JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
·
2025
·
IF 6.2
Xincheng Cai,Junjing Duan,Zhangyi Huang,Lexing Liang,Zhenyu Zhang,Mao Deng,Jianqi Qi,Tiecheng Lu
Y 2 O 3 MgO composites have emerged as promising mid-infrared (MIR) materials owing to their exceptional broadband transmittance and remarkable thermal stability at elevated temperatures. Nevertheless, the presence of uncontrollable absorption bands within the 4–7 μm spectral range, compromises their optical performance in advanced MIR systems. To address this limitation, we systematically investigated annealing as a strategic approach for modulating defect chemistry in oxide composites. In this paper, the absorption peaks of Y 2 O 3 MgO composites were controlled by varying the annealing conditions. As the annealing temperature increases from 600 °C to 1100 °C, the absorption peaks of Y 2 O 3 MgO composites gradually shift from ∼4.9 μm to ∼6.8 μm, with a transition temperature ∼900°C. This behavior is attributed to the oxidation of metal-organic coordination (MOC) to CO 3 2- in high-temperature air. Ultimately, Y 2 O 3 MgO composites featuring controllable absorption peaks were obtained, demonstrating a transmittance of ∼81 % at 7 μm - the highest value ever reported for this composite system, which broadens the potential application space, particularly in fields requiring mid-infrared transparency such as gas detection, materials characterization, and biomedical imaging. This study not only elucidates specific strategies for enhancing the performance and microstructure of Y 2 O 3 MgO composites but also furnishes reliable methodologies and datasets to support the annealing processes of other material systems.
研究领域:
材料科学
·
光学材料
·
陶瓷
·
红外技术
·
固态化学
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2019
·
IF 3.45
Yihang Fang,Nan Chen,Guoping Du,Mengxian Zhang,Xianrui Zhao,Jianbo Wu
The aim of this study was to improve the mechanical properties of Al 2 O 3 ceramics by the addition of Y 2 O 3 -stabilized ZrO 2 whiskers (designated as Al 2 O 3 /YSZ W composite) through the flux method and hot-pressing technology. The effect of YSZ W content on their microstructure , phase composition and transformability, mechanical properties, and wear resistance was systematically investigated. The Al 2 O 3 /YSZ W composites containing 10 wt% YSZ W exhibited the best mechanical performance, including the highest content of YSZ W tetragonal phase and transformability as well as the largest values in their relative density (99.5%), hardness (1969 HV), fracture toughness (9.57 MPa m 1/2 ) and flexural strength (855 MPa). The strengthening and toughening of the Al 2 O 3 /YSZ W composites were attributed to the YSZ W tetragonal-monoclinic phase transformation as well as the whiskers reinforcing effect. Furthermore, the Al 2 O 3 /YSZ W composites also showed the highest friction and wearing properties.
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
Nanomaterials
·
2020
·Vol. 10
·期 8
·1475
·
IF 4.324
Xiaofan Zhao,Zeyun Wu,Zining Yang,Xu Yang,Yiyang Zhang,Maohui Yuan,Kai Han,Changqing Song,Zongfu Jiang,Hongyan Wang,Shuiqing Li,Xiaojun Xu
Er3+-sensitized upconversion nanoparticles (UCNPs) have attracted great attention due to their tunable upconversion (UC) emissions, low cytotoxicity, high resistance to photobleaching and especially multiple effective excitation wavelengths. However, detailed energy conversion between Er3+and Tm3+ions in Y2O3UCNPs is still a problem, especially under multi-wavelength and variable pulse width excitation. In this work, we successfully fabricated a series of Er3+-sensitized Y2O3nanocrystals by a spray flame synthesis method with a production rate of 40.5 g h−1. The as-prepared UCNPs are a pure cubic phase with a mean size of 14 nm. Excited by both 980 and 808 nm lasers, the tunable upconversion luminescence (UCL) from Er3+ions was achieved by increasing the Er3+doping concentration, co-doping Tm3+ions and extending excitation pulse-width. The investigations of the lifetimes and the laser power dependence of UC emissions further support the proposed mechanism, which provides guidance for achieving effective color control in anticounterfeiting and multiplexed labeling applications. In addition, the red UC emission at about 5 mm beneath the tissue surface was observed in an ex vivo imaging experiment under the excitation of 808 nm laser, indicating that the Y2O3:Er3+/Tm3+UCNPs have great prospects in further biological applications.Keywords:multicolor tuning;dual-wavelength excitation;upconversion luminescence;spray flame synthesis;Y2O3nanocrystal;biological applications
