RSC Advances
·
2025
·Vol. 15
·期 26
·21121-21132
·
IF 4.6
Kai Wang,Zewen Song,Ziyi Xu,Yang Xi,Yuwei Cui,Haijun Zhou
Chitosan is considered an excellent carrier material with great potential due to its good biocompatibility, abundant reserves, and high chemical reactivity. However, chitosan's chemical instability and low mechanical strength limit its applications. In this study, quaternized magnetic chitosan (QMCS) was prepared by modifying magnetic chitosan microspheres (MCS) with quaternary ammonium. The obtained adsorbent was characterized using scanning electron microscopy (SEM), Fourier transform infrared (FTIR) spectroscopy, X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS). The effect of pH value and adsorbent dosage on the adsorbent's performance was investigated. The experimental results indicated that QMCS exhibited superior adsorption performance for methyl orange (MO) compared to MCS. At 298 K and pH 4, the adsorption capacity of QMCS for a 125 mg L−1 methyl orange (MO) solution reached 486.13 mg g−1, with a removal efficiency of 99.38%. The adsorption behavior of the adsorbent towards MO was in good agreement with the Langmuir isothermal model and the quasi-second-order kinetics model. The mechanism of adsorption may be attributed to electrostatic interactions and ion exchange. The synthesis of QMCS was simple, environmentally friendly, and has significant potential for water pollution treatment.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Water Process Engineering
·
2025
·
IF 6.7
Yuliang Zhang,Xinhao Yan,Ting Shu,Xiahui Liu,Yanhua Lei,Yuwen Huang,Tao Liu,Xiaobo Chen
The global freshwater shortage underscores the urgent need for efficient and sustainable desalination technologies. Solar-driven evaporation offers a promising solution due to its low energy demand and environmental compatibility, with photothermal materials and evaporator design being key to enhancing performance. In this study, chitosan-based aerogels have been used as the substrate, and a vertical channel structure has been prepared through unidirectional freezing technology in fabricating PPy@GO-CG (polypyrrole@graphene oxide-chitosan) aerogel evaporators. Experimental results have showed that under 1 kW·m −2 simulated solar light, the water evaporation rate can reach 3.79 kg·m −2 ·h −1 , and the solar steam conversion efficiency is as high as 96.16 %. In saline conditions, salt accumulation was not observed until after 60 h of continuous irradiation, indicating strong salt-rejection capability. The evaporator exhibits excellent long-term stability, salt resistance, and inherent antibacterial properties, ensuring both efficiency and reliability for practical use. This work thus offers a promising strategy for solar-driven seawater desalination and thermal energy conversion.
✓ 已验证
产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2025
·
IF 5.4
Muyuan Zeng,Wenbo Li,Shuang Zhang,Siyuan Yang
Carboxymethyl chitosan (CMC), a macromolecular material with active hydroxyl and carboxyl groups, exhibits strong polarity and readily chelates with metal ions to form stable flocs. These properties make it a promising flocculant for recovering fine-grained iron oxide ores. In this study, CMCs with varying degrees of carboxymethyl substitution were synthesized to investigate their role in the magnetic separation of fine (−12.5 μm) specularite and quartz, focusing on the relationship between flocculation and selectivity. Under optimized conditions, CMC significantly enhanced the magnetic separation recovery of fine specularite by promoting selective flocculation, increasing recovery from 71.98 % to 93.74 %. In the specularite–quartz binary system, CMC selectively adsorbed onto specularite, inducing its aggregation while exhibiting minimal interaction with quartz. This selective aggregation improved magnetic separation performance, raising the iron grade and recovery of the magnetic concentrate by 2.1 % and 18.19 %, respectively. Fourier Transform Infrared Spectroscopy (FTIR) and molecular dynamics simulation (MDS) revealed that CMC’s carboxyl groups had a strong affinity for Fe atoms on the specularite surface, with adsorption energy nearly three times higher than on quartz. Sedimentation tests and polarized light microscopy confirmed that CMC promoted specularite aggregation via a bridging mechanism, increasing apparent particle size and improving separation efficiency. However, excessively long carbon chains sometimes entrapped quartz particles within specularite flocs, slightly reducing selectivity. These findings highlight CMC’s potential as an efficient, selective flocculant for fine iron oxide recovery and its broader applicability in mineral processing and related fields.
