Journal of Materials Chemistry A
·
2024
·Vol. 13
·期 1
·730-742
·
IF 10.7
Chen Cheng,Rendang Yang,Yang Wang,Xiaohui Guo,Jie Sheng
Inherently insulating and thermally stable nanocellulose membranes are prone to forming a three-dimensional porous structure, which is conducive to storing large amounts of electrolyte and providing ion migration pathways. However, the infiltration of polar electrolytes can compromise the mechanical strength of the nanocellulose membrane by disrupting hydrogen bonding, leading to a suboptimal interface and cycling stability of the batteries. This study effectively improves the mechanical strength and electrochemical performance of bacterial cellulose (BC) based separators by in situ constructing a dual-network structure polymerized from poly(ethylene glycol) diacrylate (PEGDA) and acrylic acid (AA). The distinctive dual-network structure not only significantly enhances the wet strength of the BC separator but also introduces a polymer-coordination transport mechanism, building upon the original lithium-ion pore transport system. The transport of lithium ions is regulated by the ether, ester and carboxyl groups in the polymer network, so that they are uniformly deposited on the surface of the lithium metal negative electrode, and finally form an SEI layer dominated by LiF, which greatly reduces the side reactions between the electrolyte and the electrode. The assembled lithium symmetric battery exhibits stable lithium deposition/stripping behavior, and the cycle stability and rate performance are far superior to those of commercial PP separators.
研究领域:
材料科学
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电化学
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纳米技术
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产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
·
2024
·
IF 11.2
Chouxuan Wang,Zhongguo Zhao,Shengtai Zhou,Lei Wang,Xinyue Liu,Rong Xue
The full arrival of 5G and advances in electronic integration make efficient heat dissipation crucial for stable operation and longer product lifespan. In this study, a vacuum-assisted filtration process was employed to fabricate ammoniated alumina/MXene/bacterial cellulose (Al 2 O 3 -NH 2 /MXene/BC) composite films that display a unique integration of properties, encompassing ultra-high thermal conductivity ( λ ), mechanical flexibility, and high photothermal conversion performance. By leveraging the bridging effect among spherical Al 2 O 3 -NH 2 and MXene nanosheets, a densely packed “point-surface” structure was constructed in BC by using a one-step preparation process. When the mass fraction of Al 2 O 3 -NH 2 /MXene (1:3, w/w) is 40 wt%, the O-BAl 1 M 3 exhibited an in-plane λ of 20.02 W m –1 K –1 , which was 436% and 94% higher than that of pure BC and T-BAl 1 M 3 (prepared by a two-step method), respectively. Furthermore, constructing an intact thermal conductive network within BC notably promoted photothermal and photoelectric conversion performance. The maximum surface temperature and voltage of the O-BAl 1 M 3 film reached 106.9°C and 48.34 mV when a sample with an area of 1.56 cm 2 was exposed under a light intensity of 200 mW cm –2 . By applying O-BAl 1 M 3 film, the temperature inside a self-built greenhouse model reached up to 64.8°C within 1200 s under a light intensity of 100 mW cm –2 , which validated the practical application of the composite films and offered a novel approach for creating flexible films with superior photothermal conversion capability. This work provided insights into preparing functional composite films for efficient thermal management and photothermal conversion applications.
研究领域:
材料科学
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能源技术
✓ 已验证
产品关联
DOI
高影响因子
CELLULOSE
·
2014
·Vol. 21
·期 6
·4557-4567
·
IF 3.033
Feng Jin,Shi Qingshan,Li Wenru,Shu Xiulin,Chen Aimei,Xie Xiaobao,Huang Xiaomo
In order to improve the antimicrobial activity of bacterial cellulose (BC), the silver nanoparticles (Ag NPs) were in situ fabricated on the BC membranes, affording BC and Ag hybrid antimicrobial materials, BC + Ag, which possesses excellent antimicrobial performance. Typically, carboxyl groups were firstly introduced into BC by TEMPO (2,2,6,6-tetramethylpiperidine-1-oxyl radical)-mediated oxidation. Then, the carboxyl-functionalized BC was performed with ion-exchange reaction to change the sodium ions into Ag + by immersing in AgNO 3 aqueous solution, generating Ag + anchored BC. Finally, two types of distinct reductive reagents including NaBH 4 and sodium citrate were employed to transform Ag + into Ag NPs to fabricate BC + Ag. The diameters of Ag NPs were determined to be 3.8 nm for NaBH 4 -reduced BC + Ag, and 22.0 nm for sodium citrate-reduced one, respectively. The silver content of BC + Ag were determined to be 1.944 and 2.895 wt% for NaBH 4 -reduced sample and sodium citrate-reduced one, respectively. Two types of BC + Ag both showed a slow and persistent Ag + release profile, but the NaBH 4 -reduced one released much more Ag + than that of sodium citrate under the same measurement condition. In-depth antibacterial analysis via the disc diffusion and colony forming count method disclosed that BC + Ag exhibited strong bactericidal effects against both Escherichia coli and Staphylococcus aureus . And the antibacterial activity of NaBH 4 -reduced BC + Ag was higher than the sodium citrate-reduced one. Overall, this study would further improve the antibacterial efficiency of BC + Ag.
