CELLULOSE
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2020
·Vol. 27
·期 13
·7475-7488
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IF 4.21
Song Quancheng,Zhan Zeying,Chen Binxia,Zhou Zehang,Lu Canhui
Polypyrrole (PPy) has received extensive attention in supercapacitor electrodes due to its promising electrochemical activity, while the poor cycling stability and densely packed structure limited its electrochemical performance. Herein, we demonstrate the fabrication of flexible and freestanding PPy@bacterial cellulose (BC)/MXene composite film with significantly enhanced electrochemical performance. PPy nanoparticles were uniformly deposited on BC nanofibers via in situ polymerization, and assembled with highly conductive MXene (Ti 3 C 2 T x ) nanoflakes through strong interfacial interactions. BC as a biological template can effectively disperse PPy nanoparticles. The intercalation of PPy@BC nanofibers into Ti 3 C 2 T x layers constructs hierarchically packed nanofibrous structure, which provides extensive accessible electrochemical active sites. Freestanding PPy@BC/Ti 3 C 2 T x (PBM) electrode exhibits superior specific capacitance (gravimetric and areal capacitance of up to 550 F g −1 and 879 mF cm −2 , respectively) and excellent capacitance retention of 83.5% after 10,000 cycles. In addition, the symmetric supercapacitor assembled by PBM papers present a high energy density of 33.1 W h kg −1 (power density of 243 W kg −1 ) and excellent capacitance retention. The elaborately designed nanostructure and PPy-Ti 3 C 2 T x hybridization make great contribution to the enhanced electrochemical performance, which provide a feasible method for the fabrication of conductive polymer-based high-performance flexible supercapacitor electrodes. Graphic abstract
研究领域:
材料科学
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能源存储
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产品关联
DOI
高影响因子
Food Packaging and Shelf Life
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2021
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IF 6.429
Yanyi Wen,Jia Liu,Lei Jiang,Zhongjie Zhu,Suirui He,Shu He,Wei Shao
An intelligent and active film was developed based on 2,2,6,6-tetramethylpiperidine-1-oxyl radical (TEMPO)-oxidized bacterial cellulose (TOBC) containing thymol (THY) and anthocyanin-rich purple potato extract (ANT). The microstructure, thermal stability, water vapor permeability, mechanical property and UV protection performance of TOBC-based films were evaluated. Scanning Electron Microscopy (SEM) and Atomic Force Microscope (AFM) results show the additions of THY and ANT bring about the uneven distribution of TOBC fibers with slightly increased surface roughness . Meanwhile, the introduction of THY and ANT could increase the thermal stability, UV protection and water vapor barrier property of TOBC with slightly decreased tensile strength . The prepared ANT exhibits a pH-sensitive activity, and it endows the fabricated TOBC/THY/ANT film with colorimetric response ability to volatile ammonia. TOBC/THY/ANT film also exhibits good antibacterial and antioxidant activities . Particular finding is that TOBC/THY/ANT film possesses simultaneously freshness real-time monitoring and good shrimp preservation abilities. The antioxidant, antibacterial and color response performances of TOBC/THY/ANT film were measured for three cycles in order to prove its recycling ability. These unique features of TOBC/THY/ANT film demonstrate the potential in commercial shrimp packaging with freshness real-time monitoring.
研究领域:
食品科学
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材料科学
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产品关联
DOI
高影响因子
CELLULOSE
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2017
·Vol. 24
·期 4
·1889-1899
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IF 3.417
Xu Qi,Wei Chengzhuo,Fan Lingling,Peng Shuo,Xu Weilin,Xu Jie
The bacterial cellulose (BC)/Al 2 O 3 nanofibrous composite membrane as a lithium-ion battery separator has been successfully prepared by coating Al 2 O 3 on the BC nanofibers through a simple in situ thermal decomposition of Al(NO 3 ) 3 · 9H 2 O. Thermal treatment tests show that the BC/Al 2 O 3 composite membrane is thermally stable at a high temperature of 200 °C while great shrinkage is observed for the commercial PP-PE-PP membrane. Moreover, the BC/Al 2 O 3 membrane is evaluated to have large porosity and excellent electrolyte uptake, consequently giving rise to larger ionic conductivity, lower interfacial resistance as well as better electrochemical stability. The half lithium-ion battery assembled with the BC/Al 2 O 3 separator demonstrates large discharge capacity and good cycling performance, suggesting that the BC/Al 2 O 3 membrane can be used as a lithium-ion battery separator.
