JOURNAL OF ALLOYS AND COMPOUNDS
·
2024
·
IF 5.8
Yuchao Fan,Xu Mei,Beibei Liu,Jianfeng Wang,Li Ye,Yingjiu Zhang,Xinjian Li
The size of reinforcements is a pivotal and conventional parameter in metal matrix composites . Based on the distinctive preparation process of MXene , this research introduces a novel strategy to tailor the size of Ti 3 C 2 T x through the controlled ball milling of its precursor, Ti 3 AlC 2 . This approach fabricated Ti 3 C 2 T x sheets with sizes of 4.7 µm, 1.8 µm, and 0.6 µm. Subsequently, these Ti 3 C 2 T x sheets are incorporated into a magnesium (Mg) matrix composite to investigate the effect of Ti 3 C 2 T x size on the strengthening performance. The findings reveal a trend wherein the compressive yield strength (CYS) of the Ti 3 C 2 T x /ZK61 composites increases and the failure strain decreases with the decreased size of Ti 3 C 2 T x . Incorporating 4.7 µm Ti 3 C 2 T x results in an 11.0% reduction in CYS coupled with a 50% increase in failure strain. Incorporating 1.8 µm Ti 3 C 2 T x leads to a 4.6% increase in CYS with a 6.5% increase in failure strain. Incorporating 0.6 µm Ti 3 C 2 T x leads to a 10.7% increase in CYS with a 3.2% increase in failure strain.
研究领域:
材料科学
·
力学
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产品关联
DOI
高影响因子
CHINESE CHEMICAL LETTERS
·
2015
·
IF 1.587
Teng-Jie Ren,Juan Zhang,Yan-Hui Hu,Jun-Pan Li,Meng-Shuai Liu,Di-Shun Zhao
Several metal-based ionic liquids (ILs) were synthesized and used as extractants for the desulfurization of dibenzothiophene (DBT) in simulated fuel oil. The effects of several anion and metal ions, n (ILs)/ n (metal) as mole ratio, V IL / V oil and extractive times on the removal ratio of DBT were investigated in detail. The results showed that [BMIM]HSO 4 /FeCl 3 (BMIM was short for 1-butyl-3-methyl imidazole) was superior to the other ILs for the extractive desulfurization. A total of 100% of DBT was removed at room temperature in 5 min with V [ BMIM ] HSO 4 / FeCl 3 / V oil = 1 : 1 . The extractive activity of [BMIM]HSO 4 /FeCl 3 IL did not change almost after five runs. Extractive desulfurization of different sulfur compounds and commercial diesel fuel oil were also examined. The removal ratios of the sulfur compounds as the reaction substrates were all over 90% and the sulfur content of commercial diesel oil decreased to 120 ppm from 12,400 ppm.
研究领域:
化学工程
·
环境科学
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产品关联
DOI
高影响因子
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
·
2018
·Vol. 102
·期 5
·2415-2425
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IF 2.956
Jingyuan Chu,Yue Zhao,Guangyu Jiang,Wei Wu,Zhiwei Zhang,Zhiyong Hong,Zhijian Jin
Tuning substrate properties is an effective methodology to modulate the texture development of MgO films deposited by ion beam-assisted deposition (IBAD) process for epitaxial oxide films. Herein, a solution deposition planarization (SDP) technique is employed to deposit Gd-Zr-O layer for engineering surface properties of the flexible metal substrate. The correlation between the Gd-Zr-O thin film microstructure and the IBAD-MgO texture is investigated. The coordinated study on atomic force microscopy (AFM) and reflection high-energy electron diffraction (RHEED) reveal that the grain coarsening during high-temperature sintering negatively influences the texture formation of IBAD-MgO. Moreover, the chemical environment of the atoms on the surface of Gd-Zr-O seed layer also plays a critical role, which is normally overlooked. The X-ray photoelectron spectroscopy (XPS) analysis indicates that the carbon residue and intermediate phase result in the poor texture of the IBAD-MgO. This phenomenon is related to the partial decomposition and synthesis reactions due to the lower sintering temperature or reduced surface to volume ratio. We demonstrate the high-quality texture of IBAD-MgO layer, deposited on mono-coated thick Gd-Zr-O film, by using optimal heat-treatment conditions. The cross-sectional TEM images present the dense Gd-Zr-O film with Gd 2 Zr 2 O 7 nanograins. The multifunctionalities, such as planarization, a barrier layer, and seed layer, of Gd-Zr-O layers are realized in full-stacked CeO 2 /LaMnO 3 /IBAD-MgO/SDP-Gd-Zr-O/C276 samples. This work demonstrates a route for simplifying the architecture of 2G-HTS using Gd-Zr-O layer and explores the effect of the surface properties on texture formation in IBAD-MgO layer.
