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学者姓名：邵尊桂
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Abstract ：
Functionalization and lightweighting of high-performance air filters can markedly improve quality of life. However, achieving this goal with green processes and fully bio-based materials remains challenging, placing significant strain on the environment and energy resources. The key lies in mastering the appropriate material matching strategy and its mechanism for the forming of membrane structure. Here, ethyl cellulose (EC)/tea polyphenol (TP)/betaine (BT) bimodal nanofibrous membranes were fabricated by blended electrospinning using green solvents. The synergistic interaction between TP and BT termed the "small molecule mutual support mechanism", is particularly compelling. TP could prevent polymer chains from being difficult to deform because of BT, making it good spinnable even under high BT loading. In this case, the cations of BT were sufficient to cause jet splitting, forming a bimodal structure. Consequently, high-performance antibacterial air filtration had been achieved under ultra-light and ultra-thin conditions (15% and 8% of N95 masks, respectively). The filtration efficiency for 0.3 mu m NaCl particles, pressure drop, and quality factor were 99.79%, 58.7 Pa, and 0.1050 Pa-1, respectively. The antibacterial rates for Escherichia coli and Staphylococcus aureus were all 99.99%. This study offers insights into the green and sustainable design of advanced protective equipment.
Keyword ：
Air filtration Air filtration Bimodal nanofibers Bimodal nanofibers Green electrospinning Green electrospinning High performance High performance Light weight Light weight
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| GB/T 7714 | Zheng, Gaofeng , Gui, Zeqian , Wang, Qibin et al. Green electrospinning fully bio-based lightweight nanofibrous membrane for high-performance and antibacterial air filtration via small molecule mutual support mechanism [J]. | JOURNAL OF CLEANER PRODUCTION , 2025 , 486 . |
| MLA | Zheng, Gaofeng et al. "Green electrospinning fully bio-based lightweight nanofibrous membrane for high-performance and antibacterial air filtration via small molecule mutual support mechanism" . | JOURNAL OF CLEANER PRODUCTION 486 (2025) . |
| APA | Zheng, Gaofeng , Gui, Zeqian , Wang, Qibin , Chen, Ruixin , Shen, Ruimin , Guo, Shumin et al. Green electrospinning fully bio-based lightweight nanofibrous membrane for high-performance and antibacterial air filtration via small molecule mutual support mechanism . | JOURNAL OF CLEANER PRODUCTION , 2025 , 486 . |
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Stable high-density multi-jet electrospinning is crucial for nanofiber production. However, inherent electric field superposition effects in multi-needle configurations cause non-uniform field distributions near needle tips, significantly compromising fiber uniformity and production efficiency. To overcome the limitations of singleparameter optimization, this study proposes a coupled geometric optimization strategy for needle configuration. Based on electric field simulations, a novel symmetric stepped multi-needle array was developed. Experimental validation confirmed this structure achieves a uniform electric field distribution. Fibers diameter produced using the optimized structure exhibited a coefficient of variance (CV) of 6.7 % and fiber diameter is 152 +/- 28.9 nm-significantly lower than those from unoptimized spinnerets (10.4 % and 178 +/- 40.4 nm), respectively, These results verify the superiority of the optimized array in improving both electric field uniformity and nanofiber quality.
Keyword ：
Batch production Batch production Electric field simulation Electric field simulation Electrospinning Electrospinning Structural optimization Structural optimization
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| GB/T 7714 | Zhang, Honghao , Ye, Ruifang , Wu, Donghua et al. Efficient multi-needle electrospinning based on regulating multiple geometric factors to optimize electric-field uniformity [J]. | MATERIALS TODAY COMMUNICATIONS , 2025 , 48 . |
| MLA | Zhang, Honghao et al. "Efficient multi-needle electrospinning based on regulating multiple geometric factors to optimize electric-field uniformity" . | MATERIALS TODAY COMMUNICATIONS 48 (2025) . |
| APA | Zhang, Honghao , Ye, Ruifang , Wu, Donghua , Shao, Zungui , Zheng, Gaofeng . Efficient multi-needle electrospinning based on regulating multiple geometric factors to optimize electric-field uniformity . | MATERIALS TODAY COMMUNICATIONS , 2025 , 48 . |
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The environmentally friendly, economical, and efficient production of high-performance and multifunctional bio-based air filter membranes is crucial for the protection of human health and sustainable development. However, this endeavor is significantly limited by the current gap in material selection and process routes. This study proposes a strategy for advanced functionalization and structural optimization of ethyl cellulose (EC) to effectively develop a high-performance, fully bio-based air filter membrane exhibiting superior antibacterial properties. Through the minimal interference method, konjac glucomannan (KGM) and curcumin (Cur) were blended with EC, which preserved the bimodal fibers to the highest degree. By green electrospinning in one step, the quality factor of EC/KGM/Cur membranes reached 0.101 Pa-1, the antibacterial activity against Escherichia coli and Staphylococcus aureus reached >99.6 %, and the productivity of EC/KGM/Cur membranes prepared by using sheath gas was increased by almost 14.73 times. This study offers a sustainable, scalable, and versatile manufacturing approach for air filters and thus a promising solution to the urgent need for environmentally friendly and efficient filter systems.
