INORGANIC CHEMISTRY
·
2026
·
IF 4.6
Qihao Wang,Hongyue Diao,Yusen Chen,Weiping Xiao,Min Song,Yao Zhou,Yixing Zhou,Lei Wang,Qi Wu,Zexing Wu
Hydrogen spillover offers a promising approach to develop highly active and affordable electrocatalysts for the hydrogen evolution reaction by regulating hydrogen migration and kinetics. Herein, a catalyst composed of osmium nanoparticles supported on zirconium dioxide (Os/ZrO2) is designed and synthesized. The Lewis-acid-rich ZrO2 support not only promotes water dissociation but also triggers hydrogen spillover, thereby optimizing the desorption energetics of hydrogen intermediates. Then, Os/ZrO2 delivers outstanding HER activity in both alkaline and acidic electrolytes, requiring overpotentials of only 16 and 14 mV to reach 10 mA cm–2, surpassing commercial Pt/C and Os/C. Mechanistic studies have confirmed the occurrence of hydrogen spillover, whereby hydrogen intermediates migrate from the Os nanoparticles to the ZrO2 surface, effectively tuning the adsorption/desorption kinetics and leading to significantly enhanced HER performance. Furthermore, in an anion-exchange membrane electrolyzer, Os/ZrO2||RuO2 achieves a low voltage of 1.82 V at 1 A cm–2 and maintains stable operation, translating to a hydrogen production cost of $0.97 per gasoline gallon equivalent. This work presents an effective strategy for designing high-performance HER catalysts through hydrogen spillover engineering, providing a feasible route for enhanced electrocatalytic systems.
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DOI
PubMed
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2026
·
IF 19.9
Dong Cao,Yuhao Tian,Xueke Wang,Cuimei Li,Weijie Cai,Congming Li,Chun-Ran Chang
Photothermal CO 2 conversion into value-added syngas via dry reforming is pivotal for greenhouse gas utilization, yet its efficiency is constrained by catalyst deactivation. Here, we demonstrate that morphology-induced crystal phase modulation of ZrO 2 supports enables effective optimization of interfacial sites in Ni/ZrO 2 catalysts. By engineering cubic (Ni/ZrO 2 -C) and stellated (Ni/ZrO 2 -S) architectures, a metastable mixed-phase structure (54.8% monoclinic/37.3% tetragonal) is stabilized to achieve precise phase regulation. Systematic characterization reveals that this phase transformation strengthens metal–support interactions, improves Ni dispersion, and generates abundant oxygen vacancies. As a result, Ni/ZrO 2 -C achieves 95% ethanol conversion with lower by-product formation and exhibits exceptional stability, with a 50% lower deactivation rate (0.13% h −1 ) than Ni/ZrO 2 -S (0.26% h −1 ). The enhanced performance is attributed to improved surface basicity and more efficient coke gasification facilitated by interfacial oxygen vacancies. Theoretical calculations further confirm kinetically favorable pathways with reduced activation barriers, particularly for carbon oxidation, accounting for the observed 3.2-fold higher activity of Ni/ZrO 2 -C. This work establishes morphology-directed crystal phase engineering as a general strategy for designing efficient photothermal catalysts.
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高影响因子
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
·
2026
·Vol. 109
·期 9
·e71194
·
IF 4.2
Le Fu,Bohan Wang,Zihua Lei,Mingxi Deng,Guanghua Liu
The in situ formation of carbon fillers has been demonstrated as an effective strategy to eliminate the agglomeration of carbon fillers in ceramic composites. In this study, combustion synthesis was employed to in situ incorporate carbon into a ZrO 2 –SiO 2 ceramic powder using CO 2 gas as the carbon source and magnesium powder as the exothermic medium. The resulting disordered carbon is uniformly distributed within the powder matrix. Furthermore, magnesium element is simultaneously incorporated into the powder as a byproduct. The co-presence of carbon and magnesium elements synergistically enhances the solid-state reaction between ZrO 2 and SiO 2 during sintering, facilitating the formation of ZrSiO 4 at a significantly reduced temperature of 1080°C. Meanwhile, the solid-state reaction significantly promotes the densification of the ceramic composite. The incorporated carbon exhibits strong bonding with the ceramic matrix and remains stable within the matrix up to at least 1000°C. Compared with conventional ZrSiO 4 , the ZrSiO 4 phase formed in this study exhibits much lower decomposition temperature in range of 1000°C–1200°C. Molten copper exhibits pronounced corrosion toward the ceramic composite, primarily through reactions with the SiO 2 phase released from the decomposition of ZrSiO 4 .
