COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2026
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IF 5.4
Feng Wei,Anjun Shi,Guangxing Huang,Haidong Gu,Yinsi Gan,Jianan Song
Ice-templated assembly can organize two-dimensional and one-dimensional fillers into oriented networks, providing an effective strategy for constructing thermally conductive pathways in polymer composites. However, conventional two-dimensional fillers, such as graphene and MXene, are prone to curling, restacking, and aggregation, which compromises network continuity and thermal transport efficiency. In contrast, Al flakes possess high thermal conductivity, a high aspect ratio, and resistance to curling, but their surface oxidation and poor water dispersibility limit their application in ice-templated assembly. Herein, surface modification with silicon dioxide (SiO 2 ) was first introduced onto Al flakes to improve their dispersibility in water and mitigate surface oxidation. The resulting flakes (Al@SiO 2 ) were then combined with silicon carbide nanowires (SiCNWs) to form oriented hybrid filler networks in silicone rubber (SR) through ice-templated assembly, followed by interfacial modification using a polysiloxane-based modifier. The best-performing composite achieved a through-plane thermal conductivity of 4.49 W·m −1 ·K −1 at an Al@SiO 2 /SiCNW loading of 6.54 wt% (2.60 vol%). Theoretical modeling evaluated the contribution of Al@SiO 2 flakes and SiCNWs to thermal transport, while finite-element simulations confirmed that the oriented hybrid networks promoted continuous heat transfer. The composites also exhibited excellent heat-dissipation capability and thermal stability. This work provides an effective strategy for constructing highly efficient thermally conductive networks in polymer composites. Download: Download high-res image (223KB) Download: Download full-size image
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JOURNAL OF MEMBRANE SCIENCE
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2026
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IF 8.8
Tuo Li,Junjie Ge,Xiaoying Li,Yinliang Wang,Liuxue Wang,Lei Zhang,Jun Xiang,Guiying Tian,Penggao Cheng,Na Tang
Lithium, a critical metal for green energy storage, is in surging global demand, yet its extraction from salt-lake brines with high Mg 2+ /Li + ratios faces severe technical and ecological challenges ( e.g. , low selectivity, acid washing-induced environmental damage). Herein, a bio-inspired Li + sieve membrane was developed by in situ growing Li–Al layered double hydroxide (Li/Al-LDH) on polyacrylonitrile (PAN) supports, addressing the above bottlenecks for sustainable Li-extraction from original brines. Integrated into a flat-sheet membrane module, the LDHs@PAN membrane exhibited exceptional Li-extraction performance with high Li + selectivity, rapid adsorption kinetics, and outstanding regenerability in real high Mg 2+ /Li + brine. The in situ grown LDHs form a robust organic-inorganic interface, which not only enhances the areal adsorption capacity and cycling stability but also enables fast on-site reconstruction of the degraded membrane. Notably, the membrane realizes Li + desorption via simple water washing (no acid usage), protecting the fragile ecological environment of salt-lake areas. This work provides an eco-friendly and scalable strategy for lithium recovery from original brine, supporting the sustainable supply of lithium for green energy systems and overcoming the fundamental limitations of industrial Al-based absorbents.
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ACS ES&T Water
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2026
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IF 4.5
Wencong Wang,Mingming Wang,Xianglei He,Yufeng Yang,Hui Yang,Takeshi Yanagihara
Lithium/aluminum layered double hydroxides (Li/Al-LDHs) have been widely studied for lithium extraction due to their favorable adsorption capacity and outstanding ion selectivity; however, practical applications are limited by the difficulty of SO42– intercalation–induced lithium desorption and structural delamination. In this study, siloxane networks after hydrolysis and polymerization of methyltrimethoxysilane (C4H12O3Si) were employed as cladding layers to cover the surfaces of Li/Al-LDHs, aiming to suppress SO42– intercalation and enhance the structural integrity, thereby mitigating delamination. The resistance effect is positively correlated with the thickness of the cladding layer. The adsorption capacity of the optimal sample after 8 cycles was increased by 50% compared to the pristine Li/Al-LDH. Additionally, its separation coefficients for Li/K, Li/Na, and Li/Mg─specifically 50.82, 50.47, and 149.74─significantly outperformed those of pristine Li/Al-LDH.
