SEPARATION AND PURIFICATION TECHNOLOGY
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2026
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IF 9.1
Shiyu Zhang,Zhiruo Li,Jia Tong,Xingxing Shi,Yue Xu,Lijuan Zhang,Haikuan Yuan,Yan Zhang,Jie Lu
A chiral metal-organic framework, [Zn( NCG )bpy] n (NCG = N-(4-aminobenzoyl)- L-glutamic acid; bpy = 4,4′-bipyridine), was meticulously designed and synthesized for the first time and thoroughly assessed for its extensive chiral recognition abilities. This MOF features an average pore size of 7.12 nm and is constructed from enantiopure N-(4-aminobenzoyl)-L-glutamic acid ligands, which provide functional sites for the highly enantioselective adsorption and separation of various chiral compounds. The chiral recognition ability of [Zn( NCG )bpy] n was initially tested with batch adsorption of ( R )- and ( S )-dropropizine enantiomers at various starting concentrations and solution pH levels. A dispersive solid-phase extraction (dSPE) strategy coupled with high-performance liquid chromatography (HPLC) was then employed to assess its competitive chiral resolution efficacy toward four structurally distinct racemates: ( R , S )-dropropizine, ( R , S )-tetramisole hydrochloride, (D,L)-phenylalanine, and (D,L)-aspartic acid. The [Zn( NCG )bpy] n exhibited remarkable enantioseparation capability toward smaller amino acid molecules, with an enantiomeric excess ( ee ) of 46.17 ± 1.39% and a separation factor of 2.72 ± 0.10 for (D,L)-phenylalanine in a single batch separation. X-ray photoelectron spectroscopy (XPS), combined with the Independent Gradient Model based on Hirshfeld partition (IGMH) isosurface analysis and binding energy computations, elucidated the underlying recognition mechanism at the atomic level. The results conclusively showed that chiral resolution is primarily regulated by non-covalent host-guest interactions.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
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2026
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IF 12.5
Runfeng Zhang,Yan Zhang,Hai Yu,Zongmao Lv,Jie Liu,Xiaogang Luo,Xuejing Zheng,Keyong Tang
A rationally designed MWCNT-COO-MXene/PNIPAM-PAM bilayer hydrogel actuator. • Covalent heterostructure enables rapid photothermal actuation and self-sensing. • Excellent mechanical strength and reversible biomimetic shape-morphing. • An integrated device couples NIR-driven motion with real-time resistance feedback. Stimulus-responsive hydrogels hold great potential in soft robotics, yet conventional PNIPAM hydrogels are limited by slow response speed, single functionality, and poor mechanical strength. Introducing photothermal fillers such as MXene and carbon nanotubes (CNTs) is an effective strategy to enhance their performance. However, conventional physical blending results in weak interfacial interactions, filler aggregation and limited performance enhancement. Here, we address this challenge by constructing a covalent MWCNTs-COOH@MXene heterostructure via EDC/NHS-mediated esterification, which serves as an efficient conductive and thermal network within the PNIPAM matrix and is firmly integrated with the polyacrylamide (PAM) passive layer through interfacial interpenetration. Compared with the physically blended counterpart, the covalently bonded hydrogel exhibits significantly enhanced thermal conductivity (1.49 W/(m·K)) and higher photothermal conversion efficiency (45.03%). The bilayer actuator exhibited rapid and reversible bending with a response time of 10 s, reaching a maximum bending angle of 420° under thermal stimulation and 80° under NIR light. The actuation amplitude could be controlled by adjusting the thickness ratio of the layers, temperature, and light parameters. Leveraging the efficient photothermal conversion and internal heat conduction of the MWCNTs-COOH@MXene heterostructure, the hydrogel achieved fast light-driven deformation and enabled biomimetic applications such as flower-like opening/closing, target grasping, and autonomous swimming. By integrating actuation and sensing functions, an NIR-light-controlled switch was realized that performed photomechanical actions while providing real-time state feedback through resistance monitoring. This work provides a new material platform and design strategy for high-performance soft robots and intelligent actuators with integrated functionalities. Download: Download high-res image (420KB) Download: Download full-size image
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Environmental Technology & Innovation
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2026
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IF 7.3
Siyao Wang,Lei Wen,Zhimin Xu,Gang Chu,Kexin Chang,Hongbo Peng,Dandan Zhou,Peng Gao,Yang Liu,Bo Pan
