Gels
·
2026
·Vol. 12
·期 6
·467
·
IF 6.4
Lingfeng Kou,Huan Yang,Yunquan Zheng
In this study, a novel composite hydrogel was developed based on oxidized sodium alginate (OSA), synthesized via sodium periodate oxidation, and incorporated into a carboxymethyl chitosan (CMCS) matrix. Scallop active peptides (SAPs), a marine-derived bioactive component with outstanding antioxidant and pro-regenerative activities, was introduced to endow the hydrogel with enhanced biological functions, which is of great significance for breaking the functional limitations of traditional single-component hydrogels. The construction of a dynamic covalent network, driven by the Schiff base reaction, was confirmed through structural characterization using FT-IR and1H-NMR. The hydrogel exhibited favorable physicochemical properties, including shear-thinning behavior, significant self-healing capability, and a uniform porous microstructure that effectively mimics the extracellular matrix (ECM). In vitro evaluations revealed excellent biocompatibility and potent pro-angiogenic potential, as evidenced by enhanced HUVEC migration and tube formation. In a rat model of full-thickness skin wounds, the CMCS/OSA/SAPs hydrogel significantly accelerated wound closure and promoted re-epithelialization and organized collagen deposition. Furthermore, immunohistochemical analysis confirmed upregulated VEGF and α-SMA expression, alongside reduced inflammatory levels (decreased iNOS), indicating potent tissue-regenerative and immunomodulatory functions. Overall, this work presents a multifunctional hydrogel system that integrates antioxidant, anti-inflammatory, and tissue-regenerative properties, offering a promising strategy for deep-wound healing. This study highlights the significant potential of marine-derived bioactive proteins/peptides in the development of advanced biomedical materials.
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Desalination and Water Treatment
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2015
·
IF 1.173
Zhiyuan Wang,Chao Wang,Peifang Wang,Jin Qian,Jun Hou,Yanhui Ao
The adsorptive removal of the most commonly occurring cyanobacterial toxin microcystin–LR by polyacrylamide/sodium alginate-modified montmorillonite (PAM/SA-MMT) superabsorbent nanocomposite was investigated through the HPLC/UV system. The process of PAM/SA-MMT preparation and MC-LR adsorption was characterized by scanning electron microscopy, energy dispersive X-ray microanalysis, X-ray diffraction analysis, and Fourier transform infrared spectroscopy analysis. With the application of Box–Behnken statistical experimental design combined with Response surface methodology, the quadratic statistical model was established to predict the interactive effects of pH, weight ratio (wr) of AM to SA, and weight content (wt) of MMT on MC-LR adsorption and to optimize the main controlling parameters. The maximum adsorption capacity was observed with pH 2.5–4.5, wr 55–65, and wt3–5%. The MC-LR adsorption capacity of PAM/SA-MMT increased with increase in temperature from 10 to 40°C. Kinetics were consistent with Pseudo models and revealed that the sorption process could reach the equilibrium within 80 min and involved several different rate-controlling kinetic stages. The Langmuir isotherm model predicted that the theoretical maximum adsorption capacity of PAM/SA-MMT was 32.66 mg g−1. Over 85% adsorption and 80% desorption could be achieved after five regeneration cycles and the recovery of MC-LR reached 92.8% without ionic effect. PAM/SA-MMT superabsorbent nanocomposite was determined as effective, economic, and environmentally benign for MC-LR removal on a large-scale application.
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FOOD CHEMISTRY
·
2026
·
IF 10.4
Junjie Tang,Jianxi Zhang,Huixian Lu,Xingyan Chen,Si Shi,Jie Shi,Yuanzhao Li,Jie Pang,Chunhua Wu
Postharvest spoilage reduces fruit marketability and shelf life. A multifunctional packaging for strawberries, composed of carboxymethyl chitosan, sodium alginate, tannic acid, and tea tree oil, effectively delays deterioration. It rapidly cross-links via hydrogen bonding within 15 s, forming a protective coating that envelops the fruit surface. This biocompatible film significantly enhances physicochemical properties, antioxidant capacity (with 2% TOCA-TA showing DPPH and ABTS radical scavenging rates of >74% and > 84%, respectively), and antibacterial activity (2%–4% TOCA produces inhibition zones of 15.1–23.9 mm against Escherichia coli (E.coli) and 17.1–26.8 mm against Staphylococcus aureus (S. aureus ). It shields against mechanical damage, maintains freshness, reduces dehydration and flavor loss, inhibits microbes, and extends shelf life to seven days. Easy to clean, it ensures a smooth strawberry surface. These findings highlight this polyphenol-induced polysaccharide film as an economical, green strategy for improving perishable food quality and safety.
