INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2024
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IF 7.7
Yuhang Yang,Xinwang Cao,Jinyou Lin
Air pollution such as particulate matter is always a serious threat to public health, thus many disposable and degradable air filters were designed to deal with this severe challenge avoiding the secondary pollution after discarding. Herein, inspired by the natural spider web structure, a hierarchical porous composite fibrous membrane containing web-like cellulose nanofibrils (CNF) was developed. The implanted porous CNF membranes with web-like among the inter-fiber voids of electrospun poly(ethylene- co -viny alcohol) fibrous membrane were realized via a layer-by-layer (LBL) method followed by an elevated-temperature drying, which exhibit a smaller diameter with one or two orders of magnitude reduction comparing with the substrate fibers. The morphology of implanted CNF membranes can be regulated by changing the CNF dispersion concentration, PH, solution composition as well as the LBL times. The addition of a small amount of isopropyl alcohol to the CNF solution can efficiently facilitate the implantation of web-like CNF on substrate, resulting in both improvements on the mechanical properties and filtration capacity. The result shows that the implanted web-like CNF of as-prepared composite membrane can enhance the PM 0.3 capture ability (reaching 96.8 %) while not surge its pressure drop (225.7 Pa) exceeding N95 standard. This work presents a new design and fabrication of CNF-based filter materials directly without using freeze drying, which can not only provide a fully or partially biodegradable air filter but also give encouragement to explore new filters efficiently.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2024
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IF 7.7
Qiyue Zhao,Hong-Man Hou,Gong-Liang Zhang,Hongshun Hao,Bei-wei Zhu,Jingran Bi
Heterocyclic aromatic amines (HAAs) are the main carcinogens produced during thermal processing of protein-rich foods. In this paper, a composite aerogel (TOCNF Ca ) with a stabilized dual-network structure was prepared via a template for the in-situ synthesis of UiO-66 on cellulose for the adsorption of HAAs in food. The dual-network structure of TOCNF Ca provides the composite aerogel with excellent wet strength , maintaining excellent compressive properties. With the in-situ grown UiO-66 content up to 71.89 wt%, the hierarchical porosity endowed TOCNF Ca @UiO-66 with the ability to rapidly adsorb HAAs molecules with high capacity (1.44–5.82 μmol/g). Based on excellent thermal stability , adsorption capacity and anti-interference, TOCNF Ca @UiO-66 achieved satisfactory recoveries of HAAs in the boiled marinade, which is faster and more economical than the conventional SPE method. Moreover, TOCNF Ca @UiO-66 could maintain 84.55 % of the initial adsorption capacity after 5 times of reuse.
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APPLIED ORGANOMETALLIC CHEMISTRY
·
2024
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IF 3.7
Lifei Liu,Xiaoqing Yang,Pengfei Li,Luyuan Zhang,Yali Luo,Meng Yan,Yang Deng,Xia An,Jianling Zhang,Xu Wu
The construction of metal–organic frameworks (MOFs) with desirable structures for high-performance photocatalysis is attractive but remains challenging. Here, a hierarchically meso- and microporous sc Cu-MOF-74 was synthesized in supercritical CO 2 ( sc CO 2 )/methanol solution. Compared with the conventional microporous Cu-MOF-74, the meso- and microporous sc Cu-MOF-74 has more exposed and accessible Lewis acid sites derived from the missing-linker defects. The unique structure endows sc Cu-MOF-74 with superior molecular accessibility, enhanced separation, and transfer efficiency of photogenerated charges. High catalytic activity and reusability can be achieved in photo-oxidative coupling of amines, reaching a maximum N-benzylbenzaldimine yield rate of 4.80 mmol g −1 h −1 under mild conditions, that is, air atmosphere and room temperature. This study provides a new idea for improving the intrinsic photocatalytic activities of MOFs.
