DIAMOND AND RELATED MATERIALS
·
2022
·
IF 3.806
Yu Chen,Lingxiao Fang,Yang Hu,Yao Lu,Jiacheng He,Shiwei Wang,Quanling Yang,Zhuqun Shi,Chuanxi Xiong
High-performance energy storage devices are in increasing demand for the rapid development of social economy, among which supercapacitors stand out due to their high power density and long cycle life. Here, carbonized cellulose nanofibrils were used to form porous carbon aerogels . And nitrogen from urea was doped in the carbon aerogels to enhance the chemisorption ability and wettability of the surface of carbon materials. Afterwards, manganese oxide/nitrogen-doped carbon aerogels were fabricated through a simple hydrothermal reaction . The composites with a 1:40 mass ratio of carbon aerogels: urea (40-NCMn) showed a maximum specific capacitance of 275.5 F g −1 at 1 A g −1 and an acceptable rate performance of 65.4% when the current density increased 10 times. Using 40-NCMn for positive electrode and activated carbon (AC) for negative electrode , an asymmetric supercapacitor was assembled. It delivered a maximum energy density of 23.3 W h kg −1 and a power density of 600 W kg −1 at 0.5 A g −1 . After 3000 cycles at 5 A g −1 , it could retain 99.2% of the initial capacitance, implying the manganese oxide/nitrogen-doped carbon aerogel a promising material for supercapacitor electrodes.
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高影响因子
COMPOSITES PART B-ENGINEERING
·
2020
·
IF 7.635
Danning Hu,Yande Cui,Kangwei Mo,Junmei Wang,Yanan Huang,Xiaran Miao,Jinyou Lin,Chunyu Chang
Hydrogels consisting lots of water resemble the human soft tissues, but their disordered structures and weak mechanical properties usually limit their biomedical applications . Herein, a facile strategy to prepare highly ordered nanocomposite hydrogels with ultrahigh strength is reported, where the oriented tunicate cellulose nanocrystals (TCNCs) were locked in polymeric networks. Firstly, a stretchable supramolecular hydrogel was prepared by loosely crosslinking adamantine moiety contained polymers with β -cyclodextrin modified TCNCs through host-guest interaction. Subsequently, dual physically cross-linked hydrogel was constructed by introducing Fe 3+ ions into the pre-stretched supramolecular hydrogel for the formation of coordination bonds and freezing of oriented TCNCs. The resultant hydrogels exhibited ultrahigh tensile strength , elastic modulus , and toughness, along the direction of pre-stretching. The aligned TCNCs as both multifunctional cross-linking agents and interfacial compatible reinforcements of dual physically cross-linked networks largely contributed to the excellent mechanical performance of nanocomposite hydrogel. Our findings provide a universal method for designing hydrogels with highly ordered architectures and outstanding mechanical performances as potential biomimetic materials for biomedical applications .
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INDUSTRIAL CROPS AND PRODUCTS
·
2023
·
IF 5.9
Gaopan Dong,Zhengqiu Yuan,Xiujuan Guo
Petroleum-based plastics are widely used because of their practicable properties and low cost. However, people are equally concerned about the environmental damage generated by non-biodegradable petrochemical plastics. In this study, pinewood was employed as the raw material to prepare cellulose acetate and further synthesize the degradable composite films, which showed potential feasibilities to substitute the traditional petroleum-based plastics. In order to improve the barrier performance, hydrophobic performance, and mechanical properties of the film materials , nano-SiO 2 was introduced as functional filler for experimental exploration. The tensile strength, light transmittance, water vapor transmittance, microstructure, and crystalline structure of the nano-SiO 2 /pinewood-derived cellulose acetate composite films were determined by mechanical analysis, optical analysis, SEM, XRD , FT-IR, and barrier characterization methods, respectively. The results exhibited that the prepared films with the inclusion of nano-SiO 2 did not conduct reduction in transparency due to its good dispersion in the composite film. The barrier property, hydrophobic performance, and mechanical properties of cellulose acetate composite film were effectively improved due to the interaction between nano-SiO 2 and cellulose acetate molecular chains by the hydrogen bonds formed between hydroxyl groups. It was confirmed that the nano-SiO 2 /pinewood-derived cellulose acetate composite films exhibit great application potential as an environmentally friendly and efficient material for packaging.
