JOURNAL OF MATERIALS RESEARCH
·
2021
·Vol. 36
·期 14
·2926-2935
·
IF 3.089
Xia Tingting,Wu Heyan,Yin Liangliang,Ji Yanqin
A new Cs + adsorbent, Fe 3 O 4 -chitosan particles combined with ammonium molybdophosphate (Fe 3 O 4 –CTS–AMP composite) were synthesized using a facile method through coordination between CTS and AMP. The surface morphology and chemical composition characterization indicated that Fe 3 O 4 –CTS particles and AMP particles were bonded tightly and the composite behaved superparamagnetically. Cs + adsorption properties of Fe 3 O 4 –CTS–AMP composites were studied. The adsorption data fitted well with pseudo-second-order kinetic model and Langmuir–Freundlich adsorption isotherms model. The adsorption equilibrium can be reached fast at 5 min. The maximum adsorption capacity was calculated as 177.8 mg g −1 . The composite also showed high selectivity for Cs + in coexistence with high concentration of competing cations. The adsorption mechanism of Cs + for the composite may mainly be the exchange of Cs + with NH 4 + . Therefore, the newly developed adsorbent is a kind of potential efficient composite for Cs + removal from wastewater. Graphic abstract
研究领域:
环境科学
·
材料科学
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DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2026
·
IF 8.7
Yi Zhao,Lei Liu,Qing Chang,Yijun Xie,Xiaoyong Deng
Under the dual challenges of plastic-driven environmental pollution and global food insecurity, there exists an urgent demand for sustainable packaging solutions capable of extending produce shelf life. Cellulose nanofibers (CNF) and chitosan (CS) are promising bio-based materials; however, their susceptibility to performance loss in high-humidity environments and their lack of intrinsic heat-sealing capability limit practical applications. Herein, an asymmetric bilayer CNF/CS film crosslinked with genipin is introduced to effectively address the performance degradation under humid conditions. The film is hydrophobically modified with octanoic acid (OA), achieving an optimal balance of high transparency (visible-light transmittance >80%) and hydrophobicity (contact angle ≈ 110°). The inner layer, comprising thermoplastic starch (TPS) plasticized with polyvinyl alcohol (PVA) and blended with a thymol/octanoic acid deep eutectic solvent (DES), affords low-temperature processability and heat-seal performance (seal strength = 19.9 N / 15 mm) alongside potent antibacterial and antioxidant activity (inhibition > 98% against E. coli and S. aureus ). In strawberry and blueberry preservation trials, the resulting film completely suppresses mold growth within 5 days, with only 8% weight loss, and exhibits over 85% biodegradation in soil within 30 days. This bilayer design provides a new solution for developing high-performance, eco-friendly food packaging materials.
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2026
·
IF 3.1
Ruini Zhang,Jinxin Chen,Jinchuan Peng,Zhihong Dong,Ying Zhang
The rise of antibiotic resistance necessitates the development of non-antibiotic antibacterial dressings with high biocompatibility and reliable wound-repair performance. In this work, chitosan/cellulose ether composite antibacterial membranes (CCE-ACM) were fabricated from chitosan, hydroxyethyl cellulose, and hydroxypropyl cellulose, and further reinforced through sodium trimetaphosphate (STMP) cross-linking. Response-surface optimization enabled the construction of a compact phosphodiester-linked network with improved mechanical strength, controlled swelling behavior, and stable moisture regulation. The membranes exhibited excellent cytocompatibility (> 80% viability) and strong antibacterial activity against Escherichia coli and Staphylococcus aureus , with the optimized CHEPCS formulation showing the most pronounced inhibition. In vivo, CCE-ACM significantly accelerated wound closure, achieving near-complete healing by Day 15 and promoting reduced inflammation, enhanced re-epithelialization, and more mature collagen deposition. These results demonstrate that the optimized CHEPCS membrane integrates effective antibacterial activity, favorable biocompatibility, and enhanced wound-healing performance, representing a promising non-antibiotic dressing for advanced wound care applications.