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DOI
高影响因子
Journal of Materials Research and Technology-JMR&T
·
2025
·
IF 6.6
Fansheng Zeng,Linzhu Wang,Ruizhi Gao,Jingfeng Wang,Junqi Li,Chaoyi Chen,Xing Ran
The morphology of MnS inclusions significantly affects the mechanical properties of steel. In this study, the morphology and size of MnS inclusions were refined by introducing nano-ZrO 2 particles into the molten steel. As the ZrO 2 content increased, the number of Al 2 O 3 –MnS inclusions decreased, while ZrO 2 –MnS inclusions became predominant core-shell inclusions. Simultaneously, MnS inclusions transformed from elongated shapes to fine spherical particles with an average area of 0.963 μm 2 and a sphericity of 0.805 at a ZrO 2 content of 0.0126 wt.%. Although both Al 2 O 3 and ZrO 2 acted as heterogeneous nucleation sites for MnS, first-principles calculations revealed that ZrO 2 exhibited stronger nucleation capability, with the adsorption ability showing a clear gradient: monoclinic ZrO 2 exhibiting the strongest adsorption, followed by tetragonal ZrO 2 , and finally α-Al 2 O 3 . Based on the experimental observations and theoretical results, a mechanism for ZrO 2 -facilitated heterogeneous nucleation of MnS was proposed. These findings provide valuable theoretical insights and technical guidance for spheroidization of MnS inclusions during steelmaking process.
研究领域:
材料科学
·
冶金学
·
夹杂物工程
·
计算材料科学
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DOI
高影响因子
JOURNAL OF ELECTRONIC MATERIALS
·
2025
·Vol. 54
·期 6
·4882-4890
·
IF 2.5
Fu Yingtao,Chen Zhaoyang,Sun Yifan,Liu Yi,Fan Yanwei,Wang Junhua,Chen Huiming
In order to develop glass-ceramic materials capable of emitting neutral white light and to address the limitations of single rare earth element ion-doped luminescent materials, a glass-ceramic material containing Dy 3+ /Eu 3+ -co-doped NaCaPO 4 nanocrystals was successfully synthesized using the melt-quenching and two-step crystallization methods. The prepared glass-ceramic materials were characterized by X-ray diffraction, transmission electron microscopy, and photoluminescence spectroscopy. The energy transfer process between Dy 3+ and Eu 3+ ions was confirmed through excitation spectra, emission spectra, and luminescence decay curves. The emission coordinates and correlated color temperatures of samples with different doping concentrations were calculated using the standard CIE 1931 colorimetric system. The results showed that coordinated emission was achieved in the glass-ceramic containing NaCaPO 4 nanocrystals under excitation at 363 nm. Furthermore, by adjusting the concentration ratio of Dy 3+ and Eu 3+ ions, the color temperature of the white light emission could be tuned from 9910 K to 5349 K, enabling modification of the emission color from the cool-white region to the pure-white region, with chromaticity coordinates reaching (0.3350, 0.3040). Additionally, the material exhibited high thermal stability, with an activation energy of 0.18649 eV. It is expected that the Dy 3+ /Eu 3+ -co-doped NaCaPO 4 glass-ceramic studied here has broad prospects for applications in white light-emitting diodes.
研究领域:
材料科学
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光子学
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光学材料
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稀土掺杂
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固态照明
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DOI
高影响因子
SURFACE & COATINGS TECHNOLOGY
·
2019
·
IF 3.192
Lu Zhu,Yousen Zhu,Xuanru Ren,Ping Zhang,Jianghao Qiao,Peizhong Feng
MoSi 2 -MoB-ZrO 2 composite powders are one-step synthesized prepared by self-propagating high-temperature synthesis (SHS), which are further utilized to prepare the oxidation protective coatings by spark plasma sintering (SPS) method on molybdenum substrate. Microstructure and properties of the coatings were investigated and determined. Oxidation behavior of the coatings at high temperature was also studied. The results showed that the composite coating is dense and crack-free due to the addition of ZrO 2 , which is beneficial for the decrease of mismatch in coefficient of thermal expansion, and no void exists in the diffusion layer owing to the diffusion of Si, which is inhibited by adding MoB. Compared with the pure MoSi2 coating, the high hardness of the composite coating is enhanced by about 20% while the fracture toughness of the composite coating is improved by about 25%, which makes the occurrence of intergranular fracture , crack deflection and crack bridging. After oxidation at 1400 °C for 80 h, MoSi 2 coating failed while xMoSi 2 -MoB-3ZrO 2 (x = 3, 4, 5) composite coating still kept its protective effect. Only a little substrate is consumed during oxidation and improved oxidation resistance is gained by MoSi 2 -MoB-ZrO 2 composite coating. 3MoSi 2 -MoB-3ZrO 2 coating shows the relatively best oxidation resistance due to the formation of crack-free oxide film on the surface of the coating.
