Nanomaterials
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2019
·Vol. 9
·期 8
·1121
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IF 4.034
Shuangxi Nie,Yuehua Zhang,Linmao Wang,Qin Wu,Shuangfei Wang
Nanocomposites consisting of cellulose nanofibrils (CNFs) and nano-aluminum nitride (AlN) were prepared using a simple vacuum-assisted filtration process. Bleached sugarcane bagasse pulp was treated with potassium hydroxide and sodium chlorite, and was subsequently ultra-finely ground and homogenized to obtain CNFs. Film nanocomposites were prepared by mixing CNFs with various AlN amounts (0–20 wt.%). X-ray diffraction revealed that the crystal form of CNF-AlN nanocomposites was different to those of pure CNFs and AlN. The mechanical performance and thermal stability of the CNF-AlN nanocomposites were evaluated through mechanical tests and thermogravimetric analysis, respectively. The results showed that the CNF-AlN nanocomposites exhibited excellent mechanical and thermal stability, and represented a green renewable substrate material. This type of nanocomposite could present great potential for replacing traditional polymer substrates, and could provide creative opportunities for designing and fabricating high-performance portable electronics in the near future.Keywords:bagasse pulp;cellulose nanofibrils;cellulose nanocomposites;nano-aluminum nitride
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高影响因子
ACS Applied Polymer Materials
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2025
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IF 4.7
Ning Yan,Ting Gao,Li Hua,Fan Xie,Ruixin Liu,Zhaoqing Lu
A highly electrostatic cellulose acetate (CA)-based electret film for air filtration was fabricated by the electrospinning method assisted with the corona charging technique in this work. The highly polar and hydrophobic poly(vinylidene fluoride) (PVDF) was chosen as the electrostatic reinforcement. The results showed that under the dual electric fields, the dipole charges generated from the conversion from a nonpolar α-phase to a polar β-phase of the dipole inside PVDF and the space charge captured at the phase end traps of CA and PVDF give CA/PVDF films high static electricity. Especially, the composite film with 40 wt % PVDF exhibited an ultrahigh surface potential of 2.146 kV and excellent filtration efficiency of 97.27% for PM 0.3 with a pressure drop of only 88.7 Pa, which were 29.68 and 22.04%, respectively, higher than those of the pure CA film. It was noticed that the hydrophobicity and mechanical strength were also improved.
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Advanced Sustainable Systems
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2025
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IF 6.1
Siying Guo,Xin Zhao,Yuxi Chen,Xiaodan Wu,Zechang Wei,Chunxiang Ding,Chenyang Cai
Understanding the interaction between micro and nano assembly in optical composite scatters is important for developing high-performance radiative cooling materials. In this work, taking cellulose as a proof of concept, a series of photonic materials (MgO, BaSO 4 , ZnO) are used to regulate the interaction between light and cellulose, aiming to modulate the sunlight scattering efficiency of cellulose-based composite cooling materials (CCAs). By rearranging the structure of cellulose composite assembly at micro/nano scale in wet ball milling process, the cellulose-photonic materials with the unique micro/nano structure are achieved. The nanoparticles can be anchored and dispersed onto the skeleton of cellulose, which can induce multiple sunlight reflection at the interface, thereby resulting in improved overall solar reflectance. The FDTD simulation demonstrated the backwards scattering is dominant in this complex system, different from pure cellulose scatters with a low refractive index. As a result, CCAs exhibited a high solar reflectance of 0.95 and high infrared emissivity of 0.94, and achieve subambient cooling of 6.6 °C during daytime under direct sunlight in summer in Nanjing. Energy simulation shows CCAs can save 57% cooling energy if it used in buildings in China. This work paves the way for developing high and stable biomass-based daytime radiative cooling materials for thermal regulation.
