JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
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2025
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IF 1.6
Gao Yu,Luo Fen,Li Yang,Yang Shangqi,Lu Xirui
In this study, borosilicate glasses with different ZrO 2 contents were synthesized at 1200 °C and used to immobilize simulated TRPO waste. The effects of ZrO 2 content on the solid solution limit, microstructure, mechanical properties, and chemical stability of the solidified bodies were systematically analyzed. The results showed that with the increase of ZrO 2 content, the solid solution limit of TRPO waste increased from 20 to 30 wt%, and the degree of amorphization of the solidified bodies could be improved. The addition of ZrO 2 raised the number of bridging oxygen bonds in the solidified body and enhanced the degree of polymerization of the glass structure. For samples containing 4 wt% ZrO 2 , the highest Vickers hardness and density values were 6.57 GPa and 2.89 g cm −3 . Moreover, the 42-day normalized leaching rates of Ce, Nd, La, and Pr in the solidified bodies were about 10 −5 g m −2 d −1 . This work provides useful ideas for the optimization of the solidification matrix materials for high-level radioactive waste. Graphical abstract
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高影响因子
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
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2024
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IF 3.5
Yongqiang Chen,Mao Chen,Beibei Tang,Guoqi Liu,Hongxia Li,Hailong Wang,Bingbing Fan
A uniform, dense, and well-bonded mullite/Y 2 Si 2 O 7 /ZrO 2 (MYZ) composite barrier coating was synthesized using a spraying technique followed by a two-step sintering process. The microstructure, phase composition, and thermal shock resistance of the MYZ coating were systematically investigated. The sintering process comprised two stages. In the initial stage (25–1350°C), granular mullite grains transformed into columnar crystals with progressive growth. Concurrently, a eutectic composite of mullite and Y 2 Si 2 O 7 formed and dispersed within the grain boundaries, significantly enhancing the coating's density and adhesion. In the subsequent stage (∼1400°C), ZrO 2 reacted with the eutectic composite to produce yttria-stabilized zirconia (YSZ) in situ. The YSZ phase exhibited excellent interfacial compatibility with the substrate, markedly improving the coating's high-temperature stability. As a result, the coating achieved high hardness and a coefficient of thermal expansion matching that of the SiC substrate. Remarkably, the MYZ coating withstood 20 thermal cycles between 25°C and 1200°C without noticeable interfacial damage.
研究领域:
材料科学
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高温材料
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涂层技术
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高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2024
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IF 5.8
Gang Qu,Jingkai Zhou,Dandan Huang
The phase relationships of the ternary system Eu 2 O 3 - La 2 O 3 - ZrO 2 and binary Eu 2 O 3 - La 2 O 3 subsystem were experimentally and thermodynamically studied. Six three-phase fields and nine two-phase ones in the Eu 2 O 3 - La 2 O 3 - ZrO 2 system were investigated by X-ray diffraction, scanning electron microscopy and electron probe microanalysis with wavelength dispersive spectrometer at 1873 K and 1673 K. Nevertheless, there only existed a two-phase region in the Eu 2 O 3 - La 2 O 3 system in the temperature range from 1873 K to 1673 K. After that, the ternary mixing parameters for the system Eu 2 O 3 - La 2 O 3 - ZrO 2 including the binary interaction parameters in the Eu 2 O 3 - La 2 O 3 subsystem are optimized with the CALPHAD (CALculation of PHAse Diagrams) method, based on obtained experimental results. The high-temperature phase relationships and the special type of continuous solid solutions (La 2-x Eu x Zr 2 O 7 ) investigated in present work will contribute to exploring new materials with specific properties such as optical transparency.