研究领域:
材料科学
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微生物学
✓ 已验证
DOI
高影响因子
MOLECULES
·
2016
·Vol. 21
·期 5
·618
·
IF 2.465
Dawei Li,Kelong Ao,Qingqing Wang,Pengfei Lv,Qufu Wei
Palladium nanoparticle-bacterial cellulose (PdBC) hybrid nanofibers were synthesized byin-situchemical reduction method. The obtained PdBC nanofibers were characterized by a series of analytical techniques. The results revealed that Pd nanoparticles were evenly dispersed on the surfaces of BC nanofibers. Then, the as-prepared PdBC nanofibers were mixed with laccase (Lac) and Nafion to obtain mixture suspension, which was further modified on electrode surface to construct novel biosensing platform. Finally, the prepared electrochemical biosensor was employed to detect dopamine. The analysis result was satisfactory, the sensor showed excellent electrocatalysis towards dopamine with high sensitivity (38.4 µA·mM−1), low detection limit (1.26 µM), and wide linear range (5–167 µM). Moreover, the biosensor also showed good repeatability, reproducibility, selectivity and stability and was successfully used in the detection of dopamine in human urine, thus providing a promising method for dopamine analysis in clinical application.Keywords:palladium nanoparticle;bacterial cellulose;laccase;dopamine;biosensor
研究领域:
材料科学
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分析化学
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生物医学工程
✓ 已验证
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2024
·
IF 7.7
Yanrong Liao,Sizhao Zhang,Shuai Yu,Kunming Lu,Mingkang Wang,Yunyun Xiao,Feng Ding
Bio-based aerogel is a functionalized nanoporous material with environmentally friendly, high surface area, ultra-low density, high porosity, and low thermal conductivity, making it suitable for various applications such as energy-saving buildings, electronic information, separation, adsorption, catalysis, biomedicine, and others. However, the current bio-based chitosan aerogel still faces great challenges in reaching multifunctional improvement to address its intrinsic shortcomings. Herein, we propose a new approach depending upon supramolecular interactions for constructing chitosan/bacterial cellulose aerogels that simultaneously possess superior moisture resistance/fatigue, anti-thermal-shock, and flame retardancy. Specifically, the aerogels demonstrate remarkable characteristics, namely high strength (self-standing itself weight beyond 10,676 times), low thermal conductivity (lowest to 22 mW m −1 K −1 under normal pressure and room temperature), and excellent fatigue resistance (almost negligible permanent deformation at 1 % strain even undergoing compressive cycles up to 10,000 times). On the other hand, the aerogels display exceptional moisture resistance with superhydrophobicity (moisture absorption rate <0.88 % for 160 h at 70 °C and 85 % relative humidity), excellent thermal shock property (withstand cold-hot shock up to 200 cycles with rapid temperature changes between −30 °C and 60 °C), and remarkable fire retardancy (swiftly self-extinguishing in 0.6 s). Additionally, the compressive stress increases to 0.223 MPa at 3 % strain after hydrophobic treatment, representing a 27 % enhancement in mechanical robustness. Further, the mechanism responsible for microstructural evolution has been also established in different strain conditions. This work may provide rich possibilities for developing multifunctional bio-based aerogel for energy-saving buildings.
研究领域:
材料科学
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生物工程
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环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
DESALINATION
·
2025
·
IF 9.8
Yi Lu,Xiang Wang,Xiaofeng Xu,Pan Wu,Zongze Li,Guangyao Zhang
The increasing global demand for freshwater and clean energy necessitates innovative solutions that address both resource scarcity and environmental challenges. Herein, we present a 2D sandwich-like hybrid membrane, composed of bacterial cellulose (BC) and calcined CoAl-LDH nanosheets (CAL-T), fabricated via a layer-by-layer deposition strategy. This multifunctional membrane synergistically integrates photothermal evaporation and photocatalytic CO 2 reduction, leveraging the porous structure and narrow bandgap (1.37 eV) of CAL-T to enhance solar absorption and energy conversion. Furthermore, the BC matrix facilitates efficient water transport and mechanical stability, ensuring long-term operational performance. Under 1 kW ∙ m −2 solar irradiance, the BC/CAL-650 membrane achieves a water evaporation rate of 1.36 kg ∙ m −2 ∙ h −1 , surpassing most reported 2D evaporators, and a CO evolution rate of 8.78 μmol ∙ g −1 ∙ h −1 , significantly outperforming conventional photocatalysts. Furthermore, the BC matrix facilitates efficient water transport and mechanical robustness, ensuring long-term operational performance. These dual-functional capabilities, coupled with low-cost fabrication (~$0.0041 per membrane), demonstrate the membrane's superiority and practical potential in integrated solar-driven water purification and solar-to-fuel conversion. This work establishes a versatile platform for advancing next-generation hybrid materials to mitigate water scarcity and climate change challenges.