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JOURNAL OF MATERIALS SCIENCE
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2025
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IF 3.9
Xu Yongjian,Wei Xudong,Deng Wenhuan,Chen Hao
To address the challenge of irreversible aggregation of nanocrystalline cellulose (CNC) after dehydration and to prepare high-concentration redispersible CNC pastes, this study presents an eco-friendly strategy employing maltodextrin (MD) and sodium polyacrylate (PAAS) as synergistic dispersants. MD functions as a “hydrogen bonding inhibitor” whereas PAAS effectively stabilizes CNC suspensions through electrostatic repulsion. Redispersible CNC pastes with varying dehydration levels were successfully prepared via vacuum-assisted concentration. Systematic evaluations of MD/PAAS impacts on Re-CNC colloidal behavior—including the hydrodynamic diameter, particle size distribution, and surface charge (zeta potential) unveiled the identification of four optimal redispersion pathways. Crucially, the concentration-dehydration-rehydration cycle preserved CNC’s intrinsic properties under optimized conditions. Transmission electron microscopy (TEM) analysis confirmed the morphological integrity of CNC, while Fourier-transform infrared spectroscopy (FT-IR) and X-ray diffraction (XRD) profiles confirmed retention of chemical functionalities and crystalline structures. The engineered pastes exhibited prolonged dispersion stability (> 30 days without sedimentation). Thermal gravimetric analysis further revealed that MD-stabilized Re-CNC maintained thermal decomposition resistance equivalent to native CNC, with PAAS integration substantially elevating thermal endurance by 18–22%. Ultimately, using redispersed cellulose nanocrystals (Re-CNC) and sodium alginate (SA) as the matrix and curcumin (Cur) as the model drug, a double-network hydrogel, Cur@Re-CNC/SA, was constructed through cross-linking with calcium gluconate. Its drug release performance was comparable to that of Cur@CNC/SA prepared from pristine CNC, verifying the feasibility of the redispersion strategy. Graphical abstract
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Journal of Cleaner Production
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2025
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IF 10
Youming Zhu,Xudong Zheng,Jingbo Sun,Lin Guo,Xinmiao Pan,Xiang Gu,Xuan Ma,Jinfeng Mei,Zhongyu Li
Conventional adsorbents have the bottleneck of struggling to balance adsorption and desorption efficiencies, adsorbents with high selectivity tend to require high energy consumption for desorption and are prone to secondary pollution. The development of sustainable adsorbents with high selective adsorption performance and eco-friendly regeneration is essential. In this work, cellulose nanocrystalline imprinted aerogels (SP-IA) with smart-responsive properties were synthesized by using aminated cellulose nanocrystals as the substrate, incorporating methoxy-spiropyran as the photo-responsive monomer, and applying ion-imprinting and freeze-drying techniques. The ligand structures formed by incorporating diglycolic anhydride synergistically interacted with methoxy-spiropyran, improving the capture efficiency of SP-IA for terbium ions. Under the condition of pH 5.0, SP-IA had the optimum adsorption capacity of up to 74.10 mg g −1 . SP-IA showed excellent specific recognition of terbium ions in the complex rare earth solution with separation constant as high as 2382 mL g −1 . The green desorption of SP-IA can be realized by switching the illumination condition from UV to visible light. The desorption rate of SP-IA was over 87 %, and the decrease in adsorption capacity after five cycles was significantly smaller than that of other aerogels, maintaining approximately 86 % of initial value. The selective capture and harmless release of terbium ions from SP-IA could be realized by switching between UV and visible light, respectively. The responsive aerogel broadens the potential application of responsive adsorbents for recovery of rare earth elements from e-waste leachate.
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JOURNAL OF APPLIED POLYMER SCIENCE
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2025
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IF 2.8
Chao Ling,Kun Wang,Haoyu Lan,Lixin Huang,Bo Yang
Frequent oil spills and industrial oily wastewater discharges necessitate the development of high-performance, recyclable oil-absorbing materials, as traditional options suffer from low adsorption capacity and poor reusability. To address these limitations, this study developed crosslinked bacterial cellulose (BC) aerogels using 1,2,3,4-butanetetracarboxylic acid (BTCA) and sodium hypophosphite (SHP) as crosslinking agents. The aerogels were fabricated via freeze-drying and brief thermal esterification. By systematically optimizing BTCA content, the 10% BTCA formulation achieved a dense 3D network without crystalline precipitation, exhibiting high porosity (99.8%), minimal shrinkage (5.9%), and reduced pore size (2.2 nm). Crosslinking preserved the cellulose I structure but reduced crystallinity, as confirmed by FTIR and XRD. Thermal stability improved significantly, with residual mass at 600°C increasing from 21.8% to 39.0%. The aerogel demonstrated superior compressive resilience and structural stability in water, with oil absorption capacities of 115.4 g/g for paraffin oil, 98 g/g for engine oil, and 96 g/g for edible oil. Recyclability tests showed 84% retention after 20 ethanol cycles. This work provides a scalable, eco-friendly strategy for robust aerogels with multifunctional oil-absorption capabilities.