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CARBOHYDRATE POLYMERS
·
2022
·
IF 10.723
Xuefeng Li,Huixia Lv,Fanli Shi,Jie Song,Zhenhai Zhang
In this study, high-substituted hydroxypropyl cellulose (HHPC) and low-substituted hydroxypropyl cellulose (LHPC) were orally administered (150 or 300 mg/kg) to investigate the inflammation inhibitory effects on DSS-induced colitis mice. In addition, the anti-inflammatory potential of HHPC in-vitro (RAW 264.7 cells) was evaluated. The result showed that HHPC could inhibit the excessive secretion of TNF-α, IL-6, and NO in RAW 264.7 cells induced by lipopolysaccharide . Oral administration of HHPC and LHPC could dose-dependently mitigate the pathological damage of colon tissue, suppressed spleen edema, preserved thymus index, reduced the serum level of inflammatory mediators (TNF-α, IL-6, IL-1β, and MPO), increased the secretion of sIgA in the colon, and restored the balance of the intestinal flora such as Rikenellaceae_RC9_gut_group, Lachnospiraceae_UCG-006, and Blautia . Overall, this study elucidated the therapeutic potential of LHPC and HHPC as a prebiotic to treat acute ulcerative colitis.
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DOI
PubMed
高影响因子
Energy Technology
·
2021
·Vol. 9
·期 7
·2100114
·
IF 3.631
Baiqing Zhao,Maoxia Yang,Jianying Li,Shaomin Li,Gen Zhang,Shiqi Liu,Yanhua Cui,Hao Liu
Fabricating robust succinonitrile-based plastic crystal electrolyte (PCE) membranes with abundant and sustainable polymer skeleton and reinforcing the stability of the PCE–lithium anode interface are essential for adopting PCE in all-solid-state lithium metal batteries (ASSLMBs). Herein, renewable and low-cost cellulose is utilized as the mechanical support framework to prepare the self-standing cellulose-based PCE (C-PCE) through the facile tape-casting method. The cellulose matrix provides excellent robustness to the hybrid C-PCE system. The fabricated C-PCE shows an ionic conductivity of about 2.1 × 10 −4 S cm −1 and a tensile strength of over 0.5 MPa at room temperature. Solid-state lithium batteries assembled with the Li 4 Ti 5 O 12 cathode, lithium metal anode, and the prepared electrolyte films exhibit an initial capacity surpassing 155 mAh g −1 at 0.2 C and room temperature. This work presents a new attempt to use low-cost cellulose and common additives to prepare high-performance PCE membranes for lithium-battery applications.
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INDUSTRIAL CROPS AND PRODUCTS
·
2022
·
IF 6.449
Ningning Lv,Ming Zhao,Li Hao,Xinhua Zhou,Huayao Chen,Hongjun Zhou
Eugenol (EUG) is a natural compound with antibacterial and insect repellent activity. Its processing, utilization, and storage are limited due to its strong volatility, instability, and low solubility in water. In this study, an amphiphilic polymer-based nano-green coating (CMC-CYST-EUG) based on carboxymethyl cellulose (CMC) has been prepared, EUG was grafted into CMC by thiol-ene click reaction of Cysteamine hydrochloride (CYST) to reduce the volatility of EUG. When exposed to the same environment, the antibacterial duration of CMC-CYST-EUG increased by 7.8 times compared with pure EUG. Liquid holding capacity of CMC-CYST-EUG on pakchoi leaf surface increased by 81% compared with EUG solution. It shows that CMC-CYST-EUG has good adhesion to fruits and vegetables and can prevent the loss of EUG. Strawberry treated with CMC-CYST-EUG can be stored for 7 days. Within the concentration range of 0.5–0.25 mg/mL, the antifeedant rate of CMC-CYST-EUG to pests was significantly higher than that of EUG. Importantly, cytotoxicity tests show that CMC-CYST-EUG is considered safe at low concentrations. This synthetic material provides a strategy for the development and utilization of volatile active substances.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2025
·
IF 9.7
Jie Gao,Yaowu Zhang,Rujian Jiang,Lu Zhou,Lingwan Hao,Lingjie Song,Bin Xu,Leisheng Zhang,Jie Zhao
Infectious bacteria tend to colonize and culture on varying fabrics in daily life, then spread by human activity, posting a long-lasting threat to personal and public safety. Owing to the remarkable photocatalysis capacity, facile hydrothermal synthesis, low toxicity, and stable biocompatibility, metal-organic frameworks (MOFs) are ideal candidate materials for integrating antibacterial function on fabric fibers to control the spread of pathogens. However, the preparation of MOF thin films (MOF-TFs) on fibers generally depended on sophisticated reaction conditions and tedious procedures, resulting a limitation of real applications. Herein, we report an ultrafast, scalable, and low toxicity strategy to assemble MOF-TFs onto cellulose fibers. For the first time, MOFs nanoparticles could facilely and rapidly assemble on the cellulose fibers via dopamine (DA)-mediated codeposition in a neutral aqueous environment (pH = 7) within 10 min, representing a 72-fold reduction in assembly time compared to the conventional polydopamine (PDA)-assisted methods. Three types of MOFs, including porous coordination network-224 (PCN-224), porphyrinic zirconium metal-organic framework (MOF-525), and zeolitic imidazolate framework-8 (ZIF-8) were hired to exam the assemble ability of this method. Molecular dynamics and density functional theory calculation revealed that noncovalent interactions including hydrogen bond formation and electrostatic interaction between DA/MOF composite and the cellulose fibers accounted for the ultrafast assembly of the MOF-TFs, in sharply contrast to conventional polymerization-driven mussel-inspired adhesion. As a proof-of-concept, the resultant films retained the inherited photocatalysis and adsorption properties of MOFs, enabling efficient L-arginine loading (as a model drug) and demonstrating photocatalysis property to achieve efficient antibacterial performances. Overall, this study advances the DA or PDA-mediated MOF assembly theory and provides a rapid, versatile, scalable route for fabricating functional MOF-TFs.
