CHEMICAL ENGINEERING JOURNAL
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2026
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IF 12.5
Xiang Zeng,Guoqing Xiao,Haiqing Zhang,Rutong Song,Yuemei Zhang,Yue Fan,Shuyu Fu,Chunlin Chen,Chunyan Chen
With the widespread use of epoxy resin (EP) in construction, higher demands are placed on its flame retardancy and weather resistance. This study develops a synergistic flame retardant strategy based on a multi-core-shell structure, consisting of a spherical mesoporous hollow silica (MHS) core, a cyclic polyphosphazene (PZS) inner shell, and a Ni, Al layered double hydroxide (LDH) outer shell. At 2 wt% addition, the EP composite achieves a limiting oxygen index (LOI) of 33.7% and passed the UL-94 V-0 rating. Meanwhile, the peak heat release rate (HRR) and total heat release (THR) decreased by 37.61% and 42.85%. Smoke release (TSR) and peak CO production rate (COP) decreased by 45.10% and 40.70% respectively, demonstrating remarkable flame retardancy and smoke suppression. MHS retains heat and inhibits diffusion, the PZS layer captures free radicals and enhances the char formation. And the Ni, Al-LDH shell releases non-flammable gases and catalyzes graphitization, realizing synergistic flame retardancy. Additionally, it improves interfacial compatibility and stress dispersion, enhancing mechanical and weather performance. Chemical resistance tests showed a 13.7% reduction in tensile strength after 30 days of HCl immersion, while ultraviolet (UV) aging caused minimal degradation. This research provides a promising approach for high-performance, multifunctional epoxy composites.
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高影响因子
SENSORS AND ACTUATORS A-PHYSICAL
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2026
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IF 5.1
Kunpeng Gao,Junqi Tang
Propose low-cost multimodal flexible mechanical sensor fabrication. • Build model for LM sensor resistance-strain prediction. • Simultaneously monitor proximity, pressure, biaxial strain signals. • Sensor realizes voice, cervical bending & head posture detection. Flexible wearable sensors hold considerable promise for health monitoring and human–machine interfaces; however, their widespread adoption remains hindered by intricate fabrication protocols, suboptimal interfacial adhesion, and electromechanical models lacking predictive accuracy. Herein, we report a facile, MEMS(Micro-Electro-Mechanical Systems)-free manufacturing strategy for a vertically stacked multifunctional sensor utilizing mechanochemically modified Al₂O₃/liquid metal (LM) composite. The semi-solid Al₂O₃/LM phase markedly enhances interfacial bonding with Ecoflex substrates, while template-guided blade coating enables micropatterning with 300 μm feature resolution. The integrated device combines dual-axial resistive strain sensing with capacitive pressure and proximity detection, facilitating simultaneous discrimination of orthogonal (x and y) strains, normal pressure (0.03–15 kPa), and object proximity. A refined numerical model is established to predict resistance evolution with high fidelity across 0–300% strain. The sensor demonstrates a strain detection range of 1%–400%, linear pressure sensitivity, and robust cycling stability over 10,000 stretch–release cycles. Its conformable integration onto human skin enables accurate monitoring of head movements and vocalization, underscoring substantial potential for wearable electronics and soft human–machine interfaces. Download: Download high-res image (246KB) Download: Download full-size image
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高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
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2026
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IF 3.9
Qi Zeng,Xinyi Xie,Cuilian Zhu,Lili Hu,Bo Xiao,Shupeng Guo,Bo Hou,Lili Liu,Min Zhong
The SiC NP-modified high thermal conductivity Co/Al2O3@Al Fischer–Tropsch synthesis (FTS) catalyst has been proven to significantly enhance catalytic activity and selectivity toward long-chain hydrocarbons (C5+), but the underlying mechanism responsible for this promotional effect remains unclear. In this study, commercially available SiO2 NPs are used as a substitute for SiC NPs to prepare a cost-effective SiO2-modified Co/Al2O3@Al catalyst (Co/AS-O) for improved FTS performance, serving as a reference to elucidate the unique role of SiC NPs in enhancing FTS performance. Systematic characterizations demonstrate that SiC promotes the formation of the hexagonal close-packed (HCP) Co phase, yielding a higher intrinsic activity. In contrast, the face-centered cubic (FCC) Co phase predominates in the Co/AS-O and an unmodified reference catalyst (Co/A-Y). Although both modified catalysts exhibit enhanced CO conversion, the superior activity of the SiC NP-modified catalyst (Co/AS-C) stems from an increased density of active sites and its higher intrinsic activity, as evidenced by a higher turnover frequency (TOF). In contrast, the enhancement for Co/AS-O is solely due to a greater number of exposed Co0 sites. Moreover, the incorporation of NPs enhances *CO adsorption and restricts the activity of surface *H species, collectively establishing a *C-rich microenvironment that promotes chain growth and olefin formation. This study provides a fundamental understanding of how inert NPs modulate the FTS performance of the thermally conductive Co/Al2O3@Al catalyst.