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ACS Applied Materials & Interfaces
·
2025
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IF 8.2
Peng Liu,Linqing Du,Fang Luan,Chuanwei Shi,Yeping Liu,Zhexu Gai,Fei Yang,Yanzhao Yang
The adsorption of DNA probes onto nanomaterials represents a promising bioassay technique, generally employing fluorescence or catalytic activity to generate signals. A significant challenge is maintaining the catalytic activity of chromogenic catalysts during detection while enhancing accuracy by overcoming the limitations of single-signal transmission. This article presents an innovative multimodal analysis approach that synergistically combines the oxidase-like activity of Fe–N–C nanozyme (Fe–NC) with red fluorescent carbon quantum dots (R–CQDs), further advancing the dual-mode analysis method utilizing R-CQDs@Fe–NC. In this system, R-CQDs integrate with Fe–NC to provide a steady reference red fluorescence signal, while Fe–NC serves as the catalytic active site. The adsorption of 6-carboxyfluorescein-labeled aptamers (FAM-apt) significantly enhanced the electron transfer capability of R-CQDs@Fe–NC, enhancing its catalytic performance and resulting in increased oxidation of 3,3′,5,5′-tetramethylbenzidine (TMB). Concurrently, the green fluorescence of FAM-apt diminishes due to energy competition, photoinduced electron transfer, and the internal filtration effect by R-CQDs@Fe–NC, while the red fluorescence from R-CQDs@Fe–NC remains stable. Upon recognizing and binding to prostate-specific antigen (PSA), FAM-apt detaches from the surface of R-CQDs@Fe–NC. This leads to simultaneous variations in both the fluorescence signal of the system and the colorimetric signal of TMB. Based on these properties, a colorimetric/fluorescence dual-mode detection method for PSA was established, with detection limits of 0.054 and 0.16 ng/mL, respectively. Furthermore, a smartphone-based sensing device facilitated rapid and convenient detection. This study presents a multisignal output sensing strategy and a simple capillary sensing device, presenting a promising approach for PSA diagnostic analysis and the potential detection of other biomarkers.
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CELLULOSE
·
2025
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IF 4.8
Wu Zhongbo,Shi Zhuqun,Xiong Chuanxi,Yang Quanling
The limited energy storage density which is ascribed to low dielectric constant impedes the more diversified applications of polymer dielectric capacitors, and the environmental pollution problem caused by petroleum-based polymers cannot be ignored. Cellulose has the characteristics of wide source, low cost, and strong polarization generated by the hydroxy groups on the molecular chain giving it a high dielectric constant. In addition, nanocellulose has excellent mechanical properties that enable it to be fabricated into homogeneous films with high tensile strength. In this work, barium titanate nanoparticles (BTNPs) were incorporated into nanocellulose films to obtain enhanced dielectric performance. The composite film has the best comprehensive performance with BTNP content of 0.9 wt.%, resulting in a discharge energy density of 5.21 J cm −3 and charge/discharge efficiency of 77.7% at 350 MV m −1 . Consequently, nanocellulose-based dielectric materials give great promise for applications in biopolymer-based dielectric capacitors. Graphical abstract
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CARBOHYDRATE POLYMERS
·
2024
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IF 10.7
Chenyu Sang,Shaowei Wang,Xiaoyue Jin,Xiaoyu Cheng,Huining Xiao,Yiying Yue,Jingquan Han
The rapid development of hydrogels has garnered significant attention in health monitoring and human motion sensing. However, the synthesis of multifunctional conductive hydrogels with excellent strain/pressure sensing and photoresponsiveness remains a challenge. Herein, the conductive hydrogels (BPTP) with excellent mechanical properties, fatigue resistance and photoresponsive behavior composed of polyacrylamide (PAM) matrix, 2,2,6,6-tetramethylpiperidin-1-yloxy-oxidized cellulose nanofibers (TOCNs) reinforcement and polydopamine-modified black phosphorus (BP@PDA) photosensitizer are prepared through a facile free-radical polymerization approach. The PDA adhered to the BP surface by π-π stacking promotes the optical properties of BP while also preventing BP oxidation from water. Through hydrogen bonding interactions, TOCNs improve the homogeneous dispersion of BP@PDA nanosheets and the mechanical toughness of BPTP. Benefiting from the synergistic effect of PDA and TOCNs, the conductive BPTP integrates superior mechanical performances, excellent photoelectric response and photothermal conversion capability. The BPTP-based sensor with high cycling stability demonstrates superior strain sensitivity ( GF = 6.0) and pressure sensing capability ( S = 0.13 kPa −1 ) to monitor various human activities. Therefore, this work delivers an alternative construction strategy for generating high-performance conductive hydrogels as multifunctional wearable sensors.