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产品关联
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2025
·
IF 8.5
Huimin Shen,Tianxing Wang,Xuezhu Xu
Cellulose nanocrystals (CNCs) possess excellent mechanical strength, high crystallinity, and intrinsic biocompatibility, but their limited surface reactivity and weakly active reducing end groups restrict their application in functional materials. In this work, CNCs were modified with polyethyleneimine (PEI) to enhance surface functional density. The grafting of PEI onto CNCs significantly increased the availability of nucleophilic sites, strengthened the interaction between PEI and the aldehydic reducing ends, and enabled efficient crosslinking. As a result, PEI-modified CNCs displayed markedly enhanced properties, the surface-modified CNC-PEI(S) exhibited a zeta potential increase to ~ −28.3 mV, improved dispersion stability with an average particle size of 204.8 nm, and a maximum formaldehyde adsorption capacity of 11.8 % within 20 min at room temperature. It showed a fluorescence intensity enhancement responsive to formaldehyde concentrations ranging from 2 to 400 ppm. In contrast, the reducing-end modified CNC-PEI(R) demonstrated superior performance, with a formaldehyde removal efficiency of up to 55.3 % under the same conditions and a linear fluorescence response to low formaldehyde concentrations (20–400 ppb). Both materials retained the chiral nematic structure of native CNCs and exhibited significant thermal stability, with the maximum degradation temperature of CNC-PEI(S) reaching approximately 325 °C. These functionalized CNCs were successfully fabricated into freestanding films and integrated into a portable, low-cost detection device for rapid, visual quantification of aqueous formaldehyde under UV light. These findings demonstrate that PEI-functionalized CNCs provide a versatile platform for constructing high-performance bio-based materials suitable for environmental sensing and pollutant adsorption, offering a sustainable alternative to conventional detection and remediation technologies.
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产品关联
DOI
PubMed
高影响因子
LANGMUIR
·
2025
·
IF 3.9
Hanqi Mou,Di Pang,Yuchuan Wang,Ying He,Honglin Li,Lijuan Ye,Hong Zhang,Yan Tang,Wanjun Li
Humidity-responsive actuators, which can directly convert ambient humidity changes into controllable mechanical deformation, exhibit broad application potential in fields such as bionic robotics, smart wearable devices, and human-machine interactive systems. MXenes have emerged as ideal humidity-responsive materials due to their unique two-dimensional layered structure, exceptional surface hydrophilicity and electrical conductivity. However, their poor environmental stability severely limits their application in humidity-driven actuators. In this study, we designed a composite film (MXBC) based on MXene-Nb2CTx and bacterial cellulose (BC), where a three-dimensional layered-fiber interwoven structure synergistically enhances humidity-driven performance through a hydrogen-bonding network. The MXBC film demonstrates an ultrafast response of 536° within 0.5 s under ΔRH = 50%, along with remarkable cycling stability over 3000 cycles, while maintaining robust mechanical properties. Leveraging these advantages, we successfully developed various intelligent bionic devices, including biomimetic flytraps, artificial flowers, smart switches, and adaptive clothing. This study not only provides a new strategy for developing highly stable and multifunctional smart actuating materials but also expands the application of MXenes in environmentally adaptive soft robotics and interactive wearable systems.
