JOURNAL OF MEMBRANE SCIENCE
·
2026
·
IF 8.8
Wei Qin,Sha Wang,Limin Xu,Junwei Wang,Jiayin Sun,Chenxiao Jiang
Two crown ether grafted chitosan PIMs were separately fabricated. • PIM-CTS-15 exhibits superior Li + selectivity and >95% cycling stability. • Confinement–coordination synergy enables hopping-like Li + migration. • XPS, DFT and Danesi model reveal the Li + transport mechanism. Selective Li + recovery from complex industrial leachates is hindered by the intrinsic trade-off between ion flux and permselectivity. Herein, we propose a confined ion-recognition transport strategy based on two distinct crown ether-functionalized chitosan (CTS) polymer inclusion membranes (PIMs), namely PIM-CTS-15 and PIM-CTS-18 incorporating benzo-15-crown-5 (B15C5) and dibenzo-18-crown-6 (DB18C6), respectively. Covalent immobilization of crown ether moieties within the CTS matrix creates spatially confined recognition sites, enabling selective Li + coordination and transport. Under optimized conditions, PIM-CTS-15 achieves a high Li + flux of 4.8 mol h −1 m −2 and maintains over 95% cycling stability after ten cycles, with ion permselectivity follows the order of Li + ≫Mg 2+ >Ca 2+ >K + , demonstrating preferential Li + migration. Furthermore, PIM-CTS-15 exhibits competitive Li + permselectivity over competing coexisting ions, with P Li/Mg = 2.6, P Li/Ca = 3.5, and P Li/K = 2.3. Mechanistic investigation reveals that Li + transport proceeds through coordination-assisted hopping within confined crown ether sites, while the applied electric field promotes ion migration. Danesi kinetic analysis indicates a diffusion-coupled facilitated transport mechanism, and XPS/DFT calculations confirm the preferential interaction between Li + and O/N containing sites, as well as the stronger Li + binding affinity of PIM-CTS-15 compared with PIM-CTS-18. Notably, lowest Li + migration barrier among the studied cations, quantitatively supporting the hopping-like pathway. This work offers a molecular design principle for ion-recognition membranes by integrating host-guest confinement and coordination chemistry, achieving a favorable balance among Li + selectivity, transport efficiency, and operational stability for lithium recovery from complex industrial waste streams. Separation performance and mechanism of the PIM-CTS-15 membrane for Li + over competing metal ions. Download: Download high-res image (250KB) Download: Download full-size image
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Zisheng Li,Wenbing Zheng,Zheyun Cao,Zhuo Chen,Yuting Wang,Nan Zhao,Guoqiang Liu,Feng Zhou,Weimin Liu
Dual-network design with ion-electron conduction balances mechanical and electrical performance. • High tensile strength, toughness, and conductivity ensure stable sensing foundation. • Rapid photoinitiated fabrication enables efficient and scalable hydrogel preparation. • Long-term stable sensing performance sustained over 1000 stretching cycles. • Broad detection ranges from large joint movements to subtle facial expressions. Achieving mechanically robust yet highly conductive hydrogels remains a central challenge for skin-interfaced wearable sensors, as network reinforcement often compromises charge transport and long-term sensing stability. Here, we report a coordination-Hofmeister dual-network engineering strategy for constructing a chitosan/PAA/PEDOT:PSS conductive hydrogel that integrates high mechanical strength, efficient charge transport, and environmental adaptability. A primary hybrid network (PECA) is formed in an ethylene glycol/water medium through one-pot photoinitiated polymerization, simultaneously establishing covalently crosslinked PAA chains, Al 3+ -mediated coordination between PAA and the PSS component of PEDOT:PSS, together with electrostatic interactions involving chitosan, and a homogeneously distributed conductive polymer phase. Subsequent ammonium-sulfate-induced Hofmeister salting-out promotes polymer-chain dehydration and entanglement, generating a compact secondary physical network and yielding a double-network hydrogel (DECA). The optimized DECA hydrogel achieves a tensile strength of 1.74 MPa, toughness of 6.69 MJ m −3 , and conductivity of 6.52 S/m, corresponding to 6.9-, 5.0-, and 81-fold enhancements over the pristine hydrogel, respectively. Benefiting from reversible coordination/hydrogen-bonding interactions and stable electronic-ionic conductive pathways, the hydrogel sensor maintains reproducible resistance responses after 1000 stretching cycles. When mounted on human skin, the DECA sensor enables real-time monitoring of