Biochar (BC)-mediated aerobic oxidation of arsenite (As(III)) has been reported, but the coupling among phenol-quinone redox cycling, O 2 activation, and pH-regulated H 2 O 2 formation remains insufficiently resolved. In this study, pine-sawdust-derived BC and molecular analogues of phenolic/quinoid moieties, hydroquinone (HQ) and 1,4-benzoquinone (BQ), were used to examine As(III) oxidation at pH 3.0, 7.0, and 9.5 under oxic and oxygen (O 2 )-limited conditions. Under oxic conditions, BC oxidized 42.4%, 21.6%, and 74.7% of As(III) after 24 h at pH 3.0, 7.0, and 9.5, respectively, whereas arsenate (As(V)) formation was negligible under O 2 -limited conditions. BC generated hydrogen peroxide (H 2 O 2 ) in air-equilibrated suspensions, with maximum concentrations of 88.5, 38.8, and 204.2 μM at pH 3.0, 7.0, and 9.5, respectively·H 2 O 2 -associated pathways contributed an estimated 69.2%, 77.2%, and 67.4% to As(III) oxidation at pH 3.0, 7.0, and 9.5, respectively. Superoxide dismutase suppressed O 2 •- generation without affecting H 2 O 2 accumulation or As(III) oxidation, indicating that O 2 •- primarily served as an intermediate in H 2 O 2 formation. Tert-butanol negligibly altered As(V) formation, consistent with the absence of detectable •OH. The BQ/HQ model system confirmed the chemical feasibility of quinone reduction, HQ re-oxidation by O 2 , and associated H 2 O 2 generation, but it should be interpreted as a molecular analogue rather than direct proof of the heterogeneous BC surface mechanism. Overall, BC mediates As(III) oxidation mainly via O 2 -dependent H 2 O 2 production promoted by phenol-quinone-like redox cycling, while the non-monotonic pH trend (pH 9.5 > pH 3.0 > pH 7.0) reflecting the combined effects of As(III) speciation, surface redox behavior, and H 2 O 2 availability.
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ELECTROCHIMICA ACTA
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2026
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IF 5.8
Ying Zhang,Guoliang Zu,Han Sun,Zhenchao Li,Serge Cosnier,Aihua Liu
NiFe PBA exhibits laccase-mimic for ORR and electrocatalyze oxidation of CC and HQ. • A self-powered sensor by assembling NiFe PBA as both anode and cathode catalyst. • The sensor capable of detecting CC or HQ in simulated wastewater satisfactorily. Biofuel cells are widely applied in designing self-powered sensors (SPS) due to their rich fuel source, environmental friendliness, and advantages in operating under neutral pH and room temperatures. However, they are limited by inherent drawbacks of biological enzymes as catalysts, such as poor stability and high costs, greatly restricting their real applications. Herein we report on NiFe Prussian blue analogue (PBA) nanocubes with good mimicking laccase activity, which can not only exhibit excellent oxygen reduction reaction in the absence of electron mediators, but also efficiently electrocatalyze the oxidation of phenolic fuels. Subsequently, a dual-chamber enzyme-free fuel cell was constructed using NiFe PBA as both the anode and cathode catalysts as well as catechol (CC)/hydroquinone (HQ) as the fuel. Based on this, a SPS was developed to detect CC or HQ. The maximum power density ( P max ) of the HQ-fueled sensor is linear within 0.5 μM–5 mM HQ in three parts. Similarly, the P max for CC-fueled sensor is linear with 5 μM–5 mM CC in three parts. Moreover, the sensor has excellent selectivity and is capable of monitoring simulated wastewater. Thus, this work demonstrates an efficient enzyme-free biofuel cells based SPS using the same nanomaterial as anode and cathode catalyst. Download: Download high-res image (271KB) Download: Download full-size image
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Food Chemistry-X
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2026
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IF 9.2
Junxiong Hao,Yingying Yang,Jie Liu,Fei Shen,Ying Chen,Xiaoxia Zuo,Jing Wang,Liqin Zhu,Yonggen Shen,Rui Shi,Hongliang Yao,Libin Wang,Zhipeng Cai
Blackening of Allium chinense at 70–80 °C enhanced total acidity and reducing sugars, producing a pleasant sweet-sour flavor. Total phenolic content increased from 10.20 to 94.54 mg GAE/g at 75 °C, with enhanced antioxidant capacity (DPPH 66.73%, ABTS 90.59%, FRAP 113.40 μg AAE/g). Non-targeted metabolomics revealed marked reduction of γ-glutamyl-S-allyl-L-cysteine (GSAC) and related γ-glutamyl dipeptides, responsible for the characteristic pungency of fresh A. chinense , alongside upregulation of terpenoids, alkaloids, and flavonoids (2- to 5-fold). Blackening at 75 °C yielded optimal flavor, color, texture, and bioactivity, with 5-HMF accumulation (166 μg/g) within safe limits. This study provides insights into physicochemical and metabolic changes during blackening, offering a foundation for optimizing functional blackened A. chinense production.