研究领域:
材料科学
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能源科学
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产品关联
DOI
高影响因子
BIORESOURCE TECHNOLOGY
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2017
·
IF 5.651
Zheng Cheng,Rendang Yang,Xu Liu,Xiao Liu,Hua Chen
Herein, bacterial cellulose (BC) was synthesized by acetobacter xylinum via organic acid pre-hydrolysis liquor of agricultural corn stalk used as carbon source. Acetic acid was applied to pretreat the corn stalk, then, the prehydrolysate was detoxified by sequential steps of activated carbon and ion exchange resin treatment prior to use as carbon source to cultivate acetobacter xylinum. Moreover, the recovery of acetic acid was achieved for facilitating the reduction of cost. The results revealed that the combination method of detoxification treatment was very effective for synthesis of BC, yield could be up to 2.86 g/L. SEM analysis showed that the diameter size of BC between 20 and 70 mm. In summary, the process that bacterial cellulose was biosynthesized via prehydrolysate from agricultural corn stalk used as carbon source is feasible, and the ability to recover organic acid make it economical, sustainable and green, which fits well into the biorefinery concept.
研究领域:
生物技术
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环境科学
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可持续发展
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产品关联
DOI
PubMed
高影响因子
CARBOHYDRATE POLYMERS
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2013
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IF 3.479
Ziyu Qin,Li Ji,Xueqiong Yin,Li Zhu,Qiang Lin,Jinming Qin
Various sodium bacterial cellulose sulfates (SBCS) were prepared via the homogeneous sulfation of bacterial cellulose (BC) with a SO 3 /pyridine (Py) complex in a dimethyl acetamide/lithium chloride solution. The SBCSs were characterized using Fourier transform infrared spectroscopy, X-ray diffraction (XRD), carbon nuclear magnetic resonance spectroscopy, gel permeation chromatography, elemental analyses, and thermal gravimetric analyses. A variety of conditions (including various amounts of SO 3 /Py, temperatures, and reaction times) were utilized to obtain SBCSs with DS values that ranged from 0.10 to 1.50. The XRD profiles indicated that the SBCSs had a cellulose II analog polymorphous structure. The differences between BC and microcrystalline cellulose (MC) were studied in their respective reactions. BC is more reactive than MC in both the sulfation and depolymerization processes. The order of reactivity for C OH is C6 > C2 > C3 for both BC and MC. Cellulose sulfates with DS values >0.31 were soluble in deionized water.
研究领域:
生物材料学
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化学工程
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DOI
PubMed
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
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2015
·Vol. 133
·期 11
·
IF 1.768
Lian Tang,Yi Zheng,Shiyan Chen,Lei Wang,Huaping Wang
Flexible and nonpoisonous X-ray-shielding membranes supported by bacterial cellulose (BC) were prepared, in which X-ray-shielding materials were of microcapsule structure by using polyvinyl alcohol as shell and lead salt as core. The effect of the wall/core interaction and the amount of cross-linking agent were taken into consideration to find the optimal reaction conditions. The morphology, microcapsule size, and lead salt release properties were investigated. After supported by BC, the flexible and potable membranes for X-ray radiation protection were prepared and the shielding properties were evaluated, which indicated a good X-ray-shielding material. We set up a new method to prepare flexible and portable X-ray radiation protection membranes. © 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016 , 133 , 43120.