研究领域:
材料科学
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物理学
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产品关联
DOI
高影响因子
MOLECULES
·
2023
·Vol. 28
·期 17
·6187
·
IF 4.6
Le Xu,Jiateng Chen,Pengcheng Zhao,Boxiong Shen,Zijian Zhou,Zhuozhi Wang
To promote the practical application of TiO2in photocatalytic toluene oxidation, the honeycomb aluminum plates were selected as the metal substrate for the loading of TiO2powder. Surface-etching treatment was performed and titanium tetrachloride was selected as the binder to strengthen the loading stability. The loading stability and photocatalytic activity of the monolithic catalyst were further investigated, and the optimal surface treatment scheme (acid etching with 15.0 wt.% HNO3solution for 15 min impregnation) was proposed. Therein, the optimal monolithic catalyst could achieve the loading efficiency of 42.4% and toluene degradation efficiencies of 76.2%. The mechanism for the stable loading of TiO2was revealed by experiment and DFT calculation. The high surface roughness of metal substrate and the strong chemisorption between TiO2and TiCl4accounted for the high loading efficiency and photocatalytic activity. This work provides the pioneering exploration for the practical application of TiO2catalysts loaded on the surface of metal substrate for VOCs removal, which is of significance for the large-scaled application of photocatalytic technology.
研究领域:
环境科学
·
材料科学
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产品关联
DOI
PubMed
高影响因子
SURFACE & COATINGS TECHNOLOGY
·
2022
·
IF 4.865
Haijie Chen,Zhiwen Zheng,Hongxiang Yu,Xiaolong Liu,Dan Qiao,Dapeng Feng,Zenghong Song,Jian Zhang
Friction and wear seriously affect the performance, service life and stability of metal moving parts. In this work, a novel GO composite film grafted with POCl 3 was fabricated on metal substrates, including SS, Ti and Al. These films showed excellent tribological properties, including high carrying capacity, low friction coefficient (COF) and low wear volume on the macroscale. A tribofilm composed of GO nanoflakes and metallic phosphate was formed in the wear track of SS substrate. In addition, amorphous carbon and metallic phosphate were the main components of the transfer layer formed on the surface of the steel ball. The excellent tribological properties were dominated by GO, and the great wear resistance was attributed to the formation of metallic phosphates during the friction process. Simulation results showed that the oxygen of metallic phosphate was derived from GO modified with POCl 3 rather than air. Taking the synergistic effect of GO and POCl 3 into account when designing nanocomposite films is of great value in industrial applications.
研究领域:
材料科学
·
摩擦学
·
表面工程
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产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Chang Liu,Shan Zhu,Fengxiang Sun,Biao Chen,Liying Ma,Chunsheng Shi,Naiqin Zhao
Metal-based catalysts are currently at the forefront of hydrogen evolution catalysts, yet the influence of particle size on their catalytic activity is intricate. In this study, we compiled a database using actual test results and employed interpretable algorithms to analyze the relationship of catalyst factors with their catalytic properties. Our analysis revealed a bowl-shaped correlation between the measured overpotential and the particle size of metal-based catalysts, with the optimal size falling within the range of 1.5 to 3.0 nm. To corroborate the algorithmic analysis, we synthesized nanoalloys using an ultrathin carbon layer, which effectively restricted the movement of metal atoms at high temperatures. The series of materials prepared displayed a consistent pattern in their measured overpotential, aligning with our algorithm’s prediction. Notably, the 2.0 nm PtCoNi catalyst achieved superior catalytic performance with lower precious metal content than commercial Pt/C. Further data-driven analysis indicates that the size-dependent catalytic activity is shaped by the balance between metal-support interaction and the exposure ratio of the active site. This study underscores the efficacy of merging a data-driven approach with precise control of material synthesis to analyze complex catalytic systems, providing a potent tool for future exploration in the field.
