SEPARATION AND PURIFICATION TECHNOLOGY
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2025
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IF 9
Weili Shao,Wanli Yue,Libing Ren,Gaohui Fan,Pengqi Shi,Jianxin He,Li Chen
Ceramic nanofiber sponges offer excellent resistance to temperature and corrosion resistance, rendering them suitable for various applications in heat insulation, sound absorption, and high-temperature filtration. However, traditional ceramic nanofibers are difficult to prepare and are inherently brittle at high temperatures, which significantly limits their development. Therefore, this study proposes a method of fabricating SiO 2 /Al 2 O 3 nanofiber (SANF) sponges using sol–gel processing and electrostatically assisted solution blow spinning (E-SBS). The prepared SANF sponges have a low density (10.63 mg cm −3 ), high compressibility, and low thermal conductivity. Moreover, they have excellent flexibility at − 196 ∼ 1300 °C, a strain-independent zero Poisson’s ratio, and good compression resilience without structural damage. Furthermore, with their low thermal conductivity (0.026 W m −1 K −1 ) and has good interception efficiency (> 99.3 %) against particles of different diameters at 1000 ℃. After undergoing electrostatic removal treatment, the SANF sponge demonstrates remarkable performance stability, maintaining filtration efficiency above 98 % while achieving an exceptional dust holding capacity of 101.2 g m −2 through 40 days of continuous operation. This breakthrough performance represents a significant advancement over conventional nanofiber membrane materials, which have historically suffered from limited dust retention capabilities. We prepared SANF sponges are promising candidates to replace existing thermal insulation and high temperature filtration materials, providing new insights for the development of next-generation thermal insulation and high temperature filtration materials.
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CHEMICAL ENGINEERING JOURNAL
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2025
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IF 13.2
Hua Ma,Xueyang Liu,Jingxian Wang,Yuhan Cai,Jiaoyang Huang,Mengting She,Liping Chen,Hanwen Zhang,Hua Wang,Siwei Xiong
Polymer fiber-based insulating paper is widely utilized in electrical equipment for insulation and protection. However, with the miniaturization of electrical systems, conventional insulating paper struggles to balance space constraints and performance, limiting its application in high-performance devices. This study introduces polyarylate (PAR) nanofibers, fabricated via melt spinning and mechanical disintegration, followed by scalable hot pressing to produce ultra-thin PAR nanofiber membranes with a thickness of 30 μm, which is 40 % thinner than commercial aramid paper. The high orientation and dense inter-fiber network of PAR nanofibers effectively mitigate electric field distortion, resulting in a breakdown field strength of 71.46 kV/mm, which is 251.5 % higher than commercial aramid paper. Notably, the PAR nanofiber membranes exhibit exceptional structural stability under multi-physical environmental conditions. After prolonged thermal aging (250 °C for 24 h), UV exposure (365 nm for 48 h), repeated folding, and multiple kneading cycles, they retained breakdown strengths of 17.73 kV/mm, 25.19 kV/mm, 15.86 kV/mm, and 13.8 kV/mm, respectively. In contrast, commercial Aramid paper exhibited a marked decline, with breakdown strength decreasing to 11.32 kV/mm, 14.8 kV/mm, 7.75 kV/mm, and 9.97 kV/mm under the same conditions. Moreover, the thermoplastic nature of PAR nanofiber membranes enables closed-loop recycling, reducing material waste while preserving performance and presenting a sustainable and scalable approach for next-generation high-performance insulating materials.
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FOOD RESEARCH INTERNATIONAL
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2025
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IF 8
Weilong Peng,Yaya Wang,Lijun Wang,Weimei Wang,Junjie Huang,Ruigang Zhou,Ruonan Bo,Cuiyan Liu,Mingjiang Liu,Jingui Li
This study aimed to develop a straightforward and efficient method for screening natural deep eutectic solvent (NADES) with high extraction yield of polysaccharides from Moringa oleifera Lam. ( M. oleifera ) leaves and to elucidate the solubilization mechanism of this eco-friendly extraction solvent. Traditional extraction methods are often limited by low efficiency, long processing times, and environmental hazards, which hinder the advancement of polysaccharide applications. In this study, the conductor-like screening model for realistic solvents (COSMO-RS) was adopted to prognosticate the solubility of biomolecules, and the M. oleifera polysaccharide (MOLP) solubility of 32 NADESs was appraised. Based on the solubility and activity coefficient results, we meticulously selected eight highly efficient NADESs combinations and conducted practical verification. The Bet-LA (Betaine- Lactic acid) combination demonstrated the highest extraction efficiency for MOLP, achieving an ultrasonic-assisted extraction rate 2.67-fold higher than that of the conventional ethanol solvent. The dissolution mechanism was further elucidated using frontier molecular orbital (FMO) and reduced density gradient (RDG) analyses. Antioxidant assays demonstrated that polysaccharides extracted by Bet-LA exhibited superior biological activity. These findings establish an efficient NADES screening protocol and provide mechanistic insights for optimizing M. oleifera leaves polysaccharide extraction.