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产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2026
·
IF 8.5
Na Wang,Hanyu Ren,Tongtong Li,Chunhui Luo
Designing hydrogels with antibacterial, antifouling, lubricating, wet-adhesive, and highly mechanical properties is crucial for articular cartilage replacement. However, achieving such a combination remains a big challenge. To tackle this issue, a PCG matrix with a compressive strength of 42 MPa was prepared from polyvinyl alcohol, grape seed protein and chitosan via the multiple linkages (crystalline domains, hydrogen bonds, and ionic interactions). Next, the introduction of sulfobetaine methacrylate in the top layer endowed the hydrogel antifouling and lubricating performances. Subsequently, ciprofloxacin (CIP) was encapsulated via the self-assembly of soybean lecithin (SL) in water using the thin-film hydration method, followed by soaking the pre-hydrogel into the aqueous dispersion. Compared with PCG hydrogel, the antibacterial effects on E. coli and S. aureus were increased by 2250% and 1700% respectively. Meanwhile, the SPA gel achieved antibacterial rate of ~100% against both types of bacteria. In addition, the hydrophilic phosphatidylcholine groups of SL formed a boundary lubrication layer, reducing the coefficient of friction to 0.018. Finally, a gelatin-tannic acid adhesive layer was coated on the bottom to obtain the resultant SPA gel. The amino acids and polyphenol groups endowed the hydrogel with robust wet adhesion. Owing to the biocompatible materials and green process, the obtained SPA hydrogel had a cell viability of 96.7%, indicating excellent cytocompatibility. This biomimetic design successfully replicated the structures and performances of articular cartilages, making it promising for cartilage replacements.
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产品关联
DOI
PubMed
高影响因子
International Journal of Environmental Research and Public Health
·
2020
·Vol. 17
·期 2
·429
·
IF 2.849
Qintao Yang,Liang Gong,Lili Huang,Qinglin Xie,Yijian Zhong,Nanchun Chen
A novel chitosan (CS)-modified diatomite (Dt) was prepared by a simple mixture in the mass ratio to remove As(V) from aqueous solution in this research. The CS-modified Dt adsorbent was characterized by scanning electron microscopy (SEM), Fourier-transform infrared spectroscopy (FTIR), and X-ray powder diffraction (XRD) analysis. The parameters to influence the adsorption of As(V) ion were studied under such conditions as kinetics, adsorption isotherm, and pH effect. The results revealed that adsorption of As(V) was initially rapid and the equilibrium time was reached after 40 min. The optimal value of the pH was 5.0 for better adsorption. The equilibrium data were well fitted to the Langmuir isotherm compared to the Freundlich isotherm, and exhibited the highest capacity and removal efficiency of 94.3% under an initial As(V) concentration of 5 mg/L. The kinetic data were well described by the pseudo-second-order model. In addition, 0.1 M NaOH has the best desorption efficiency of As(V) adsorbed on CS-modified Dt, and the removal efficiency of As(V) was still higher than 90% when after six adsorption-desorption cycles. These results showed that the CS-modified Dt could be considered as a potential adsorbent for the removal of As(V) in aqueous solution.
研究领域:
环境科学
·
材料科学
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DOI
高影响因子
Chemical Engineering Journal Advances
·
2022
·
IF 0
Qiang Liu,Weixin Xiao,Bin Liao,Kaiqi Yan,Jingjie Zhang
Solar-driven interfacial evaporation technology has been regarded as one of the most promising desalination technologies due to its features of high efficiency, energy-saving and low cost. However, designing a sustainable evaporator integrating light absorption, thermal management, water transport and salt resistance remains a significant challenge. Herein, we report the fabrication of a chitosan aerogel-carbon nanotubes (CA-CNT) double-layer structured evaporator by depositing CNT on the top part of CA substrate, prepared through unidirectional freezing method. The hydrophilic CA substrate exhibits low thermal conductivity and internal vertical aligned pore structure, benefiting evaporation efficiency, water transportation and salt resistance. The upper CNT layer shows an outstanding optical absorption rate of 95.04%. At one solar intensity (1 kw m −2 ), the evaporation rate of the evaporator was 1.55 kg m −2 h −1 with an evaporation efficiency of 97.15%. Its practical applicability was tested under outdoor natural light condition, and the freshwater yield was 7.15 kg m −2 d −1 . In addition, the evaporator showed good heavy metal and dye sewage purification capacity. This work provides a facile strategy for recovering freshwater from seawater and sewage.