研究领域:
材料科学
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环境科学
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能源科学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry A
·
2025
·
IF 9.5
Liu Dan Yu,Pan Xue,Zhang Jingli,Tong Yinjia,Zhang Yixuan,Yu Yanjing,Zhang Qingda,Huang Mengfei,Yiheng Gao,Jie Li,Qufu Wei,Pengfei Lv
The rapid development of intelligent wearable devices and health monitoring equipment demands bio-based materials that integrate multiple functions with enhanced durability. Herein, this work is an first attempt to develop flexible electromagnetic shielding and stress-strain sensing based on a composite of polydopamine (PDA) modified-MXene (p-MXene) film with waterborne polyurethane (WPU)/bacterial cellulose (BC) film. The durable p-MXene@WPU/BC composite films are found to demonstrate excellent mechanical properties (370 MPa) and stable interfacial adhesion, attributing to the interlocking network structure between WPU and WBC and the strong hydrogen bonding between p-MXene layer and WPU/BC layer. The resultant composite film displays remarkable mechanosensing performance, facilitating the accurate and reliable detection of human physiological signals. Importantly, the prepared composite film could effectively reflect and absorb electromagnetic waves through the high conductivity of p-MXene layer and the staggered nanonetwork structure of WPU/BC layer, thus achieving a shielding effect of up to 72 dB. As proof-of-concept illustrations, it is noteworthy that the electromagnetic shielding efficacy displays a dynamic interaction with the strain sensing performance during the stretching process, which is primarily attributed to the moderating effect of the efficient attachment and parallel-aligned structure of p-MXene nanosheets. The research herein can offer new perspectives on the development of advanced bio-based multiple functions materials and dynamic perceptual interaction and smart wearables.
研究领域:
材料科学
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生物医学工程
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2024
·
IF 7.7
Shuaitian Jia,Zan Chen,Yinhui Li,Claudia Li,Cuijia Duan,Kang Hui Lim,Sibudjing Kawi
The disposal of waste lithium batteries , especially waste separators, has always been a problem, incineration and burial will cause environmental pollution, therefore, the development of degradable and high-performance separators has become an important challenge. Herein, UiO-66-NH 2 particles were successfully anchored onto bacterial cellulose (BC) separators by epichlorohydrin (ECH) as a crosslinker, then a BC/UiO-66-NH 2 composite separator was prepared by vacuum filtration. The ammonia groups (−NH 2 ) from UiO-66-NH 2 can form hydrogen bonds with PF 6 − in the electrolyte, promoting lithium-ion transference. Additionally, UiO-66-NH 2 can store the electrolyte and tune the porosity of the separator. The lithium ion migration number (0.62) of the battery assembled with BC/UiO-66-NH 2 composite separator increased by 50 % compared to the battery assembled with commercial PP separator (0.45). The discharge specific capacity of the battery assembled with BC/UIO-66-NH 2 composite separator after 50 charge and discharge cycles is 145.4 mAh/g, which is higher than the average discharge specific capacity of 114.3 mAh/g of the battery assembled with PP separator. When the current density is 2C, the minimum discharge capacity of the battery assembled with BC/UiO-66-NH 2 composite separator is 85.3 mAh/g. The electrochemical performance of the BC/UiO-66-NH 2 composite separator is significantly better than that of the commercial PP separator. In addition, -NH 2 can offer a nitrogen source to facilitate degradation of the BC separators, whereby the BC/UiO-66-NH 2 composite separator could be completely degraded in 15 days.
