectra recorded under an excitation of 404 nm showed four emission bands centered at 571 nm, 621 nm, 652 nm, and 716 nm corresponding to the transitions 4 G 5/2 → 6 H j ( j = 5/2, 7/2, 9/2, 11/2). The transition probability, lifetime, and branching ratio obtained from the emission spectrum of the 0.75 mol% Sm 2 O 3 : YSZ crystal showed that YSZ is a potential host for Sm 3+ to achieve a reddish-orange laser output, and the Sm 3+ -modified YSZ crystals have a possible use in reddish-orange laser and lighting devices.
研究领域:
材料科学
·
光学
✓ 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）