SEPARATION AND PURIFICATION TECHNOLOGY
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2026
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IF 9.1
Yujia Zhang,Wanwan Peng,Tianmi Zhang,Daqing Wu,Yufei Suo,Chengyi Wang,Chunfang Huang,Yi He
Treating oily wastewater containing heavy metal ions is a major challenge for traditional membranes, mainly due to limited fouling resistance and versatility. Based on this, this paper develops a hydrophilic zirconium/aluminum bimetallic organic framework functionalized superhydrophilic nanocomposite fiber membrane (Zr/Al-MOF@PAN/PEI) for simultaneous separation of oil-water emulsion and heavy metal removal. This membrane has excellent hydrophilicity and underwater oleophobicity, with a WCA of 3.5° and UOCA of 150°. Surprisingly, this composite membrane also demonstrated excellent separation performance for various oil-in-water emulsions, with a penetration flux of up to 4990 L·m −2 ·h −1 , separation efficiency exceeding 99.99%, and stable separation performance maintained even after 20 separation cycle tests. Moreover, this composite membrane achieves outstanding heavy metal adsorption capacity, especially for Pb (II) adsorption at 210.86 mg g −1 , with a removal efficiency exceeding 99. 8%. Moreover, this composite membrane exhibits stable structural characteristics and excellent anti-fouling performance in a wide pH (3−11) range and high salinity environment, while also featuring high osmotic flux, excellent heavy metal adsorption capacity, and good recycling and regeneration performance, effectively solving the challenges of managing complex oily composite polluted wastewater. This work provides a simple method for manufacturing multifunctional membranes, offering a novel technical approach for efficient remediation of complex heavy metal-rich oily wastewater.
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高影响因子
ACS Applied Materials & Interfaces
·
2025
·
IF 8.2
Xin Li,Yunlong Zhang,Ruixuan Xu,Qi-Long Yan,Hongqi Nie
The synergistic regulation of high energy output and low sensitivity has been a persistent research focus in solid propellant development. In this study, oxygen-deficient MoO3–x quantum dots (QDs)-modified Al@AP core–shell composites were fabricated via spray-drying, with a reference system containing fine AP (s-AP) serving as a control group. Systematic investigations were conducted on the interfacial modification effects and the incorporation of MoO3–x QDs on the energy release characteristics, ignition-combustion performance, and safety properties of HTPB-based composite propellants. The results indicate that SP4 with Al@AP/MoO3–x has significantly enhanced energy outputs compared with SP1 containing Al/AP, and the heat of reaction increased from 6270 to 6615 J·g–1 under identical loading densities. Meanwhile, the ignition delay time of SP4 was shortened from 25.76 to 16.38 ms, and the flame radiation intensity was increased from 1640.8 to 1944.2, indicating a significantly improved ignition property. Furthermore, the higher burning rate at low pressure and suppressed rate surges at high pressure of SP4 result in a reduced burning rate pressure exponent (from 0.57 to 0.39). Safety tests revealed lower impact sensitivity for Al@AP/MoO3–x versus Al/AP/s-AP systems based on the increased burning rate. Condensed combustion product (CCP) analyses demonstrated that the core–shell structure effectively mitigated Al agglomeration, evidenced by increased fine particles and decreased Al residues, indicating an enhanced combustion efficiency. MoO3–x QDs further optimized the CCP size distribution, reducing the dominant particle size from 44.7 to 22.3 μm.
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PubMed
高影响因子
FUEL
·
2026
·
IF 7.8
Haibiao Yu,Yudong Li,Yuanting Du,Ruixi Yang,Weijun Shan,Yuejiao Wang,Ruan Chi,Ying Xiong
The catalytic production of butene from biomass-derived γ-valerolactone (GVL) plays a crucial role in advancing sustainable energy development. In this paper, MCM-48 featuring a large surface area and ordered three-dimensional mesoporous structure, was prepared using a hydrothermal method with CTAB as the template agent. The final solid acid x wt%Al-MCM-48 catalysts were then synthesized via a simple impregnation method, using AlCl 3 as the aluminum source and ethanol as the solvent. It was found that aluminum species exist on the surface of MCM-48 in tetra-, quintu-, and hexa -coordinated forms, which leads to the formation of a substantial number of weak Brønsted and Lewis acid sites. Although the introduction of Al species further reduces the specific surface area of the catalyst, the optimal 9wt%Al-MCM-48 catalyst still maintains a high value of 651 m 2 ·g −1 , with the largest number of weak acid sites, amounting to 0.60 mmol·g −1 . The ordered three-dimensional mesoporous structure, large number of surface weak acid sites, and suitable ratio of Brønsted to Lewis acid endow the 9wt%Al-MCM-48 catalyst with high catalytic activity for the conversion GVL to butene. Upon optimization of the reaction parameters, the 9wt%Al-MCM-48 catalyst achieves a butene yield of over 90% within a 90 min reaction period at 300 °C. Further evaluation of the catalyst’s cycling stability revealed that it maintains 74% of butene yield following five consecutive cycles.
