干旱区生态环境知识资源中心(Arid): Preparation of a Bioinspired Conical Needle for Rapid Directional Water Transport and Efficient Fog Harvesting

Arid

DOI	10.1021/acs.iecr.3c01221
	Preparation of a Bioinspired Conical Needle for Rapid Directional Water Transport and Efficient Fog Harvesting
	Liu, Yangkai; Liu, Jian; Chen, Chaolang
通讯作者	Liu, J ; Chen, CL
来源期刊	INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
ISSN	0888-5885
EISSN	1520-5045
出版年	2023
卷号	62 期号:27 页码:10668-10675
英文摘要	Water shortages have become a serious issue that threatensthesurvival of humans, particularly in arid regions. Collecting fog fromthe air environment is an effective approach to obtaining freshwaterresources. Herein, inspired by cactus spines, we fabricated a superhydrophilicconical copper needle by the combination of electrochemical etchingand the SiO2 colloidal self-assembly method for water transportationand fog collection. It was found that a water film would be formedon the surface of the as-prepared copper needle once a water dropletwas transported from the tip to the base, which acted as a lubricatingfilm to reduce the frictional resistance between the following waterdroplets and the copper needle and promote the self-propelled movementof the droplets. As a result, the transport velocity and the longesttransport distance of a single water droplet on the as-prepared copperneedle were high up to 142 mm/s and 42 mm, respectively. Besides,the results reveal that the droplet transport distance decreased withthe increase of apex angles, whereas it increased with the increaseof droplet volume and tilt angles. Additionally, the as-prepared copperneedle exhibited an outstanding water collection rate of similar to 1700mg/h for a single copper needle, which is five times that of the originalcopper needle. This work provides a facile and low-cost method tofabricate conical copper needles for water droplet manipulation andefficient fog collection, showing great application potential in thefields of microfluid, desalination, and freshwater collection.
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:001011429800001
WOS关键词	CLIMATE-CHANGE ; WETTABILITY
WOS类目	Engineering, Chemical
WOS研究方向	Engineering
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/396930
推荐引用方式 GB/T 7714	Liu, Yangkai,Liu, Jian,Chen, Chaolang. Preparation of a Bioinspired Conical Needle for Rapid Directional Water Transport and Efficient Fog Harvesting[J],2023,62(27):10668-10675.
APA	Liu, Yangkai,Liu, Jian,&Chen, Chaolang.(2023).Preparation of a Bioinspired Conical Needle for Rapid Directional Water Transport and Efficient Fog Harvesting.INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH,62(27),10668-10675.
MLA	Liu, Yangkai,et al."Preparation of a Bioinspired Conical Needle for Rapid Directional Water Transport and Efficient Fog Harvesting".INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH 62.27(2023):10668-10675.