JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Yuxuan Zhou,Keer Ouyang,Yongqi Da,Lingyan Shen,Zhengwu Dong,Zhuotao Song,Jingjie Wang,Xiaoxue Tan,Xiaohong Jiang,Xuran Xu,A.V. Rogachev,D.G. Piliptsou,A.A. Rogachev,M.A. Yarmolenko,Jianbing Xu,Yinghua Ye,Ruiqi Shen
Energetic interfacial films represent a promising encapsulation material for micro- thruster arrays in near-Earth orbit, where their combustion performance under low- pressure or vacuum conditions is critical for practical application. Herein, a uniformly dispersed layered energetic composite film suitable for scalable array encapsulation has been designed via electrospinning technology. The ternary composite energetic film consists of interwoven polyvinylidene fluoride/aluminum/copper oxide (PVDF/Al/CuO) nanofibers. Morphological analysis confirms the effective loading of nanoparticles (Al and CuO) onto the fibers. Energetic films fabricated by this method significantly suppress particle agglomeration. Thermal analysis reveals atmosphere-dependent exothermic pathways. Constant-volume combustion experiments demonstrate that energy release is modulated by film thickness. The evolution of the film ablation flow field has been investigated. Crucially, transient resistance thermometry has for the first time reported the phenomenon of increasing ignition temperature of energetic materials with decreasing pressure under low-pressure conditions. At 1 kPa, the ignition temperature is significantly elevated compared to that at atmospheric pressure. Propagation velocity characterization uncovered a counterintuitive phenomenon: below 10 kPa, 610 μm-thick films exhibit a 42% lower propagation velocity than 270 μm-thick films, a phenomenon termed the thickness-compensation failure effect. An asymmetric heat transfer-dissipation theory is proposed to explain this inversion through geometric thermal management. This work provides crucial experimental evidence and a theoretical foundation for guiding the design of energetic films for vacuum-operating micro-thruster array encapsulation.
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DOI
高影响因子
MOLECULES
·
2025
·Vol. 30
·期 23
·4628
·
IF 4.6
Yaru Qin,Tingfei Yang,Na Chen,Jiale Li,Anqi Li,Yu Miao,Chenglong Shi,Jianmin Ma,Xue Qin
Layered transition-metal oxides are among the most promising sodium-ion battery cathodes owing to their high specific capacities and structurally tunable frameworks. However, the prototypical P2-Na0.67Ni0.33Mn0.67O2(NM) undergoes an irreversible P2 → O2 phase transition at high voltages, accompanied by severe lattice strain and capacity fade, which hinders practical deployment. Here, we propose a cooperative regulation strategy that couples Zn/Al co-doping with Na enrichment, and successfully synthesize P2-Na0.80Ni0.14Zn0.14Mn0.58Al0.14O2(NMZA-N14). The optimized NMZA-N14 delivers an initial discharge capacity of 125 mAh g−1at 0.1C and demonstrates exceptional cycling and rate performance, retaining 98.6% of its capacity after 100 cycles at 0.2C and 93.6% after 200 cycles at 1C. Kinetic analyses indicate a higher Na+diffusion coefficient and a lower charge-transfer resistance in NMZA-N14, evidencing substantially accelerated ion transport. In situ X-ray diffraction further reveals a reversible P2 → OP4 phase transition in the high-voltage regime with a unit-cell volume change of only ~2.27%, thereby avoiding the irreversible structural degradation observed in NM. This synergistic modulation markedly enhances structural stability and electrochemical kinetics, providing a viable pathway for the rational design of high-performance sodium-ion battery cathodes.