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ACS Applied Polymer Materials
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2025
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IF 4.7
Jinxin Xu,Ping Xu,Xikun Zhang,Yiyan Gao,Chuanji Ye,Guangyu Wang,Rongda Zhang,Guanghui Gao
The development of environmentally friendly energy storage devices with high performance has garnered significant attention; however, significant challenges persist in achieving excellent structural stability, high operating voltage, outstanding power density, and outstanding energy density. Here, cellulose was utilized to design hydrogel electrolytes for flexible supercapacitors (FSCs). A dual-network hydrogel was synthesized by interpenetrating cellulose with a poly(acrylamide-co-2-acrylamido-2-methylpropanesulfonic acid) (P(AM-co-AMPS)) network, which was cross-linked by Zn2+. The dissolution of cellulose was facilitated by Zn2+ coordination, while ZnCl2 served as both an ionic conductor and an inhibitor of water molecule electrolytic activity. The hydrogel electrolyte exhibited a significantly enhanced conductivity of 38 mS cm–1, attributed to ion migration channels formed by –SO3H from AMPS. Moreover, the maximum output voltage was increased to an unusual 2 V. Under this voltage, a high specific capacitance of 239.58 mF cm–2 at 0.5 mA cm–2 and an impressive energy density of 130.56 mW h cm–2 at a power density of 0.28 mW cm–2 were obtained. In addition to improved conductivity, AMPS also endowed the hydrogel with remarkable interfacial adhesion of 0.12 MPa to the electrode, enhancing the structural stability and energy storage efficiency of the device. This Zn2+-driven cellulose-based dual-network hydrogel offers valuable insights for the advancement of flexible hydrogel electrolytes.
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ACS Applied Nano Materials
·
2025
·
IF 5.5
Mengjue Cao,Yi Feng,Yuming Xie,Jianfeng Yao
Lithium-ion hybrid capacitors (LIHCs) have garnered significant attention in recent years because of their high energy and power density. In a proof-of-concept design, ZIF-67 nanoparticles were grown on the skeleton of carbonized bacterial cellulose (CBC) aerogel. Then, nickel cobalt layered double hydroxide (NiCo-LDH) nanosheets were formed via in situ etching-induced conversion of ZIF-67. The resulting free-standing NiCo-LDH/CBC composite not only presents a three-dimensional network to enhance the conductivity and alleviate volume variation, but is also favorable for exposing abundant active sites to increase the lithium-ion storage behavior. Consequently, the obtained free-standing NiCo-LDH/CBC aerogel displays outstanding cycling performance (673 mAh g–1 at 1 A g–1 after 1000 cycles). Furthermore, the fabricated NiCo-LDH/CBC||KCBC LIHC achieves a high energy density (88 Wh kg–1) at a high power density of 10.5 kW kg–1 and an excellent capacity retention of approximately 83% after 10,000 cycles at 2 A g–1, the performance of which makes the obtained free-standing aerogel a promising electrode for advanced wearable LIHC systems.
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MACROMOLECULAR RAPID COMMUNICATIONS
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2025
·
IF 4.3
Ruyu Bai,Haibo Jiang,Minxin Wang,Geyuan Jiang,Gaojin Lyu,Dawei Zhao
Ionogels consist of polymers and ions have emerged as promising application in flexible electronic devices. However, challenges remain in achieving the mechanical properties and low-temperature tolerance of ionogels. Here, a cellulose ionogel is reported by triggering the mechano-induced alignment of cellulose molecular chains and incorporating Ca 2+ complexation interactions. This cellulose ionogel presents outstanding mechanical properties and ionic conductivity, featuring a tensile strength of 6.84 MPa, an elastic modulus surpassing 100 MPa, and an ionic conductivity of 31.7 mS·cm −1 . Furthermore, the Ca 2+ complexation networks provide the cellulose ionogel with remarkable freezing resistance, allowing it to maintain flexibility even at temperatures as low as −196 °C, while the assembled electronic skin displays reliable sensing performance. The combination of robust mechanical strength, high ionic conductivity, biocompatibility, and extreme temperature tolerance underscores the potential applications of this cellulose ionogel, ensuring the stable operation of flexible electronic devices in highly challenging environments.