multi-scale physiological motions, from large joint movements to subtle facial expressions. This work provides a facile strategy for resolving the mechanical-electrical trade-off in conductive hydrogels and advances their application in durable wearable electronics. An Al 3+ coordination and Hofmeister salting-out strategy is used to engineer chitosan/PAA/PEDOT:PSS double-network conductive hydrogels. The coordinated and sulfate-reinforced network simultaneously improves tensile strength, toughness, conductivity, and cyclic sensing stability, enabling skin-mounted strain sensors for real-time monitoring of joint motion and subtle facial expressions. Download: Download high-res image (114KB) Download: Download full-size image
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高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2026
·
IF 5.4
Yipeng Chen,Suilin Qiu,Bingjie Hu,Mingjie Li,Yong Wang,Chin Ping Tan,Ning Zhang,Fu Liu
Surfactant-free tocotrienols (T3) self-assemble into nanoparticles (179–236 nm). • T3 nanoparticles with BLG or CMS exhibit high encapsulation efficiency (82–99%). • BTNPs and CTNPs showed distinct interfacial assembly mechanisms. • BTNPs demonstrate superior colloidal stability and bioaccessibility. • BTNPs and CTNPs enhance antioxidant activity of T3 via improved dispersibility. Tocotrienols (T3) are bioactive compounds with diverse biological activities, but their lipophilicity and poor bioavailability limit their application in the food field. In this study, surfactant-free self-assembled T3 nanoparticles (STNPs), β-lactoglobulin (BLG)-T3 co-assembled nanoparticles (BTNPs) and carboxymethyl chitosan (CMS)-T3 co-assembled nanoparticles (CTNPs) were comparatively evaluated. Both BTNPs and CTNPs could transform oily T3 into a solid-like lyophilized powder with excellent reconstitution properties. BTNPs exhibited higher encapsulation efficiency (EE, 82%–99%) and loading capacity (LC, 9–25 g/100 g), along with smaller particle size (143–198 nm) than STNPs (179–236 nm). Isothermal titration calorimetry revealed that BLG exhibited significantly higher apparent affinity toward T3 compared with CMS. Spectroscopic investigations suggested intermolecular interactions between T3 and carriers. Importantly, BTNPs exhibited enhanced colloidal stability under varying pH, ionic strength, and storage conditions compared with STNPs and CTNPs. The bioaccessibility of T3 was largely enhanced in all nanoparticles systems. Furthermore, compared with STNPs, BTNPs and CTNPs exhibited stronger hydrophilic-radical scavenging capacities and more effectively alleviated H 2 O 2 -induced ROS accumulation in HepG2 cells. These findings highlight the role of carrier-mediated colloidal properties in modulating the stability and antioxidant efficacy of encapsulated T3. Download: Download high-res image (163KB) Download: Download full-size image
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高影响因子
FOOD HYDROCOLLOIDS
·
2026
·
IF 13.8
Wanqin Xu,Qun Liu,Xu Zeng,Xiaobo Sun,Wuyin Weng,Yucang Zhang
Cinnamaldehyde-DL-lactic acid DES enhances chitosan film performance. • Covalent immobilization of cinnamaldehyde via Schiff base reaction. • Composite film exhibits UV-blocking, antifogging, and antibacterial activities. • The CS(CIN:LA)60 film effectively extends grape shelf-life. To address the issues of non-degradability in traditional petroleum-based packaging materials and the limitations of chitosan (CS) films (e.g., poor mechanical properties, insufficient water resistance, and single functionality), this study incorporated a deep eutectic solvent (DES) composed of cinnamaldehyde (CIN) and DL-lactic acid (LA) into the CS matrix to fabricate high-performance composite films. The effect of DES content on the structure and properties of the composite films was investigated. FTIR and XPS analyses suggested that a fraction of the aldehyde groups of CIN participated in Schiff base formation with the amino groups of CS. Together with hydrogen-bond reorganization and LA induced protonation of CS amino groups, these interactions contributed to the regulation of the CS network. When the DES content was 60% of the dry weight of CS, the resulting CS(CIN:LA)60 film exhibited the optimal comprehensive performance: its tensile strength (TS) reached as high as 41.57 MPa; the water contact angle (WCA) was approximately 100°, indicating good hydrophobicity; the water vapor transmission rate (WVTR) was reduced to 560.2 g/(m 2 ·24h); meanwhile, it possessed excellent ultraviolet (UV) shielding ability, remarkable anti-fogging performance, and good antibacterial activity. Grape preservation experiments demonstrated that the CS(CIN:LA)60 film could effectively inhibit microbial growth, reduce water loss, and delay fruit softening and the degradation of nutritional components. Compared with commercial polyethylene (PE) cling film, the composite film showed advantages in antibacterial activity, anti-fogging performance, and the maintenance of several grape quality attributes. This study provides a new strategy for the development of green food packaging materials. Download: Download high-res image (552KB) Download: Download full-size image