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CHEMICAL ENGINEERING SCIENCE
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2026
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IF 5.1
Lujie Sheng,Qingdi Mu,Haoyu Shi,Xianzhi Wang,Jizhong Ren
Carbon molecular sieve (CMS) membranes derived from metal-organic frameworks (MOFs)-doped mixed matrix membranes (MMMs) are highly appealing for gas separation applications. However, there remains a significant lack of in-depth understanding of their nanoporous structures. Herein, ZIF-8-doped MMMs-derived CMS membranes were systematically investigated via in-situ scanning electron microscope (SEM) and in-situ X-ray diffraction (XRD) to monitor the real-time evolution of their microstructures during the pyrolysis process. Meanwhile, gas molecules were employed as molecular probes to elucidate the nanoporous architectures of the resultant mixed matrix CMS membranes. We found that ZIF-8 nanoparticles underwent structural collapse (with particle size shrinkage) and achieved in-situ amorphization and carbonization within the MMMs matrix. Furthermore, the Zn species underwent a sequential phase transformation from ZnF 2 , ZnO to metallic Zn embedded in the carbon matrix, which may be conducive to the gas separation. The 6FDA-DAM polyimide precursor was converted into amorphous carbon molecular sieves after pyrolysis. Notably, the formation process of interfacial defects between the polyimide matrix and ZIF-8 particles was directly visualized via in-situ SEM, which was not conductive to enhance gas selectivity of the MMMs-derived CMS membranes. These novel findings provide valuable insights for the rational design and fabrication of high-performance mixed matrix CMS membranes.
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JOURNAL OF FOOD ENGINEERING
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2026
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IF 5.8
Qiao Chen,Hai-Xia Xu,Ji-Guang Chen,Lin Dai,Bao-Geng Fu,Qing-Feng Zhang
HP-β-CD and M-β-CD exhibited stronger complexation capacity with quercetin (Que) than native β-CD. • The solid complexes of Que and β-CD derivatives were prepared by spray-drying. • The complexes significantly improved the dissolution and solubility, and suppressed the recrystallization of Que. • M-β-CD carrier exhibited better bioavailability enhancement effects on Que in rat than HP-β-CD. Quercetin (Que) is a common flavonol with diverse biological activities. Cyclodextrins (CD) were used to enhance the oral bioavailability of Que and the underlying mechanisms were explored anew. The complexation reactions between Que and β-CD, 2-hydroxypropyl-β-CD (HP-β-CD) and methyl-β-CD (M-β-CD) were characterized by phase-solubility analysis and UV-Vis spectroscopic titration. The results revealed that HP-β-CD and M-β-CD exhibited stronger complexation capacity than native β-CD. It was novelty discovered that the reversible complexation reaction effectively suppressed the recrystallization of supersaturated Que. The solid complexes of Que with HP-β-CD and M-β-CD were prepared by spray drying with a drug loading capacity of 4.67 ± 0.08%. The SEM, XRD and DSC analyses showed Que lost its crystal structure in the complexes, while FTIR revealed the interactions between Que and CDs. The complexes significantly improved the dissolution and solubility of Que. In addition to being dissolved, approximately 25% Que existed in nanoparticle form in simulated gastrointestinal fluids. M-β-CD effectively maintained the particles in nanoscale, whereas HP-β-CD failed. After oral administration, Que mainly exists in rat circulating blood as glucuronide metabolites. Pharmacokinetics revealed that, compared with free Que, M-β-CD and HP-β-CD complexes did not significantly increase the blood concentration of Que, but increased the AUC (0-t) of quercetin glucuronide metabolite (Que-Glu) by 7.52 times and 4.44 times, respectively. The primary novelty of this work is the finding that in addition to solubility improvement, the suppression of Que recrystallization through CD complexation is also an important mechanism for bioavailability enhancement. Download: Download high-res image (282KB) Download: Download full-size image
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DESALINATION
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2026
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IF 9.9
Jilong Han,Ruyi Shi,Mochi Li,Huanzhang Lu,Yijian Zheng,Pengfei Li,Jisheng Li