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DOI
PubMed
高影响因子
SEPARATION SCIENCE AND TECHNOLOGY
·
2021
·
IF 2.475
Yang Song,Mei Yang,Xia Zhang
The waste water containing synthetic organic dyes is commonly carcinogenic to the physical health of humans and wildlife. Solid-extraction is considered to be one of the most effective technologies in the removal of these synthetic organic dyes from the water. In this paper, the Al-BTB is synthesized and first applied in the removal of eight synthetic dyes including malachite green, basic fuchsin, acid black 210, Congo red, direct black 19, rhodamine B, direct blue 15 and methyl orange. Interestingly, the as-synthesized Al-BTB represents the highly efficient adsorption capacities toward these organics at a rapid rate. The adsorption conditions including the pH, adsorption time and the dye’s concentrations were optimized, and adsorption behaviors were explored through the adsorption kinetics simulation and the adsorption isotherm analyses. It is worth noting that the resulting Al-BTB is mesoporous and represents prominent adsorption efficiency at rapid rates toward eight dyes despite its cationic or anionic nature and with different functional groups. The reusability of the Al-BTB is also investigated, and the adsorption mechanism is discussed. This work enriches the prospective applications of mesoporous MOFs in the efficient removal of the organic dyes from waste water.
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高影响因子
ChemistrySelect
·
2026
·Vol. 11
·期 38
·e74780
·
IF 2.3
Yuan Bai,Pengfei Fan,Weiting Huang,Xinyu Gan
A reusable magnetic cellulase (CEL) immobilized composite, MF@CS-LDHs@CEL, was developed by integrating α-FeOOH–Fe 3 O 4 magnetic nanoparticles (MF), chitosan (CS), and zinc–aluminum layered double hydroxides (LDHs) with CEL for the removal of Congo red (CR) from aqueous media. The optimal CEL immobilization conditions were an initial enzyme concentration of 3 mg/mL, a glutaraldehyde concentration of 4%, a cross-linking time of 2 h, an immobilization pH of 5.0, and an immobilization temperature of 50°C. Under optimized operational conditions (50 mL of 100 mg/L CR solution, 50°C, pH 5.0, 300 min reaction time, and 30 mg of adsorbent), the experimental maximum adsorption capacity of MF@CS-LDHs@CEL for CR reached 140.64 mg/g. The material maintained an 87.66% CR removal efficiency even after eight consecutive reuse cycles. The adsorption data were best described by the Redlich–Peterson isotherm ( R 2 = 0.99591) and pseudo-second-order kinetic models ( R 2 > 0.999), suggesting heterogeneous adsorption involving strong adsorbate–surface interactions. The removal of CR was primarily associated with hydrogen bonding, electrostatic interactions, and anion-exchange processes acting in combination. In addition, MF@CS-LDHs@CEL exhibited favorable adsorption performance, convenient magnetic separation, and good reusability, demonstrating its potential as an adsorbent for treating dye-containing wastewater. Graphical A recyclable magnetic cellulase composite, MF@CS-LDHs@CEL, is developed for Congo red (CR) removal from wastewater. It reaches an adsorption capacity of 140.64 mg/g and retains 87.66% removal after eight reuse cycles. CR uptake is mainly associated with hydrogen bonding, electrostatic interactions, and anion exchange, while magnetic separation allows straightforward recovery and reuse.
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高影响因子
Materials
·
2025
·Vol. 18
·期 21
·4936
·
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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DOI
PubMed
高影响因子
Materials Today Chemistry
·
2025
·
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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高影响因子
ACS ES&T Water
·
2026
·
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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高影响因子
APPLIED SURFACE SCIENCE
·
2026
·
IF 6.6
Hang Li,Muhammad Mubeen,Jingbao Wang,Salman Khalid,Jingmao Zhao,Baomin Fan,Yiqian Lv,Mohammad Tabish,Haiqing Liu
Zn-Al-Mg coated steel (ZM-steel) has emerged as a preferred material in automotive and infrastructure applications, yet its long-term durability remains challenged by localized corrosion in chloride-rich environments. Herein, a sustainable and scalable corrosion protection strategy based on the in-situ formation of layered double hydroxide (LDH) films intercalated with benzothiazole (BTZ) was reported. By exploiting the controlled corrosion of ZM-steel surface in BTZ-containing NaCl solution, compact LDH architectures spontaneously formed, incorporating BTZ molecules within their interlayers. The resulting hybrid coating integrated the physical barrier effect of LDH with the release of BTZ anions, enabling interfacial passivation and sustained corrosion inhibition. Comparative electrochemical tests revealed that BTZ-containing NaCl solution yielded markedly enhanced corrosion-resistance as compared to NaCl solution or bare BTZ solution, with charge transfer resistance increasing from 9.44 × 10 2 to 9.13 × 10 4 Ω·cm 2 . Moreover, epoxy-overcoating effectively suppressed filiform corrosion (FFC) of ZM-steel substrate for over 35 days. Unlike conventional hydrothermal or carbonate-assisted routes for LDH fabrication, this precursor-free strategy proceeds under ambient conditions without additional reagents, underscoring its simplicity, efficiency, and scalability. These findings demonstrate that the moderate corrosion is beneficial to the formation of LDH on ZM-steel surface.