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APPLIED ORGANOMETALLIC CHEMISTRY
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2025
·Vol. 39
·期 7
·e70261
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IF 0
Jiale Tong,Wanjun Tang,Tingcheng Li,Qingliang You,Guangyong Xie
Controlled synthesis of catalysts with a regulated structure has attracted a great deal of interest in the field of heterogeneous catalysis research. In this study, microporous spherical vanadium–phosphorus (VPO) composite oxide catalysts were successfully fabricated through a hydrothermal method with glucose as the assisting agent. The catalysts were characterized using XRD, SEM, TEM, FT-IR, XPS, BET, H 2 -TPR, NH 3 -TPD, and N 2 adsorption–desorption measurements. It was found that the morphology and structure of the as-obtained VPO_G x catalysts were strongly influenced by the amount of glucose used during the synthesis process. All VPO_G x catalysts exhibited a pure orthorhombic VOPO 4 phase regardless of the presence or absence of glucose. The VPO_G 0 catalyst, synthesized without the addition of glucose, consisted of irregular micron-sized particles lacking surface pores. In contrast, the VPO_G 0.5 catalyst, prepared with glucose addition at a 0.5 molar ratio of C 6 H 12 O 6 to V 2 O 5 , formed nearly uniform porous microspheres with an approximate size of 20 μm. Compared with the VPO_G 0 catalyst, the VPO_G 0.5 catalyst displayed the lowest crystallinity of the VOPO 4 phase, accompanied by a 20-fold enhancement in a specific surface area and a fivefold increase in pore volume. Moreover, the VPO_G 0.5 catalyst demonstrated an almost 90°C lower reduction temperature for pentavalent vanadium and possessed nearly 10 times the amount of total acidic sites. Simultaneously, it exhibited a high stability in morphology and structure. These modifications collectively played a crucial role in enhancing the catalytic performance. As a result, the VPO_G 0.5 catalyst exhibited optimal catalytic activity and selectivity for the ammoxidation of 2,6-dichlorotoluene to 2,6-dichlorobenzonitrile when compared with the VPO_G 0 and other VPO_G x catalysts. Specifically, it reached a nearly 10% increase in yield and a 5% increase in selectivity relative to the VPO_G 0 catalyst. The VPO_G 0.5 catalyst was one of the most active catalysts among all reported VPO composite oxides.
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Chemical Engineering Journal Advances
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2025
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IF 7.1
Amare Aregahegn Dubale,Borsamo Boroje,Workineh Mengesha Fereja,Wei-Qi Wang
The use of herbicides in farming to manage growth, combat pests, and enhance crop production ultimately contributes to environmental pollution. However, the removal of these herbicides remains challenging due to high costs, limited adsorption efficiency, complex synthesis, and poor stability of the adsorbents. In this study, we synthesized a nickel oxalate metal-organic frameworks like coordination compound (Ni-Ox) using a straightforward hydrothermal method for the adsorptive removal of 2,4-dichlorophenoxyacetic acid (2,4-D) from wastewater samples. The adsorbent exhibited a unique morphology with a mesoporous structure, abundant functional groups, and a homogeneous elemental composition and distribution, as characterized by X-ray diffraction (XRD), Fourier transform infrared (FTIR), scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), high-angle annular dark-field scanning transmission electron microscopy (HAADF-STEM) and Brunauer-Emmett-Teller (BET) analysis. Ni-Ox demonstrated an exceptionally high removal efficiency of 99.7% for 2,4-D under optimal adsorption conditions: pH 2, contact time of 60 minutes, dose of 80 mg, stirring speed of 120 rpm, batch volume of 50 mL, and an initial concentration of 100 mg L⁻¹. The adsorption of 2,4-D on Ni-Ox was best described by the Langmuir model, with a maximum theoretical adsorption capacity of 384.6 mg g⁻¹ at 298 K. The kinetic data were best fitted by the pseudo-second-order model, yielding a rate constant of 2.8 × 10⁻³ g mg⁻¹ min⁻¹ and a q e value of 60.98 mg g⁻¹. Thermodynamic analysis indicated that the adsorption process was both endothermic and spontaneous, as evidenced by a positive ΔH° (+65.9 kJ mol⁻¹) and negative ΔG° values. The adsorption mechanism of 2,4-D on Ni-Ox was elucidated through post-characterization using XPS, FTIR, and XRD, and was found to be primarily driven by electrostatic attraction, hydrogen bonding, and van der Waals forces. Furthermore, Ni-Ox maintained an efficiency of over 80% even after multiple regeneration and reuse cycles. These findings provide valuable insights for the design of effective adsorbents for the herbicide removal from aquatic environment.