研究领域:
材料科学
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热力学
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高影响因子
Inorganic Chemistry Frontiers
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2024
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IF 6.1
Wenlu Zhang,Mengzhe Bao,Mengyao Chen,Wenbin Li,Weilin Xu,Chong He
High-performance aerogel materials hold significant potential for thermal management applications. However, the widespread utilization of conventional ceramic granular aerogels is constrained by their inherent brittleness and rigidity. Herein, an additive blow spinning strategy is introduced for fabricating 3D ZrO2@mullite nanofibrous aerogels with complex morphologies and lamellar structures. A spinnable solution comprising polysiloxane and polyaluminum was synthesized and blow spinning was carried out at a high flow rate, typically ranging from 10 to 30 mL h−1. By incorporating ZrO2 nanocrystals as a reinforcing phase, ZrO2@mullite nanofibers with enhanced mechanical properties are produced through pyrolysis. Utilizing a customized additive spinning strategy, 3D ZrO2@mullite fibrous aerogels with various complex morphologies (such as conical and cubic) and lamellar structures are achieved. Inter-layer spaces of fibrous aerogels can be controlled within 20–100 μm, while the fiber diameter varies in the 0.5–1.5 μm range. These 3D ZrO2@mullite fibrous aerogels showcase remarkable attributes including high compressibility over 60%, high-temperature resistance up to 1300 °C and remarkable bendability of around 360°, and their thermal conductivity remains between 0.01 and 0.026 W m−1 K−1, which paves the way for further advancements in tailored fibrous aerogels.
研究领域:
材料科学
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热能工程
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高影响因子
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
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2024
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IF 2.2
Tang Qin,Li Xiaoping,Liu Guangyin,Zhai Dajun,Shen Jun
Magnesium (Mg) and its alloys face challenges in clinical applications due to their high degradation rates and low antibacterial properties. To overcome these challenges, this study employed an electrolyte containing elements such as F, Ca, P, Si, Sr, and Ag to perform soft spark micro-arc oxidation (MAO) on ZrO 2 –AZ91D Mg alloy. The research encompassed analysis of the MAO process, characterization of the composite coating's phase composition and elemental valence states, measurement of the physicochemical properties of the coating, as well as evaluation of biological properties including cell adhesion, protein adsorption, cytotoxicity, and antibacterial activity. This study investigated the mechanisms underlying osteogenesis and antibacterial effects of co-doped coatings, and examined the influence of bioactive elements on the performance of MAO coatings. The results demonstrated that the co-doped F/Ca/Sr/Ag particle-containing MAO composite coating exhibited excellent wettability and corrosion resistance. Additionally, the coating displayed remarkable protein adsorption capacity, superior adhesion to MC3T3-E1 osteoblast cells, and excellent antibacterial efficacy against Staphylococcus aureus, all while showing negligible toxicity.
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JOURNAL OF MEMBRANE SCIENCE
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2025
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IF 9
Chunyu Fan,Liang Lv,Mengfei Liu,Juanjuan Wen,Jun Feng,Xianfu Chen,Minghui Qiu,Yiqun Fan
A co-sintering route for fabricating ZrO 2 /Al 2 O 3 bi-layer ultrafiltration membranes on quartz supports was proposed. By combining the piezoelectric support and the weak capillary force of transition layer, a thin (∼300 nm), narrowly distributed pore size, and built-in ultrasonic antifouling ultrafiltration membrane was prepared. Considering the mechanical strength of the Al 2 O 3 layer and the interfacial bonding, a co-sintering temperature of 950 °C was selected. Meanwhile, a holding step at 600 °C was introduced to alleviate the thermodynamic mismatch between the two layers caused by the phase transition of the support. The membrane maintained excellent piezoelectric response, along with high flux (366 L·m −2 ·h −1 ·bar −1 ), low roughness (11.6 nm), and small pore size (∼16 nm). The antifouling performance of the piezoelectric ultrafiltration membrane was evaluated through filtration experiments of nano-sized water-in-oil emulsions. The stable permeability of the ultrafiltration membrane was 2.8 times higher than that of the support and further increased by 16.4 % when in situ ultrasound is applied, reaching 0.829 in the stable normalized flux ( J/J 0 ). Additionally, after cleaning, the membrane flux was almost completely restored. The piezoelectric ceramic membranes prepared by this method have great potential for oil-water separation.