Keyword ：
Air filtration Air filtration Antibacterial properties Antibacterial properties Bimodal fibers Bimodal fibers Bio-based membrane Bio-based membrane Green electrospinning Green electrospinning
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| GB/T 7714 | Chen, Ruixin , Wang, Qibin , Shen, Ruimin et al. Green and efficient electrospinning of ethyl cellulose-based nanofibrous membrane for high-performance and antibacterial air filtration [J]. | CARBOHYDRATE POLYMERS , 2025 , 366 . |
| MLA | Chen, Ruixin et al. "Green and efficient electrospinning of ethyl cellulose-based nanofibrous membrane for high-performance and antibacterial air filtration" . | CARBOHYDRATE POLYMERS 366 (2025) . |
| APA | Chen, Ruixin , Wang, Qibin , Shen, Ruimin , Gui, Zeqian , Yan, Yuhang , Tang, Min et al. Green and efficient electrospinning of ethyl cellulose-based nanofibrous membrane for high-performance and antibacterial air filtration . | CARBOHYDRATE POLYMERS , 2025 , 366 . |
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Flexible photodetectors are ideal for short-range communication in lightweight microintegrated systems. However, low-bonding interface and high-power cost of photosensitive components greatly limit their application in flexible communication systems. To address this, herein, piezophototronic effect-enhanced sensing components are proposed for flexible photodetectors. This approach leverages the piezophototronic effect to modulate nanoscale charge transport and the precision of electrohydrodynamic direct-writing to achieve controlled nanofiber assembly, thereby enhancing interfacial bonding and overall device performance. By employing electrohydrodynamic direct-writing, a copper-ammonia complex ((Cu(NH3))(CN)) nanofiber is self-stacked on a zinc oxide (ZnO) nanofiber to construct a zinc oxide and copper ammine complex (ZnO@(Cu(NH3))(CN)) photodetector with low static power consumption and high responsiveness through the combined effects of piezoelectricity and fiber self-stacking. The dark current is reduced to 1.12 x 10-7 A, and the static power consumption of the photodetector is also decreased. The responsiveness is up to 13.3 A/W, with response and recovery times of 11 and 9 ms under ultraviolet (UV) light illumination, respectively, fulfilling the requirements for highly sensitive photodetection owing to the high interface bonding. The detector's threshold voltage is tunable, ranging from 6 V for 5 stacking layers to 20 V for 25 stacking layers, thereby allowing the device's performance to be precisely tailored to specific application requirements. Leveraging the exceptional optoelectronic performance of the ZnO@(Cu(NH3))(CN) photodetector, this study expands the application scenarios of flexible photodetectors and demonstrates their potential in the fields of 6G technology and battlefield communication.
Keyword ：
Electrohydrodynamic direct-writing Electrohydrodynamic direct-writing Encrypted communication Encrypted communication Flexible photodetectors Flexible photodetectors Piezophototronic effect-enhanced Piezophototronic effect-enhanced Self-stacking Self-stacking
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| GB/T 7714 | Du, Xianruo , Peng, Zhenghui , Liang, Yanyang et al. Piezophototronic Effect-Enhanced Highly Sensitive Flexible Photodetectors Based on Electrohydrodynamic Direct-writing Nanofiber Self-stacking [J]. | ADVANCED FIBER MATERIALS , 2025 , 7 (4) : 1232-1243 . |
| MLA | Du, Xianruo et al. "Piezophototronic Effect-Enhanced Highly Sensitive Flexible Photodetectors Based on Electrohydrodynamic Direct-writing Nanofiber Self-stacking" . | ADVANCED FIBER MATERIALS 7 . 4 (2025) : 1232-1243 . |
| APA | Du, Xianruo , Peng, Zhenghui , Liang, Yanyang , Zheng, Chenqi , Zhong, Yisheng , Chen, Ruixin et al. Piezophototronic Effect-Enhanced Highly Sensitive Flexible Photodetectors Based on Electrohydrodynamic Direct-writing Nanofiber Self-stacking . | ADVANCED FIBER MATERIALS , 2025 , 7 (4) , 1232-1243 . |
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