研究领域:
材料科学
·
光学
·
生物医学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CERAMICS INTERNATIONAL
·
2025
·
IF 5.6
Rencong Geng,Tingye Fan,Ping Yang,Wenlei Jia,Ju Zhou,Mingwei Li,Wenhan Qi,Shiqi Li,Jiao Han,Yiming Zeng
Si 3 N 4 ceramics are highly valued for their exceptional thermal conductivity and mechanical properties. This study investigated the effects of different addition ratios of Y 2 O 3 -MgO-MgSiN 2 ternary sintering additives on liquid phase viscosity, densification, microstructure, thermal conductivity and mechanical properties. The incorporation of MgSiN 2 as sintering additives introduced additional Si and N into the liquid phase, forming a nitrogen-rich liquid phase that promoted the grain growth showing a bimodal distribution. When the MgO/MgSiN 2 ratio reached 2/3, the moderate liquid phase viscosity facilitated enhanced densification and grain growth. This resulted in an increased number of large grains, a moderate grain size distribution, and a good bimodal microstructure. Consequently, the 2M3N exhibited superior properties, including a thermal conductivity of 105.22 W m −1 K −1 , a fracture toughness of 5.91 MPa m 1 / 2 , and a bending strength of 726.12 MPa. The study demonstrates that precise control of the Y 2 O 3 -MgO-MgSiN 2 ratio can effectively regulate the microstructure, leading to improved thermal and mechanical performance.
研究领域:
材料科学
·
陶瓷
·
热性能
·
机械工程
✓ 已验证
产品关联
DOI
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2021
·
IF 19.503
Yingying Li,Yong Men,Shuang Liu,Jinguo Wang,Kang Wang,Yuhan Tang,Wei An,Xiaoli Pan,Lin Li
Citric acid has been investigated for preparing the highly dispersed nickel catalysts on Y 2 O 3 support. A highly enhanced methanation activity with the high CO 2 conversion of 92 % and CH 4 selectivity of 100 % was obtained over Ni/Y 2 O 3 with optimum addition of citric acid at 350 °C. The citric acid additives during the preparation are found to influence the size of nickel nanoparticles and the interaction of metal and support, as estimated by various techniques, which, in turn, to correlated with the catalytic performance. In situ DRIFTS spectra further indicate the importance of small Ni particles on formation of carbonates and formate species as key intermediates and the subsequent hydrogenation of those species into methane. This study proposes that the Y-O-Ni interfacial structure formed by the strong Ni and Y 2 O 3 interaction at high citric acid addition is of prime importance for the formation of methane, benefiting from the more abundant basic sites and metallic Ni to enable CO 2 activation and hydrogenation of key intermediates by effective H 2 dissociation respectively. This work provides a new design strategy for developing highly efficient composite CO 2 methanation catalysts by control of the metal particle size and charge transfer via metal/support interface.
研究领域:
催化化学
·
化学工程
·
材料科学
·
环境化学
✓ 已验证
DOI
高影响因子
SCIENCE OF THE TOTAL ENVIRONMENT
·
2024
·
IF 8.2
Ziwei Chen,Jia Liu,Manjia Zheng,Minhua Mo,Xiaowen Hu,Chang Liu,Janak Lal Pathak,Lijing Wang,Liangjiao Chen
Yttrium oxide nanoparticles (Y 2 O 3 NPs), extensively utilized rare earth nanoparticles, exhibited a diverse range of applications across various fields, which leading to increased human exposure. Moreover, potential neurotoxic risks have been associated with their use, yet the underlying mechanism remains unclear. The present study aimed to investigate the effects of Y 2 O 3 NPs on cognitive function in rats with a particular focus on elucidating the pivotal role played by astrocytes in this process. The results demonstrated that Y 2 O 3 NPs induced cognitive and memory impairment in rats, copper (Cu) accumulation and cuproptosis of astrocytes as contributing factors. Furthermore, we elucidated that Y 2 O 3 NPs induced astrocytes cuproptosis by inhibiting TRIM24/DTNBP1/ATP7A signaling pathway-mediated cellular Cu efflux. We provide, for the first time, the important involvement of astrocytes in Y 2 O 3 NPs-induced neurotoxicity, elucidating that cuproptosis as the primary mode of cell death. These results offer valuable insights for the future safe application of rare earth nanoparticles in field of neurology.