研究领域:
材料科学
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生物医学工程
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产品关联
DOI
高影响因子
CARBOHYDRATE POLYMERS
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2023
·
IF 11.2
Yongsheng Li,Chengnan Chu,Chuntao Chen,Bianjing Sun,Jingjing Wu,Shujun Wang,Weiwei Ding,Dongping Sun
Management of noncompressible torso hemorrhage is an urgent clinical requirement, desiring biomaterials with rapid hemostasis , anti-infection and excellent resilient properties. In this research, we have prepared a highly resilient cryogel with both hemostatic and antibacterial effects by chemical crosslinking and electrostatic interaction . The network structure crosslinked by quaternized chitosan and genipin was interspersed with oxidized bacterial cellulose after lyophilization. The as-prepared cryogel can quickly return to the original volume when soaking in water or blood. The appropriately sized pores in the cryogel help to absorb blood cells and further activate coagulation, while the quaternary ammonium salt groups on quaternized chitosan inhibit bacterial infections. Both cell and animal experiments showed that the cryogel was hypotoxic and could promote the regeneration of wound tissue. This research provides a new pathway for the preparation of double crosslinking cryogels and offers effective and safe biomaterials for the emergent bleeding management of incompressible wounds.
研究领域:
生物材料学
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医学工程
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创伤修复
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产品关联
DOI
PubMed
高影响因子
CELLULOSE
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2023
·Vol. 30
·期 7
·4373-4385
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IF 5.7
Zhang Tianyi,Song Baiqing,Yang Jie,Yuan Binbin,Ma Jianhua
Multifunctional films have potential applications in smart wearable devices and portable electronic products. Yet, it is always a challenge to ensure these materials simultaneously to have flexible, strong, and functional properties during the material preparation process. Herein, bacterial cellulose/polydopamine modified by MXene (BC/PM) multi-layer films is prepared by vacuum-assisted self-assembly. The micromorphology, phase composition, and application performance of this composite film were systematically characterized. The mechanical properties test indicates that the BC/PM multi-layer film exhibits an excellent reinforcement effect. The tensile strength and elongation of the three-layer BC/PM film reach 181.6 MPa and 8.9%, respectively. For multifunctional applications, the BC/PM multi-layer film shows remarkable electric heating and excellent photothermal properties, for example, it can be heated up to 85 °C at a constant voltage of 6 V for 20 s, and its temperature can increase from room temperature to 90 ℃ after 250 W infrared lamp is irradiated for 30 s. Furthermore, the sample has potential high sensitivity and high response speed to humidity changes. This research will provide a data basis and theoretical reference for the practical application of bacterial cellulose-based multifunctional films.
研究领域:
材料科学
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生物医学工程
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产品关联
DOI
高影响因子
Advanced Healthcare Materials
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2023
·
IF 10
Xueqing Zhao,Yucheng Shi,Shaofang Niu,Xiaoya Wei,Tongtong Liu,Mingbo Yang,Mengmeng Wu,Ge Gao,Ting Ma,Guoqiang Li
Bacterial cellulose is an extracellular polysaccharide produced by microorganisms, offering advantages such as high water-holding capacity, flexibility, and biocompatibility. However, its lack of bactericidal activity hampers its wide application. Usnic acid, a secondary metabolite derived from lichens of the Usnea genus, is recognized for its antibacterial and anti-biofilm efficiency, coupled with anti-inflammatory properties. Its water insolubility presents challenges for wide utilization and stable release. Sanxan gel, a novel polysaccharide, exhibits exceptional freeze-thaw stability, suspension properties, and high elasticity, rendering it effective as a suspending agent to improve the bioavailability of water-insoluble drugs. In this study, a hydrogel membrane is designed by combining bacterial cellulose and usnic acid suspended in sanxan gel through a simple in situ microorganism fermentation. The obtained membranes demonstrate excellent ability for sustained drug release, strong eradication capability against tested bacteria in both in vitro and in vivo experiments, effective inhibition of biofilm formation, and excellent hemocompatibility and cytocompatibility. Additionally, the composite membranes promote wound healing with reduced inflammation and bacterial infection in a full-thickness wound infection model in mice. This study provides innovative insights and strategies for the development of functional dressings for infected wounds in future clinical applications.
研究领域:
生物材料学
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医学
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药剂学
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产品关联
DOI
PubMed
高影响因子
MOLECULES
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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
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DOI
PubMed
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
·
微生物学
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DOI
高影响因子
Journal of Water Process Engineering
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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
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生物技术
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）