Dense LLTO-Al 2 O 3 membrane (∼20 μm) for /Li + from high Mg 2+ /Li + brine. • Optimised LLTO (x = 0.11, 1250 °C/6 h): tetragonal, 3.26 × 10 3 S/cm. • La-poor/La-rich enables 2D Li + transport; Mg 2+ blocked by size. • Intergranular defects are main pathway for Mg 2+ co-permeation. • Selectivity 16.06, 99.61% Mg 2+ rejection (6 h); energy 23.21 kW·h (24 h). To solve the problem of lithium extraction from salt lake brine with a high magnesium‑lithium ratio, a composite ceramic membrane electrodialysis technology based on perovskite-type superionic conductor Li 3x La 2/3-x TiO 3 (LLTO) was proposed. LLTO powder was synthesised by the sol-gel method. The lithium doping amount (x = 0.11), sintering temperature (1250 °C) and time (6 h) were systematically optimised to obtain tetragonal LLTO with high ionic conductivity (3.26 × 10 −3 S/cm). Then, the LLTO-Al 2 O 3 composite film was prepared by a spin coating process (PVA content of 20%, LLTO solid content of 0.08 g/mL, spin coating 10 times) with porous alumina as the substrate. After calcination at 1275 °C for 6 h, a dense film with a thickness of about 20 μm was formed. Molecular dynamics simulations show that the two-dimensional selective transport of Li can be realised in the LLTO inner layer based on the La-poor / La-rich alternating structure, while Mg 2+ is hindered by the size effect. Intergranular defects are the main pathway leading to the co-permeation of Mg 2+ . The electrodialysis experiment showed that the membrane had good selectivity (selectivity coefficient 16.06) and Mg 2+ rejection rate (99.61%) for Li at the initial stage of operation (6 h), and the energy consumption was 23.21 kWh after 24 h of electrodialysis. This study provides a reference for membrane material design, preparation process and transmission mechanism for lithium extraction from high magnesium‑lithium ratio brine, and has potential application value.
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Surfaces and Interfaces
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2026
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IF 6
Haoran Sui,Yanhua Lei,Chengzhi Zhang,Kai Sun,Yanbin Guo,Dmitry A. Vorontsov
Ship icing poses significant safety and operational risks. Although superhydrophobic coatings (SHCs) offer a promising passive anti-icing strategy, their practical application is limited by factors such as poor durability, the environmental constraints of single-function de-icing methods, and ecological issues associated with fluorinated materials. To address these challenges, this study has designed a novel fluorine-free multifunctional superhydrophobic coating that integrates photothermal effects and self-healing capabilities. The coating uses γ-aminopropyltriethoxysilane (KH-550) as the key modifier for the fluorine-free modification of epoxy resin; the surface layer achieves self-healing superhydrophobic functionality through the thermal mobility of beeswax, while the bottom layer consists of acetylene black and nanoscale graphite powder to form a conductive network. Leveraging its photothermal and electrothermal effects, the coating can melt accumulated ice via rapid photothermal heating (reaching approximately 90 °C within 300 s). Additionally, through heat-induced conduction of beeswax, the coating can autonomously restore its superhydrophobicity after mechanical or chemical damage and maintain performance over multiple cycles. The resulting coating exhibits strong adhesion to the substrate. After immersion in a 3.5 wt.% NaCl solution for 14 days, its corrosion current density is only 2.56 × 10 –10 A/cm 2 , representing a 99.47% improvement compared to silicon-modified epoxy resin (Si-EP). Furthermore, even under prolonged sand particle erosion, the coating retains long-lasting superhydrophobicity. This study provides a promising and scalable strategy for advanced anti-icing applications in marine environments by synergistically combining environmental friendliness, photothermal de-icing, self-healing durability, and enhanced corrosion resistance in a fluorine-free system. Download: Download high-res image (298KB) Download: Download full-size image
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高影响因子
COMPOSITES COMMUNICATIONS
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2026
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IF 8.6
Hailong Liu,Mingzhan Li,Yiqi Wu,Yuan Li,Li Yin,Yinchuan Pu,Gang Li,Yudong Huang
Electrostatic self-assembly of PPI and MXene creates a multifunctional interface on carbon fibers. • Interfacial shear strength increases by 43.9%, and flame retardancy reaches UL-94 V-0 rating. • The HRR is reduced by 53.4%, and COp by 76.9%. • The inherent trade-off between flame retardancy and mechanical properties in CFRPs is overcome. • This mild modification method not only preserves fiber tensile strength but also enhances surface energy and wettability. The practical application of carbon fiber-reinforced epoxy resin composites (CFRPs) is hindered by weak fiber-matrix interfacial adhesion and the inherent flammability of epoxy resins. In this study, a multifunctional integrated interface was innovatively constructed on the carbon fiber surface via electrostatic self-assembly of polyhedral oligomeric silsesquioxane based nanocomponents (PPI) and MXene nanosheets. This mild modification strategy preserves the intrinsic tensile strength of the fibers while significantly enhancing surface wettability and surface energy. The resulting