干旱区生态环境知识资源中心(Arid): A Functionally Asymmetric Janus Hygro-Photothermal Hybrid for Atmospheric Water Harvesting in Arid Regions

Arid

DOI	10.1002/smll.202306521
	A Functionally Asymmetric Janus Hygro-Photothermal Hybrid for Atmospheric Water Harvesting in Arid Regions
	Chen, Weicheng; Liu, Yangxi; Xu, Bolin; Ganesan, Muthusankar; Tan, Bingqiong; Tan, Yuxuan; Luo, Fan; Liang, Xianghui; Wang, Shuangfeng; Gao, Xuenong; Zhang, Zhengguo; Ye, Ruquan; Leung, Dennis Y. C.; Ravi, Sai Kishore; Fang, Yutang
通讯作者	Fang, YT
来源期刊	SMALL
ISSN	1613-6810
EISSN	1613-6829
出版年	2024
卷号	20 期号:20
英文摘要	Metal-organic frameworks (MOFs) are high-performance adsorbents for atmospheric water harvesting but have poor water-desorption ability, requiring excess energy input to release the trapped water. Addressing this issue, a Janus-structured adsorbent with functional asymmetry is presented. The material exhibits contrasting functionalities on either face - a hygroscopic face interfaced with a photothermal face. Hygroscopic aluminum fumarate MOF and photothermal CuxS layers are in-situ grown on opposite sides of a Cu/Al bimetallic substrate, resulting in a CuxS-Cu/Al-MOF Janus hygro-photothermal hybrid. The two faces serve as independent factories for photothermal conversion and water adsorption-desorption respectively, while the interfacing bimetallic layer serves as a heat conveyor belt between them. Due to the high porosity and hydrophilicity of the MOF, the hybrid exhibits a water-adsorption capacity of 0.161 g g-1 and a fast adsorption rate (saturation within 52 min) at 30% relative humidity. Thanks to the photothermal CuxS, the hybrid can reach 71.5 degrees C under 1 Sun in 20 min and desorb 97% adsorbed water in 40 min, exhibiting a high photothermal conversion efficiency of over 90%. CuxS-Cu/Al-MOF exhibits minimal fluctuations after 200 cycles, and its water-generation capacity is 3.21 times that of powdery MOF in 3 h in a self-designed prototype in one cycle. Drawing on the concept of combining contrasting elements, similar to the Eight Diagrams of ancient China and the Janus of Rome, the CuxS-Cu/Al-MOF presented herein features a functionally asymmetric design where CuxS layers for photothermal conversion and MOF layers for H2O adsorption-desorption are integrated in the device. This design enhances water generation proving effective even in low-temperature arid environments. image
英文关键词	atmospheric water harvesting heat conduction enhancement hygroscopic material in situ growth janus structure metal-organic framework photothermal adsorbent
类型	Article
语种	英语
开放获取类型	hybrid
收录类别	SCI-E
WOS记录号	WOS:001163335900001
WOS关键词	METAL-ORGANIC-FRAMEWORK ; EQUILIBRIUM ; ADSORBENT ; DEVICE
WOS类目	Chemistry, Multidisciplinary ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter
WOS研究方向	Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/405631
推荐引用方式 GB/T 7714	Chen, Weicheng,Liu, Yangxi,Xu, Bolin,et al. A Functionally Asymmetric Janus Hygro-Photothermal Hybrid for Atmospheric Water Harvesting in Arid Regions[J],2024,20(20).
APA	Chen, Weicheng.,Liu, Yangxi.,Xu, Bolin.,Ganesan, Muthusankar.,Tan, Bingqiong.,...&Fang, Yutang.(2024).A Functionally Asymmetric Janus Hygro-Photothermal Hybrid for Atmospheric Water Harvesting in Arid Regions.SMALL,20(20).
MLA	Chen, Weicheng,et al."A Functionally Asymmetric Janus Hygro-Photothermal Hybrid for Atmospheric Water Harvesting in Arid Regions".SMALL 20.20(2024).