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CARBOHYDRATE POLYMERS
·
2024
·
IF 10.7
Yuanyuan Ma,Ya Lu,Yiying Yue,Shuijian He,Shaohua Jiang,Changtong Mei,Xinwu Xu,Qinglin Wu,Huining Xiao,Jingquan Han
Inspired by creatures, abundant stimulus-responsive hydrogel actuators with diverse functionalities have been manufactured for applications in soft robotics. However, constructing a shape memory and self-sensing bilayer hydrogel actuator with high mechanical strength and strong interfacial bonding still remains a challenge. Herein, a novel bilayer hydrogel with a stimulus-responsive TEMPO-oxidized cellulose nanofibers/poly(N-isopropylacrylamide) (TOCN/PNIPAM) layer and a non-responsive TOCN/polyacrylamide (TOCN/PAM) layer is proposed as a thermosensitive actuator. TOCNs as a nano-reinforced phase provide a high mechanical strength and endow the hydrogel actuator with a strong interfacial bonding. Due to the incorporation of TOCNs, the TOCN/PNIPAM hydrogel exhibits a high compressive strength (~89.2 kPa), elongation at break (~170.7 %) and tensile strength (~24.0 kPa). The prepared PNIPAM/TOCN/PAM hydrogel actuator performs the roles of an encapsulation, jack, temperature-controlled fluid valve and temperature-control manipulator. The incorporation of Fe 3+ further endows the bilayer hydrogel actuator with a synergistic performance of shape memory and temperature-driven, which can be used as a temperature-responsive switch to detect ambient temperature. The PNIPAM/TOCN/PAM-Fe 3+ conductive hydrogel can be assembled into a flexible sensor and generate sensing signals when driven by temperature changes to achieve real-time feedback. This research may lead to new insights into the design and manufacturing of intelligent flexible soft robots.
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Batteries-Basel
·
2025
·Vol. 11
·期 1
·18
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IF 4.8
Zhiyuan Xiao,Ruiping Zhang,Mengyue Lu,Qiang Ma,Zhuo Li,Huaneng Su,Huanhuan Li,Qian Xu
A comprehensive, three-dimensional, macro-scale model was developed to simulate non-aqueous deep eutectic solvent (DES) electrolyte flow batteries. The model’s feasibility was validated by comparing the simulated polarization data with the experimental results. Utilizing this model, the work reported here compared the flow characteristics and electrochemical properties of electrolytes with different redox couples within the porous electrodes of the batteries. Despite variations in the active materials, the distribution of the electrolyte flow rate showed uniformity due to consistent electrode and flow channel designs, indicating that the structural design of electrodes and channels has a more significant impact on electrolyte flow than the physicochemical properties of the electrolytes themselves. This study also highlighted that TEMPO and Quinoxaline DES electrolytes exhibited less flow resistance and more uniform concentration distributions, which helped reduce overpotentials and enhance battery energy efficiency. Furthermore, this research identified that the highest average overpotentials occurred near the membrane for all the redox couples, demonstrating that electrochemical reactions in DES electrolyte flow batteries primarily occur in the region close to the membrane. This finding underscores the importance of optimizing active redox ions transport in electrolytes to enhance electrochemical reactions in the proximal membrane region, which is crucial for improving flow battery performance.
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Food Bioscience
·
2025
·
IF 5.9
Kexin Huang,Kuiyou Wang,Shida Wu,Xueqian Li,Xinghua Gao,Yun Xiong,Fengyu Bai,Xunyu Song,Mingqian Tan,Wentao Su
Fucoxanthin (FX) has very interesting biological activities, but its low water solubility, stability, and bioavailability limit its applications. This study developed the one-step manufacturing strategy for FX delivery system based on 2, 2, 6, 6-Tetramethylpiperidine-1-oxyl (TEMPO)-oxidized kelp nanocellulose (TKNC), which significantly improved the environmental stability of the hydrophobic substance FX, as well as its intestinal retention ability and bioavailability. TKNC was successfully prepared by TEMPO oxidation and showed good water dispersibility, high specific surface area, and high FX loading capacity. Compared with free FX, this delivery system significantly improved the stability of FX under ultraviolet irradiation, high temperature, and gastrointestinal digestion conditions. In vitro cell experiments demonstrated that this system can significantly reduce the level of reactive oxygen species induced by lipopolysaccharides, and significantly inhibit the release of pro-inflammatory factors, showing its excellent anti-inflammatory ability. In vivo biodistribution experiments further presented that TKNC prolonged the residence time of the Nile Red in the intestine and enhanced its ability to penetrate the intestinal barrier, ultimately significantly increasing the enrichment in the liver of mice. These findings provide a new strategy for improving the stability and bioavailability of hydrophobic active substances.