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高影响因子
POWDER TECHNOLOGY
·
2018
·
IF 3.23
Chuandong Wu,Guoqiang Luo,Jian Zhang,Qiang Shen,Zhanghua Gan,Jing Liu,Lianmeng Zhang
We reported an investigation of the influence of length scale on stabilization of boron carbide (B 4 C) during plasma activated sintering. In the current work, AA7075/B 4 C powders containing two types of B 4 C particles (Micro-B 4 C and Nano-B 4 C) were cryomilled for 8 h in liquid nitrogen, respectively. The characterization of as-cryomilled powders indicated that both Micro-B 4 C particles and Nano-B 4 C particles could distribute homogeneously in the matrix. AA7075/Nano-B 4 C powder have a finer particle size and grain size relative to that of the AA7075/Micro-B 4 C powder. The influence of length scale on stabilization of B 4 C particles during plasma activated sintering was investigated in details. The statistical grain diameter analysis from transmission electron microscopy observation revealed that the grain size of AA7075/Nano-B 4 C bulk (~77.4 nm) is finer relative to those of the AA7075 bulk (~193.5 nm) and AA7075/Micro-B 4 C bulk (~184.7 nm). The coupling effect of ex-situ Nano-B 4 C particles and in-situ dispersion particles contribute to the enhancement of the stabilization of the AA7075/Nano-B 4 C bulk.
研究领域:
材料科学
·
金属基复合材料
·
粉末冶金
·
纳米材料
·
机械合金化
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DOI
高影响因子
Science China-Materials
·
2016
·Vol. 59
·期 8
·618-628
·
IF 0
Yi Ting-Feng,Han Xiao,Yang Shuang-Yuan,Zhu Yan-Rong
Layered Li 1.2 Mn 0.56 Ni 0.16 Co 0.08− x
Al
x
O 2 (0 ≤ x ≤ 0.08) cathode materials were successfully synthesized by a sol-gel method. X-ray diffraction and the refinement data indicate that all materials have typical α-NaFeO 2 structure with R -3 m space group, and the a -axis has almost no change, but there is a slight decrease in the c lattice parameter as well as the cell volume. Scanning electron microscopy and high resolution transmission electron microscopy prove that all the samples have uniform particle size of about 200–300 nm and smooth surface. The energy-dispersive X-ray spectroscopy mapping shows that aluminum has been homogeneously doped in the Li 1.2 Mn 0.56 Ni 0.16 Co 0.08 O 2 cathode material. The cyclic voltammetry and electrochemical impedance spectroscopy reveal that appropriate Al-doping contributes to the reversible lithium-ion insertion and extraction, and then reduces the electrochemical polarization and charge transfer resistance. Li 1.2 Mn 0.56 Ni 0.16 Co 0.08− x
Al
x
O 2 ( x = 0.05) shows the lowest charge transfer resistance and the highest lithium-ion diffusion coefficient among all the samples. The Li-rich electrodes with low-level Al doping shows a much higher discharge capacity than the pristine one, especially the Li 1.2 Mn 0.56 Ni 0.16 Co 0.08− x
Al
x
O 2 ( x = 0.05) sample, which exhibits greater rate capacity and better fast charge-discharge performance than the other samples. Li 1.2 Mn 0.56 Ni 0.16 Co 0.08− x
Al
x
O 2 ( x = 0.05) also exhibits higher discharge capacity than the pristine one at each cycle at 55°C. These results clearly indicate that the high rate capacity together with a good high rate cycling performance and high-temperature performance of the low-Co Li 1.2 Mn 0.56 Ni 0.16 Co 0.08− x
Al
x
O 2 ( x =0.05) is a promising alternative to next-generation lithium-ion batteries.