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JOURNAL OF ALLOYS AND COMPOUNDS
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2026
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IF 6.7
Ya-Qi Zhao,Ying Wang,You-Jin Zheng,Li-Zhi Peng,Li-Juan Wang,Fang-Biao Wang
The mechanical properties of titanium carbide (TiC) ceramics are limited by poor densification during sintering and their intrinsic brittleness. In this study, 5 wt% Al was introduced as a sintering aid, and 10 wt% cubic boron nitride (cBN) was added to fabricate TiC-based ceramic composites via high-pressure high-temperature (HPHT) sintering. The microstructure and mechanical properties were systematically investigated. The composites sintered at 4 GPa and 1400 ℃ exhibited optimal properties, with a Vickers hardness of 37.43 GPa and a fracture toughness of 11.41 MPa·m 1/2 , representing increases of 69% and 132% compared with monolithic TiC, respectively. Microstructural analysis shows that Al promotes densification by enhancing interparticle bonding, while cBN participates in interfacial reactions under HPHT conditions, leading to formation of rod-like TiB 2 phases distributed along grain boundaries. The results demonstrate that the synergistic effect of Al-assisted densification and cBN-induced TiB 2 formation governs the microstructure evolution and mechanical performance of TiC-based ceramic composites, providing a feasible strategy for designing high-performance TiC-based ceramic.
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CERAMICS INTERNATIONAL
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2026
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IF 6
Yang Yu,Siyuan Li,Hongbao Li,Changhong Ma,Dong Yue,Yu Feng
High-permittivity ceramics are essential for compact capacitors, high-capacitance-density components, and energy-efficient electronics. However, their practical implementation is often limited by the difficulty of simultaneously achieving giant permittivity, low dielectric loss, and operational stability. Herein, (Al 0.5 Li 0.5 ) x Zn 1− x O ceramics with high dopant content were fabricated by spark plasma sintering (SPS)to simultaneously regulate bulk defects and grain boundary barriers. The optimized x = 0.2 ceramic exhibits colossal permittivity over a broad frequency range, with a relative permittivity of 11710 and a dielectric loss of 0.101 at 100 Hz. Microstructure and impedance analyses reveal that the colossal permittivity of the co-doped ZnO ceramics originates from an internal barrier layer capacitor (IBLC) response arising from the electrical contrast between semiconducting ZnO grains and resistive grain boundaries. The former are associated with donor-related defect chemistry and the reducing SPS environment, whereas the resistive grain-boundary response is associated with Al 3+ enrichment and ZnAl 2 O 4 -related secondary phases. Furthermore, first-principles calculations indicate that Li + -related defects and Li + –Al 3+ complexes induce local lattice distortion and charge redistribution, while finite-element simulations illustrate modified breakdown-channel evolution. This work demonstrates a defect–grain boundary co-regulation strategy for designing ZnO-based giant dielectric ceramics suitable for compact and reliable capacitive applications.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2026
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IF 9.6
JiaRui Fu,Chuan Wang,Shuai Jiang,Bing Li,Yujue Wang,Ming Lei,Qian Zhao
An Al/Ti dual-doping strategy constructs a P2-type layered oxide with synergistic dual-ion modification. • Al/Ti co-doping enlarges the c-axis spacing and stabilises the layered oxygen framework. • The cathode retains 90.55% of its capacity after 500 cycles at 100 mA g −1 . • The hard carbon full cell delivers good rate capability and long-term cycling stability. Layered oxide cathodes for sodium-ion batteries (SIBs) often suffer from structural degradation and increased interfacial resistance during prolonged cycling. In this research, an Al/Ti dual-doping synergistic strategy is employed on P2-type Na 0.8 Al 0.02 Ti 0.02 (Ni 0.4 Mn 0.6 ) 0.96 O 2 (NNATM) to simultaneously regulate both the bulk lattice structure and interfacial chemical behavior. Al/Ti co-doping enlarges the c-axis spacing, facilitating Na + migration, while the strengthened Al/Ti-O and TM-O bonding interactions stabilize the layered framework and improve interfacial stability during cycling. Electrochemical impedance spectroscopy characterizations confirm a 40% reduction in charge-transport resistance, verifying the promoted interfacial charge conduction capability of the electrode. The NNATM cathode exhibits outstanding electrochemical performance: it delivers a reversible specific capacity of 111 mAh g −1 at 0.1C, and a reversible capacity retention of 90.55% is achieved after 500 cycles at 100 mA g −1 . The investigation provides a reliable method to enhance the long-term stability and reversibility of SIBs cathode. Download: Download high-res image (240KB) Download: Download full-size image