研究领域:
材料科学
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催化化学
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产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2018
·Vol. 53
·期 7
·5364-5379
·
IF 2.993
Xu Zhe,Jiang Deyi,Wu Fei,Guo Xiaogang,Wei Zhibo,Chen Jie
A simple electrophoretic deposition method followed by stearic acid modification was developed to prepare superhydrophobic multiscale nano-aluminum films on a series of metal substrates such as nickel, copper, titanium and stainless steel. The surface morphology and chemical compositions were characterized by a field emission scanning electron microscopy, X-ray diffraction, energy-dispersive X-ray spectroscope, Fourier-transform infrared spectrophotometer and white light interferometer. The resultant nano-aluminum films exhibited excellent superhydrophobicity with a water contact angle of 168.5° and a water sliding angle of 2°. Furthermore, the obtained nano-Al films showed the desirable stability and durability after the related testing. In addition, the impact dynamic behaviors of water droplet on the superhydrophobic nano-Al films were described via the corresponding parameters, such as Weber number ( We ), spreading factor ( β ), contact time ( t c ), etc. Based on these characteristics, the superhydrophobic nano-Al films presented excellent water-repellent property. The EPD process is an efficient method to prepare superhydrophobic nano-Al films on common engineering metal materials, which can be applied to various industrial or manufacturing fields, including oil–water separation, anti-icing, self-cleaning, anti-corrosion, microelectronic fabrication and so forth.
研究领域:
材料科学
·
表面工程
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产品关联
DOI
高影响因子
INDUSTRIAL CROPS AND PRODUCTS
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2024
·
IF 5.6
Ya-Peng Du,Meng Li,Xiao-Ping Zheng,Yu Chai,Yan-Zhen Zheng
Effective pre-treatment is vital for efficiently separating and utilizing the three primary components of lignocellulose. In this investigation, agricultural by-product bagasse underwent pre-treatment using a system comprising a metal-based ionic liquid ([BMIM][AlCl 4 ]) and the biomass-derived organic acid lactic acid (LA). This combination exhibited a remarkable synergistic effect in removing lignin (72.58 wt%) while preserving cellulose (70.1 wt%) in the solid residues. The mechanism of the synergistic effect of [BMIM][AlCl 4 ] and LA was revealed by density functional theory (DFT) calculations, which elucidated the formation of weak-strength, closed-shell, and electrostatically dominant hydrogen bonds between [BMIM][AlCl 4 ]/LA and lignin. [BMIM][AlCl 4 ] and LA interacted with lignin simultaneously, significantly contributing to lignin dissolution. The removal of lignin and cellulose retention without disrupting the cellulose structure was confirmed through characterization using FTIR, SEM, and XRD techniques. Besides, the pre-treatment effectively broke down the barrier to degradation, enhancing the conversion yield of cellulose into the important platform molecule levulinic acid. Additionally, the regenerated lignin, with small molecular weight and nanometer particle size, demonstrated high antioxidant and antibacterial properties. Overall, this study provides insights into the development of ionic liquid-organic acid pre-treatment strategies for efficiently converting agricultural waste into biofuels, biochemicals, and bio-based materials.
