Tang Litao, Lyu Bin, Gao Dangge, Jia Zhangting, Fu Yatong, Ma Jianzhong
College of Bioresources Chemical and Materials Engineering, Shaanxi University of Science & Technology, Xi'an, 710021, China.
National Demonstration Center for Experimental Light Chemistry Engineering Education, Shaanxi University of Science & Technology, Xi'an, 710021, China.
Small. 2024 Apr;20(15):e2308194. doi: 10.1002/smll.202308194. Epub 2023 Nov 27.
Passive heating textiles (PHTs) have drawn increasing attention due to the advantages of energy-conservation heating. However, the heating capabilities of current PHTs are typically static and non-tunable, presenting poor adaptation to dynamic winter. Herein, a novel Janus textile with tunable heating modes is developed by constructing a customized structure with asymmetric optical properties. This Janus textile is created by coating one side of a cotton fabric with silver nanowires (AgNWs) and then applying transition metal carbides/nitrides (MXene) to the other side. The MXene side exhibits high solar absorptivity and low mid-infrared emissivity, while the AgNWs side has moderate solar absorptivity and mid-infrared emissivity. This structure ensures that the solar and radiative heating temperatures of the MXene side are 16 °C and 1.7 °C higher than those of the AgNWs side. This distinction allows for on-demand, accurate adjustments in solar and radiative heating capabilities by flipping the textile according to ambient temperature. Furthermore, this innovative design also features desired electric heating, thermal camouflage, self-cleaning and antibacterial properties, electromagnetic interference shielding, durability, and wearability. The Janus textile enables precise thermoregulation of the human body to adapt to variable cold weather, making it essential for optimal personal thermal management and climate change mitigation.
被动加热纺织品（PHTs）因其节能加热的优点而受到越来越多的关注。然而，目前的被动加热纺织品的加热能力通常是静态的且不可调节，对动态的冬季适应性较差。在此，通过构建具有不对称光学特性的定制结构，开发出一种具有可调加热模式的新型双面纺织品。这种双面纺织品是通过在棉织物的一侧涂覆银纳米线（AgNWs），然后在另一侧施加过渡金属碳化物/氮化物（MXene）而制成的。MXene一侧具有高太阳吸收率和低中红外发射率，而AgNWs一侧具有中等太阳吸收率和中红外发射率。这种结构确保MXene一侧的太阳加热温度和辐射加热温度比AgNWs一侧分别高16℃和1.7℃。这种差异使得可以根据环境温度翻转纺织品，按需精确调整太阳加热和辐射加热能力。此外，这种创新设计还具有所需的电加热、热伪装、自清洁和抗菌性能、电磁干扰屏蔽、耐用性和可穿戴性。这种双面纺织品能够对人体进行精确的温度调节，以适应多变的寒冷天气，这对于优化个人热管理和缓解气候变化至关重要。