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DOI
PubMed
高影响因子
Journal of Environmental Chemical Engineering
·
2026
·Vol. 14
·期 3
·122250
·
IF 7.5
Chengsong Zhong,Libo Yang,Aiguo Feng,Bihong Chen,Nannan Wang,Xinpeng Wang
Effective capture and sequestration of radioactive iodine from nuclear waste are crucial for environmental protection and human health. However, most existing iodine adsorbents are powder-based, which are unfavorable for post-reaction treatment and thus limit their widespread applicability. In this study, a silver-based metal-organic framework (Ag-MOF) was incorporated into amino-functionalized sodium alginate aerogel (SA-PEI) to form a novel moldable, size-tunable, and porous composite aerogel (Ag-MOF/SA-PEI). This integration introduces multiple iodine adsorption sites, including amino groups, carboxyl groups, imidazole nitrogen, and silver-oxo moieties. The synergistic interactions among these sites significantly enhance the binding affinity between the adsorbent and iodine species. Experimental results demonstrate that the Ag-MOF/SA-PEI aerogel can be applied for the capture and sequestration of radioactive iodine in both gaseous and liquid phases, with a saturated adsorption capacity of 6820 mg/g for gaseous iodine and 2400 mg/g for aqueous iodine. These capacities are substantially higher than those of pristine powdered Ag-MOF and SA-PEI with fewer adsorption sites. Notably, the composite exhibits excellent stability after gaseous iodine adsorption, with negligible iodine loss observed during a continuous 9-day monitoring period. Comprehensive structural characterizations and theoretical calculations have elucidated the underlying mechanism of iodine adsorption by Ag-MOF/SA-PEI. Therefore, this study presents a novel design of MOF-based composite aerogel adsorbents and demonstrates an effective approach for the capture and sequestration of iodine in multiphase environments, holding promising potential for practical applications.
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CARBOHYDRATE POLYMERS
·
2026
·
IF 13.2
Xinbo Ma,Xiaonan Huang,Xuelian Zhang,Jiani Zhang,Xinyu Sun,Yue Ma,Jiawei Li,Han Yu,Yantao Zhao,Xue Chao
Sodium alginate (SA)–based wound dressings have attracted increasing attention for wound management. In this study, a multifunctional injectable alginate hydrogel was developed via a dopamine modification strategy. Dopamine-grafted sodium alginate (SA-DA) was synthesized and combined with polydopamine nanoparticles (PDA) to obtain an SA-DA/PDA hydrogel with strong tissue adhesion and photothermal functionality. In situ crosslinking was achieved using a calcium carbonate (CaCO₃)/glucono-δ-lactone (GL) system, enabling rapid gelation and conformal coverage of irregular wounds. Benefiting from the hydrophilic SA backbone and PDA incorporation, the hydrogel exhibited favorable swelling behavior, structural stability, and enhanced photothermal responsiveness. Upon 808 nm near-infrared (NIR) irradiation (1.5 W cm −2 ) for 10 min, the hydrogel temperature increased to approximately 46 °C, generating an effective mild photothermal effect. This response resulted in efficient antibacterial activity, eliminating about 97% of Escherichia coli and Staphylococcus aureus in vitro, along with rapid pro-coagulant performance. In a rat model of infected full-thickness skin defects, a single injection followed by NIR irradiation significantly accelerated wound closure, reducing the residual wound area to 1% by day 9 without observable systemic toxicity. Overall, the SA-DA/PDA hydrogel integrates injectability, photothermal antibacterial activity, and biocompatibility, demonstrating strong potential as a multifunctional dressing for accelerated healing of infected wounds.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2026
·
IF 5.4
Xia Wang,Guiming Xie,Mengxue Chen,Xiang Ke,Chunliang Yang,Yongyong Shi,Yun Yi
The hierarchical porous carbon aerogels were prepared by dual molten salt method. • The symmetrical supercapacitor obtains 7.7 Wh·kg −1 at 60.0 W·kg −1 . • The symmetrical supercapacitor retains 96.23% capacity after 10,000 cycles. To boost the actual specific capacity and low rate performance of supercapacitors, it is necessary to effectively modulate storage sites of porous carbon materials, including microscopic defects and pore structures. In this study, a three-dimensional hierarchical porous carbon aerogel (KCA-0.5-0.5-800) was fabricated using sodium alginate as a biomass precursor via a synergistic activation strategy combining molten NaCl template and K 2 CO 3 chemical activation. The prepared material possesses an ultra-high specific surface area of 1908.4 m 2 ·g −1 and a large pore volume of 1.188 cm 3 ·g −1 , featuring a well-interconnected micro-meso-macroporous network and abundant structural defects. The KCA-0.5-0.5-800 electrode delivers a prominent specific capacitance of 286.4 F·g −1 at 0.5 A·g −1 in a three-electrode system, and maintains a capacitance retention of 72.11% at 5 A·g −1 . The assembled symmetric supercapacitor achieves a high energy density of 7.7 Wh·kg −1 at a power density of 60.0 W·kg −1 . Moreover, the device retains 96.23% of its initial capacitance along with a nearly 99.99% coulombic efficiency after 10 000 consecutive charge–discharge cycles at 5 A·g −1 . The prepared carbon aerogel showcases promising application prospects due to its unique structural features and outstanding electrochemical performance. Download: Download high-res image (175KB) Download: Download full-size image