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ACTA MATERIALIA
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2025
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IF 9.3
Xing Fan,Zhongxiao Song,Yangyang Liu
The practical implementation of zinc (Zn) metal anodes in large-scale aqueous energy storage systems is severely hindered by interfacial instabilities, including dendritic Zn growth, parasitic hydrogen evolution, and self-corrosion. Here, we report a mechanism-driven interfacial design strategy guided by the mass–charge transfer equilibrium within the electric double layer, which dictates the Zn nucleation and growth behavior. Based on this insight, we construct a corrosion-resistant TaF x (TF) interphase via magnetron co-sputtering, which mitigates ion depletion near the Zn surface and promotes spatially uniform Zn electrodeposition. Concurrently, the TF layer elevates the energy barrier for hydrogen evolution and imparts robust corrosion resistance, thereby suppressing interfacial side reactions. These synergistic effects collectively enable planar, dendrite-free Zn deposition and stripping over 1,000 cycles with a high Coulombic efficiency of 99.87%. When integrated into a full-cell configuration with a NH 4 V 4 O 10 cathode, the TF-modified Zn anode retains 82.5% of its initial capacity after 250 cycles at a current density of 0.5 A g -1 . This work establishes a mechanistic framework for interfacial engineering of Zn metal anodes and offers a broadly applicable strategy for stabilizing high-performance AZIBs.
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Materials Horizons
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2025
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IF 10.7
Yuzhang Xiao,Zhi Gao,Weihao Lin,Guangyao Yang,Sikai Peng,Yihong Tong,Weiliang Peng,Bin Yuan,Renzong Hu,Wei Min Huang
In the recycling process of spent lithium-ion batteries (SLIBs), rapid and effective separation of cathode material and current collector aluminium (Al) foil is a significant and difficult step. However, traditional separation methods have some drawbacks including high energy consumption, expensive and toxicity. In this study, we select oxalic acid (OA), a green and low-cost simple organic acid, as the separating agent. Within 10 minutes oxalic acid treatment, above 99% of the nickel-manganese-cobalt (NCM) cathode materials are separated from current collector Al foil. The mechanism analysis shows that the reaction of oxalic acid with the surface of Al foil can destroy the connection between Al foil and adhesive, while the oxalate protective layer formed on the surface of NCM cathode material prevent further corrosion of NCM cathode material, maintaining a good structural integrity. This green and efficient separation method provides an economical and viable solution for SLIB regeneration or upcycling.
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TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
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2025
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IF 4.7
Tao-tao LI,Jin-peng QU,Lu-lu ZHAO,Peng-fei WANG,Jun-hong ZHANG,Ting-feng YI
To explore high-performance cathode materials for aqueous ammonium ion batteries (AAIBs), vanadium-based Prussian blue analogue composites (VFe-PBAs) were prepared by hydrothermal coprecipitation method to enhance the reversible storage of NH 4 + . Benefiting from the stable three-dimensional structure and spacious gap position, VFe-PBAs-2 cathode displays excellent electrochemical activity and rate performance, achieving a high specific capacity of 84.3 mA·h/g at a current density of 1000 mA/g. In addition, VFe-PBAs-2 cathode also shows impressive long-term cycle durabilitywith 85.2% capacity retention after 3×10 4 cycles at 5000 mA/g. The synthesized cathode materials combined with the high electrochemical activity of vanadium ions significantly promote the rapid transfer of NH 4 + . Furthermore, NH 4 + embedding/extraction mechanism of VFe-PBAs-2 cathode was revealed by electrochemical kinetics tests and advanced ex-situ characterizations. The experimental results demonstrate that vanadium-modified VFe-PBAs-2 as a cathode material can remarkably improve the capacity, electrochemical activity and cycling stability of AAIBs to achieve high performance NH 4 + storage.
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ANALYTICAL CHEMISTRY
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2025
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IF 6.7
Xiwang Hou,Tianhao Chen,Minggang Zhao,Ye Ma
The development of tunable metamaterials has attracted increasing attention. However, achieving real-time modulation of the optical properties remains a significant challenge. Stimuli-responsive polymers with their rapid response characteristics offer new opportunities for applications in optical modulation and sensing. Here, we propose a novel approach for controlling interparticle spacing and pH sensing by constructing a plasmonic metasurface via self-assembly of nanoparticles (NPs) at the liquid–liquid interface. Variations in the surface plasmon resonance peak position and reflectance in the reflection spectrum indicate changes in the interparticle spacing within the metasurface. Furthermore, pH variations in the aqueous phase modulate the intensity of the Raman characteristic peaks in surface-enhanced Raman scattering spectra. We demonstrate that AuNPs modified with poly(4-vinylpyridine) (P4VP) exhibit reversible pH-responsive behavior. The pH-induced coupling and decoupling of plasmonic modes enable tunable interparticle distances from 14 to 2.2 nm and linear pH sensing over a broad range of pH 3 to 11. The sensing performance has also been validated in practical samples.