研究领域:
材料科学
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表面工程
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高温氧化
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陶瓷涂层
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粉末冶金
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DOI
高影响因子
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
·
2022
·Vol. 106
·期 4
·2384-2392
·
IF 4.186
Yi Zhang,Rongxia Huang,Fan Zhang,Zhihao Liang,Tianbao Xie,Hua-Tay Lin,Yejing Dai
ZrO 2 powders of various particle sizes (0.15, 0.7, 500 µm) were used to simulate loose powder bed sintering to prepare BF–BT piezoelectric ceramics. The phase structure, dielectric properties, ferroelectric properties, and piezoelectric properties were compared with the samples sintered by the conventional powder bed method (i.e., powder of the same composition as the sample). Results showed that the use of loose ZrO 2 powder bed could improve the heat conduction rate and the sintering quality of bulk BF–BT piezoelectric ceramics. The XPS results showed that the samples sintered with 500 µm ZrO 2 powder beds had the lowest concentration of Fe 2+ , exhibited the largest piezoelectric coefficients ( d 33 = 201 pC/N). In contrast, the sample sintered with a conventional powder bed under the same sintering conditions had a piezoelectric coefficient d 33 of 156 pC/N.
研究领域:
材料科学
·
物理学
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DOI
高影响因子
Surfaces and Interfaces
·
2026
·
IF 6
Keer Tan,Jinping Zhao,Linfa Bao,Linjun Shao,Hanyun Liu,Yishuo Dong,Peng Yang
Catalytic combustion is a widely used technology for volatile organic compounds (VOCs) abatement, in which highly active catalysts play a key role. However, catalyst is prone to poisoning during the degradation of VOCs. In order to study anti-poisoning performance, the Cl, S and P heteroatoms were artificially introduced, and the corresponding doped CuO-ZrO 2 catalysts were prepared via a salicylic acid-assisted sol-gel method. The effects of heteroatom doping on the structure, acidity, redox properties and catalytic performance were systematically studied. The results showed that Cl, S and P doping effectively tuned the catalyst structure, active species dispersion and surface Lewis/Brønsted acid sites, which exerted a meaningful influence on catalytic performance of catalysts in the degradation of VOCs pollutants. In addition, compared with the undoped CuZrO, Cl-CuZrO exhibited the highest catalytic performance for degradation of toluene, chlorobenzene and p-chlorotoluene, indicating that the CuO-ZrO 2 catalyst system possessed excellent chlorine resistance. Meanwhile, S-CuZrO showed comparable performance to CuZrO, which demonstrated that the CuO-ZrO 2 catalysts had a certain degree of sulfur resistance. Through the design and optimization of heteroatom doping, this work provided valuable insights for enhancing the catalytic efficiency and structure stability of CuO-ZrO 2 based catalysts.
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DOI
高影响因子
MATERIALS CHEMISTRY AND PHYSICS
·
2020
·
IF 3.408
Jiawei Wei,Bingqiang Han,Xuancheng Wang,Junfeng Chen,Yaowu Wei,Wen Yan,Nan Li
In this paper, CaO granules were prepared, using the slaked lime as the raw material as well as ZrO 2 , TiO 2 , and V 2 O 5 as additives, respectively. The influence of different additives on the sintering properties, microstructure and hydration resistance of CaO granules was investigated. The results indicated that the introduction of additives could obviously promote the densification and the hydration resistance of the specimens. Especially, the sintering mechanisms of the specimens with different additives were studied. For the specimens with ZrO 2 and TiO 2 as additives, the in-situ formed CaZrO 3 and Ca 3 Ti 2 O 7 between grain boundaries promoted the densification to enhance the properties of the granules. However, the adding of V 2 O 5 generated a coating on the surfaces of CaO granules which contributed to the best hydration resistance.