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高影响因子
Journal of Water Process Engineering
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2026
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IF 6.6
Yi Ming Jun
β-CD to Fe-Al oxyhydroxide e − transfer induces positive ESP shift, forming e − -deficient cavity. • Activated β-CD cavity enhances TC affinity, supported by experiments and simplified DFT. • Composite achieves 152 mg/g capacity and good reusability and selectivity. • Cooperative enrichment-stabilization: β-CD recognition & Fe coordination. The development of high-performance adsorbents is often constrained by an inherent trade-off between rapid sequestration kinetics and strong binding capacity. To address this bottleneck, we rationally design a β-cyclodextrin-modified mixed-valent iron (Fe 2+ /Fe 3+ ) ‑aluminum hydroxide hybrid composite (CD-FeAl-HC) for efficient tetracycline (TC) removal. A unique cooperative enrichment-stabilization mechanism is realized in this structured composite: interfacial activated β-CD acts as a molecular recognition unit that rapidly pre-concentrates TC from bulk solution, while the adjacent mixed-valent Fe 2+ /Fe 3+ sites provide strong coordination binding for stable immobilization. DFT calculations further reveal that interfacial electron transfer from β-CD to FeAl-HC induces a distinct positive shift in the electrostatic potential of the β-CD cavity, converting it from an inert pocket into an electron-deficient molecular trap. Benefiting from this synergistic effect, CD-FeAl-HC delivers a competitive maximum adsorption capacity (151.99 mg/g), remarkably fast adsorption kinetics, and excellent anti-interference performance against coexisting ions and natural organic matter. Notably, the composite achieves over 90% removal efficiency for both TC and ofloxacin in mixed solution, while maintaining >90% TC removal in real water matrices (reservoir and landscape water). Furthermore, it retains more than 90% of removal efficiency after 10 consecutive adsorption-desorption cycles, demonstrating outstanding reusability. This work establishes a generalizable design strategy that integrates molecular enrichment and surface stabilization within a single hybrid material, providing a promising framework for the rational construction of high-performance adsorbents toward emerging organic pollutant remediation. Download: Download high-res image (160KB) Download: Download full-size image
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高影响因子
DESALINATION
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2026
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IF 9.9
Sehria Zia,Muhammad Kashif,Haojie Ge,Yafei Guo,Tianlong Deng
Mn-Co/Al-LDH enables efficient lithium capturing from Salt Lake Brines. • Fiber adsorbent exhibits excellent Li + selectivity, mechanical stability and durability. • PVDF@Mn-Co/Al-LDH design as fiber functionalization via wet spinning. • Dynamic uptake capacity of Li + 14.94 ± 1.23 mg·g −1 from Da-Qaidam Salt Lake. Lithium‑aluminum layered double hydroxides (LiAl-LDH) have been successfully used on a commercial scale to extract lithium from salt lake brine, their uncertain extraction procedure and inadequate Li + adsorption ability prevent further development of their uses. High selectivity of Li + has been achieved by the LDHs adsorption from high Mg/Li ratio salt lake brine, but zinc and titanium-based LDH adsorbents are unstable in acidic environments and pose environmental hazards. In this study, a novel trimetallic-based PVDF@Mn-Co/Al-LDH fibrous composite material with tunable properties is compared to bimetallic-LDHs. Density Functional Theory (DFT) is used to optimize the composite design and adsorption sites calculations. To approach the industrial application of Mn-Co/Al-LDH powder, it was further fabricated into porous nature fiber by wet spinning technology with cost effective PVDF form as strong binder with hydrophilicity exhibited Li + maximum adsorption capacity by 50% Mn-Co/Al-LDH fiber composition of 16.73 ± 1.02 mg.g −1 from Li + brine and the dynamic adsorption capacity is 14.94 ± 1.23 mg·g −1 with a 93% elution rate and 4–5% dissolution rate of Mn/Co ions. This synthetic fibrous composite adsorbent highlights a promising approach for evaluating LDH's potential in lithium extraction from rich‑lithium high Mg/Li ratio brine resources, due to its superior selectivity, adsorption/desorption performance and cyclic stability. Download: Download high-res image (139KB) Download: Download full-size image
