Two-Dimensional Flexible Bilayer Janus Membrane for Advanced Photothermal Water Desalination
Two-Dimensional Flexible Bilayer Janus Membrane for Advanced Photothermal Water Desalination
复制标题
用于先进光热海水淡化的二维柔性双层 Janus 膜
DOI：
10.1021/acsenergylett.8b00433
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发表时间：
2018-04
影响因子：
22
通讯作者：
Yan Chun-Hua
中科院分区：
文献类型：
--
作者：
Yang Yanbing;Yang Xiangdong;Fu Linna;Zou Mingchu;Cao Anyuan;Du Yaping;Yuan Quan;Yan Chun-Hua
太阳能蒸发被认为是解决全球缺水问题的一种很有前途的解决方案。然而，要获得一种理想的光热转换膜尤其困难，它具有所有所需的结构特征，如宽光谱吸收、超薄和多孔性、低导热系数和易于放大，从而导致水蒸发效率降低。在这里，我们通过将金纳米棒(AuNR)组装到相互连接的单壁碳纳米管(SWNT)多孔膜上，设计了一种大面积双层Janus膜。高光谱吸收、增强的光热性能、隔热性能、相互连接的多孔结构和优异的机械性能使双层Janus膜在5kW m-2的太阳辐射下具有近94%的蒸发效率，并在长期光照循环中稳定地产生水，作为一种海水淡化膜。建造双层Jan..。
Solar water evaporation is thought to be a promising solution to address the issues of global water scarcity. However, it is particularly difficult to achieve an idealized photothermal conversion membrane with all of the required structure characteristics such as wide spectrum absorption, ultrathin and porous, low thermal conductivity, and ease to scale up, thus leading to reduced water evaporation efficiency. Here, we designed a large-area bilayer Janus film by assembling gold nanorod (AuNR) onto the interconnected single-walled carbon nanotube (SWNT) porous film. The combined characteristics of high solar spectrum absorption, enhanced photothermal performance, thermal insulating feature, interconnected porous structure, and excellent mechanical performance enable the bilayer Janus film with a nearly 94% water evaporation efficiency under 5 kW m–2 solar irradiation and stable water generation capability during long-term illumination cycles as a water desalination membrane. Construction of the bilayer Jan...