干旱区生态环境知识资源中心(Arid): Light-responsive bilayered hydrogel for freshwater production from surface soil moisture

Arid

DOI	10.1002/eom2.12144
	Light-responsive bilayered hydrogel for freshwater production from surface soil moisture
	Zhang, Mengmeng; Wang, Huiying; Hou, Zaiyan; Chen, Qiang; Xie, Zhanjun; Zhu, Jintao; Xu, Jiangping; Zhang, Lianbin
通讯作者	Xu, JP ; Zhang, LB (corresponding author), Huazhong Univ Sci & Technol HUST, Sch Chem & Chem Engn, Key Lab Mat Chem Energy Convers & Storage HUST, Minist Educ, Wuhan 430074, Peoples R China.
来源期刊	ECOMAT
EISSN	2567-3173
出版年	2021
英文摘要	The search and the utilization of alternative water resources to produce freshwater are highly important to the water shortage, especially in arid and desert regions. In these areas, the surface soil moisture (SSM) can be a promising water source, whereas its extraction and following release remain challenging. In this study, a light-responsive bilayered hydrogel (LRBH) is designed to produce freshwater from SSM, which is obtained by the copolymerization of N-isopropylacrylamide (NIPAM) and acrylic acid (AA) and in-situ surface polymerization of polypyrrole (PPy). By careful optimization of the ratio of NIPAM and AA, the water absorption capacity of LRBH is significantly improved with the water absorption of 4.4 g/g even in the sandy soil with an extremely low water content (similar to 3 wt%). The PPy in the top layer of the LRBH can absorb solar light to heat the hydrogel at daytime so that the temperature of the hydrogel can quickly rise above the lower critical solution temperature of LRBH. As a result, the freshwater is quickly expelled from the LRBH. Under simulated solar light irradiation, 68.6% of all absorbed water within LRBH can be released within 20 min. The current study provides an effective and facile strategy for SSM capture and suitable systems for the generation of freshwater in arid or desert regions.
英文关键词	freshwater production photothermal responsive hydrogels solar absorption surface soil moisture
类型	Article
语种	英语
开放获取类型	gold
收录类别	ESCI
WOS记录号	WOS:000704321200001
WOS关键词	TEMPORAL STABILITY ; DESERT AREA ; SOLAR ; EVAPORATION ; MEMBRANE ; YIELD
WOS类目	Chemistry, Physical ; Green & Sustainable Science & Technology ; Materials Science, Multidisciplinary
WOS研究方向	Chemistry ; Science & Technology - Other Topics ; Materials Science
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/363039
作者单位	[Zhang, Mengmeng; Wang, Huiying; Hou, Zaiyan; Chen, Qiang; Xie, Zhanjun; Zhu, Jintao; Xu, Jiangping; Zhang, Lianbin] Huazhong Univ Sci & Technol HUST, Sch Chem & Chem Engn, Key Lab Mat Chem Energy Convers & Storage HUST, Minist Educ, Wuhan 430074, Peoples R China; [Zhang, Lianbin] Shenzhen Huazhong Univ Sci & Technol Res Inst, Shenzhen, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Mengmeng,Wang, Huiying,Hou, Zaiyan,et al. Light-responsive bilayered hydrogel for freshwater production from surface soil moisture[J],2021.
APA	Zhang, Mengmeng.,Wang, Huiying.,Hou, Zaiyan.,Chen, Qiang.,Xie, Zhanjun.,...&Zhang, Lianbin.(2021).Light-responsive bilayered hydrogel for freshwater production from surface soil moisture.ECOMAT.
MLA	Zhang, Mengmeng,et al."Light-responsive bilayered hydrogel for freshwater production from surface soil moisture".ECOMAT (2021).