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高影响因子
RARE METALS
·
2026
·Vol. 45
·期 9
·e70521
·
IF 12.1
Wei Jiang,Bonan Sun,Qian Li,Wen Xia,Qianqian Liu,Peng Han,Hao Wang,Juanwen Cao,Xu Li,Shenghan Lou
en This link goes to a English section zh This link goes to a Chinese section Conductive hydrogels show great potential in flexible electronics and biomedical devices, yet their practical applications are often hindered by insufficient mechanical strength, poor environmental stability, and limited functionality. To address these challenges, this study has developed a hydrogel platform that integrates diagnosis and treatment, enabling real-time monitoring and sealing of gastrointestinal defects. Through a well-designed multi-dynamic network, the hydrogel integrates tissue-like stretchability (fracture strain up to 1420%), strong wet adhesion (adhesion strength 43 kPa), and broad-spectrum antibacterial activity. Leveraging its unique hybrid ionic electronic conductive network, the material enables simultaneous capture of electrophysiological signals (ECG and EMG) and mechanical motions (intestinal peristalsis, cardiac contraction, and gastric activity), achieving multimodal physiological monitoring. Remarkably, while providing a continuous and stable signal sensing, the hydrogel effectively seals gastrointestinal defects, demonstrating excellent defect sealing capability. This work presents a hydrogel platform that breaks through the limitations of conventional single-function materials, offering an innovative solution for closed-loop intelligent diagnostic therapeutic systems, with significant potential in next-generation bioelectronic medicine. 摘要 en This link goes to a English section zh This link goes to a Chinese section 导电水凝胶在柔性电子和生物医学器件领域展现出巨大潜力,但其实际应用常常受到机械强度不足、环境稳定性差以及功能有限等问题的制约。为了解决这些挑战,本研究开发了一种集诊断与治疗于一体的水凝胶平台,可实现胃肠道缺损的实时监测与封闭。通过精心设计的多重动态网络,该水凝胶兼具类组织的高延展性(断裂应变最高可达1420%)、优异的湿态黏附性能(黏附强度为43 kPa)以及广谱抗菌活性。得益于其独特的离子与电子混合导电网络,该材料能够同时采集电生理信号(如心电和肌电)以及机械运动信号(如肠蠕动、心脏收缩和胃部活动),从而实现多模态生理监测。值得注意的是,在提供连续稳定信号感知的同时,该水凝胶还能有效封闭胃肠道缺损,表现出优异的缺损封闭能力。该研究提出了一种突破传统单一功能材料局限的水凝胶平台,为构建闭环式智能诊疗系统提供了创新性解决方案,在下一代生物电子医学中具有重要应用潜力。
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高影响因子
CERAMICS INTERNATIONAL
·
2026
·
IF 6
Wenchao Li,Guitao Deng,Li Wan,Yucheng Liu,Fanrong Ai,Jinhua Hong,Kui Zhou
Lanthanum-doped hydroxyapatite nanowires (La-HAW) were successfully synthesized via a hydrothermal method and integrated into cryogenically 3D-printed chitosan (CS) porous scaffolds. Owing to their enhanced osteogenic activity and inherent antibacterial properties, these scaffolds represent a promising strategy for bone tissue engineering applications. Comprehensive characterization confirmed that the La-HAW possessed high aspect ratios (>1000), uniform elemental distribution, and successful incorporation of La 3+ into the hydroxyapatite lattice via XRD, XPS, and EDS analyses. In vitro biological evaluations revealed that La-HAW significantly promoted the osteogenic differentiation of MC3T3-E1 pre-osteoblasts, evidenced by elevated alkaline phosphatase (ALP) activity and enhanced calcium mineralization, while maintaining excellent biocompatibility. Additionally, La-HAW exhibited strong antibacterial efficacy, with inhibition rates of 90 ± 2% against Escherichia coli and 78 ± 3% against Staphylococcus aureus . When structured into porous chitosan-based scaffolds via cryogenic 3D printing, the resulting CS/La-HAW scaffolds exhibited hierarchical porosity with favorable degradation kinetics, high swelling capacity, and improved cellular adhesion and proliferation. The unique nanowire morphology provided abundant anchoring sites that promoted cell adhesion, spreading, and cytoskeletal extension, synergistically enhancing osteogenic induction. These findings highlight the dual-functional capability of La-HAW based scaffolds, combining enhanced osteogenesis with inherent antibacterial properties, positioning them as a promising platform for bone regeneration.