研究领域:
生物工程
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化学工程
·
材料科学
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DOI
高影响因子
Journal of Coatings Technology and Research
·
2023
·Vol. 20
·期 5
·1513-1527
·
IF 2.3
Yao Hongrui,Bi Wenya,Yin Xu,Mu Shenglong,Sha Shiqiang,Wang Na
In this work, h-BN@STPP was successfully obtained by facile co-modification of sodium tripolyphosphate (STPP) and silane coupling agent (KH-550) on h-BN nanosheets, with waterborne epoxy coatings incorporated for metallic substrate corrosion protection. Results showed that the impedance modulus at the lowest frequency ( Z f = 0.1 Hz ) of h-BN@STPP composite coating increased three orders of magnitude in comparison with neat waterborne epoxy coating, exhibiting outstanding corrosion resistance. The reinforced anticorrosion performances of h-BN@STPP composite coatings could be attributed to the “labyrinth effect” of h-BN and passivation effect of STPP on the metal substrates. Graphical abstract
研究领域:
材料科学
·
腐蚀与防护
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DOI
高影响因子
CORROSION SCIENCE
·
2017
·
IF 5.245
Mingjun Cui,Siming Ren,Songlv Qin,Qunji Xue,Haichao Zhao,Liping Wang
Hexagonal boron nitride (h-BN), a structural analogue of graphene, is a better alternative for anticorrosive coatings because of its electrical insulation properties. In this work, few-layer h-BN nanosheets are obtained by the exfoliation of stacked h-BN powders with poly(2-butyl aniline) (PBA) and incorporated into epoxy coatings for protecting metallic substrate against corrosion. Results show that as prepared composite coatings exhibit high impedance modulus and low water absorption, suggesting their superior performance of corrosion protection owing to the “labyrinth effect” of h-BN and passivation effect of PBA on the metal substrates.
研究领域:
材料科学
·
腐蚀与防护
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产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2025
·
IF 9.7
Hujing Ling,Qiang Yuan,Tian Sheng,Xun Wang
Exploring suitable dual active site and metal–substrate interface effect is essential for designing efficient and robust electrocatalysts across a wide pH range for the hydrogen evolution reaction (HER). Herein, alloyed platinum–ruthenium clusters supported on nanosheet-assembled molybdenum carbide microflowers (PtRu/Mo 2 C) are reported as efficient pH-universal electrocatalysts for HER. Due to dual active site and metal–substrate interface effect, the optimized Pt 0.83 Ru 0.17 /Mo 2 C electrocatalyst exhibits extremely low overpotentials (η 10 ) of 9, 19, and 33 mV to deliver 10 mA cm −2 in 0.5 M H 2 SO 4 , 1.0 M KOH, and 1.0 M phosphate buffered electrolytes (PBS), outperforming the benchmark Pt electrocatalyst. In addition, Pt 0.83 Ru 0.17 /Mo 2 C achieves excellent stability of 200 h at a big current density of 500 mA cm −2 in the anionic exchange membrane water electrolyzer. Density functional theory (DFT) calculations and in situ Raman spectra reveal that the interaction of PtRu clusters with Mo 2 C substrate, while Ru modulates the electron cloud density of Pt, thus accelerating H 2 O dissociation and H* desorption on the surface of Pt 0.83 Ru 0.17 /Mo 2 C and thus synergistically enhancing the HER kinetics. The research opens up an efficient strategy to exploit cost-effective, high-performance, and pH–universal HER electrocatalyst while facilitating green hydrogen energy development.
研究领域:
材料科学
·
电化学
·
催化科学
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产品关联
DOI
PubMed
高影响因子
Materials
·
2021
·Vol. 14
·期 13
·3561
·
IF 3.623
Lewen Fan,Lizhuang Yang,Dongdong Zhao,Liying Ma,Chunnian He,Fang He,Chunsheng Shi,Junwei Sha,Naiqin Zhao
In this work, few-layered MoS2(FLM) nanosheet-reinforced Al matrix composites are developed through powder metallurgy and hot extrusion. The microstructure, mechanical properties, and strengthening mechanisms have been systematically investigated. It is found that Al12Mo and Al2S3can be formed in-situ during the sintering process, resulting in the improvement of interfacial bonding between FLM and Al matrix. With 1.5 wt.% of FLM addition, an improved tensile strength of 234 MPa with a high elongation of 17% can be obtained. Moreover, the strengthening mechanisms are also demonstrated to be grain refinement, dislocation strengthening, and load transfer, and the calculation indicates that load transfer is the main contribution factor. This work will inspire more new designs of metal matrix composites with balanced strength and ductility.Keywords:aluminum;metal matrix composites (MMCs);MoS2nanosheets;microstructure;mechanical property;strengthening mechanism
研究领域:
材料科学
·
机械工程
·
纳米技术
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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）