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高影响因子
Journal of Energy Storage
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2026
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IF 9.8
Changsheng Wu,Jiasong Huang,Zhiyong Wang,Xianbo Jin
This study proposes a low-temperature molten salt electrolysis strategy to prepare dendritic nanostructured silicon (nSi) from Al-Si alloys for high-performance lithium-ion battery anodes. The method uses the 403 K AlCl 3 -NaCl-KCl molten salt as electrolyte, in which aluminum is selectively removed from Al-Si (AlSi 12 , AlSi 20 , AlSi 30 ) alloys through anodic dissolution while metallic aluminum is recovered at the cathode. The resulting nSi exhibits tunable porosity dependent on the Al content in Al-Si, and the AlSi 12 -derived nSi 12 shows the highest specific surface area (48.7 m 2 g −1 ) and pore volume (0.21 cm 3 g −1 ) with interconnected 30–50 nm dendritic structures. When evaluated as anodes, nSi 12 demonstrates superior electrochemical performance with initial Coulombic efficiency of 91.1% at 1 A g −1 , retaining 2441 mAh g −1 after 100 cycles (or 80.0% capacity retention). The enhanced performance stems from its porous architecture buffering volume expansion, as evidenced by the electrode expansion after 100 cycles of 26% for nSi 12 versus 60.4% for nSi 30 . Comparative analysis reveals lower charge transfer resistance and higher Li + diffusion coefficient in nSi 12 . This method achieves an Al recovery rate of 95%, offering an energy-efficient, closed-loop approach for nanostructured silicon production with dual advantages in sustainable manufacturing and high-performance energy storage.
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高影响因子
MICROCHIMICA ACTA
·
2010
·Vol. 171
·期 3
·385-392
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IF 2.648
Yin Huanshun,Zhou Yunlei,Liu Tao,Cui Lin,Ai Shiyun,Qiu Yanyan,Zhu Lusheng
An amperometric biosensor for nitrite was prepared by immobilizing cytochrome c (Cyt c) on a gold electrode that was modified with Nafion and a Cu-Mg-Al layered double hydroxide (Cu-LDH). The Cu-LDH was characterized by Fourier transform infrared spectroscopy and powder X-ray diffraction. The UV-visible spectrum suggests that Cyt c retains its native conformation in the modified film. The direct electrochemical investigation indicated that the composite film represents a good platform for the immobilization of Cyt c as well as an excellent promoter for the electron transfer between Cyt c and the gold electrode. Moreover, the biosensor showed a remarkable bioelectrocatalytic activity for the oxidation of nitrite with a linear range from 0.75 to 123 μM. The detection limit is 2 × 10 −7 M (S/ N = 3). The biosensor was successfully applied to the determination of nitrite in food samples.
研究领域:
生物分析化学
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电化学传感
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食品分析
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生物传感器
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分子诊断
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高影响因子
INORGANIC CHEMISTRY
·
2024
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IF 4.3
Xiaowei Yang,Yanfei Zou,Chen Hu,Shikun Su,Zhenghang Wang,Houhe Dong,Wenying Teng,Bing Teng,Bingtao Zhang,Degao Zhong
Cr4+-activated phosphors are important candidate materials for NIR-II light sources, but providing a suitable lattice coordination environment for Cr4+ and achieving long wavelength broadband emission remains a challenge. In this work, a series of Cr4+-activated ABO2 (A = Li, Na; B = Al, Ga) phosphors were successfully prepared. Due to the presence of only tetrahedral coordination structures available for Cr4+ to occupy in the matrix crystal ABO2, the valence state and luminescence stability of Cr4+ are effectively guaranteed. Through the cation substitution design of A-site (Na → Li) and B-site (Ga → Al), the [BO4] tetrahedron is distorted and expanded, which degrades the symmetry of the Cr4+ coordination crystal field. Consequently, the central wavelength of the Cr4+ emission peak is tuned from 1280 to 1430 nm, and the fwhm is significantly extended from 257 to 355 nm. Thebroadband NIR-II light sources constructed with LiAlO2: 0.03Cr4+ and NaGaO2: 0.03Cr4+ phosphors verify their important potential applications in nondestructive testing and biological imaging.
