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Moisture power in natural polymeric silk fibroin flexible membrane triggers efficient antibacterial activity of silver nanoparticles
Nano Energy ( IF 17.6 ) Pub Date : 2021-09-20 , DOI: 10.1016/j.nanoen.2021.106529
Zhe Wang 1 , Jingzhi Li 1 , Changxiang Shao 1 , Xiangyun Lin 1 , Ya’nan Yang 1 , Nan Chen 1 , Ying Wang 1 , Liangti Qu 2
Affiliation  

The deepening research and development of micro currents/potentials has made the tiny electrical signals very common in many applicable fields, such as radio frequency identification (RFID), smart chip cards, cosmetics, low-power wearable electronics, etc. A typical alternative energy source from water vapor/moisture, which is prevalent in nature, moisture power (MP) has not been heavily developed and it is usually applied only as a power supply side, without being assigned new tasks and missions leading to the sharpness being covered up. Here, we designed a flexible antibacterial MP membrane by electrospinning and in situ synthesis of AgNPs. The electrospun membrane containing Oxi-silk fibroin with AgNPs (AgNPs@Oxi-SF) in an asymmetric humid environment can generate MP by the presence of directionally migrating charged ions, which can trigger the release of more free Ag+ from AgNPs and allow AgNPs@Oxi-SF to exhibit better antibacterial activity. The continuous and moderate MP generated by AgNPs@Oxi-SF electrospun membrane (AOSFEM) in a humid environment (RH = 99%, 2 h) allowed it to exhibit nearly 100% bactericidal rate compared to 36.7–56.3% in a non-MP environment.



中文翻译:

天然聚合物丝素蛋白柔性膜中的水分能触发银纳米粒子的高效抗菌活性

微电流/电位的深入研究和开发,使得微小的电信号在许多应用领域非常普遍,如射频识别(RFID)、智能芯片卡、化妆品、低功耗可穿戴电子产品。作为自然界普遍存在的水蒸气/水分的典型替代能源,水分动力(MP)尚未得到大力发展,通常仅作为电源侧应用,没有分配新的任务和任务导致锐度被掩盖。在这里,我们通过静电纺丝和原位设计了一种柔性抗菌 MP 膜AgNPs 的合成。在不对称潮湿环境中,含有 Oxi-silk 丝心蛋白和 AgNPs(AgNPs@Oxi-SF)的电纺膜可以通过定向迁移的带电离子的存在产生 MP,这可以触发更多的游离 Ag +从 AgNPs 中释放出来,并允许 AgNPs@ Oxi-SF 表现出更好的抗菌活性。AgNPs@Oxi-SF 电纺膜 (AOSFEM) 在潮湿环境 (RH = 99%, 2 h) 中产生的连续和中等 MP 使其具有近 100% 的杀菌率,而在非 MP 中为 36.7-56.3%环境。

更新日期:2021-10-04
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