Li Haoxuan, Zhu Wei, Li Meng, Li Ying, Kwok Ryan T K, Lam Jacky W Y, Wang Lei, Wang Dong, Tang Ben Zhong
Centre for AIE Research, College of Material Science and Engineering, Shenzhen University, Shenzhen, 518061, P. R. China.
Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, 518061, P. R. China.
Adv Mater. 2021 Sep;33(36):e2102258. doi: 10.1002/adma.202102258. Epub 2021 Jul 26.
Solar-driven interfacial steam generation (SISG) has been recognized as a promising strategy to solve water shortages in an eco-friendly and low-cost way. However, the practical application of SISG is vitally restricted by some inherent limits, especially for finite evaporation rate and insufficient working life of evaporator. Herein, a novel SISG system involving an all-fiber porous cylinder-like foam 3D evaporator, side area-assisted evaporation protocol, and aggregation-induced-emission-active solar absorber with "one stone two birds" function is explored. The solar absorber exhibits efficient photothermal conversion, endowing the side area-assisted evaporator with as high as 3.6 kg m h of solar evaporation rate, which is highly desirable for SISG under 1 sun of irradiation. Moreover, the solar absorber is capable of powerfully producing reactive oxygen species upon sunlight irradiation, which results in extraordinary photodynamic killing of bacteria nearby the fiber to prevent biofouling, consequently improving the working life of evaporator.
太阳能驱动的界面蒸汽生成（SISG）已被认为是一种以环保和低成本方式解决水资源短缺问题的有前景的策略。然而，SISG的实际应用受到一些固有限制的严重制约，特别是蒸发器的蒸发速率有限和使用寿命不足。在此，探索了一种新型的SISG系统，该系统包括全纤维多孔圆柱状泡沫3D蒸发器、侧面区域辅助蒸发方案以及具有“一石二鸟”功能的聚集诱导发光活性太阳能吸收器。该太阳能吸收器表现出高效的光热转换性能，使侧面区域辅助蒸发器在1个太阳光照下具有高达3.6 kg m⁻² h⁻¹的太阳能蒸发速率，这对于SISG来说是非常理想的。此外，该太阳能吸收器在阳光照射下能够强力产生活性氧物种，从而对纤维附近的细菌产生非凡的光动力杀灭作用，以防止生物污垢，进而提高蒸发器的使用寿命。
