文献类型：期刊文献

英文题名：Apple leaf-inspired bilayered Janus wood evaporator with decoupled light-vapor interfaces for high-efficiency solar steam generation

作者：Dai, Xinjian[1] Guan, Hao[1] Wang, Xin[1] Wu, Mingyue[1] Jiang, Pan[1] Chai, Yubo[1] Wang, Xiaoqing[1]

第一作者：Dai, Xinjian

通信作者：Chai, YB[1];Wang, XQ[1]

机构：[1]Chinese Acad Forestry, Res Inst Wood Ind, Xiangshan Rd, Beijing 100091, Peoples R China

年份：2024

卷号：499

外文期刊名：CHEMICAL ENGINEERING JOURNAL

收录：;EI(收录号：20244017123840);Scopus(收录号：2-s2.0-85204991539);WOS:【SCI-EXPANDED(收录号:WOS:001328177500001)】；

基金：This work was financially supported by the National Natural Science Foundation of China (NSFC Grant No. 32371796) .

语种：英文

外文关键词：Wood evaporator; Janus-interface engineering; Bilayered structure; Decoupled light-vapor interfaces; Solar steam generation

摘要：Solar-driven interfacial evaporation technology provides a facile and promising strategy for producing clean water from seawater. Wood-based evaporators have recently been extensively explored for solar desalination due to the structural merits and sustainability of natural wood. However, the light absorption and water evaporation functions are commonly integrated at the same surface for a traditional wood-based solar evaporator, which definitely causes mutual interference between the incident sunlight and the generated vapor leading to inevitable energy loss. Herein, inspired by the unidirectional transpiration of hypostomatic apple leaves, a bilayered Janus wood evaporator with decoupled light absorption and water evaporation surfaces was subtly engineered to avoid the sunlight-vapor interference for efficient solar evaporation. The bilayered evaporator consists of a longitudinal wood piece as the water transport layer and a carbonized transverse wood piece infiltrated with polydimethylsiloxane (PDMS) as the photothermal layer. The hydrophilic longitudinal piece with vertically aligned channels can continuously wick water to the evaporation surface, while the hydrophobic transverse piece with horizontal channels enables efficient heat transfer given its high thermal conductivity. Thanks to the unique bilayered configuration, the developed evaporator demonstrates an excellent evaporation rate of 2.12 kg m(- 2) h(- 1) with an evaporation efficiency of 92.3 % (1 sun), surpassing most of the traditional wood-based evaporators. Moreover, the bilayered evaporator exhibits good salt resistance and can effectively purify diverse wastewaters including organic dye solutions and oil-water emulsions. This Janus-interface structural design provides a novel strategy for developing high-performance solar evaporator toward clean water production.