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Laminar regenerated cellulose membrane employed for high-performance photothermal-gating osmotic power harvesting
Carbohydrate Polymers ( IF 10.7 ) Pub Date : 2022-05-26 , DOI: 10.1016/j.carbpol.2022.119657
Xin Li 1 , Peng Cheng 1 , Jiankang Zhang 1 , Haq Nawaz 1 , Yanglei Xu 2 , Feng Xu 1
Affiliation  

Inspired by acute temperature sensors in the mammalian sensory system to seek comfortable living environment, we construct temperature sensing nanochannels that are tightly linked to photo gating to form photothermal controlled nanochannels membrane. This membrane arises from the composite of laminar regenerated cellulose (RC) membrane formed by dissolution and regeneration of cellulose in the novel superbase-derived ionic liquid and poly-l-lysine (PLL)-modified conical nanochannels polyethylene terephthalate (PET) substrate. Fe3O4 nanoparticles are introduced into RC membrane as gating modifiers, controlling ion flux and osmotic energy conversion. Nanochannels are activated upon photo, inducing temperature changes result in PLL molecule structure shifted from α-helix to β-sheet. The difference in the rectification ratio at different temperatures is associated with photothermal-dependent opening and closing, its maximum is 116.76. This system could deliver an output power of approximately 4.9 W/m2 in osmotic energy harvesting. Our results suggest a simple photothermal-gating ion transport principle in laminar RC membrane.



中文翻译:

用于高性能光热门控渗透能收集的层状再生纤维素膜

受哺乳动物感觉系统中的急性温度传感器寻求舒适生活环境的启发,我们构建了与光门控紧密相连的温度传感纳米通道,形成光热控制的纳米通道膜。该膜由纤维素在新型超碱衍生离子液体中溶解和再生形成的层状再生纤维素(RC)膜与聚赖氨酸(PLL)改性的锥形纳米通道聚对苯二甲酸乙二醇酯(PET)基材复合而成。铁3 O 4纳米粒子作为门控改性剂被引入 RC 膜,控制离子通量和渗透能量转换。纳米通道在照片时被激活,诱导温度变化导致 PLL 分子结构从α-螺旋转变为β-折叠。不同温度下整流比的差异与光热开闭有关,最大值为116.76。该系统可以在渗透能量收集中提供大约 4.9 W/m 2的输出功率。我们的结果表明了层状 RC 膜中的简单光热门控离子传输原理。

更新日期:2022-05-26
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