JOURNAL OF MEMBRANE SCIENCE
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2022
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IF 10.53
Haipeng Zhu,Renhao Li,Guozhen Liu,Yang Pan,Jiahui Li,Zhenggang Wang,Yanan Guo,Gongping Liu,Wanqin Jin
Pervaporation shows great potential in separation of organic-organic mixtures that are widely involved in chemical and petrochemical industries, while the separation performance of polymeric membranes is undesirable for practical application. In this work, we incorporated UiO-66 (ZrCl 4 ) metal-organic frameworks (MOFs) into chitosan (CS) membrane to separate methanol-dimethyl carbonate (DMC) mixtures. ZrOCl 2 ·8H 2 O or ZrCl 4 was selected as metal precursor to synthesize UiO-66, which aimed to investigate the structural defect of UiO-66 for the separation performance of mixed matrix membranes (MMMs). BET, 1 H NMR and low-angle XRD characterizations indicated that UiO-66 (ZrCl 4 ) with appropriate pore size is more suitable for preferentially permeate methanol over DMC. IR, dielectric relaxation and DSC characterizations combined with molecular simulations revealed the ideal interfacial morphology of UiO-66/CS MMMs was owing to the favorable molecular interactions including hydrogen bond interaction and van der Waals interaction. Pervaporation separation of methanol-DMC mixtures demonstrated that UiO-66 (ZrCl 4 ) nanofillers can simultaneously enhance the permeation flux and separation factor of CS membrane. The optimized 10 wt% UiO-66 (ZrCl 4 )/CS MMM exhibited total flux and methanol/DMC separation factor of 355 g/m 2 h and 337 for 10 wt% methanol-DMC mixtures at 50 °C, which were 3.4-fold and 25-fold higher than that of the pure CS membrane, respectively, and outperformed the state-of-the-arts polymer-based membranes.
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高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2020
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IF 5.162
Xianglin Huang,Sheng Feng,Guiliang Zhu,Wei Zheng,Cong Shao,Ning Zhou,Qi Meng
The novel ILCS/U-X powder materials were fabricated by depositing UiO-66 on ionic liquid modified chitosan, and different doping ratio materials were used to adsorb 2,4-dichlorophenoxyacetic acid in aqueous solution. The samples were characterized by X-ray powder diffraction, Fourier transform infra-red, X-ray photoelectron spectroscopy, Scanning electron microscopy, Brunauer-Emmett-Teller, Barrette-Joyner-Halenda, Thermal gravimetric analyzer, Energy dispersive spectrometer and Zeta potential . Adsorption experiments revealed that temperature and pH have a great influence on adsorption, and all adsorbents have the highest adsorption at low temperature and weak acid. The dependence of ILCS/U-X on pseudo-second order model and Temkin model was observed. Compared to other ratios, the Micro-doped ILCS/U-10 has the largest adsorption capacity and can quickly complete adsorption within 60 min. ILCS/U-10 also has good stability and can be recycled many times. Hydrogen bonding and electrostatic interaction are the two most important forces that dominate adsorption.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2020
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IF 5.162
Yini Liu,Debao Wang,Zhilan Sun,Fang Liu,Lihui Du,Daoying Wang
In this study, antibacterial nanofiber films were prepared by electrospinning gelatin, chitosan, and 3-phenyllactic acid (PLA). The addition of PLA improved the microstructures of the nanofibers, and the nanofiber films (GCP-1 and GCP-2) had uniform and continuous structures with a diameter range of 40‐–70 nm when the PLA concentrations in the polymers were 1% and 2%. Under acidic conditions, chitosan and PLA interacted and formed hydrogen bonds , which decreased the crystallinity of the nanofiber films. The GCP-2 nanofiber film had the best thermal stability , water stability, and water vapor permeability. Compared with the control GCP-0 film, the four nanofiber films with PLA (GCP-1, GCP-2, GCP-3, and GCP-4) had more effective antibacterial effects, and GCP-2 film reduced approximately 4 log CFU/mL of Salmonella enterica Enteritidis and Staphylococcus aureus in 30 min. Results suggested that the GCP-2 nanofiber film mat can be used as an active food packaging.