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CARBOHYDRATE POLYMERS
·
2023
·
IF 11.2
Tuo Li,Huige Wei,Yingying Zhang,Tong Wan,Dapeng Cui,Shixiang Zhao,Teng Zhang,Yanxiu Ji,Hassan Algadi,Zhanhu Guo,Liqiang Chu,Bowen Cheng
Strong and ductile sodium alginate (SA) reinforced polyacrylamide (PAM)/xanthan gum (XG) double network ionic hydrogels were constructed for stress sensing and self-powered wearable device applications. In the designed network of PXS-M n+ /LiCl (short for PAM/XG/SA-M n+ /LiCl, where M n+ stands for Fe 3+ , Cu 2+ or Zn 2+ ), PAM acts as a flexible hydrophilic skeleton, and XG functions as a ductile second network. The macromolecule SA interacts with metal ion M n+ to form a unique complex structure, significantly improving the mechanical strength of the hydrogel. The addition of inorganic salt LiCl endows the hydrogel with high electrical conductivity , and meanwhile reduces the freezing point and prevents water loss of the hydrogel. PXS-M n+ /LiCl exhibits excellent mechanical properties and ultra-high ductility (a fracture tensile strength up to 0.65 MPa and a fracture strain up to 1800%), and high stress-sensing performance (a high GF up to 4.56 and pressure sensitivity of 0.122). Moreover, a self-powered device with a dual-power-supply mode, i.e., PXS-M n+ /LiCl-based primary battery and TENG, and a capacitor as the energy storage component was constructed, which shows promising prospects for self-powered wearable electronics.
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PubMed
高影响因子
FOOD RESEARCH INTERNATIONAL
·
2023
·
IF 8.1
Sijie Wu,Lu Wang,Yingying Zhao,Bilian Chen,Dan Qiu,Peilong Sun,Ping Shao,Simin Feng
Enhancing the bio-based hydrogels strength is fundamental to extend their engineering applications. In this study, high strength cold-set sodium alginate/whey protein nanofiber (SA/WPN) double network hydrogels were prepared and their interaction with curcumin (Cur) was studied. Our results indicated that the rheological and textural properties of SA/WPN double network hydrogels were enhanced with increasing WPN by forming SA-COO − -Ca 2+ - − OOC-WPN bridge through electrostatic interactions. The storage modulus (768.2 Pa), hardness (273.3 g), adhesiveness (318.7 g·sec) and cohesiveness (0.464) of SA/WPN50 (WPN concentration of 50 mg/mL) double network hydrogels were 3.75, 2.26, 3.76 and 2.19 times higher than those of SA hydrogels, respectively. Cur was combined with SA/WPN hydrogels through hydrogen bonding, van der Waals forces and hydrophobic interactions with an encapsulation efficiency of 91.6 ± 0.8 %, and the crystalline state was changed after binding. In conclusion, SA/WPN double network hydrogels can be enhanced by the addition of WPN and have potential as carriers for hydrophobic bioactive substances.
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COMPOSITES SCIENCE AND TECHNOLOGY
·
2022
·
IF 9.879
Xingyun Ye,Yingjiao Ma,Zhuoyue Tian,Hanxue Sun,Zhaoqi Zhu,Jiyan Li,Weidong Liang,An Li
Photothermal energy conversion and storage though phase change materials (PCMs) composites is one of the ideal methods for the efficient utilization of solar energy which is regarded as the cleanest and most sustainable renewable energy. Herein, a series of Ti 3 C 2 -introduced PCMs composites were developed by melt-dipping method exploiting MXene/sodium alginate/carbon nanotubes (CNTs) hybrid aerogels as supporting materials and tetradecylamine (TDA) as the impregnated PCM. The utilization of MXene is to enhance the light absorption performance of PCM composites which has significantly improved their absorbance under an extremely high loading rate exceeding 91.0 wt%. This result contributed to a high photothermal energy conversion efficiency up to 84.95% and an excellent thermal energy storage density with a relatively high latent heat up to 217.8 kJ/kg. Notably, the hybrid TDA/aerogel composites also exhibited remarkable cycling and crystallinity stability; their melting enthalpy still maintain up to 192.0 kJ/kg after 300th thermal and cooling cycles. Additionally, the obtained PCM composites also possess marvelous mechanical property and enhanced thermal conductivity . The excellent comprehensive performance demonstrated that the resultant composites show great potential application in solar energy conversion and storage.