✓ 已验证
产品关联
DOI
高影响因子
POLYMER BULLETIN
·
2025
·
IF 4
Jin Yang,Shen Fengting,Yu Haojie,Wang Huanan,Wang Li
Textiles are prone to bacterial proliferation, which may lead to unpleasant odors, infection, and inflammation. To prepare antibacterial textiles, post-finishing is a convenient and scalable method. However, conventional post-finishing coatings often exhibit poor adhesion to polyethylene terephthalate (PET) textiles, limiting their loading efficiency. This study developed a quaternized chitosan/tannic acid (QACS/TA) bicomponent finishing agent to address this challenge. When the finishing agent contained 2 wt% QACS and 1 wt% TA, the post-finishing coating demonstrated optimized adhesion to PET, resulting in a weight gain of more than 15% for the treated PET textiles. The pyrogallol groups on TA could form abundant hydrogen bonds with ester groups of PET and the amino and hydroxyl groups of QACS, acting as binders between QACS and PET. The treated textiles showed an antibacterial rate of 99.2% against E.coli and almost 100% against S.aureus . This study presents a convenient and effective approach to preparing antibacterial PET textiles with improved coating adhesion.
✓ 已验证
产品关联
DOI
高影响因子
Foods
·
2025
·Vol. 14
·期 11
·1981
·
IF 5.1
Dexin Zhao,Shiguo Peng,Feifei Chen,Alei Zhang,Kequan Chen
In this study, we developed an innovative method for one-step enzyme purification and immobilization utilizing polysaccharide-based microspheres through a chitosan-binding module that mediated affinity adsorption. The chitosan-binding domain derived fromPaenibacillussp. IK-5 was genetically fused with multiple target enzymes (lysine decarboxylase, glutamate oxidase, and formate dehydrogenase), all of which were successfully expressed in soluble forms. Three distinct polysaccharide microspheres with optimized surface characteristics were engineered to facilitate the concurrent purification and immobilization of these fusion enzymes. Comprehensive characterization using organic elemental analysis, fluorescence microscopy, and thermogravimetric analysis confirmed the efficient immobilization of fusion enzymes. Remarkably, the immobilized enzymes demonstrated exceptional operational stability, maintaining over 80% of their initial catalytic activity after ten consecutive reuse cycles. This study establishes a robust and versatile platform for enzyme immobilization, providing significant advantages in biocatalyst engineering applications.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Qiancheng Liu,Xueye Chen,XuDong Wei,Junlong Sun,Changxia Liu
This study developed a high-performance flexible triboelectric nanogenerator (TENG) for self-powered wearable health monitoring by layer-by-layer assembly of MXene (Ti 3 C 2 T x , V 2 CT x ), chitosan (CS), and carbon nanotubes (CNTs).An innovative strategy was proposed to diminish MXene interlayer stacking via a two-step vacuum filtration method. A Ti 3 C 2 T x /CNT-V 2 CT x /CNT(TCVC) composite film with a hierarchical porous structure are synthesized to significantly enhance interfacial bonding strength and charge transfer efficiency. The open-circuit voltage (V oc ) 117.06 V and short-circuit current (I sc ) of 1.93 μA of TENG are realized by utilizing the synergistic effect of high electronegativity of MXene, conductive network of CNT and biocompatible crosslinking of CS. Systematic characterization demonstrated the optimized TCVC-TENG exhibits mechanical durability (>6000 cycles, <3 % decay), high sensitivity (9.84 V·N −1 at 0.1 N), rapid response/recovery times (170 ms/150 ms), and environmental robustness (20–80 °C). The sensor is applied to human health monitoring, which can continuously detect joint flexion amplitude, laryngeal vibration frequency and gait dynamics, thus realizing real-time assessment of physiological conditions. This work provides a scalable and cost-effective strategy for designing multifunctional self-powered wearable sensors with potential applications in Parkinson's disease early warning, athlete performance tracking, and personalized healthcare.