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JOURNAL OF DISPERSION SCIENCE AND TECHNOLOGY
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2019
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IF 1.479
Jialiang Chen,Lirong Fu,Yan Li,Xiaodeng Yang,Beibei Wang,Chunlin Xu,Tianduo Li
To illuminate the interactions in N-[(2-hydroxyl)-propyl-3-trimethyl ammonium] chitosan chloride (HTCC)/sodium carboxymethyl cellulose (CMC) based films, the film-forming solutions were studied by rheology, and HTCC/CMC based films were characterized by Fourier transform infrared spectroscopy, scanning electron microscopy and thermogravimetric analysis. The HTCC/CMC based film-forming solutions with glycerol (polyvinyl alcohol (PVA) and anthocyanin) showed shear-thinning behavior. The apparent viscosity of the HTCC/CMC/glycerol (PVA and anthocyanin) film-forming solutions decreased slower than that of HTCC/CMC film-forming solution, due to the electrostatic interaction between HTCC and CMC, and hydrogen bonding interaction between the two biomacromolecules and glycerol, PVA and anthocyanin, which resulted in the formation of three-dimensional networks. The anthocyanin with rigid molecular structure formed different three-dimensional matrix with HTCC/CMC, resulted in viscosity dominated film-forming solution. The pH affected the electrostatic interaction between HTCC, CMC, and anthocyanin through neutralizing –COO− groups, and temperature showed a synergistic effect on both electrostatic interaction and hydrogen bonding. The inter-molecular interactions resulted in the red-shift of typical absorption peaks, and the increase of initial decomposition temperature and decomposition enthalpy of HTCC/CMC based films. The homogenous and smooth surface, and the compact texture of HTCC/CMC based films confirmed the intermolecular interaction between HTCC, CMC, and PVA (glycerol and anthocyanin).
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高影响因子
Desalination and Water Treatment
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2024
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IF 1
Liu-Qin Ge,You-Zhou Zhou,Neng Fan,Mei-Sheng Xia,Ling-Qing Dai,Ying Ye
Shell powder (SP) with chitosan (CS) immobilized was applied as a composite biosorbent (CS-SP) for adsorptive removal of Congo red from aqueous solution. The materials were characterized using Fourier transform infrared spectroscopy, X-ray diffraction, and scanning electron microscopy. Dye adsorption onto SP and CS-SP was investigated under varied conditions such as chitosan content, initial dye concentration, pH, salt concentration, and temperature. The optimum CS content was determined as 15 wt%, under which CS-SP displayed a fine coating structure and a greater adsorption capacity of 258.53 mg/g compared with 36.50 mg/g for SP at 30°C. The composite adsorbent maintained its performance in high-salinity, acidic or alkaline environment, and exhibited excellent reusability throughout five-recycle regeneration. The dynamic data conformed to pseudo-second-order and Elovich models while the equilibrium isotherms followed Langmuir and Temkin models, which revealed that chemisorption was involved in the adsorption mechanism. Besides, the maximum monolayer adsorption capacity for CS-SP reached 263.85, 283.29, 322.58 mg/g at 30°C, 40°C, and 50°C, respectively, and adsorption on CS-SP was verified to be endothermic and spontaneous from thermodynamic study. The results indicated that the prepared CS-SP biosorbent is quite promising for dye wastewater treatment.
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FOOD HYDROCOLLOIDS
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2024
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IF 11
Mingxia Wang,Yaqian Li,Yuxuan Zhao,Huiling Gao,Zhaochu Xu,Liang Chen,Jianzhang Liu,Hao Liang
As a typical biofilm disease, dental caries is a public healthcare problem and high sugar diets increase the risk of dental caries. Cationic nanomaterials play an important role in targeting and removing of biofilms, but their negative effects on normal cells have always caused widespread concern. In this work, pH-triggered charge-switching nanoparticles (SC&CS NPs) with selectable targeting were skillfully constructed by electrostatic adsorption and chemical cross-linking of sodium caseinate (SC) and chitosan (CS) to develop functional foods. SC&CS NPs were negatively charged and stable at pH 7.4. Once encountering in acidic microenvironment below pH 5.7, the potential of SC&CS NPs converted to positive. Based on this property, SC&CS NPs could identify the infected sites of biofilms to selectively target bacteria, while not interacting with cells in the normal physiological environment, thereby avoiding damage to normal cells. Besides, SC&CS NPs were excellent delivery systems that could effectively encapsulate bioactive ingredients with high loading efficiency (12.16 ± 0.04%) and release bioactive ingredients on demand. Moreover, after being encapsulated by SC&CS NPs, the antibacterial and anti-biofilm activities of bioactive ingredients were significantly improved. The charge-switching nanomaterials are expected to provide a safer, more effective, and smarter strategy for functional foods.