PPI-MXene hybrid interface substantially improves interfacial adhesion, achieving a 43.9% increase in interfacial shear strength compared to unmodified CFRPs. The optimal composite, 5-MPCF/EP, exhibits outstanding mechanical performance, with interlaminar shear strength, flexural strength, and unnotched impact strength increased by 30.9%, 30.1%, and 50.6%, respectively. Moreover, the integrated interface endows the composites with exceptional flame retardancy, achieving a UL-94 V-0 rating and a limiting oxygen index of 35.4%. Cone calorimetry tests reveal significant reductions in peak heat release rate (53.4%), total heat release (33.2%), and carbon monoxide production (76.9%). The synergistic flame-retardant mechanism involves physical barrier formation, radical scavenging, catalytic carbonization, and thermal reflection. This work overcomes the longstanding trade-off between flame retardancy and mechanical properties in CFRPs, offering a promising strategy for developing high-performance, fire-safe composites. Download: Download high-res image (417KB) Download: Download full-size image
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JOURNAL OF MEMBRANE SCIENCE
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2026
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IF 8.8
Chen Wang,Chenxuan Shao,Houyi Peng,Yanchen Liu,Qi Zhang,Xiaohui Ju,Weixing Li
Precise control over the pore size of polyamide nanofiltration membranes is critical for achieving efficient separation between small-molecule biological substances and inorganic salts. However, general polyamide membranes of negatively charged exhibit limited pore-size tunability due to the rapid kinetics of interfacial polymerization, which severely compromises the separation efficiency between small molecules and inorganic salt ions. Herein, a pore-size engineering strategy for interfacial polymerization was proposed by introducing a zwitterionic triamine monomer, tris(2-aminoethyl)amine N-oxide (TRENO) into the piperazine (PIP) aqueous phase to react with trimesoyl chloride (TMC). The strong hydrophilicity of TRENO retards the diffusion of monomers to organic phase, thereby yielding a thinner polyamide layer. Meanwhile, its triamine structure renders the polyamide layer denser and decreases pore radius from 0.35 nm to 0.28 nm. Furthermore, the multi-amine structure of TRENO increases the crosslinking density of the polyamide layer by consuming more acyl chloride groups, thereby reducing the formation of hydrolyzed carboxyl groups on membrane surface. It lowers the surface negative charge and weakens Donnan exclusion effects, allowing small charged solutes such as inorganic salts and amino acids to permeate more readily. As a result, the optimal membrane achieves a pure water flux of 86.0 L m −2 h −1 (nearly three times that of the pristine membrane), and when tested with a ternary mixture of cordycepin, KH 2 PO 4 and FeCl 2 , it exhibits a high cordycepin rejection of 83.6%, low salt rejection, and a cordycepin/KH 2 PO 4 selectivity of 5.65. It also exhibits excellent stability and high flux recovery ratio (FRR) of 93%. This work proves that zwitterion-modulated interfacial polymerization offers a viable route to address the trade-off between selectivity and permeability in biomolecule purification.
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高影响因子
JOURNAL OF MEMBRANE SCIENCE
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2026
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IF 8.8
Junyuan Hua,Quan Li,Hongchang Pei,Lei Zhang,Xianhui Li
Lithium is a strategic critical metal underpinning the global low-carbon transition and new energy industry upgrading. China's salt lake brines generally feature low lithium grades and extremely high Mg/Li mass ratios, creating a core technical bottleneck for efficient lithium recovery. Herein, we design and synthesize bis(4-aminophenyl) phosphate (DAHP) as a functional comonomer, inspired by the ion transport mechanism of phospholipid cell membranes. Phosphate-functionalized polyamide NF membranes (denoted DPA) are subsequently fabricated via interfacial polymerization. Characterizations confirm that DAHP is covalently integrated into the polyamide network, simultaneously elevating surface negative charge density and selective layer crosslinking, narrowing pore size distribution, and optimizing pore channel structure. The DPA membrane achieves a MgCl 2 rejection of 97.6% and a Mg 2+ /Li + separation factor as high as 164 in a mixed system with a Mg/Li mass ratio of 100. The phosphate groups exert a synergistic effect of electrostatic Li + enrichment and coordination-mediated dehydration, significantly lowering the transmembrane energy barrier of Li + and facilitating its preferential transport. This work provides a novel biomimetic design strategy for developing high-performance NF membranes for lithium extraction from high-Mg/Li salt lake brines.
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危险品化学品经营许可证（带存储）