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高影响因子
Sustainable Materials and Technologies
·
2026
·
IF 9.7
Miaojia Du,Yaopeng Zhang,Yuezhong Wen,Fang Li,Kai Yin,Wenliang Wu,Chensi Shen
Antimony (Sb) treatment presents a paradox: oxidizing toxic Sb(III) to Sb(V) for detoxification generates Sb(OH) 6 − species with a large hydration radius (7.36 Å) that hinders adsorption on conventional crystalline adsorbents due to limited accessible sites. We developed a Ce(III/IV)-chitosan semi-crystalline complex with mixed-valence coordination (Ce 3+ /Ce 4+ = 62.3:37.7) that addresses this challenge. Ce coordination constructs a semi-crystalline architecture where amorphous regions provide more accessible sites for large Sb(OH) 6 − while ordered domains maintain structural stability. The mixed-valence system sustained positive surface charge (+25 to +40 mV, pH 2–10) for electrostatic Sb(V) attraction, while Ce 3+ /Ce 4+ cycling catalyzed H 2 O 2 -mediated Sb(III) oxidation. At 2 mg/L Sb, a challenging concentration for industrial wastewater, the material achieved >98% removal within 90 min, reducing residual Sb to <0.04 mg/ L. maximum capacities reached 595.5 mg/g (Sb(V)) and 461.6 mg/g (Sb(III)), with excellent regenerability (>86% after five cycles). This work demonstrates how coordination-induced structural reorganization and mixed-valence chemistry overcome fundamental barriers in mixed-oxidation-state contaminant treatment.
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DOI
高影响因子
POLYMER
·
2026
·
IF 5.1
Mengyun Shen,Changzhou Zhang,Yuanyuan Lu,Pengyu Yang,Guangli Chen,Zaosheng Lv,Yanfen Huang
Oily wastewater pollution poses a serious environmental challenge, driving the development of efficient, stable, and multifunctional purification materials for treating complex wastewater. In this study, a composite coating was constructed by integrating a metal-organic framework (MOF, CAU) for high surface area, polydopamine (PDA) for strong adhesion, and chitosan (CS) for hydrophilicity. The coating was deposited onto cotton fabric (CF) via a simple immersion method. The resulting polydopamine-chitosan-CAU@ cotton fabric exhibits superhydrophilic and underwater superoleophobic properties, with an underwater oil contact angle of up to 160°. It enables efficient oil-water separation across various oil phases and harsh conditions (acidic, alkaline, high-salinity). After 10 cycles, separation efficiency remains 98 % for petroleum ether-water mixtures. Furthermore, the coated fabric adsorbs cationic dyes (methylene blue) and shows antibacterial activity. These results highlight the significant potential of polydopamine-chitosan-CAU modified cotton fabric in the purification of complex oily wastewater.
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DOI
高影响因子
FOOD HYDROCOLLOIDS
·
2026
·
IF 13.8
Qi Wei,Pei Wang
To elucidate the mechanism by which carboxymethyl chitosan (CMCh) regulates heat-induced aggregation of gluten proteins, CMCh derivatives with distinct substitution sites (amino, hydroxyl, and dual amino/hydroxyl substitution) were prepared and systematically compared. The results demonstrated that CMCh effectively modulated gluten aggregation during heating, and the regulatory effect strongly dependent on the substitution site. The degree of substitution (DS) of the derivatives ranged from 0.58 for O-CMCh to 1.26 for N-CMCh, while N,O-CMCh exhibited a DS of 1.18 and the highest water solubility (67.98 g L −1 ). The dual substituted CMCh (N,O-CMCh) exhibited the most pronounced effect, significantly enhancing gluten network elasticity and thermal stability. The onset and peak denaturation temperatures increased to 62.56 °C and 67.88 °C, respectively, with a denaturation enthalpy of 0.70 J/g at 95 °C, markedly higher than that of the control. Furthermore, N,O-CMCh promoted more ordered disulfide cross-linking during heating, increasing the SDS-insoluble protein content (SDS-I) to 80.40% at 95 °C. This was accompanied by a controlled decrease in free sulfhydryl groups and a corresponding increase in disulfide bond formation. In contrast, the single-site substituted derivatives exhibited weaker regulatory effects: N-CMCh increased SDS-I to 75.20%, whereas O-CMCh displayed thermal behavior most similar to the control. The superior functionality of N,O-CMCh is attributed to its unique molecular structure, which enables synergistic electrostatic interactions, hydrogen bonding, and synergistic disulfide cross-linking.This study clarifies the substitution site–dependent structure–function relationship of CMCh and provides a theoretical foundation for the rational design of high-performance CMCh improvers for cereal food.