研究领域:
材料科学
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光学材料
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固态化学
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光子学
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近红外光源
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高影响因子
Journal of Materials Research and Technology-JMR&T
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2022
·
IF 6.267
Yuancai Xu,Guangyu Li,Wenming Jiang,Junmin Zhan,Yang Yu,Zitian Fan
Generally, sand casted Al–Li alloy castings have very serious problems in pore defect and interfacial reaction, remarkably weakening the Al–Li alloy castings quality. How to solve these problems is always a challenge. In this paper, a novel inorganic binder coating containing lithium silicate solution binder and silicon carbide powder on the surface of the sand mold was developed to eliminate pore defect and prevent interfacial reaction of the sand casted Al–Li alloy castings. The effective mechanism of the inorganic binder coating on the pore defect and interfacial reaction was discussed. The obtained results showed that the inorganic binder coating formed a thin shell on the surface of the sand mold after pouring, which can effectively prevent the metal-mold interface reaction of the sand casting Al–Li alloy and significantly reduce the porosity defects. Among them, the Al–Li alloy casting prepared using the inorganic binder coating consisting of the lithium silicate binder and silicon carbide powder basically had no pore defects, and the porosity was only 3.73%, which was 66.7% lower than that of the casting prepared by the sand mold without any treatment. Moreover, the interface reaction of the Al–Li alloy and sand mold was fully eliminated, which was attributed to the low overall atomic diffusion rate of the silicon carbide based on molecular dynamics simulation results.
研究领域:
材料科学
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金属铸造技术
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表面工程
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高影响因子
JOURNAL OF THE INDIAN CHEMICAL SOCIETY
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2026
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IF 3.4
Zhang Lei,Zhang Liu,Chen Ya,Zhang Lei,Tan Chenxi,Song Ruikang,Gao Shizhe
This study employed 3,5-pyrazoledicarboxylic acid (PZDC) as a ligand to synthesize aluminum-based metal-organic frameworks (Al-PZDC) via an in-situ hydrothermal method. Al-PZDC composites were constructed using two loading methods—preloading and postloading—with 13X molecular sieves, activated carbon, and γ-Al 2 O 3 as carriers, respectively. The physicochemical properties of the materials were characterized using X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), Brunauer-Emmett-Teller (BET), BET specific surface area analysis , scanning electron microscopy (SEM), and thermogravimetric analysis (TGA). The NH 3 adsorption mechanism was investigated by combining adsorption kinetic models, pre- and post-adsorption spectral analysis, and in situ differential Raman infrared spectroscopy (Insitu DRIFTS). The results indicate that Al-PZDC was successfully loaded onto each carrier; Composites prepared by the pre-loading method exhibited superior adsorption performance compared to those from the post-loading method. The composite (13X molecular sieve @Al-PZDC-0.4) prepared using 13X molecular sieve as the carrier and the pre-loading method demonstrated the most outstanding NH 3 adsorption performance, achieving a saturation adsorption capacity of 100.57 mg·g -1 at 25°C and 1% NH 3 concentration. Kinetics analysis indicates that NH 3 adsorption is primarily chemical adsorption supplemented by physical adsorption. The adsorption mechanism involves physical adsorption, pore filling, hydrogen bonding interactions, and the synergistic effects of Lewis acid (L-acid) and Brønsted acid (B-acid) sites.
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高影响因子
APPLIED CATALYSIS A-GENERAL
·
2026
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IF 4.8
Xiaofei Ma,Shijiao Hao,Hui Jiang,Weiqian Qi,Hefang Wang
La 2 O 2 CO 3 -Cu-Al mixed oxides (CL X A-LDO) were fabricated via the calcination of lanthanum carbonate-doped Cu-Al layered double hydroxides (LDHs) with unique wool-scale-like lamellar structures. CL X A-LDO were employed for the synthesis of dimethyl carbonate (DMC) via the transesterification of methanol with propylene carbonate (PC). Characterization via XRD, FT-IR, TG, and SEM confirmed that lanthanum carbonate-doped Cu-Al LDHs with unique wool-scale-like lamellar structures were successfully prepared. After calcination, these precursors transformed into La 2 O 2 CO 3 -CuO-Al 2 O 3 composites. CO 2 -TPD and XPS results indicate that CL 1.0 A-LDO-600 possesses abundant medium/strong basic sites and a favorable O II /O I ratio. Consequently, CL 1.0 A-LDO-600 exhibited a PC conversion of 68.44% and a DMC yield of 67.84% under mild conditions (80 °C, 2 h, catalyst loading 2.0 wt%, methanol/PC molar ratio = 10). Moreover, CL 1.0 A-LDO-600 demonstrated high stability, with only a modest activity loss (Δ PC = 6.2%) after six consecutive cycles. The kinetic analysis indicated a complex reaction mechanism. However, this behavior was effectively simplified to a pseudo-first-order reaction model, providing activation energies of Ea(k + ) = 47.17 kJ·mol -1 (forward) and Ea(k - ) = 44.46 kJ·mol -1 (reverse). The experimental data were systematically validated using a particle swarm optimization-backpropagation artificial neural network (PSO-BP) model. The hybrid model demonstrated superior predictive accuracy, achieving R 2 values of 0.9956 and 0.9916 for the training and testing sets, respectively, thereby outperforming the conventional BP model. This work provides fundamental insights into the rational design of LDHs-derived mixed oxide catalysts for sustainable DMC synthesis.
