CARBON
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2024
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IF 10.5
Longsen Wang,Guanghao Li,Chen Chen,Haonan Zhang,Lin Fang,Zixun Wang,Xinbo Tu,Zhongzhu Wang,Peihong Wang,Wen He
Portable and wearable electronics demand flexible, multifunctional films with electromagnetic interference (EMI) shielding and thtaermal management capabilities. However, the preparation of flexible films with suitable performance is still a challenge. Here, we constructed the flexible, stretchable, and multifunctional patch with a multistage structure composed of Fe 3 C–C (FC) fibrous film, MXene , and polystyrene-polyisoprene-polystyrene (SIS), which exhibited outstanding EMI shielding effectiveness total (SE T ) of 56 dB. Due to the package of the SIS layer, the EMI SE of the as-prepared patch remains almost unchanged after 3000 cycles of bending test or placing in the air for one month. Furthermore, the multistage structure film shows excellent Joule heating performance and can maintained for a long time. This work provides a simple and effective strategy for the preparation of multifunctional flexible patches, which have great application potential in the fields of EMI shielding and thermal management.
研究领域:
材料科学
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电子工程
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
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IF 13.2
Wanlu Hua,Yifei Pu,Jie Xu,Baichuan Zhuang,Jing Zhang,Jifei Zhuo,Xiaoli Xie,Xin Tian,Xiangnan Chen,Tengfei Qu,Guo Li,Guangjun Gou
Heterointerface engineering has been widely proven effective for designing composite materials with high-efficiency microwave absorption (MA) capabilities. However, challenges persist in regulating the interface structures of MA materials at the microscale and nanoscale. In this study, a novel N/S-codoped multi-interfacial porous carbon composite (Fe 7 S 8 /Fe 2 S/Fe 3 C@C) is successfully prepared by chemical foaming and vulcanization. Concretely, when the carbonization and vulcanization temperature were both 600 °C, the mass ratio of carbonized sample to sulfur (carbon: sulfur) was 1:2 (PF-2), which exhibited exceptional electromagnetic wave attenuation properties. Notably, the composite achieved a minimum reflection loss ( RL min ) of −48.83 dB at 1.85 mm thickness, and an effective absorption bandwidth (EAB) value reaching 6 GHz (12–18 GHz) at 2 mm, while the proportion of paraffin wax was only 20 wt%. The significantly improved MA performance primarily originated from the synergistic effects between dielectric/magnetic heterostructures and heterointerfaces. In addition, PF-2 exhibits excellent antibacterial properties, with antibacterial rates against Escherichia coli and Staphylococcus aureus both exceeding 99.999 % under no light and 808 nm light conditions. Overall, this research provides a pathway through heterointerface engineering for designing a new generation of multifunctional electromagnetic wave absorbing materials.
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高影响因子
Small
·
2025
·
IF 12.1
Wenli Lei,Shuang Zhang,Jiaxi Shu,Fudong Li,Zixuan Deng,Juejing Liu,Xiaofeng Guo,Yuanmeng Zhao,Changsheng Shan
Self-powered biosensors (SPBs) based on biofuel cells (BFCs) use electrical output as a sensing signal without the need of external power supplies, providing a feasible approach to constructing miniaturized implantable or portable devices. In this work, a novel nanozyme of gold nanoclusters/palladium nanocubes (AuNCs/PdNCs) heterostructure is successfully fabricated to develop an innovatively self-powered and non-enzymatic glucose sensing system. The AuNCs/PdNCs with glucose oxidase (GOD)-like activity exhibits superior electrocatalytic and non-enzymatic sensing performance toward glucose. The non-enzymatic BFCs-based SPBs system, established on the AuNCs/PdNCs (anodic catalyst) and single atomic Fe sites coupled with carbon-encapsulated Fe 3 C crystals (Fe 3 C@C-Fe SACs as a cathodic catalyst) platform, exhibits an exceptional sensitivity to glucose with 0.151 µW cm −2 m m −1 (3.4 times higher than the PdNCs), outstanding selectivity and robust stability. The outstanding performance of the BFCs-based SPBs system can be attributed to the synergistic cooperation between the PdNCs and AuNCs.
研究领域:
生物医学工程
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纳米技术
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电化学传感器
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DOI
PubMed
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2026
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IF 5.4
Qing Jin,Kai Ma,Guilong Gao,Xinyu Zhou,Lijie Xu,Ying Zhang,Jiangtao Shi,Lu Gan
In this study, a series of carbon nanofiber (CNF) based one-dimensional catalysts were prepared by pyrolyzing MIL-88B(Fe) anchored PAN/lignin electrospun nanofibers, which were then employed to activate peroxymonosulfate (PMS) for bisphenol A (BPA) degradation. The results indicated that adjusting the lignin content in nanofiber precursor could engineer the crystalline phase of iron compounds in the catalysts, as well as their catalytic activity and stability. Specifically, the precursor with lower lignin content was converted into Fe 3 O 4 loaded CNF (P2L1-Fe-C), whereas Fe 3 C loaded CNF was obtained (P1L1-Fe-C) by increasing lignin content to 50 wt% in the nanofiber precursor. Having multiple Fe valence states within Fe 3 C which facilitated internal electron transfer, P1L1-Fe-C exhibited high catalytic activity with high stability and low iron ion leaching when activating PMS for BPA degradation. P1L1-Fe-C/PMS system could produce more kinds of active species including hydroxyl radical (•OH) and multiple non-radical species like singlet oxygen ( 1 O 2 ), high-valent iron-oxo species, and electron transfer process. Comparatively, P2L1-Fe-C/PMS system was only able to produce •OH and 1 O 2 . The existence of more BPA degradation pathways resulted in enhanced resistance of P1L1-Fe-C/PMS system towards various environmental interferences. This study inspires a new thinking of developing iron based Fenton-like catalyst with tunable crystalline phases through precursor recipe regulation, achieving both high activity and stability. Download: Download high-res image (225KB) Download: Download full-size image
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高影响因子
危险品化学品经营许可证（带存储）