研究领域:
材料科学
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膜技术
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环境工程
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陶瓷材料
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分离科学
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CHEMICAL ENGINEERING JOURNAL
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2021
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IF 13.273
Yingqiao Jiang,Gang Cheng,Yuehua Li,Zhangxing He,Jing Zhu,Wei Meng,Lei Dai,Ling Wang
The application of metal oxide is limited due to low conductivity, weak combination, poor dispersion, and hard nanocrystallization in vanadium redox flow battery. Herein, metal–organic framework (MOF) was firstly employed to prepare metal oxide and porous carbon nanocomposite, which was used to ultra-uniformly decorate graphite felt by in-situ growth. Graphite felt was modified with UiO-66 (Zr-MOF) nanoparticle using hydrothermal synthesis followed by conversion into porous nanocomposite (ZrO 2 @C) via high-temperature carbonization. ZrO 2 @C owns large surface area, regular arrangement of ZrO 2 , and high conductivity, which provides large reaction place, high active site density, and rapid electron transfer for redox reaction. Therefore, ZrO 2 @C can boost the electrochemical performance of graphite felt for VO 2+ /VO 2 + and V 3+ /V 2+ reactions by promoting diffusion, charge transfer, and electron transport, systematically. The modified flow cell using ZrO 2 @C/GF has better stability and higher utilization of electrolyte than pristine cell during 500-cycle test. ZrO 2 @C/GF decreases electrochemical polarization of cell at different current densities. At 200 mA cm −2 , voltage efficiency (77.5%) and energy efficiency (75.2%) of modified cell increase by 14.6% and 13.9% respectively compared with pristine cell. The modified cell can operate at a high current density up to 300 mA cm −2 and shows a 62.4% of energy efficiency. The cell performance in this study is superior to that reported in previous metal oxide-related works. This work presents a design allowing MOF-derived catalyst with nano size, high conductivity, good adhesion, and uniform dispersion, simultaneously.
研究领域:
材料科学
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电化学
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高影响因子
ACS Sustainable Chemistry & Engineering
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2026
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IF 7.6
Hong-Mei Jiang,Jian Sheng,Shu-Zhen Zhou,Hang Yao,Fan Tang,Dongqi Wang
Developing high-performance, non-precious-metal catalysts that operate efficiently at low temperatures remains a pivotal challenge for CO2 methanation, particularly for systems with high active metal loadings where nanoparticle sintering often compromises performance. Herein, Mn-promoted Ni/ZrO2 catalysts with 40 wt % Ni were prepared via a Pechini method, demonstrating exceptional low-temperature performance. Under atmospheric pressure, the optimized 5Mn–Ni/ZrO2 catalyst achieved stable 70% CO2 conversion, near-100% CH4 selectivity, and a stable CH4 yield of 150 mmol/g/h for 117 h at 225 °C. Comprehensive characterization (XRD, TEM, XPS, H2-TPR, CO2-TPD, H2-TPD) revealed that Mn doping facilitates NiO reduction with higher Ni dispersion, increases electron density on Ni sites, and increases the population of medium-strength basic sites and oxygen vacancies on the ZrO2 support. These synergistic modifications collectively promote CO2 adsorption, H2 adsorption, and catalyst reducibility. In situ DRIFTS further identified a formate-mediated pathway, in which Mn promotes the stabilization and subsequent hydrogenation of the HCOO* intermediate. This work demonstrates that rational exploitation of promoter-support synergy can overcome the dispersion limitations inherent to high-loading Ni catalysts, providing an effective design strategy for advanced, low-temperature CO2 methanation catalysts.
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CERAMICS INTERNATIONAL
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2026
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IF 5.6
Hong-Lan Liu,Lin-Lin Zhu,Si-Yuan Tong,Wei-Ming Guo,Hua-Tay Lin
The highly transparent Er 2 O 3 ceramics were prepared with ZrO 2 and La 2 O 3 sintering aids in vacuum. The experimental results demonstrate that the presence of ZrO 2 consistently suppresses grain boundary migration, while La 2 O 3 promotes it. And the ability of ZrO 2 to reduce grain boundary migration rate surpasses the effect of La 2 O 3 in promoting grain boundary migration. At 1600°C, the Er 2 O 3 transparent ceramics doped with 10 at.% La 2 O 3 and 1 at.% ZrO 2 achieved optimal transparency with in-line transmittance of 76.7% at 1100 nm. The Er 2 O 3 sample doped with 10 at.% La 2 O 3 and 3 at.% ZrO 2 , sintered at 1800°C, exhibited the highest transmittance, reaching 80.3% at 1100 nm, corresponding to 99.1% of the theoretical in-line transmittance of Er 2 O 3 single crystal. Up/down-conversion emissions in Er 2 O 3 ceramic doped with 10 at.% La 2 O 3 and 3 at.% ZrO 2 were observed across the visible, near-infrared, and mid-infrared regions, exhibiting promising potential for applications as fluorescent displays, up-conversion luminescent materials, and infrared lasers.