研究领域:
材料科学
·
电化学
·
储能技术
·
锂离子电池
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DOI
CHEMICAL ENGINEERING JOURNAL
·
2013
·
IF 3.473
Bo Yang,Yunfei Zhang,Shubo Deng,Gang Yu,Yonghong Lu,Jinhua Wu,Jianzhong Xiao,Gang Chen,Xiaobing Cheng,Lili Shi
The Pd/Al nanoparticles (NPs) prepared by aqueous cementation were employed to probe hydrodechlorination (HDC) efficiencies of 4-chlorophenol (4-CP) in aqueous solution and 2-chlorobiphenyl (2-PCB) in surfactant solution. Major factors affecting HDC performance were investigated including acidic types, pH conditions, and surfactant types and their concentrations. Among HCl, H 2 SO 4 , H 3 PO 4 , formic acid, and acetic acid, only HCl was the proper pH adjustor to initiate HDC reaction of 4-CP with Pd/Al NPs at pH 3.0 due to the particular penetration function of active Cl − on the compact oxide film of Al. Aqueous pH states obviously influenced HDC efficiency and its values stable at pH 3–4 were the optimum range for HDC with HCl adjustor. 0.389 mM of 4-CP could be almost completely dechlorinated into phenol after 30-min reaction using 2 g/L of Pd/Al NPs with 1.2 wt.% of Pd loading. In addition, the effect of surfactants on HDC process of highly hydrophobic 2-PCB was explored, which were employed for its better solubilization. The addition of surfactants including SDS, CTAB, Tween 80, or Brij 30 had adverse effect on HDC activity of Pd/Al NPs due to their inhibiting effect on Al corrosion. The adverse effect was closely related with the concentrations of surfactants especially for each CMC level and molecular structures.
研究领域:
环境化学
·
纳米修复
·
水处理
·
催化
·
污染物降解
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DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2026
·
IF 3.1
Bofan An,Hui Ye,Xuefen Wang
As the global population of chronic kidney disease (CKD) patients continues to expand, high-performance adsorbents for uremic toxins have emerged as a critical solution to alleviate dialysis treatment challenges. In this work, a layered double hydroxide (Mg–Al LDH) was prepared via a facile hydrothermal approach and subsequently functionalized for adsorption of protein-bound toxins by organosilicon quaternary ammonium salt (Q-Mg–Al LDH). The synthesized Q-Mg–Al LDH was then incorporated into sodium alginate (SA) solution to achieve a three-dimensional Q-Mg–Al LDH/SA composite aerogel (SA-Q) by freeze-drying for easy maneuverability as adsorbents. Specifically, the organosilicon quaternary ammonium-grafted LDH (Q-Mg–Al LDH) offered both long alkyl chain and positively charged quaternary ammonium moieties, enabling synergistic adsorption through electrostatic and hydrophobic interactions, thereby exhibiting superior adsorption capacity (222.7 mg/g) for hippuric acid (HA, one typical protein-bound uremic toxin). The optimized SA-Q possessed outstanding adsorption capabilities (141.8 mg/g); more importantly, it could maintain a 95% removal rate even after 8 cycles, and also could selectively remove the diffused HA in the dialysate during hemodialysis, indicating its excellent operability and recyclability. This work demonstrated a promising strategy for constructing advanced adsorbents to eliminate uremic toxins from dialysate to facilitate the development and popularization of miniaturized hemodialysis equipment.
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高影响因子
危险品化学品经营许可证（带存储）