研究领域:
材料科学
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环境科学
·
能源工程
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DOI
Catalysts
·
2017
·Vol. 7
·期 10
·302
·
IF 3.082
Ni Tu,Jianxin Shou,Huaping Dong,Jin Huang,Yimin Li
Clay/chitosan composite beads were prepared and used as the carrier to support lipase by adsorption, to improve the activity and stability of lipase in the hydrolysis of olive oil. Under conditions of pH 6.0, 25 °C and adsorption for 10 h, immobilized lipases on chitosan bead (CB–lipase) and three clay/chitosan composite beads, at different clay to chitosan proportions of 1:8 (CCB-8-lipase), 1:5 (CCB-5-lipase) and 1:3 (CCB-3-lipase), were prepared. By comparing the activity of these immobilized lipases, CCB-5-lipase showed the highest activity, followed by CCB-8-lipase > CCB-3-lipase > CB-lipase; this improvement was attributed to the synergetic effect of enrichment of olive oil by clay at the reaction surface and better biocompatibility of chitosan with lipase molecules. The optimum pH and temperature in the reaction respectively changed from 7.0 and 30 °C for free lipase to 7.5 and 35 °C for immobilized forms. Furthermore, the thermal stability and repeated usability of these immobilized lipases were sequenced as CCB-3-lipase > CCB-5-lipase > CCB-8-lipase > CB–lipase, due to greater rigidity of immobilized lipase with the addition of clay, which was further confirmed by SEM. The study shows that the incorporation of clay with chitosan creates a good synergetic effect to improve the catalytic performance of immobilized lipase on clay/chitosan composite.
研究领域:
生物催化
·
酶工程
·
材料科学
·
应用微生物学
·
分子生物学
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DOI
高影响因子
RSC Advances
·
2015
·Vol. 5
·期 62
·50523-50531
·
IF 3.84
Honghui Zhang,Xiaoxing Lv,Xinping Zhang,Hongjun Wang,Hongbing Deng,Yuejun Li,Xiaoli Xu,Rong Huang,Xueyong Li
This study reports the preparation and properties of a chitosan (CS)–organic rectorite (OREC)/sodium alginate (SA) composite sponge. The novel sponge was fabricated by solution intercalation and chemical cross-linking techniques. The structure and composition of the CS/SA and CS–OREC/SA composite sponges were characterized by FE-SEM, FT-IR, XRD and EDX. The results showed that the polyelectrolyte with a highly cross-linked structure and uniform pore distribution could be obtained by mixing CS and SA with or without the addition of OREC into them. Besides, the low cytotoxicity and excellent antibacterial efficacy of the prepared CS/SA and CS–OREC/SA sponges were demonstrated by an MTT assay and an antibacterial assay. Moreover, the results of the hemostatic tests on ear-artery, ear-vein and liver injuries of rabbits showed that the addition of OREC into the CS/SA composite sponge significantly improved the hemostatic efficiency of the as-prepared sponge without compromising the biocompatibility and antibacterial property of CS. This study indicated that the CS–OREC/SA composite sponge had the potential to be a potent hemostat for controlling wound infection and bleeding in medical fields.
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DOI
高影响因子
MATERIALS LETTERS
·
2017
·
IF 2.572
Meng He,Xinjiang Zhang,Wei Yao,Chengshuang Wang,Lei Shi,Panghu Zhou
Novel alternate layered chitosan/alginate composite hydrogels (CACH) were fabricated successfully by a multi-step alternate interrupted gelation process. The structure and properties of the hydrogels were characterized. The results indicated that the shape, size and layer thickness could be controlled by changing the gel core shape, chitosan/alginate concentration and soaking time. The CACH exhibited good architectural stability. Endothelial cells could adhere and proliferate on the layer surface, showing great potential as cell culture carriers and matrix for the control release of molecules due to the distinct physical barriers. This work opens up a new avenue for the construction of other polymer based alternate layered hydrogels.