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OPTICAL MATERIALS
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2019
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IF 2.687
Penghui Chen,Qiang Liu,Xiaoying Li,Yagang Feng,Xiaopu Chen,Xin Liu,Lexiang Wu,Jiang Li
Y 0.16 Zr 0.84 O 1.92 nanopowders were co-precipitated from the mixed solution of zirconium oxychloride and yttrium nitrate using ammonia as the precipitant. The influences of terminal pH value on the chemical composition and morphology of the Y 0.16 Zr 0.84 O 1.92 precursors and powders were characterized. The precursors with terminal pH = 8.5–9.25 completely transform to cubic ZrO 2 phase when calcined at 800 °C. The Y 0.16 Zr 0.84 O 1.92 powder with terminal pH = 9.0 shows the best dispersity, which is beneficial to the fabrication of transparent ceramics. Using the synthesized nanopowders as starting materials, Y 0.16 Zr 0.84 O 1.92 ceramics were prepared by pre-sintering at 1350 °C for 2 h in air and HIP post-treatment at 1800 °C for 3 h under 200 MPa Ar without sintering additives. The Y 0.16 Zr 0.84 O 1.92 ceramic sample fabricated from the powder with terminal pH = 9.0 shows the best optical quality, and its in-line transmittance exceeds 56.4% in the region of 400–850 nm, reaching 67.8% at 800 nm.
研究领域:
材料科学
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化学工程
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高影响因子
CERAMICS INTERNATIONAL
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2016
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IF 2.758
Dianguang Liu,Yan Gao,Jinling Liu,Yiguang Wang,Linan An
A mixture of pure monolithic ZrO 2 and Y 2 O 3 powders was flash-sintered at different holding times. The results show that flash-sintering led to a rapid phase transformation: The starting monolithic ZrO 2 completely transformed to tetragonal phase after the flash-sintering for as short as 10 s. Although dense samples with relatively uniform microstructures were obtained at a holding time of longer than 5 min, the holding time had no significant effect on grain size. Both the bulk and intrinsic grain-boundary conductivity increased with an increase in the holding time, indicating that flash-sintering created oxygen vacancies in both grains and grain boundaries that accumulated with an increase in the holding time.
研究领域:
材料科学
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陶瓷工程
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高影响因子
ENERGY & FUELS
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2022
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IF 4.654
Shumei Chen,Chao Miao,Lixing Liang,Jing Ouyang
This paper reports the synthesis and CO2 methanation performance of Ni/CeO2–ZrO2 (CZ) solid solutions assembled on different clay minerals (rectorite, attapulgite, halloysite, and kaolin). The catalytic performance of the samples was examined in temperature range 200−400 °C at normal pressures. The attapulgite (ATP) assembled Ni nps-incorporated-CZ solid solution (Ni–CZA) has the highest CO2 conversion and excellent stability. The CO2 conversion of the Ni–CZA catalyst reached up to 81.2% at 400 °C, and CH4 selectivity was nearly 100%. The catalyst assembled on ATP has excellent adsorption performance and a large specific surface area, resulting in higher Ce3+ and adsorbed oxygen content, thanks to the high content of oxygen vacancies and faster oxygen transfer speed. Mechanistic analysis shows that the H2 dissociates at the Ni site, the CO2 was decomposed into CO and O, and the ATP and CZ provide hydroxyls and oxygen vacancies, respectively, in this composite catalyst.
研究领域:
催化化学
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材料科学
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环境科学
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高影响因子
危险品化学品经营许可证（带存储）