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CARBOHYDRATE POLYMERS
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2025
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IF 12.5
Jiaqi Zhou,Jingyi Li,Yu Wang,Kaiwen Liang,Jingjing Yu,Cuicui Ding,Hui Wu,Lihui Chen,Min Zhang
In abdominal wall hernia repair, current mainstream polypropylene (PP)-based patches face challenges such as chronic inflammation, mismatched degradation rates, and insufficient anti-deformation properties. While natural biomaterials offer good biocompatibility and degradability, their clinical application is limited by insufficient mechanical strength. To overcome this challenge, we engineered a chitosan (CS) and cellulose nanofiber (CNF)-reinforced collagen membrane. This design leveraged dual polysaccharide functionalities: CNF provided nanoscale reinforcement, while CS enabled multi-point cross-linking with collagen, synergistically enhancing the membrane's structural stability. To further enhance performance, a sequential approach involving the layer-by-layer blade-coating and induced assembly was employed, producing stacked and oriented lamellar structures. The optimized membrane exhibited raised tensile strength (49.00 MPa) and fracture energy (121.22 MJ/m 3 ), prolonged degradation period (52.7 % weight retention at 28 days), and reduced swelling rate (135.5 %). In vitro biocompatibility assays confirmed the material's non-cytotoxicity and excellent blood compatibility. Moreover, in vivo rat abdominal defect models demonstrated superior tissue regeneration, minimized inflammation, and effective mechanical support when using the developed membrane compared to PP meshes and pure collagen membranes (COL). These findings highlight the potential of this green strategy to provide a balanced solution for hernia repair, addressing both mechanical and biological requirements.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2025
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IF 8.5
Yupei Chai,Lidan Cao,Yingxing Zhang,Junhong Wang,Rui Wu
Cellulose-derived magnetic carbon nano-composites were successfully prepared by a calcination method using cellulose modified with dopamine and ammonium ferric citrate as raw material. The structure and physicochemical properties of the synthetic materials were characterized by various detection means. The adsorption effects of the prepared samples on the dyes methylene blue (MB) and methyl orange (MO) in simulated wastewater were also evaluated. The results reveal that the sample C-1 exhibits a high BET surface area of 218.7 m 2 /g, with impressively high adsorption efficiencies of 97.0 % for MB and 97.5 % for MO. The adsorption process follows the second-order kinetic model. Due to their strong magnetism, the prepared adsorbents can be easily recovered and reused. After four consecutive cycles of adsorption-desorption, the adsorption efficiency of sample C-1 for MB remains as high as 87.78 %, while that for MO drops to only 38.23 %. These findings indicate that this adsorption material exhibits the excellent removal effect on the cationic dye MB in water. In summary, this study offers a novel approach for the efficient utilization of cellulose-based materials. And the prepared composite material can play an important role in the remediation of water bodies contaminated by dyes.
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ACS Applied Materials & Interfaces
·
2017
·
IF 7.504
Dawei Zhao,Qi Zhang,Wenshuai Chen,Xin Yi,Shouxin Liu,Qingwen Wang,Yixing Liu,Jian Li,Xianfeng Li,Haipeng Yu
Recent improvements in flexible electronics have increased the need to develop flexible and lightweight power sources. However, current flexible electrodes are limited by low capacitance, poor mechanical properties, and lack of cycling stability. In this article, we describe an ionic liquid-processed supramolecular assembly of cellulose and 3,4-ethylenedioxythiophene for the formation of a flexible and conductive cellulose/poly(3,4-ethylenedioxythiophene) PEDOT:poly(styrene sulfonate) (PSS) composite matrix. On this base, multiwalled carbon nanotubes (MWCNTs) were incorporated into the matrix to fabricate an MWCNT-reinforced cellulose/PEDOT:PSS film (MCPP), which exhibited favorable flexibility and conductivity. The MCPP-based electrode displayed comprehensively excellent electrochemical properties, such as a low resistance of 0.45 Ω, a high specific capacitance of 485 F g–1 at 1 A g–1, and good cycling stability, with a capacity retention of 95% after 2000 cycles at 2 A g–1. An MCPP-based symmetric solid-state supercapacitor with Ni foam as the current collector and PVA/KOH gel as the electrolyte exhibited a specific capacitance of 380 F g–1 at 0.25 A g–1 and achieved a maximum energy density of 13.2 Wh kg–1 (0.25 A g–1) with a power density of 0.126 kW kg–1 or an energy density of 4.86 Wh kg–1 at 10 A g–1, corresponding to a high power density of 4.99 kW kg–1. Another kind of MCPP-based solid-state supercapacitor without the Ni foam showed excellent flexibility and a high volumetric capacitance of 50.4 F cm–3 at 0.05 A cm–3. Both the electrodes and the supercapacitors were environmentally stable and could be operated under remarkable deformation or high temperature without damage to their structural integrity or a significant decrease in capacitive performance. Overall, this work provides a strategy for the fabrication of flexible and conductive energy-storage films with ionic liquid-processed cellulose as a medium.
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