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2021
·
IF 13.273
Yu Tian,Diana Estevez,Huijie Wei,Mengyue Peng,Liping Zhou,Peng Xu,Chen Wu,Mi Yan,Huan Wang,Hua-Xin Peng,Faxiang Qin
Remarkable features of lightweight and 3D conductive network make carbon aerogels a competitive candidate for advanced microwave absorption (MA) materials. However, little is known about the specific correlation between multiscale structural parameters and their MA properties, setting obstacles for fully tapping the potential of microstructure regulation. Herein, utilizing sustainable biomass as the precursor, chitosan-derived N-doped carbon aerogels (CCA) with finely-tailored hierarchical structure were fabricated via regulating the freeze casting and annealing processes. Carbonization temperature mainly controlled nanoscale structural features such as defects and nanocrystals which had a significant impact on conductive and polarization losses. As for micron/macro-scale structures, the pore size and 3D conductive network configuration contributed to interfacial polarization and conductive losses, which were regulated by freezing process and precursor concentration. The synergistic effect derived from the hierarchical optimized structure and inherent N-doping was responsible for a remarkable reflection loss of − 68.8 dB, and an effective absorption band covering the whole X-band at 5.1 mm. Such MA performance significantly outperforms other biomass-derived carbon absorbers that usually incorporate magnetic components. The multi-scale structural control implemented in this work is essential to fully exploit the potential of chitosan-derived carbon aerogels across different length scales and design high-performance microwave absorbers.
研究领域:
材料科学
·
纳米科技
·
高分子化学
·
功能材料
·
电磁学
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DOI
高影响因子
Journal of Materials Chemistry A
·
2015
·Vol. 3
·期 29
·15235-15240
·
IF 7.443
Yilei Chen,Naiqiang Liu,Hongyuan Shao,Weikun Wang,Mengyao Gao,Chengming Li,Hao Zhang,Anbang Wang,Yaqin Huang
Chitosan with abundant hydroxyl and amine groups as an additive for cathodes and separators has been proven to be an effective polysulfide trapping agent in lithium–sulfur batteries. Compared with common sulfur cathodes, the cathode with chitosan shows an enhanced initial discharge capacity from 950 to 1145 mA h g−1 at C/10. The reversible specific capacity after 100 cycles increases from 508 mA h g−1 to 680 mA h g−1 and 473 to 646 mA h g−1 at rates of C/2 and 1 C, respectively. In addition, batteries with separators that are coated with a carbon/chitosan layer can exhibit a high discharge capacity of 830 mA h g−1 at C/2 after 100 cycles and 675 mA h g−1 at 1 C after 200 cycles with the capacity fading to as low as 0.11% per cycle. This study demonstrates the benefits of using chitosan for not only lithium–sulfur batteries but also potentially other sulfur-based battery applications.
研究领域:
材料科学
·
储能
·
电化学
·
电池技术
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DOI
高影响因子
Journal of Macromolecular Science Part B-Physics
·
2024
·
IF 1.2
Jie Jiang,Jianjun Fang,Wenjuan Liu,Meimei Guo,Zhongjia Lu,Heng Tang,Yi Lan,Zhihua Zhou
Composite porous microcarriers based on demineralized bone extracellular matrix (DBECM) and chitosan (Cs) were prepared using a combined emulsion and freeze-drying method. The effects of digestion by pepsin on the DBECM properties were investigated. The morphologies and porous structure of the DBECM/Cs porous microcarriers were observed by using a scanning electron microscope (SEM). The cytocompatibility of the DBECM/Cs porous microcarriers were studied by using cell counting kit-8 (CCK-8) and calcein acetoxymethyl ester/propidium iodide (CAM/PI). DBECM was digested into small pieces with a loose porous sponge structure and the digested DBECM showed an amorphous state. The resultant DBECM/Cs porous microcarriers showed a spherical shape and an interconnective porous structure. The CCK-8 and CAM/PI analyses indicated that the DBECM/Cs porous microcarriers were non-cytotoxic and showed good biocompatibility, providing a more favorable growth environment for cells.
研究领域:
生物医学工程
·
材料科学
·
组织工程
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DOI
高影响因子
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