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高影响因子
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
·
2022
·Vol. 331
·期 6
·2795-2804
·
IF 1.754
Luo Qingyun,Jin Tianxiang,huang Jie,Liu Zhirong,Huang Dejuan,Qian Yong
Abstract A novel phytic acid-doped sodium alginate aerogel (Alg-PA) was prepared via a simple doping and freeze-drying method and was used as a self-supporting electrode material to remove uranium ions from aqueous solutions. The effects of chemical composition, UO 2 2+ concentration, solution pH, and applied voltage on the adsorption of UO 2 2+ were investigated. Chemical adsorption was found to be the main mechanism of uranium adsorption and the application of voltage can effectively improve the adsorption capacity and adsorption rate in this removal system. The experimental maximum capacity of the Alg-PA electrode was 430.8 mg/g, while the theoretical maximum capacity of Alg-PA was found to be 563.8 mg/g. Moreover, Alg-PA also has a good reusability and selectivity to uranium ions. These advantages make Alg-PA a promising material for extracting of uranium from uranium-containing solutions. Graphical abstract
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Soft Matter
·
2022
·Vol. 18
·期 8
·1644-1652
·
IF 4.046
Wenshuai Zhang,Lingxiao Xu,Meijin Zhao,Yuning Ma,Ting Zheng,Lei Shi
Developing multifunctional hydrogels with stretchability, self-healing ability, adhesiveness, and conductivity into flexible strain sensors for human motion and health monitoring has attracted great attention and is highly desired. However, the present motion detectors mainly focus on stretching, bending, and twisting of different body parts while the expansion–contraction motion has been rarely investigated. In this study, along with carbon nanotubes (CNTs) as conductive components, sodium alginate (Alg) modified with 3-aminophenylboronic acid (PBA) and dopamine (DA) were synthesized and employed as precursors to prepare a multifunctional Alg-CNT hydrogel. The formed dynamic covalent bonds between PBA and DA endowed the hydrogel with a rapid self-healing property (30 s) while the introduction of CNTs remarkably enhanced the mechanical strength and electrical conductivity of the hydrogel. Moreover, the as-prepared hydrogel displayed a satisfactory stretchability (500%) and self-adhesiveness to various substrates. When used as a strain sensor, the Alg-CNT hydrogel that exhibited a fast response (150 ms) and ultra-durability (over 30 000 cycles) was demonstrated to be capable of monitoring subtle expansion–contraction motions (e.g., human breathing and mouse heart beating) via periodic and repeatable electrical signals. Therefore, this multifunctional hydrogel is highly suitable for monitoring expansion–contraction motions, indicating its potential applications in personal health monitoring.
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PubMed
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FOOD HYDROCOLLOIDS
·
2022
·
IF 11.504
Yuanyuan Liu,Yifan Zhang,Meiyang Zhen,Yuangen Wu,Meihu Ma,Yuxin Cheng,Yongguo Jin
The catechin and tannins as crosslinking and antioxidant compounds were added into sodium alginate/gelatin/poly(vinyl alcohol) (SA/GEL/PVA) blend film with 0.5%, 2%, and 5% (based on the total mass of polymers), respectively. This study aims to investigate the effect of different polyphenols on the structural and functional properties of food packaging film. Molecular interactions among polyphenols and polymers in film-forming solution (FFS) were analyzed based on the rheological behavior, low field nuclear magnetic resonance (LF-NMR), and the changes in structural characteristic of modified films were analyzed through Fourier transform infrared spectra (FTIR), Scanning electron mcroscopy (SEM) and X-ray diffraction (XRD) analysis. The results indicated that the crosslinking degree of the polymer network in FFSs modified by tannins was higher than that of catechin. The mechanical properties, water insolubility, water vapor barrier performance and antioxidant activity of the blend film were improved by polyphenols addition. The film modified by 2% tannins showed the highest tensile strength and elongation at break in comparing with catechin modified films. This study demonstrated that the tannins have a great potentiality in enhancing the structure and function of SA/GEL/PVA blend film.
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高影响因子
危险品化学品经营许可证（带存储）