干旱区生态环境知识资源中心(Arid): Construction of PDA@PAM-CMCNa-CaCl2 Vertical Porous Hydrogels for Solar-Powered Spontaneous Atmospheric Water Harvesting

Arid

DOI	10.1134/S0965545X23701079
	Construction of PDA@PAM-CMCNa-CaCl2 Vertical Porous Hydrogels for Solar-Powered Spontaneous Atmospheric Water Harvesting
	Ren, Tiantian; Xu, Yuanyuan; Wu, Jianning; Meng, Guihua; Yang, Shengchao; Cui, Lin; Liu, Zhiyong; Guo, Xuhong
通讯作者	Wu, JN
来源期刊	POLYMER SCIENCE SERIES A
ISSN	0965-545X
EISSN	1555-6107
出版年	2023
英文摘要	Collecting water from the air could alleviate freshwater shortages in arid regions such as remote and inland areas. However, it is challenging to prepare adsorption materials that have high adsorption and desorption performance using straightforward synthesis routes for water harvesting applications. In this paper, a polydopamine (PDA)@Sodium polyacrylamide carboxymethyl cellulose (PAM-CMCNa)-calcium chloride (CaCl2) composite aerogel (PDCA) with a vertical channel was prepared by salt template method and photopolymerization for atmospheric water collection (AWH). The designed vertical channel promotes the rapid transport of water molecules from the atmosphere to the interior of the hydrogel through capillary action. During this process, the hydrogel further expands to prevent the leakage of the internal salt solution, which effectively improves the water vapor adsorption and desorption by hydrogel. Experimental results showed that the hydrogel can absorb 2.78 g/g of water at 90% relative humidity (RH), where 56.3% of the captured water can be desorbed within 60 min of exposure under 1.0 sun light intensity. After 10 adsorption-desorption cycles, the PDCA still possesses excellent water sorption performance. The indoor water collection test showed that the water collection performance reached 2.143 kg/kg day at 90% RH and 25 & DEG;C adsorption for 12 h and desorption for 6 h. The proposed method for the preparation of PDCA composites can achieve high water harvesting performance over a wide humidity range to enable solar-driven clean water production in remote areas.
类型	Article ; Early Access
语种	英语
收录类别	SCI-E
WOS记录号	WOS:001065254600002
WOS关键词	ADSORPTION
WOS类目	Polymer Science
WOS研究方向	Polymer Science
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/398158
推荐引用方式 GB/T 7714	Ren, Tiantian,Xu, Yuanyuan,Wu, Jianning,et al. Construction of PDA@PAM-CMCNa-CaCl2 Vertical Porous Hydrogels for Solar-Powered Spontaneous Atmospheric Water Harvesting[J],2023.
APA	Ren, Tiantian.,Xu, Yuanyuan.,Wu, Jianning.,Meng, Guihua.,Yang, Shengchao.,...&Guo, Xuhong.(2023).Construction of PDA@PAM-CMCNa-CaCl2 Vertical Porous Hydrogels for Solar-Powered Spontaneous Atmospheric Water Harvesting.POLYMER SCIENCE SERIES A.
MLA	Ren, Tiantian,et al."Construction of PDA@PAM-CMCNa-CaCl2 Vertical Porous Hydrogels for Solar-Powered Spontaneous Atmospheric Water Harvesting".POLYMER SCIENCE SERIES A (2023).