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SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
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2025
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IF 4.6
Qingyi Wei,Jingjun Chen,Jingxiao Yu,Hongbin Pu
The development of a dual-functional nanomaterial integrating microbial detection and sterilization capabilities are of great significance for advancing food safety applications. In this work, we synthesized carboxymethyl chitosan coated with spherical silver nanoparticles (CMCS@Ag NPs). CMCS@Ag NPs exhibited improved stability of surface-enhanced Raman scattering (SERS) signals compared to single silver NPs in the detection of three strains including E. coli , S. aureus and S. putrefaciens . Through deuterium isotope labelling, metabolically active bacterial cells produced characteristic carbon-deuterium (C–D) vibrational signatures detectable by Raman spectroscopy. The spectral overlap between C-D and C–H stretching modes showed concentration-dependent linear responses, achieving a detection sensitivity of 0.64 CFU/mL for E. coli . Meanwhile, different combinations of algorithm were used to pretreatment with the raw Raman spectra, among that adaptive iterative reweighting punishment least square method and moving average smoothing (air-PLS + MAS) sensitively obtain better preprocessing accuracy of the three strains. Principal component analysis (PCA) was used to extract characteristic peaks from pretreatment spectra to successfully discriminate the three microorganisms. Furthermore, CMCS@Ag NPs incubated with phosphate-buffered saline (pH ∼ 5.8) exhibited potent antibacterial activity, achieving 99 % reduction in viability for E. coli , S. aureus and S. putrefaciens at a concentration of 5 × 10 7 CFU/mL within 45 min. This work presents a versatile nanomaterial-based strategy for simultaneous pathogen detection and inhibition.
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产品关联
DOI
PubMed
高影响因子
TALANTA
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2025
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IF 6.1
Jie Liu,Hao Deng,Qing-Chun Yin,Min-Fu Wu,Lin Luo,Hong Wang,Zhen-Lin Xu,Bao-Zhu Jia
Organophosphorus pesticide residues pose significant threats to food safety and environmental health, and their monitoring methods demand sensitivity and anti-interference capability. In this study, we developed a novel ratiometric fluorescent immunosensor for fenitrothion (FN) detection by employing chitosan-modified platinum nanoparticles (Ch-Pt NPs) as catalytic nanozymes. Ch-Pt NPs exhibit oxidase-mimicking activity, enabling the oxidation of ascorbic acid (AA) and o -phenylenediamine (OPD) to produce dehydroascorbic acid (DHAA) and 2,3-diaminophenazine (DAP, Em = 568 nm), respectively. Then, DHAA further reacted with the remaining OPD to generate quinoxaline derivatives (DFQ, Em = 430 nm). These two products further form ratiometric fluorescent signals. Taking AA as a breakthrough point, the dual-catalytic cascade of natural enzymes and nanozymes was achieved by the combination with the alkaline phosphatase (ALP) -based enzyme-linked immunosorbent assay (ALP-ELISA). Compared with the conventional colorimetric ELISA, the proposed sensor demonstrated a nearly 20-fold enhancement in sensitivity (detection limit: 0.48 ng/mL) and achieved satisfactory recoveries of 80.0–108.3 % in spiked samples. The ratiometric fluorescent immunosensor demonstrates outstanding performance and holds great potential for extensive applications in the field of pesticide monitoring.
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DOI
PubMed
高影响因子
REACTIVE & FUNCTIONAL POLYMERS
·
2024
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IF 4.5
Jing Chen,Fei Rong,Yibing Xie
Polyvinyl alcohol (PVA)/chitosan (CS) nanofibers modified with carbon nanotubes (CNT) and silver (Ag) particles are electrospun onto a graphite plate (GP) substrate to form the PVA-CS-CNT-Ag/GP electrode for electrochemical sensor application. Microstructure characterization demonstrates that PVA-CS nanofibers exhibit a loose and porous network structure, significantly improving the effective reaction surface area. Electrochemical measurements show the PVA-CS-CNT-Ag/GP electrode exhibits the limit of detection of 23.2 μM, the linear range of 65–176,460 μM and the sensitivity of 3.3945 μA cm −2 mM −1 . Anti-interference test results show that the sensor has high selectivity towards H 2 O 2 . Stability test results indicate that the sensor exhibits good stability, as evidenced by the response current of 83.94 % after a period of 30 days. Simulation calculations indicate that PVA-CS-CNT-Ag exhibits lower interfacial energy (−2.3293 eV) compared to PVA-CS-CNT (−0.3674 eV) and PVA-CS-Ag (−0.7646 eV), smaller band gap (0.318 eV) compared to PVA-CS (3.640 eV), higher density of states at Fermi level (14.7332 electrons/eV) than others. Experimental measurements and simulation calculations indicate that PVA-CS-CNT-Ag electrospun nanofibers exhibit promising potential as an electroactive material for the electrochemical detection of H 2 O 2 .