研究领域:
神经科学
·
毒理学
·
纳米技术
·
细胞生物学
✓ 已验证
DOI
PubMed
高影响因子
CERAMICS INTERNATIONAL
·
2024
·
IF 5.1
Xincheng Cai,Junjing Duan,Zhangyi Huang,Zhenyu Zhang,Shengquan Yu,Xiaoqiang Li,Jianqi Qi,Tiecheng Lu
Y 2 O 3 -MgO composites are promising for mid-infrared windows and domes in harsh environments. However, the insufficient transmittance range (the transmittance >30 % only in ∼2–7 μm) and strong absorption peak (the transmittance <32 % at 7.0 μm) of Y 2 O 3 -MgO composites severely limit their application range because of agglomerations and carbon contamination from organics in the raw materials, currently. In this study, utilizing carbon-free raw materials and high molecular motions, the reduction of carbon contamination and agglomerations within the as-synthesized nanopowers was achieved via the modified co-precipitation synthesis. A highly mid-infrared transparent (the maximum transmittance of 79 % at 6.0 μm) Y 2 O 3 -MgO composite with wide transmittance range (the transmittance >30 % in 2.2–9.7 μm) and weak absorption peaks (the transmittance ≈68.57 % at 7.0 μm) was fabricated by the hot-pressing sintering method using the as-obtained nanopowders in the absence of exogenous dopants. And the modified co-precipitation synthesis is a method with great potential for the development of mid-infrared transparent Y 2 O 3 -MgO composites with wide transmittance range and weak absorption peaks.
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
INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS
·
2022
·
IF 4.804
Chen Chao,Mo Peicheng,Chen Jiarong,Hu Xixi,Hu Qiaofan,Lin Feng,Wu Yi
Using TiN-Ti-AlN as the binder, polycrystalline cubic boron nitride (PCBN) composites containing Y 2 O 3 and not containing Y 2 O 3 were prepared under high temperature and ultra-high pressure conditions, respectively. X-ray diffraction (XRD) and scanning electron microscope (SEM) were used to analyze the phase composition, microstructure and surface crack morphology of the composite material. At the same time, the compactness, microhardness and bending strength of the composite material were tested. The research results show that the phase composition of PCBN sample is mainly composed of BN, TiB 2 , TiN, AlN and Y 2 O 3 at an ultra-high pressure of 5.5 GPa and a temperature of 1500 °C. With the increase of Y 2 O 3 content, the relative density of PCBN first increases and then decreases, and the changes in mechanical properties also tend to be similar. As the content of Y 2 O 3 increases, it can be seen that the peak intensity of the main peak of TiB 2 also increases, indicating that the addition of Y 2 O 3 promotes the reaction between cBN and Ti. When the Y 2 O 3 content is 3.6%, PCBN has the best comprehensive mechanical properties, with a microhardness of 34.56 GPa and a bending strength of 890 MPa.
研究领域:
材料科学
·
机械工程
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Houlin Cheng,Jingxuan Li,Pengcheng Wang,Youzu Xu,Zhiyang Zhang,Qian Feng,Hurong Yao,Zhigao Huang,Jiaxin Li
This work utilized Y 2 O 3 and rGO as additives, and systematically regulated their spatial distribution and composite ratio with Na 3 V 2 (PO 4 ) 3 (NVP) to overcome the bottlenecks faced by NVP, such as intrinsically low electronic conductivity, severe interfacial side reactions, and structural instability during cycling. The modified NVP cathode can significantly enhance its electrochemical performance, and improve its sodium storage and thermal safety performance in the pouch-type full cell. The as-prepared NVP@Y 2 O 3 @rGO material achieves an 84 % capacity retention rate after 1000 cycles at 1C&27 °C, while still delivering a specific capacity of 49.6 mAh g −1 at an ultra-high rate of 30C. Under elevated temperature of 45 °C, it maintains 91.5 % capacity retention after 400 cycles at 1C. In contrast, the pristine NVP retains only 38.2 %. Moreover, it exhibits a reversible capacity of 63.6 mAh g −1 even at an ultra-high rate of 40C. More importantly, pouch-type full cell testing further confirms its superior cycling stability (60.8 % capacity retention after 100 cycles, representing a 30.5 % improvement over the unmodified sample). Mechanistic studies reveal that the combined effects of Y 2 O 3 and rGO effectively facilitate electron/ion transport, suppress electrode-electrolyte interfacial side reactions, mitigate volume change stress, and enhance structural integrity. This work offers new insights for designing high-stability cathode materials for sodium-ion batteries.