研究领域:
材料科学
·
无机化学
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DOI
高影响因子
CERAMICS INTERNATIONAL
·
2019
·
IF 3.45
Jingmao Li,Xiaoqiang Li,Jiaming Lai,Hao Qiu,Ting Cao
In this work, a novel way was developed to facilitate the sintering of a binderless cemented carbide with Al 2 O 3 contain while improving its toughness. WC- 1.87 wt % Al 2 O 3 - 4.13 wt %ZrO 2 cemented carbides with 1 wt % B 2 O 3 as additives were consolidated by high energy ball-milling and spark plasma sintering the as-milled composite powders. The effects of 1 wt % B 2 O 3 content on the sintering behaviour, microstructure and mechanical properties of the obtained cemented carbides were investigated. The presence of B 2 O 3 significantly lowers the sintering temperature by forming liquid phase and react with Al 2 O 3 which contributed to obtaining fully dense specimens at 1350 °C and maintains fine grain sizes of WC until the temperature exceeding 1450 °C. The sintering temperature of the specimens with optimum mechanical properties has been also reduced comparing that of the original WC- 1.87 wt % Al 2 O 3 - 4.13 wt %ZrO 2 cemented carbides. Furthermore, the addition of B 2 O 3 triggered the reaction between B 2 O 3 and Al 2 O 3 resulting in forming in-situ elongated aluminium borate grains (A 4 B 2 O 9 and A 18 B 4 O 33 whiskers), which promoted the toughness. The specimens sintered at 1450 °C exhibited optimal mechanical properties: the Vickers hardness and fracture toughness were 19.26 GPa and 11.49 MPa m 1/2 , respectively.
研究领域:
材料科学
·
工程学
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DOI
高影响因子
Catalysts
·
2019
·Vol. 9
·期 10
·849
·
IF 3.444
Zeyu Xue,Zhaoping Zhong,Bo Zhang,Chao Xu
To investigate the catalytic pyrolysis performance of complex metal oxide catalysts for biomass, γ-Al2O3was prepared through the precipitation method, and then ZrO2and γ-Al2O3were blended in the proportion of 2:8 using the co-precipitation method. Next, CeO2was loaded on the surface of the catalyst for further modification. The three catalysts, A, ZA and CZA, were obtained. The specific surface and acidity of the catalysts were characterized by nitrogen adsorption–desorption and NH3-Temperature Programmed Desorption (NH3-TPD) respectively. The catalytic pyrolysis performance of catalysts for bamboo residues was investigated by Pyrolysis gas chromatography mass spectrometry (Py-GC/MS). Chromatograms were analyzed for identification of the pyrolysis products and the relative amounts of each component were calculated. Experimental results indicated that catalyst A had a good catalytic activity for the fast pyrolysis of bamboo residues. The addition of ZrO2and CeO2could continuously enhance the acidity of the catalyst and further promote the pyrolysis of macromolecular compounds and deoxidation of oxygen-containing compounds. Finally, catalyst CZA, obtained by compound modification, could not only dramatically reduce the relative content of phenol, acid and aldehyde and other oxygen-containing compounds, but also achieved the maximum hydrocarbon yield of 23.38%. The catalytic performance of catalyst CZA improved significantly compared with catalyst A.Keywords:biomass;pyrolysis;catalytic cracking;Py-GC/MS;complex metal oxides
研究领域:
能源与燃料化学
·
催化化学
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DOI
高影响因子
SCRIPTA MATERIALIA
·
2014
·
IF 2.968
Ben Ma,Bo Chi,Jian Pu,Jian Li
The morphology of domain structure in LaNbO 4 added to YSZ–NiO composite was examined using a focused ion beam prepared specimen in a transmission electron microscope with a straining stage. It is confirmed for the first time that the morphology is changed under load through domain boundary movement. The driving force for this domain switch is the difference in Gibbs free energy between domains with different crystallographic orientations. This domain switch improves toughness by dissipating stress build-up at the crack tips.
研究领域:
材料科学
·
晶体学
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DOI
高影响因子
危险品化学品经营许可证（带存储）