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高影响因子
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
·
2026
·Vol. 46
·期 10
·118296
·
IF 6.3
Bing Wang,Liyan Wang,Yunchuan Zhang,Jiangyuan Ma,Yang Yu,Furui Sun,Jianjun Shi,Lei Kong,Liuchun Zheng
The organic-inorganic hybridization has emerged as a promising strategy in advanced materials research. Herein, chitosan, a bio-polymer, was successfully introduced to fabricate monolithic mullite aerogel with excellent performance under ambient pressure drying (APD). The structures and properties of the aerogels were carefully regulated by varying the chitosan concentrations and acid concentrations, and the aerogels were characterized by SEM, FTIR, XPS, NMR, TG/DTG, BET, XRD, and so on. The results confirmed the formation of organic-inorganic hybrid network through coordination bond and hydrogen bonding, conducive to APD. The aerogels possess low density (0.225–0.292 g/cm 3 ), low thermal conductivity coefficient (0.03037–0.04101 W·m −1 ·K −1 ), low mass loss (25.90–34.32%), and high specific area (442.39–748.26 m 2 /g). Furthermore, an excellent high-temperature stability was granted owing to the superior dimensional stability and pore structural preservation of the aerogel under thermal cycling experiments. After heat treatment at 800–1400 °C, the aerogel reached high compressive strength of 0.29–4.82 MPa. This paper provides a facile preparation of high-performance aerogels, offering possibilities to confront harsh operating environments.
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产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2026
·
IF 8.7
Haihua Wang,Jianxia Yao,Ying Hou,Zhuoya Liu,Dong Yang
The development of eco-friendly and multifunctional edible coatings is crucial for mitigating postharvest losses of perishable fruits. Hence, a novel composite coating was engineered based on chitosan (CS) and pullulan (PUL) matrix, enhanced by a gallic acid-grafted chitosan (GS) conjugate synthesized through free radical grafting. The GS conjugate served as a multifunctional crosslinker, establishing a dense intermolecular network within the CS-PUL matrix primarily (CP) through hydrogen bonding, as confirmed by structural characterization. This molecular-level interaction significantly improved the mechanical strength (Tensile stress = 4.95 MPa, Elongation at break =121.21%) and barrier properties of the resulting coating. The chitosan/pullulan-gallic acid grafted chitosan (CP-GS) coating, applicable by spraying or dipping, exhibited remarkable antioxidant activity, achieving 97.8% DPPH radical scavenging (25 °C, 50% RH), the CP-GS coating significantly reduced weight loss, delayed the decline in titratable acidity, and effectively suppressed microbial growth, thereby extending the shelf life by 7 to 9 days compared to the uncoated samples. This study highlights the effectiveness of molecular grafting in designing advanced bio-based coatings and presents a promising strategy for fruit preservation using biological macromolecules.
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产品关联
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2026
·
IF 8.7
Xiaolu Li,Si Wu,Tao Feng,Tong Wu,Xu Zhu
Gold nanoparticles (AuNPs) exhibit excellent catalytic activity but face significant practical constraints, such as insufficient stability and difficult recovery. This study employed a quercetin-mediated green reduction method with chitosan as a stabilizer to synthesize Chitosan/AuNPs (Chit/AuNPs) capable of maintaining long-term dispersion stability (960 h). It was clearly demonstrated that the chitosan dosage is critical for controlling the size of AuNPs, with 0.8 mL of chitosan yielding smaller AuNPs with an average particle size of about 16.8 nm. Subsequently, Chit/AuNPs were immobilized within a calcium alginate network via electrostatic attraction and Ca 2+ cross-linking, successfully fabricating reusable Chitosan/AuNPs@Calcium Alginate (Chit/AuNPs@CaA) composite microspheres. The catalyst exhibited high activity at room temperature, achieving a 4-NP conversion rate of 97.0% within 25 min with an apparent rate constant (k) of 0.168 min −1 . Notably, after five consecutive uses, the conversion rate remained at 96.9% within 25 min, confirming its reliability as a reusable catalyst. Furthermore, in real water samples, the catalyst maintained over 96.1% conversion rate, demonstrating strong environmental tolerance. This research contributes to the development of novel catalytic materials with high activity, remarkable stability, and practical application potential.
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产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）