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高影响因子
Crystals
·
2026
·Vol. 16
·期 9
·553
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IF 2.9
Shanquan Deng,Junwei Zhu,Meihua Bian,Xingseng Zhang,Heng Chen,Yuyin He,Jianing Peng
The effects of equimolar La/Ce co-doping (0–0.4 wt.% of each element) on the microstructure, mechanical properties, and electrical conductivity of the Al-0.5Fe (8176) conductor alloy were investigated in the as-cast, cold-drawn, and annealed (300 °C, 2 h) states. La/Ce additions refine the as-cast eutectic cells and modify the detrimental Al13Fe4intermetallic from coarse plate-like to fine spheroidal particles. At 0.3 wt.% La + 0.3 wt.% Ce (0.3LC), the annealed wire reaches a peak elongation of 16.7% (+42.7% relative to the rare-earth-free alloy), while its electrical conductivity rises from 59.87 to 61.81% IACS. The conductivity increase is explained by a solute-scavenging mechanism: La and Ce bind Fe and Si impurities into stable Al-RE intermetallics, reducing solute-induced electron scattering in the α-Al matrix. At the same time, thermally stable Al-RE dispersoids pin subgrain boundaries during annealing, retard recrystallization, and preserve the fine-grained structure that benefits ductility. Both effects originate from the same RE addition. This coupled scavenging–pinning pathway breaks the usual trade-off between conductivity and ductility and defines an optimal composition range for high-performance Al-Fe conductor alloys.
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高影响因子
JOURNAL OF ENVIRONMENTAL MANAGEMENT
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2026
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IF 9.2
Shan Zhong,Bingqian Zhang,Lu Yang,Zengxian Wei,Qian Zhang,Xuan Ru,Zongchen Li,Lishan Zhang
Beryllium (Be) metallurgy generates residues that are simultaneously hazardous wastes and potentially valuable secondary resources, yet practical Be recovery remains challenging because of the strongly coupled Be and aluminum (Al) hydrolysis chemistry and the complex Al–NH 4 + sulfate matrix. The study demonstrates a pH-programmed, two-stage precipitation strategy for the integrated recovery of Be, Al, and NH 4 + from Be-bearing smelting residue. Equilibrium analysis and experimental results consistently showed that Al precipitated preferentially in the weakly acidic range (pH 4.2∼5.0), Be reached a stable precipitation domain only near neutrality (pH about 7.0), thereby creating an operable selectivity window of approximately 1∼2 pH units. Equilibrium modeling reveals a sequential Al-first and Be-second hydrolysis–precipitation pathway through staged pH control. To further mitigate matrix carryover, the process was coupled with targeted post-treatment: heavy-liquid upgrading removed entrained impurities from the Be-enriched precipitate, and selective acid leaching recovered residual Be from the Al-rich fraction. The integrated flowsheet produced high-purity Be(OH) 2 , Al(OH) 3 and (NH 4 ) 2 SO 4 products with mean purities of 98.67%, 99.37%, and 99.47%, and recoveries of 78.52%, 97.74%, and 99.89%, respectively. A preliminary techno-economic assessment indicated a net benefit of approximately 2.13 × 10 4 CNY t −1 . These results demonstrate a simple, selective, and potentially scalable route for the comprehensive utilization of major recoverable components of Be-bearing smelting residue with simultaneous risk mitigation and resource recovery.