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2025
·
IF 8.2
Man Zhang,Jingxi Yang,Junyuan Zhang,Keqi Wo,Xiangyang Dong,Hongbing Deng,Man Wang,Cheng Yang
The reconstruction of critical-sized bone defects remains a significant clinical challenge. Natural polymers used for bone defects exhibit excellent biocompatibility and degradability; however, their inadequate mechanical properties, absence of biomimetic topological structures, and limited osteogenic potential hinder their suitability for clinical applications. In this study, we developed an all-natural wood hydrogel by integrating natural lignocellulosic nanofibers into chitosan hydrogels through delignification and vacuum impregnation. The all-natural wood hydrogel effectively mimics the structure of natural bone. Strontium ions mimicked bone’s phosphate fibers, chitosan hydrogels emulated collagen fibers, and WW was used to recreate the layered, anisotropic bone tissue structures. Furthermore, the tensile strength of the all-natural wood hydrogel reached approximately 12 MPa, demonstrating a significant improvement in the mechanical strength. In vitro experiments confirmed that the all-natural wood hydrogel showed excellent biocompatibility, promoting cell proliferation and migration. Additionally, the release of strontium ions from the all-natural wood hydrogel supports angiogenesis and osteogenesis. Transcriptomic analysis initially revealed that the all-natural wood hydrogel modulates BMSCs activity by upregulating angiogenic and osteogenic genes while activating PI3K-AKT and calcium signaling pathways. Moreover, in in vivo experiments, this all-natural wood hydrogel is adaptable to various cranial defects and accelerates the repair of critical-sized bone defects. These findings offer insights into the development of all-natural wood hydrogels for enhancing bone regeneration.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2026
·
IF 8.5
H. William Myers,Bincheng Ma,Xianfei Wang,Dawei Li,Feihu Li
To address the critical challenge of phosphorus pollution in surface waters, this study develops two chitosan-based magnetic biosorbents (denoted as Ce@mCS and Zr@mCS) for the efficient removal of phosphorus from wastewater. The biocomposites were engineered to provide a sustainable and high-performance solution, circumventing the limitations of existing phosphorus removal strategies. The successful fabrication of the biocomposites, including the incorporation of magnetic components (Fe 3 O 4 ) and dispersion of Ce/Zr active centers (i.e., CeCO₃OH, ZrO₂) with the chitosan scaffolds, was rigorously confirmed through SEM, XRD, XPS, FTIR, and zeta potential analyses. Batch adsorption experiments were carried out to optimize key parameters, yielding removal efficiencies of 88.3% for Ce@mCS and 85.7% for Zr@mCS ( C ₀ = 25 mg L −1 , dosage = 0.5 g L −1 , T = 298 K, t = 8 h). The adsorption isotherm data were best described by the Langmuir model, indicating monolayer adsorption with maximum capacities of 62.23 mg g −1 for Ce@mCS and 45.07 mg g −1 for Zr@mCS. Recycling performance analysis confirms the excellent capacity retention of both biocomposites over five consecutive cycles, validating their high practical potential promise. Post-adsorption characterization reveals that the mechanism for P capture lies in ligand exchange, Coulombic attraction, and H-bonding. This work exemplifies chitosan-based magnetic biocomposites for phosphate removal and underscores the promise of tailored biosorbents, providing a viable path for sustainable wastewater remediation and management.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2026
·
IF 8.5
Xinrui Gao,Zhili Ma,Huiqing Wu,Wen Huang,Dexin Zhang
Lotus leaf flavonoids (LLF), derived from an abundant agricultural byproduct, were incorporated into zein/chitosan (ZC) matrices to fabricate multifunctional edible films with controlled-release properties for active food packaging applications. LLF-ZC composite films containing different flavonoid loadings (0.1–0.3%, w / v ) were prepared and systematically evaluated in terms of physicochemical, mechanical, thermal, structural, and bioactive properties. The incorporation of LLF significantly increased film thickness, density, tensile strength, and thermal stability, while maintaining low water vapor and gas permeability. Structural characterization by SEM, ATR-FTIR, and XRD confirmed good compatibility between LLF and the ZC matrix, mainly attributed to hydrogen bonding and hydrophobic interactions. LLF addition markedly enhanced the antioxidant and antibacterial performance of the films, with DPPH and ABTS radical scavenging activities exceeding 90% at higher LLF contents and concentration-dependent inhibition against Escherichia coli and Staphylococcus aureus . Among the tested formulations, the 0.2% LLF-ZC film exhibited the most balanced overall performance in terms of mechanical strength, barrier properties, and bioactivity. The release behavior of LLF was strongly influenced by the polarity of food simulants, with the highest cumulative release observed in 50% ethanol, followed by water and 95% ethanol. Kinetic analysis indicated that the release profiles were best described by the Peppas-Sahlin and Ritger-Peppas models, demonstrating that Fickian diffusion was the dominant release mechanism. Overall, these results highlight the potential of LLF-ZC films as sustainable active packaging materials, particularly for semi-fatty food systems.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Sustainable Chemistry & Engineering
