APPLIED CATALYSIS A-GENERAL
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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
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
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 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
APPLIED SURFACE SCIENCE
·
2026
·
IF 6.6
Yanrui Hu,Shuo Wang,Hongdi Fu,Jingming Tian,Qi Zhou,Linlin Liu,Xiaodong Li,Tinglu Song,Meishuai Zou
A TMPO/mPEG/WAX synergistic interface was successfully constructed on Al-5Li alloy powders. • The surface coating significantly improved the hydrophobicity and compatibility of Al-5Li. • Enhanced optical emission confirmed increased combustion activity of coated particles. • The surface coating improved both the mechanical properties and combustion performance of composite propellants. Focusing on the issues of poor compatibility and interfacial instability of Al-Li alloy powders in composite solid propellants, this study develops a composite coating system composed of trimethyl phosphate (TMP), methoxy polyethylene glycol (mPEG), and paraffin wax (WAX) (denoted as TPW) to regulate the particle surface interface. The coating structure and composition are characterized by TEM, ToF-SIMS, and XPS. The results indicate that TPW forms a relatively continuous and uniform interfacial layer on the particle surface. This interfacial structure improves the compatibility between Al-5Li and typical propellant components, namely hydroxyl-terminated polybutadiene (HTPB) and ammonium perchlorate (AP), stabilizing the thermal decomposition behavior and improving the mechanical performance of the propellant. Meanwhile, the combustion heat of the powder does not decrease significantly after coating, and it shows excellent combustion response characteristics. With this interfacial structure in place, a practical balance can be achieved among compatibility, structural integrity, and energy output, offering a new approach for applying Al-Li alloy powders in composite propellants. Download: Download high-res image (152KB) Download: Download full-size image
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JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
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2026
·
IF 7.1
Wen-bo Lou,Yi-dan Zheng,Shu-han Zhang,Dong-yan Liu
The carbon thermal reduction process is considered an industrially promising method for spent ternary cathode materials. It’s comprehensive studies to address the reduction thermodynamics, phase transition, and kinetic behaviours of actual Al-containing ternary materials has received increasing attention. In this study, based on thermodynamic evaluation, under ideal conditions, both C and Al are suitable reducing agents. And the reduction difficulty is Mn > Co > Ni from thermodynamic and experimental analysis. The predicted products are mainly Ni, Co, CoO, NiO, MnO, Li 2 CO 3 , and Li-Al compounds. Further, phase transition analysis indicates that it is feasible to reduce the material while simultaneously suppressing Li-Al bonding, with composition of Ni or Co, Li 2 CO 3 , and MnO, by controlling the conditions of 700 °C for 2 h with 15% carbon. According to thermogravimetric analysis, this process can be roughly divided into three stages, including evaporation, decomposition and reduction, respectively. Finally, the results of kinetics analysis combining the Coats-Redfern and KAS/FWO models indicates that the corresponding activation energy increases from 13.46 kJ/mol to 481.53 kJ/mol across the reaction stages. This study may provide theoretical foundations for practical recycling of Al-containing battery materials, and demonstrate the broad prospects of the carbon thermal reduction process for industrial application.
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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
SEPARATION AND PURIFICATION TECHNOLOGY
·
2026
·
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
INORGANIC CHEMISTRY COMMUNICATIONS
·
2026
·
IF 5.9
Yajun Wang,Shaojie Zhang,Qiang Gan,Zhengliang Deng,Wenyu Li
To investigate the effect of Ni on the performance of Al/Fe 2 O 3 thermite, Ni was introduced into the system, and an Al/Ni/Fe 2 O 3 ternary composite thermite (Al/Ni/Fe 2 O 3 -EPD) was successfully fabricated via electrophoretic deposition (EPD). A systematic comparison was conducted with physically mixed (PM) samples (Al/Ni/Fe 2 O 3 -PM). The morphology, structure, and thermal behavior of the samples were characterized by SEM-EDS, XRD, and TG-DSC analyses. The results indicate that the EPD-fabricated samples exhibit a dense structure and a more uniform component distribution, whereas the physically mixed samples show pronounced agglomeration of Ni. Thermal analysis demonstrates that the incorporation of Ni enhances the thermal stability of the thermite but suppresses the energy release process. Non-isothermal kinetic analysis further reveals that Ni reduces the overall reaction activity of the system, and EPD does not lead to a reduction in the activation energy of the Al/Ni/Fe 2 O 3 system. Mechanistic studies indicate that the reaction of Al/Ni/Fe 2 O 3 -EPD in air involves the thermite reaction between Al and Fe 2 O 3 , the direct oxidation of Al, Ni, and Fe, and the alloying reaction between Al and Ni. This work systematically evaluates the effects of the EPD process and Ni fuel addition on the performance of the Al/Fe 2 O 3 thermite system. By comparing the results with reported Al/B/Fe 2 O 3 and Al/Ti/Fe 2 O 3 systems, the study elucidates the synergistic and differentiated mechanisms of various composite fuels in thermite reactions, providing useful insights into the structural design and mechanistic investigation of multicomponent composite thermites.
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高影响因子
ACS Applied Materials & Interfaces
·
2026
·
IF 7.8
Jiayao Gao,Chen Chen,Linshan Wang,Zhenyu Wang,You Fu,Yaxin Li,Yinghang Kou,Zilong Liu,Yiming Wang,Hongbin Sun
Aluminum-water (Al-H2O) batteries, enabling on-demand high-purity hydrogen production and simultaneous power output, hold great promise for hydrogen energy and electrochemical energy storage applications. However, severe self-corrosion of aluminum anode and parasitic hydrogen evolution reaction (HER) in highly alkaline electrolytes hinder their practical deployment. This work proposes a novel organic-inorganic hybrid corrosion inhibitor comprising sodium 3-mercapto-1-propanesulfonate (MPS) and zinc oxide (ZnO). Combined experimental and computational investigations demonstrate that a dense, robust adsorption-deposition composite protective layer is formed on the anode surface via a "molecular bridging" synergistic mechanism, delivering a corrosion inhibition efficiency of 72.9%. In alkaline Al-H2O full-cell tests, the battery achieves 77.5% anode utilization, and a specific capacity of 2309 mAh g-1 at 20 mA cm-2. This work offers valuable guidance for designing high-performance hybrid corrosion inhibitors for Al anodes.
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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
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