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PubMed
高影响因子
Catalysts
·
2023
·Vol. 13
·期 5
·800
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IF 3.9
Zhong Xie,Jinpei Hei,Lei Cheng,Jing Li,Xiaojie Yin,Sugang Meng
CO2hydrogenation to methanol was conducted using a set of activated carbon-supported Cu/ZnO/Al2O3catalysts (CCZA) prepared by an incipient wetness impregnation approach. The effect of the Cu/Al ratio on the physicochemical properties of the catalysts, as well as their catalytic performance, were investigated. As Cu/Al ratio increased, the metallic Cu surface area displayed a reducing trend from 6.88 to 4.18 m2∙gcat−1, while the CO2adsorption capacity exhibited an increasing trend. Meanwhile, aluminum content will have an important effect on the catalysts’ reducibility and, thus, on their catalytic performance. The CCZA-2.7-de catalyst demonstrated the highest selectivity to methanol at 83.75% due to the excellent distribution and synergistic effect of copper and zinc. Although the CO2conversion of CCZA-2.2-de and CCZA-3.5-de exceeded 10%, the CH3OH selectivity was less than 60%, which may be attributed to the larger particle sizes of ZnO and poor interactions in Cu–Zn. The present study offers a novel approach to increase the number of active sites, optimize the activated carbon-aided Cu/ZnO/Al2O3catalyst’s composition, and finally elucidate the mechanism for CO2hydrogenation to methanol.Keywords:CO2hydrogenation;CuO/ZnO/Al2O3catalyst;methanol synthesis;carbon-supported catalyst;thermocatalysis
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高影响因子
CHEMICAL ENGINEERING JOURNAL
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2023
·
IF 15.1
Dongyang Qiu,Zhangqiang Dong,Lijuan Liu,Chuyuan Huang,Youbang Yue,Gang Zhang,Lijian Hao,Xianfeng Chen
Dust explosions caused by energetic metals pose a significant risk to process industries, making it crucial to develop high-performance explosion inhibitors. In this study, the modified power plant solid waste fly ash (FA) was confirmed as a raw material for the preparation of core–shell inhibitors to efficiently suppress dust explosion of Al-Mg alloy. The interfacial compatibility of FA was dramatically improved by using alkali hydrothermal modification and organic modification. It formed a well-coated nano-Mg(OH) 2 cladding layer on the surface of modified FA by the heterogeneous nucleation method. In a vertical combustion pipe and a 20 L spherical explosion device, the suppression effect of this novel core–shell inhibitor (FA-2@Mg(OH) 2 ) was investigated. The experimental results showed that the addition of 60 wt% of FA-2@Mg(OH) 2 reduced the maximum flame velocity ( V max ), velocity to the top of the pipe ( V top ), and average pulsation degree ( V ap ) by 87.9 %, 92.5 %, and 87.7 %, respectively, and the peak flame temperature ( T p ) declined to 298 °C. The maximum explosion pressure ( P max ) and the maximum explosion pressure rise rate (( dp / dt ) max ) were reduced by 86.1 % and 92.9 %, respectively. Combining the analysis results of SEM, EDS , XRD , and TG-DSC, the suppression mechanism of FA-2@Mg(OH) 2 was explained in depth, mainly from the heat absorption, coating effect, gas dilution, and radical adsorption. This work not only sheds new light on the design of dust explosion suppression functional materials but also broadens the application of industrial solid waste FA.