·
2026
·
IF 7.3
Guomin Guo,Xinlong He,Xingyuan Lu,Sen Lin,Aimin Zhang,Jihai Zhang
With the rapid growth of flexible electronics and outdoor sensing technologies, developing novel materials that combine high sensitivity, mechanical robustness, and multifunctionality has become a key focus. Traditional materials often suffer performance degradation under extreme conditions, limiting their thermal management, infrared stealth and sustainable development. In this study, MXene/carboxymethyl chitosan (MXene/CCS) composite aerogels with an ordered channel structure were fabricated via directional freeze-drying. These aerogels exhibited significant improvements in mechanical strength and electrical conductivity, with a compressive strength reached 195 kPa along the ice crystal growth direction and 79 kPa in the perpendicular direction under 10% strain and a sensitivity of up to 14.60. The response and recovery times were under 88 ms, demonstrating excellent dynamic response. As a piezoresistive sensor, the aerogel could detect subtle human movements and external stimuli, enabling applications such as Braille recognition and Morse code output. Additionally, the aerogels showed outstanding photothermal conversion, thermal management, oil–water separation, and antibacterial performance, with inhibition efficiencies over 50% against Escherichia coli and Staphylococcus aureus. This work presents a promising strategy for developing environmentally friendly and multifunctional MXene-based flexible electronics, with potential applications in intelligent sensing, thermal management, environmental camouflage, and oil–water separation.
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2026
·
IF 8.5
Wei Zhang,Jiale Wang,Chuyue Cai,Pan Gong,Hanlin Shao,Wenzhong Yang,Zhihao Chen,Chang Liu
In the nervous system, neuronal action potentials induced by stimulation reach axon terminals, triggering neurotransmitter release and propagating signals across the neural network. Inspired by neural signal transduction mechanisms, this study designs a responsive self-healing coating synergizing active and passive corrosion protection. A conductive polyaniline-grafted chitosan hydrogel network is integrated into a waterborne epoxy resin matrix via hydrogel coating technology. The inhibitor 2-mercaptobenzothiazole (MBT) is vacuum-encapsulated and deposited onto 304 stainless steel by spin-coating. Combined with first-principles calculations, it was demonstrated that this network rapidly responds to the local pH decrease caused by corrosion near metastable pitting sites on the metal, promptly releasing the vacuum-encapsulated MBT inhibitor. Vacuum-encapsulated MBT is rapidly released by the network in response to local pH reduction caused by corrosion near metastable pits, and the inhibitor is swiftly transported through its channels, enabling the coating to exhibit superior corrosion resistance during long-term immersion in 3.5 wt% NaCl solution. Electrochemical impedance spectroscopy (EIS) confirms exceptional corrosion resistance, with |Z| 0.01Hz maintained at 7.54 × 10 8 Ω·cm 2 after 35 days. Scratch tests demonstrate effective self-healing, as |Z| 0.01Hz increases to 4.97 × 10 7 Ω·cm 2 within 14 h. The value is about two orders of magnitude higher than that of the blank coating. Neural network signal transduction principles establish innovative frameworks for advancing metallic protection methodologies.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
FOOD CHEMISTRY
·
2026
·
IF 9.8
Xinhui Wang,Junjun Zhou,Bing Qi,Zhou Chen,Siting Li,Aijin Ma,Yingmin Jia
This study developed an edible chitosan-based coating incorporating the main polyphenols from walnut kernel seed coats (gallic acid, ferulic acid, and ellagic acid) to enhance the oxidative stability and sensory quality of fresh walnut kernels during roasting. SEM and AFM analysis revealed that gallic acid-loaded chitosan films exhibited a uniform yet rough morphology, while zeta potential measurements (36–41 mV) confirmed improved film stability. The gallic acid-loaded film demonstrated superior wettability (contact angle: 21.45°) and low water vapor permeability (2.87 × 10 −3 g/(mm∙h∙kPa)), ensuring strong adhesion. FTIR and UV–Vis analyses confirmed hydrogen-bonded crosslinking between polyphenols and chitosan. Thermal stability increased, with DSC and TGA peaks at 181.97 °C and 343 °C for the gallic acid-loaded film. Coated kernels exhibited significantly lower oxidation, with peroxide and acid values (0.04 g/100 g, 0.5 mg/g) outperforming uncoated samples. These findings suggested that gallic acid-loaded chitosan coatings effectively improve walnut kernel quality during roasting.
✓ 已验证
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）