研究领域:
材料科学
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环境科学
·
能源科学
✓ 已验证
DOI
PubMed
高影响因子
Journal of Water Process Engineering
·
2022
·
IF 7.34
Xudong Zheng,Shangxiong Wang,Ang Li,Tongtong Xu,Jinfeng Mei,Zhongyu Li
Selective recovery of high value rare earth elements from tailings wastewater is an economical and environmental measure. In this study, we constructed highly elastic embossed bacterial cellulose aerogel (BCP-I) for highly selective adsorption of erbium ions using bio-based material (2,2,6,6-tetramethyl-1-piperidinyloxy-mediated bacterial cellulose) as a substrate material in concert with chitosan (CS) and polyethyleneimine (PEI). CS and PEI contain abundant functional monomers , which can cooperate with bacterial cellulose and Er(III) to construct more imprinting sites, which not only improves adsorption performance of BCP-I, but also makes aerogel more stable. In order to analyze physical and chemical properties of aerogels, it was characterized by scanning electron microscope , Fourier transform infrared spectrometer and thermogravimetric analysis . Adsorption experiments showed that BCP-I had a good adsorption effect on Er(III), and the maximum adsorption capacity could reach 95.99 mg g −1 . After five adsorption cycles, cycling experiments showed that adsorption performance of BCP-I was still in good condition. In conclusion, BCP-I is a good choice for the recovery of Er(III) because of its environmental friendliness, high selectivity and good reproducibility.
研究领域:
环境科学
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材料科学
·
生物技术
✓ 已验证
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2020
·
IF 5.162
Shumin Zhang,Lin Li,Xuehong Ren,Tung-Shi Huang
Bacterial cellulose (BC) is a natural polymer with remarkable superiority for fabricating biomaterials. In this study, a multiporous bacterial cellulose (MBC) film was modified with N-isopropylacrylamide (NIPAM), and the modified MBC film was imbued with antibacterial properties after chlorination. The dried chlorinated samples showed superb antibacterial efficacy and could inactivate 6.19 log of inoculated S. aureus and 6.29 log of E. coli within 1 min of contact. After releasing active chlorine for 12 h, 3.67 log of S. aureus and 3.97 log of E. coli were inactivated within 30 min of contact. The prepared films displayed high porous and layered structures with a resultant excellent water retention which can be applied as material for wound dressings. In addition, the chlorinated films showed hemostatic ability on wound bleeding and good biocompatibility. The prepared N-halamine functionalized MBC films might have great potential applications as wound dressings.
研究领域:
生物材料学
·
医学工程
·
微生物学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CELLULOSE
·
2021
·Vol. 28
·期 9
·5241-5256
·
IF 5.044
Zhou Qian,Chen JunJie,Jin Bo,Chu Shijin,Peng Rufang
MOFs are confined to solid supports to overcome their inherent disadvantages of lightweight and submicron size, which pose challenges to the adsorption operation. ZIF-8 nanoparticles can be loaded onto bacterial cellulose (BC) in a simple manner, and subsequently carbonized at 700 °C to obtain a larger specific surface area (expressed as BC@ZIF-8 carbon aerogels (BZCA). SEM indicates that ZIF-8 was successfully self-assembled on bacterial cellulose. Various characterization techniques (SEM, TEM, FT-IR, XRD, BET, and XPS) indicated that BZCA had been successfully prepared, with a large specific surface area (220.45 m 2 /g) and sufficient functional groups (-NH-, -OH, Zn–O, N–O, and C = N-). The relationship of the adsorption of BZCA to UO 2 2+ with both contact time and initial concentration was then studied. Results showed that the adsorption of UO 2 2+ followed a pseudo-second-order kinetic model (R 2 = 0.999). After calculation, the maximum adsorption capacity of BZCA was 535 mg/g, which was comparable to or better than that of other adsorbents. The kinetic analysis disclosed that 70 min was enough for BZCA to reach the adsorption equilibrium. The adsorption mechanism of the prepared adsorbent on UO 2 2+ was studied by FTIR and XPS.
研究领域:
材料科学
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
CARBOHYDRATE POLYMERS
·
2020
·
IF 7.182
Feng-ping Wang,Xiang-jun Zhao,Fazli Wahid,Xue-qing Zhao,Xiao-tong Qin,He Bai,Yan-yan Xie,Cheng Zhong,Shi-ru Jia
Bacterial cellulose (BC) is a substrate material with high purity and robust mechanical strength, but due to its small pore size and relatively expensive price, it is restricted as an oil-/water separation membrane. In this study, cheaper plant cellulose needle-leaf bleached kraft pulp (NBKP) was added to BC to increase the pore size of the composite membrane, and a superhydrophobic/superoleophilic membrane was prepared for oil-/water separation. The modified membrane surface displayed a petal-like micro-structure and a water contact angle (WCA) of 162.3°, while the oil contact angle was decreased to 0°. What’s more, the membrane exhibited excellent oil-/water separation under gravity, recyclability, and a separation efficiency (>95 %), and it was both pH and salt resistant. The membrane also remained durably hydrophobic after 10 separation cycles. And the separation methodology is expected to be highly energy-efficient.
研究领域:
材料科学
·
环境科学
·
生物工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）