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高影响因子
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
·
2026
·Vol. 46
·期 7
·118142
·
IF 6.2
Mengwen Zhang,Fanyu Meng,Na Cao,Lei Fan,Shoulei Yang
High-performance Al₂O₃-Ti(C,N) composites are critical for extreme-environment applications, yet conventional static sintering cannot simultaneously achieve full densification and strong grain-boundary bonding. Here, a dynamic sinter forging (DSF) strategy coupling sintering densification and oscillatory forging deformation was developed to activate plastic flow and defect engineering. Composites were sintered at 1600 °C with oscillatory amplitudes of 0–40 MPa (5 Hz) and a maximum pressure of 80 MPa. The flexural strength increased from 583 MPa under a pressure of 80 ± 0 MPa to 1070 MPa under 40 ± 40 MPa, representing an 83 % enhancement. TEM revealed increased dislocation densities in Al₂O₃ (2.6 ×10⁵→2.9 ×10⁶ cm⁻²) and Ti(C,N) (4.8 ×10⁶→8.2 ×10⁶ cm⁻²) and curved interfaces, shifting fracture from intergranular to transgranular, showing that defect generation and interface curvature jointly strengthen the composites. This DSF route enables concurrent densification and microstructural strengthening within a single thermal cycle, offering a general pathway to high-toughness oxide–carbonitride ceramics.
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高影响因子
Journal of Energy Storage
·
2026
·
IF 10.7
Wenteng Yang,Zhiding Han,Zhi Nie,Yingqiang Wu,Zaowen Zhao,Lei Yu,Junchen Zhou,Guizhen Wang,Xuerong Zheng,Yida Deng
Polyethylene oxide (PEO)-based electrolytes exhibit great compatibility with lithium-metal anodes. However, complex cleavage reactions occur with cathode electrode at high voltages, and constructing artificial interfacial layers has emerged as an effective strategy. In this work, we employed atomic layer deposition (ALD) to build a nanometer-scale amorphous Al₂O₃ interlayer between the LiNi₀.₆Co₀.₂Mn₀.₂O₂ (NCM622) cathode and the PEO/Li 7 La 3 Zr 2 O 12 (LLZO) composite electrolyte, which enhanced the cycling stability of the cells at 4.3 V. With an optimized interfacial thickness, the capacity retention improved from 44.8% to 97.3% after 100 cycles and remained 86.5% after 200 cycles, accompanied by enhanced rate capability. The artificial interlayer suppressed parasitic reactions by blocking direct contact between the active material and polymer electrolyte, thereby alleviating interfacial polarization during cycling.
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高影响因子
Surfaces and Interfaces
·
2025
·
IF 6.3
Zhenlang Mai,Zhihui Zhang,Kaiwei Zhong,Tingting Wu,Changhong Wang
While nanofluids act as highly efficient heat transfer media, insufficient stability restricts their practical use in specific thermal management scenarios. In this study, hexadecyl trimethoxy silane (HDTMS) was used as a surface modifier. It was chemically grafted onto nano-Al₂O₃ particles, producing HDTMS-functionalized Al₂O₃ particles and the corresponding oil-based immersion composite nanofluids. The influence of HDTMS on the suspension stability of oil-based nanofluids was systematically evaluated, along with a comprehensive analysis of their thermophysical properties. Furthermore, the binding mechanisms between nanoparticles and mineral oil, both pre- and post-modification, were elucidated at the microscopic level via molecular dynamics simulations. Results indicated that HDTMS modification successfully introduced long carbon chains onto the nanoparticle surfaces, imparting enhanced lipophilicity. The 0.4 wt% modified nanofluids (HT-O) maintained a transmittance of 59.89% after 30 days of static settling. At the microscopic scale, the interaction energy between HDTMS-Al₂O₃ and mineral oil EC-160 increased by 51.92% at 343 K, and the secondary peak in the radial distribution function markedly decreased to 26.27 with stabilized fluctuations, indicating that the grafted layer effectively suppressed particle aggregation and promoted dispersion uniformity through steric hindrance. This study first applied modified alumina nanofluids to the immersion thermal management of batteries, providing key technical insights for developing immersion cooling media that integrate high thermal conductivity, long-term stability, and electrical insulation for battery thermal management. Meanwhile, molecular dynamics simulation was employed to reveal the intrinsic molecular-level mechanism behind the enhanced stability of the nanofluids.
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高影响因子
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