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Nature Communications
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2026
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IF 18.1
Li Ling,Ning Shangbo,Cheng Fangqi,Chen Mingjun,San Xingyuan,Hu Zhuofeng,Gao Linjie,Tang Yuan,Hao Yuchen,Lv Cuncai,Li Yaguang,Ye Jinhua
Photothermal hydrogenation of CO 2 offers a solar-driven route to multicarbon hydrocarbons, but controlling carbide formation and maintaining reconstructed active sites remain challenging for iron-based catalysts. Here, we develop a trace Al/Rb co-promoted CuFe 2 O 4 catalyst that enables efficient and stable photothermal CO 2 hydrogenation to light olefin under ambient pressure. The optimized catalyst achieves high C 2 -C 4 olefin selectivity of approximately 63%, suppressing CH 4 selectivity and sustaining stable photothermal-catalytic performance for 200 h. Integrated experimental characterizations and theoretical calculations reveal that the CuFe 2 O 4 precursor undergoes reaction-induced reconstruction to form Cu-Fe 5 C 2 interfacial structures. Trace Al/Rb promotion facilitates the formation and stabilization of reconstructed metal–carbide interfaces, with Al regulating the Fe-centered coordination environment and carbide stability, while Rb tunes the interfacial electronic structure and adsorption–hydrogenation balance. This cooperative regulation stabilizes carbide-based interfacial active sites and promotes CO 2 -derived C 1 intermediates toward C–C coupling and C 2 -intermediate stabilization, thereby favoring C 2 -C 4 olefin formation.
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APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
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2026
·Vol. 132
·期 9
·833
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IF 3
Pang Qingyong,Meng Xiangqing,Han Junfeng,Jing Min,Ma Fukun
Sodium acetate trihydrate (SAT) possesses a high latent heat of phase transition; however, its high degree of supercooling, low thermal conductivity, and susceptibility to phase separation limit its practical applications. This study proposes an XG-stabilized BNNS/Al 2 O 3 composite nucleation modification strategy that suppresses SAT supercooling through the combined regulation of Al 2 O 3 particles and two-dimensional BNNS, while utilizing BNNS to improve heat transfer performance. Experimental results show that 2 wt% XG effectively suppresses phase separation, 0.5 wt% Al 2 O 3 reduces the supercooling to 5.53 ℃, and BNNS further lowers the supercooling to 0.65 ℃ while increasing the thermal conductivity to 1.543 W·m − 1 ·K − 1 .Furthermore, after 100 thermal cycles, the composite exhibited good thermal energy retention capacity. This composite achieves a good overall balance between supercooling suppression, thermal energy storage density, and thermal conductivity, demonstrating application potential in the fields of low-to-medium-temperature thermal energy storage and thermal management.
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Materials
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2025
·Vol. 18
·期 21
·4936
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IF 3.2
Dan Qian,Yue Shen,Zhanli Geng,Binyu Zhao,Wandong Bai,Shiping Sun,Xiang Li,Jinbo Zeng,Shengdi Zhang,Yumin Wang,Xiufeng Ren
Driven by the demand for lightweight materials, magnesium has gained significant interest due to its abundance and low density. This study systematically investigated the effects of mechanical ball milling time and sintering temperature on the microstructure and mechanical properties of a powder-metallurgy-processed Mg-Al-Ti alloy. The results established a correlation between ball milling and sintering processes, demonstrating that regulating precursor powder characteristics effectively enhances sintering diffusion efficiency. By precisely controlling sintering temperature and powder particle size characteristics, the alloy achieved high density, hardness, and strength at relatively low temperatures, demonstrating comprehensive performance. Optimal properties were obtained at 420 °C sintering conditions: relative density of 98%, hardness of 172 HV, compressive strength of 367 MPa, and nanoscale Young’s modulus reaching 45.15 GPa. Further analysis indicated that intermetallic compounds formed during sintering contributed significantly to the hardness enhancement, with the strengthening mechanism primarily attributed to the synergistic effects of precipitation and solid solution strengthening. The work provides a theoretical basis for further development of high-performance materials by subsequent processing.
