气候变化领域集成服务门户(CCPortal): Viscoelastic solid-repellent coatings for extreme water saving and global sanitation

CCPortal

DOI	10.1038/s41893-019-0421-0
	Viscoelastic solid-repellent coatings for extreme water saving and global sanitation
	Wang J.; Wang L.; Sun N.; Tierney R.; Li H.; Corsetti M.; Williams L.; Wong P.K.; Wong T.-S.
发表日期	2019
ISSN	2398-9629
起始页码	1097
结束页码	1105
卷号	2 期号:12
英文摘要	Water scarcity threatens over half of the world’s population, yet over 141 billion litres of fresh water are used globally each day for toilet flushing. This is nearly six times the daily water consumption of the population in Africa. The toilet water footprint is so large primarily because large volumes of water are necessary for the removal of human faeces; human faeces is viscoelastic and sticky in nature, causing it to adhere to conventional surfaces. Here, we designed and fabricated the liquid-entrenched smooth surface (LESS)—a sprayable non-fouling coating that can reduce cleaning water consumption by ~90% compared with untreated surfaces due to its extreme repellency towards liquids, bacteria and viscoelastic solids. Importantly, LESS-coated surfaces can repel viscoelastic solids with dynamic viscosities spanning over nine orders of magnitude (that is, three orders of magnitude higher than has previously been reported for other repellent materials). With an estimated 1 billion or more toilets and urinals worldwide, incorporating LESS coating into sanitation systems will have significant implications for global sanitation and large-scale wastewater reduction for sustainable water management. © 2019, The Author(s), under exclusive licence to Springer Nature Limited.
语种	英语
scopus关键词	Coatings; Sanitation; Water conservation; Water management; Dynamic viscosities; Global sanitation; Non-fouling coatings; Orders of magnitude; Sanitation systems; Sustainable water management; Three orders of magnitude; Viscoelastic solids; Viscoelasticity
来源期刊	Nature Sustainability
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/163544
作者单位	Department of Mechanical Engineering, The Pennsylvania State University, University Park, PA, United States; Materials Research Institute, The Pennsylvania State University, University Park, PA, United States; Department of Materials Science and Engineering, The Pennsylvania State University, University Park, PA, United States; Centre for Competitive Creative Design, Cranfield University, Cranfield, United Kingdom; Department of Biomedical Engineering, The Pennsylvania State University, University Park, PA, United States
推荐引用方式 GB/T 7714	Wang J.,Wang L.,Sun N.,et al. Viscoelastic solid-repellent coatings for extreme water saving and global sanitation[J],2019,2(12).
APA	Wang J..,Wang L..,Sun N..,Tierney R..,Li H..,...&Wong T.-S..(2019).Viscoelastic solid-repellent coatings for extreme water saving and global sanitation.Nature Sustainability,2(12).
MLA	Wang J.,et al."Viscoelastic solid-repellent coatings for extreme water saving and global sanitation".Nature Sustainability 2.12(2019).