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产品关联
DOI
PubMed
高影响因子
CELLULOSE
·
2020
·Vol. 28
·期 1
·273-288
·
IF 4.21
Lu Beili,Lin Qiang,Yin Zhu,Lin Fengcai,Chen Xuerong,Huang Biao
Robust and ultralight biofoams had been successfully prepared using readily available and biocompatible cellulose nanofibrils (CNFs) as the matrix. The γ-glycidoxypropyltrimethoxysilane (GPTMS) was first added into the CNFs suspension to act as a crosslinker to form covalent linkages between cellulose chains. Then the gelatin was incorporated into the networks via reacting with the epoxy groups on GPTMS and forming hydrogen bonding with CNFs. The content of gelatin had a significant influence on the properties of the obtained foams. With the introduction of a small amount of gelatin, the foams exhibited significantly enhanced mechanical properties and stability in water in comparison with the CNF foams without GPTMS and/or gelatin. The foams containing the appropriate ratio of gelatin to CNFs possessed the high porosity (99.16%), ultralow density (0.0077 g/cm 3 ), good mechanical properties, and abundant functional groups (hydroxyl and carboxylate groups). These features made it an ideal adsorbent toward methylene blue (MB) and the maximum adsorption capacity could reach up to 430.33 mg/g. Additionally, the cationic MB could be removed from the mixed cationic/anionic dye solutions with high selectivity, possibly due to the strong electrostatic interactions between MB and the adsorbent. Furthermore, the recycling test demonstrated the good reusability of this biofoam. Therefore, this work provides an environmentally benign method to fabricate robust CNF-based foams, which can be considered as green adsorbents for the treatment of water pollutants.
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JOURNAL OF MEMBRANE SCIENCE
·
2022
·
IF 10.53
Zhanghua Zou,Zhiyu Hu,Hongting Pu
Low-dimensional nanomaterial separators are considered prime candidates for next-generation lithium-ion battery separators due to their higher porosity and thinner thickness. For polyolefin materials, there is no suitable solvent for solution electrospinning, the low yield of melt electrospinning, and the large size of melt-blown fibers make it challenging to efficiently prepare polyolefin low-dimensional nanomaterials. Moreover, polyolefin materials have been criticized for poor electrolyte wettability and insufficient thermal stability. Herein, polypropylene (PP) nanobelts (NBs) are prepared via a high-efficient nanolayer co-extrusion technique as supporting skeleton to suppress the shrinkage of natural cellulose separators during dehydration effectively, and the cellulose fibers have optimized pore size to prevent internal short circuits. The results indicate that the as-prepared PPNBs/cellulose composite separator (PPNBs/CS) with sandwich structure has superior porosity (78.4%) and ionic conductivity (1.04 mS cm −1 ). Meanwhile, the thermal stability, electrolyte uptake, and tensile strength are all significantly improved due to the synergies between PPNBs and cellulose fibers. More importantly, the LiFePO 4 ||PPNBs/CSs||LM half cells exhibit better rate-performance and cycling durability than Celgard® 2400. Similarly, the NCM811||LM half cells and NCM811||graphite full cells assembled from PPNBs/CS-1/2 also exhibit good electrochemical performance. This work opens a new approach for easy batch preparation of high-performance lithium-ion battery separators.
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高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2024
·
IF 7.7
Fei He,Xue-Ke Ma,Cheng-Kai Tu,Hui Teng,Xin Shao,Jie Chen,Meng-Xin Hu
Supplementing probiotics or indigestible carbohydrates is a usual strategy to prevent or revert unhealthy states of the gut by reshaping gut microbiota. One criterion that probiotics are efficacious is the capacity to survive in the gastrointestinal tract. Biofilm is the common growth mode of microorganisms with high tolerances toward harsh environments. Suitable scaffolds are crucial for successful biofilm culture and large-scale production of biofilm-phenotype probiotics. However, the role of scaffolds containing indigestible carbohydrates in biofilm formation has not been studied. In this study, porous zein/cellulose composite scaffolds provided nitrogen sources and carbon sources simultaneously at the solid/liquid interfaces, being beneficial to the biofilm formation of Lactobacillus reuteri . The biofilms showed 2.1–17.4 times higher tolerances in different gastrointestinal conditions. In human fecal fermentation, the biofilms combined with the zein/cellulose composite scaffolds act as the “synbiotics” positively modulating the gut microbiota and the short-chain fatty acids (SCFAs), where biofilms provide probiotics and scaffolds provide prebiotics. The “synbiotics” show a more positive regulation ability than planktonic L. reuteri , presenting potential applications in gut health interventions. These results provide an understanding of the synergistic effects of biofilm-phenotype probiotics and indigestible carbohydrates contained in the “synbiotics” in gut microbiota modulation.
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高影响因子
危险品化学品经营许可证（带存储）