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PubMed
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Materials Today Chemistry
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2025
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IF 6.7
Zhe Kong,Yucai Lu,Jinyu Dai,Yunlan Sun,Jiuyu Chen,Baozhong Zhu
Hydrocarbon fuels doped with aluminum nanoparticles (ANPs) can enhance their combustion and energy output characteristics. However, there is an unknown impact of its oxidation degree on the stability and ignition and combustion performance (IACP) of nanofluid fuels. The experimental and molecular dynamics (MD) simulations were combined to explore the impact of ANPs with varying degrees of oxidation on the stability and IACP of aluminum/JP-10 (Al/JP-10)-based nanofluid fuels. The unoxidized ANPs are better dispersed in JP-10 fuel. However, as the oxidation degree of the ANPs increases, their agglomeration in JP-10 increases, reducing the stability of Al/JP-10 fuels. Especially, the activation energy of the Al/JP-10 (ANPs) system also increases, leading to a 36.8 % longer ignition delay for JP-10 fuel. In addition, the oxidation of ANPs partially inhibits the reaction of the core Al, which delays the peak of the formation of Al cluster, and thus hindering the combustion behavior of the nanofluid fuel. At 2000 K, the oxidation of ANPs suppresses the thermal decomposition of JP-10, while at 3000 K, Al 2 O 3 exhibits the most pronounced catalytic influence on JP-10 combustion.
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Materials Today Communications
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2025
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IF 4.5
G.D. Lai,H. Niu,K. Li,L. Lu,Y. Cai,Y.L. Bian,H.W. Chai
The deformation and damage mechanisms of aluminum/polytetrafluoroethylene (Al/PTFE) composites under quasi-static compression are critical for aerospace, defense and structural applications, yet their mesoscale behavior remains insufficiently understood. This study combines in situ synchrotron X-ray micro computed tomography (CT) with CT-based finite element method (FEM) simulations to dynamically resolve the interplay between microstructure evolution and mechanical response. Real-time 3D imaging reveals negligible contributions of initial voids to bulk deformation, while catastrophic failure is governed by shear-induced interfacial debonding between Al particles and progressive void coalescence. Mesoscale FEM simulations quantify stress localization on Al particles, demonstrating its dependence on particle alignment relative to the loading direction. Damage initiates exclusively when adjacent particles deviate from the loading direction, underscoring the pivotal role of microstructural heterogeneity. These findings provide new insights into mesoscale structure–property relations in Al/PTFE composites, and the combined methodology of in situ CT experiments and CT image-based FEM simulations offers potential for advancing mechanistic studies of multiphase composites under complex mechanical conditions.
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JOM
·
2017
·Vol. 69
·期 10
·1963-1969
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IF 1.86
Xie Kaiyu,Shi Zhongning,Xu Junli,Hu Xianwei,Gao Bingliang,Wang Zhaowen
Aluminothermic reduction-electrolysis using an inert anode process is proposed to extract oxygen and metals from Minnesota Lunar Simulant-1 (MLS-1). Effective aluminothermic reduction between dissolved MLS-1 and dissolved metal aluminum was achieved in cryolite salt media. The product phases obtained by aluminothermic reduction at 980°C for 4 h were Al, Si, and Al 5 FeSi, while the chemical components were 79.71 mass% aluminum, 12.03 mass% silicon, 5.91 mass% iron, and 2.35 mass% titanium. The cryolite salt containing Al 2 O 3 was subsequently electrolyzed with Fe 0.58 -Ni 0.42 inert anode at 960°C for 4 h. Oxygen was evolved at the anode with an anodic current efficiency of 78.28%. The results demonstrate that this two-step process is remarkably feasible for the extraterrestrial extraction of oxygen and metals. This process will help expand the existing in situ resource utilization methods.
研究领域:
空间资源利用
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提取冶金
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电化学
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月球探测
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危险品化学品经营许可证（带存储）