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Materials Today Chemistry
·
2024
·
IF 6.7
Jianghua Huang,Jiafeng Wei,Fengyuan Tian,Fukun Bi,Renzhi Rao,Yuxin Wang,Hengcong Tao,Ning Liu,Xiaodong Zhang
Volatile organic compounds (VOCs) posed a significant threat to the sustainability of ecosystems and human health, and photocatalytic oxidation technology emerged as one of the promising strategies. In this work, N-doped TiO 2 composites were prepared by ball milling utilized melamine as a precursor for the photodegradation of high-concentration ethyl acetate under visible light. The electric field polarization effect of TiO 2 facilitated the exposure of active sites, promoting separation and migration of photogenerated carriers. DFT calculations further demonstrated that N–TiO 2 possessed better electron transition capabilities and stronger pollutant adsorption abilities. Notably, the optimized N–TiO 2 (9-N-P25) exhibited an ethyl acetate removal rate of up to 98.8 % (2000 ppm) under visible light irradiation, and the speed constant k values (0.09488 min −1 ) was 2.66 folds higher than that of pure TiO 2 (0.03571 min −1 ). The ·O 2 − and ·OH free radicals played major roles in the photodegradation process, and the interaction mechanism between free radicals and pollutant molecules was analyzed through in-situ infrared. Additionally, the mechanism of photocatalytic degradation of ethyl acetate by N–TiO 2 was further elucidated. This work provided new insights into the semiconductor photodegradation of high-concentration VOCs, offering novel pathways for removing VOCs in the atmospheric environment.
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Nano-Micro Letters
·
2025
·Vol. 17
·期 1
·1-17
·
IF 36.3
Han Xuewen,Hao Cheng,Peng Yukang,Yu Han,Zhang Tao,Zhang Haonan,Chen Kaiwen,Chen Heyu,Wang Zhenxing,Yan Ning,Pu Junwen
A mild 2,2,6,6-tetramethylpiperidine-1-oxide mediated modification system was applied to improve the reactivity and introduce porous structure of cellulose fiber skeleton.
Composite exhibited highly efficient electromagnetic shielding interference performance (> 99.99%) over multi-band.
Integrating energy storage, electromagnetic interference shielding, and structural design into bio-based materials.
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Advanced Science
·
2025
·
IF 14.1
Siying Tao,Yingming Yang,Chenzhou Wu,Jiaojiao Yang,Ziyou Wang,Fangjie Zhou,Kunneng Liang,Yi Deng,Jianshu Li,Jiyao Li
Chronic infectious bone destruction diseases, such as periodontitis, pose a significant global health challenge. Repairing the bone loss caused by these chronic infections remains challenging. In addition to pathogen removal, regulating host immunity is imperative. The retention of neutrophil extracellular traps (NETs) in chronic infectious niches is found to be a barrier to inflammation resolution. However, whether ruining the existing NETs within the local infectious bone lesions can contribute to inflammation resolve and bone repair remains understudied. Herein, a nanocapsuled delivery system that scavenges NETs dual-responsively to near-infrared light as a switch and to NETs themselves as a microenvironment sensor is designed. Besides, the photothermal and photodynamic effects endow the nanocapsules with antibacterial properties. Together with the ability to clear NETs, these features facilitate the restoration of the normal host response. The immunocorrective properties and inherent pro-osteogenic effects finally promote local bone repair. Together, the NET scavenging nanocapsules address the challenge of impaired bone repair in chronic infections due to biased host response caused by excessive NETs. This study provides new concepts and strategies for repairing bone destruction attributable to chronic infections via correcting biased host responses in chronic infectious diseases.
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