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Nature Communications
·
2025
·Vol. 16
·期 1
·1-16
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IF 15.7
Liu Ya,Yang Jiajia,Wang Yuxian,Zhu Wanli,Hu Kunsheng,Liu Zhang,Yeung Kinglun,Zhu Zhong-Shuai,Chen Chunmao,Duan Xiaoguang,Wang Shaobin
Compositional heterogeneity in metal/nitrogen-doped carbons (M-N-Cs) complicates the fundamental elucidation of the intricate interplay between the active metal species that rule the reactivity of single atomic catalysts (SACs). This study unveils the electronic disruptions of cobalt nanoparticles (Co NPs) to the catalytic behaviors of cobalt single-atom (Co SA). The intense electronic communications between high-density Co NPs and Co SA sites lead to dissociation O 3 on the high-spin Co SA sites to generate surface-confined hydroxyl radicals ( • OH). However, the tandem electron transfer yields superoxide radical (O 2 •– ) with low reactivity and remarkably reduce ozone utilization efficiency (OUE). In contrast, independent Co SA sites far or free from adjacent Co NPs induce a nonradical O 3 activation regime, which markedly improves electron utilization efficiency (~2.9-fold), OUE ( ~ 3.0-fold), and turnover frequency (TOF, ~2.5-fold) of Co SA. The nonradical catalytic ozonation process demonstrates high adaptability to complex water matrices and maintains long-term stability in the treatment of real petrochemical wastewater. The deciphered electronic interplays between metal nanoparticles and single atom sites advance a new paradigm to regulate the selectivity of single atom catalysis.
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Journal of Hazardous Materials Advances
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2025
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IF 7.7
Shiyu Cao,Furong Guo,Meiqi Li,Xin Zhang,Yifu Xu,Jiangshan Li
Roxarsone (ROX), a widely used organic arsenic feed additive, enters paddy soils through animal manure fertilizer, posing serious risks to environmental and human health. However, the underlying mechanisms of ROX stabilization, particularly the role of soil cultivation duration, remain poorly understood. Here, we compared ROX stabilization in new paddy soil (NPS, 10-year cultivation) and old paddy soil (OPS, 100-year cultivation). NPS exhibited higher ROX stabilization ability than OPS, as evidenced by a 1.5-fold higher adsorption rate constant, a 28-fold higher organic carbon-normalized partition coefficient (K oc ) and retention of 13-fold more arsenic in the residual fraction (non-extractable arsenic). The improved adsorption and stability in NPS were mainly due to complex formation between nitrogen-rich organic matter and Fe(II). In-situ spectroscopic and electrochemical analyses revealed that the complex promote ROX fixation by forming a Fe(II)-ROX-N ternary configuration. This structure was derived from the bidentate binuclear binding of As(V) with iron sites and deprotonated N-containing functional groups. These findings provided mechanistic insights into organic arsenic adsorption in soils and offered theoretical guidance for optimizing soil composition management strategies.
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Journal of Energy Chemistry
·
2025
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IF 14.9
Guomin Li,Lei Lei,Yanyi Wang,Hongwei Mi,Chuanxin He,Ning Zhao,Peixin Zhang,Dingtao Ma
To advance the application of layered oxide cathodes in fast-charging sodium-ion batteries, it is crucial to not only suppress irreversible phase transitions but also improve the rate capability of cathode materials and optimize Na + diffusion kinetics to ensure high capacity output at various charge-discharge rates. In this research, the targeted F-substitution with a heavy ratio in oxygen anion layer optimizes the Na + diffusion path and electronic conductivity of the material, thereby decreasing the Na + diffusion barrier and imparting high-rate performance. At a 20 C rate, the cathode achieves a capacity of over 80 mAh g −1 with stable cycling performance. Additionally, the dual rivet effect between the transition metal layer and oxygen layer prevents significant phase transitions during charge/discharge within the 2–4.2 V range for the modified cathode. As a result, the F-substituted oxygen anion layer improved Na + diffusion, electronic conductivity, and crystal plane structure stability, which led to the development of a high-performance, fast-charging sodium-ion battery (SIB), opening new avenues for commercial applications.
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