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高影响因子
Advanced Sustainable Systems
·
2022
·Vol. 7
·期 2
·2200387
·
IF 6.737
Meng He,Zhihao Li,Yujie Guo,Maofeng Zhang,Zhengdong Zhu,Xiaoyi Shi,Konghao Han,Youju Huang,Honglin Liu
The practical application of surface-enhanced Raman spectroscopy (SERS) technology for quantitative analysis still confronts the hinder of controlling the uniformity of signal and anchoring target molecules in a designed space. Herein, a facile method of devising the shrinkage of three-dimension (3D) hot spots droplets on a hydrophobic array substrate is demonstrated for the quantitative and multiplex detection of pesticide residues by using a portable Raman spectrometer. The shrunk droplet which is consisted of the analyte solution and AgNPs sol can induce simultaneously increasing density of plasmonic hot spots and immobilizing target molecules in hot spots. Besides, the closely packed Ag nanoparticles (AgNPs) are anchored in the gaps of the MoS 2 nanosheet array, generating uniform hotspots distribution with relative standard deviation (RSD) of about 8 %. In addition, the synergetic effects between MoS 2 and AgNPs further enhance the SERS sensitivity, and thereby target molecules of 10 −9 m are readily detected. Besides, the proposed strategy exhibits excellent SERS sensitivity for the analysis of pesticides down to 10 −8 m . Importantly, quantitative analysis and multi-components detection of pesticide residues on honeysuckle surface are achieved. Therefore, it is expected to be used for quantitative analysis of complex pesticide systems on real samples.
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高影响因子
JOURNAL OF MOLECULAR LIQUIDS
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2022
·
IF 6.633
Congcong Chen,Ying Xie,Lingyi Jia,Yong Zhang
Efficient capture of Th(IV) from aqueous solution is of importance to both solve the radioactive pollution for environmental safety and provide clean energy for sustainable development. However, it still faces huge challenge. In this study, eucalyptus leaf extract was applied as template agent to fabricate Zn/Al-bimetallic layered double oxides (ZnAlLDO), providing more active sites for Th(IV) removal. The removal process of Th(IV) onto ZnAlLDO could reach equilibrium within 5 min and the maximum removal capacity calculated from the Langmuir model was 1153.71 mg g −1 at pH = 4.0 and 298 K. Over 97 % Th(IV) could be removed by ZnAlLDO during the dynamic adsorption process and the removal efficiency still remained at a high level (85 %) after 5 cycles. The Th(IV) removal process on ZnAlLDO was ascribed to electrostatic attraction, complexation and ion exchange. It could be believed that the ZnAlLDO with large removal capacity (1155.5 mg g −1 ), fast equilibrium time (5 min) and easy desorption (91.76 %) with high recovery (85 %) might be a promising adsorbent for the separation of Th(IV).
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高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2023
·
IF 8.6
Wenyu Wang,Ruihua Li,Fan Bu,Yue Gao,Baoyu Gao,Qinyan Yue,Min Yang,Yi Li
The pH conditions affected the binding sites and complexation ability of Al species and humic acid (HA), resulting in the difference of coagulation and membrane fouling mechanism. It is important to explore the dynamic process of coagulation for the mechanisms of Al species and HA. In this study, three Al species (Al a /Al b /Al c ) were used in coagulation process to compare the pollution degree of ultrafiltration (UF). Then, the removal efficiency of Al a for DOC was better than that of Al b and Al c , that is, the removal performance of suspended and dissolved organic matter was better for Al a . Through the analysis of coagulation dynamic process and membrane resistances, the flocs formed were smaller size and grow slowly to the equilibrium stage at pH 4, which was easy to cause membrane fouling by concentration polarization. With the pH increasing to a neutral condition, the flocs had a large size and loose structure, and then the porous cake layer was easy to be removed by physical cleaning, leading to the membrane fouling mainly due to pore plugging. Under alkaline conditions, flocs with small size and dense structure were mainly formed by sweeping, which resulted in the cake layer as the main cause of membrane fouling. This study is helpful to optimize the process of HA removal by coagulation-UF, and provides technical support for the coagulation and membrane mechanism of Al species and HA under different pH conditions.
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高影响因子
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