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CARBOHYDRATE POLYMERS
·
2024
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IF 10.7
Qing Li,Xiaomin Lai,Yun Duan,Fuchen Jiang,Yingxi Li,Zhen Huang,Shuang Liu,Ying Wang,Can Jiang,Chen Zhang,Xiaoli Pan
Extensive traumatic injuries and difficult-to-heal wounds, induced by many circumstances, impose a significant social and economic burden on an annual basis. Thus, innovative wound dressings that encourage wound healing are greatly needed. In this work, we prepared a novel insect chitosan (MCS) using waste pupal shells from housefly ( Musca domestica L.) culture. After conducting comparative investigations with commercially available chitosan, it was shown that MCS exhibited comparable qualities and may be used as a substitute source of commercial chitosan. A quaternized chitosan/pullulan/citric acid three-dimensional nanofiber sponge (3D-NS) of natural origin was prepared by electrostatic spinning and gas foaming techniques after MCS was quaternized. In vitro , tests showed that the 3D-NS had a higher liquid absorption capacity than the two-dimensional nanofibrous membrane (2D-NM). Additionally, the 3D-NS showed improved hemostatic, pro-cell proliferation, antibacterial, and anti-inflammatory qualities. In vitro , tests demonstrated that 3D-NS could inhibit the release of inflammatory factors, promote angiogenesis, accelerate collagen deposition, and promote wound contraction. These effects considerably facilitated the healing process of wounds in rats with full-thickness skin damage. In conclusion, the great bioactivity and physicochemical properties of 3D-NS render it an optimal candidate for developing novel wound dressings.
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DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2025
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IF 8.2
Gaoyi Wu,Wei Shi,Moran Liu,Lixin Liang,Tao Wang,Jinyong Zhang,Jing Chen,Yongsheng Liang,Wei Tang,Hui Li
Hydrogels have emerged as promising candidates for flexible sensors due to their softness, biocompatibility, and tunable physicochemical properties. However, achieving synchronous satisfaction of conformality, conductivity, and diverse biological functions in hydrogel sensors remains a challenge. Here, we proposed a multifunctional hydrogel sensor by incorporating silver-loaded polydopamine nanoparticles (Ag@PDA) into a thermally cross-linked methacrylamide chitosan (CSMA) and acrylamide network, namely, Ag@PDA/(CSMA-PAM). The Ag@PDA/(CSMA-PAM) hydrogel showed the capability to respond effectively to both strain and pressure, enabling its independent application as either a strain sensor or a pressure sensor. The sensitivity of the hydrogel can reach 2.13 within the strain range of 65 to 150%, exhibiting a response and recovery time of 550 ms when utilized as a strain sensor. In contrast, its sensitivity was 0.07 kPa–1 during pressures ranging from 0 to 2.15 kPa, with a response and recovery time of 136 ms when employed as a pressure sensor. Additionally, the hydrogel sensor demonstrated high linearity (0.998 for strain and 0.98 for pressure), stable cycling ability (500 cycles), and low detection limit (0.5% for strain and 150 Pa for pressure). Moreover, the Ag@PDA/(CSMA-PAM) hydrogel exhibited good stability and reliability for a variety of practical applications, including the detection of subtle and large deformations, as well as real-time physiological activity monitoring. Further, owing to the bioactive components of chitosan and Ag@PDA present in the hydrogel, the Ag@PDA/(CSMA-PAM) sensor exhibited satisfactory biocompatibility along with excellent antioxidant and antibacterial activities, making it highly promising for applications as wearable sensors in personalized healthcare.
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产品关联
DOI
PubMed
高影响因子
CARBOHYDRATE POLYMERS
·
2025
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IF 12.5
Haiyu Luo,Danyang Liang,Qing Liu,Li Niu,Khamiddolov Temirlan,Wenhao Li
Chitosan is used in food, medicine, and other fields because of its good biocompatibility, but its solubility restricts its application, and modification treatment can reduce the stability to improve its solubility in different pH solutions. This study investigated the effects of electron beam irradiation (EBI), cold plasma (CP), and their dual modification treatments on the structural, physicochemical, and functional properties of chitosan. The results showed that single EBI, CP treatment, and dual modification treatment did not significantly change the morphological structure of chitosan. Among them, the viscosity and thermal stability of single EBI- and CP-modified chitosan was reduced. Still, the antioxidant and antibacterial properties against Staphylococcus aureus and Escherichia coli were enhanced compared to native chitosan. Meanwhile, the viscosity, molecular weight, and thermal stability of dual-modified treated chitosan were further reduced, and the antioxidant and antibacterial properties were significantly improved compared to EBI and CP modification alone. This study shows that dual modification's effect was better than that of single modification treatment, especially single cold plasma treatment. This will also lead to the diversification of chitosan modification methods and promote its application in various aspects, such as preservation, food additives, functional food ingredients, and packaging materials.
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PubMed
高影响因子
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