研究领域:
材料科学
·
电化学
·
能源存储
·
无机非金属材料
·
固态化学
·
纳米复合材料
✓ 已验证
产品关联
DOI
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2018
·
IF 3.141
Donglin He,Changlei Qin,Zonghao Zhang,Shuai Pi,Jingyu Ran,Ge Pu
The control of anthropogenic CO2 emissions has attracted worldwide attention because of global warming. Among diverse carbon capture technologies, calcium looping (CaL) is proposed as a favorable approach for postcombustion CO2 mitigation. However, the sorbents’ capacitive loss with increased CaL cycling has severely limited the efficient application of the method. Therefore, obtaining sintering-resistant Ca-based sorbents with high capture capacity, fast capture kinetics, and superior stability is considered a research priority. Here, we reported our latest work on the development of a novel Y2O3/MxOy-modified Ca-based sorbent with superior CO2 sorption performance. Y20/Mg20, i.e., synthetic Ca-based sorbents with Y and Mg incorporated at the mass ratio of 1:1, achieved a significantly high conversion (above 90%) in 20 CaL cycles at a typical calcination temperature (∼900 °C) and was stabilized at the CO2 uptake of 0.311 g of CO2/g of sorbent even after 122 CaL cycles. A comprehensive investigation revealed that the outstanding performance arose from the characteristics of (1) superior surface area and pore volume, provided by pores with radii of <20 nm, (2) a gradually formed skeleton-type structure, and (3) a porous internal structure with a homogeneous distribution of Y2O3 and MgO nanoparticles.
研究领域:
环境科学
·
化学工程
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
APPLIED CATALYSIS A-GENERAL
·
2022
·
IF 5.723
Meng Zhang,Junfeng Zhang,Qingde Zhang,Yizhuo Han
The surface reactive oxygen species over Y 2 O 3 -ZrO 2 supports were tuned by regulating the interaction between Y and Zr via modulating the zirconium precursors. It was revealed that the content of the surface adsorbed oxygen species (SAOS) over the catalyst with ZrO 2 precursor was the highest, followed by the catalysts with Zr(OH) 4 and ZrO(NO 3 ) 2 ·2H 2 O precursors. The difference of the Y-Zr interaction influenced the reactive oxygen species and the support structure and morphology. However, Ni dispersion was determined by the existence of the isolated Y 2 O 3 due to the enhanced metal-support interaction. High Ni dispersion and abundant surface adsorbed oxygen species were beneficial to promote CH 4 and CO 2 reactivity. Nevertheless, CH 4 dissociation facilitated by the SAOS was more remarkable than CO 2 activation at low temperature. Thus, the improvement of the SAOS on carbon-resistant ability of the catalyst was only achieved at high temperature through balancing the carbon formation and elimination.
研究领域:
催化化学
·
材料科学
·
能源化学
✓ 已验证
产品关联
DOI
高影响因子
MOLECULES
·
2023
·Vol. 28
·期 5
·2189
·
IF 4.6
Yunqing Zhu,Bingqing Li,Yongming Wang,Tian Wang
Electrocatalytic oxidation (ECO) has attracted attention because of its high efficiency and environmental friendliness in water treatment. The preparation of anodes with high catalytic activity and long service lifetimes is a core part of electrocatalytic oxidation technology. Here, porous Ti/RuO2-IrO2@Pt, Ti/RuO2-TiO2@Pt, and Ti/Y2O3-RuO2-TiO2@Pt anodes were fabricated by means of modified micro-emulsion and vacuum impregnation methods with high porosity titanium plates as substrates. The scanning electron microscopy (SEM) images showed that RuO2-IrO2@Pt, RuO2-TiO2@Pt, and Y2O3-RuO2-TiO2@Pt nanoparticles were coated on the inner surface of the as-prepared anodes to form the active layer. Electrochemical analysis revealed that the high porosity substrate could result in a large electrochemically active area, and a long service life (60 h at 2 A cm−2current density, 1 mol L−1H2SO4as the electrolyte, and 40 °C). The degradation experiments conducted on tetracycline hydrochloride (TC) showed that the porous Ti/Y2O3-RuO2-TiO2@Pt had the highest degradation efficiency for tetracycline, reaching 100% removal in 10 min with the lowest energy consumption of 167 kWh kg−1TOC. The reaction was consistent with the pseudo-primary kinetics results with a k value of 0.5480 mol L−1s−1, which was 16 times higher than that of the commercial Ti/RuO2-IrO2electrode. The fluorospectrophotometry studies verified that the degradation and mineralization of tetracycline were mainly ascribed to the •OH generated in the electrocatalytic oxidation process. This study thus presents a series of alternative anodes for future industrial wastewater treatment.
研究领域:
环境科学
·
材料科学
✓ 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）