Enhanced solar steam generation of hydrogel composite with aligned channel and shape memory behavior

doi:10.1016/j.compscitech.2020.108633

CORC > 兰州理工大学 > 兰州理工大学 > 石油化工学院

	Enhanced solar steam generation of hydrogel composite with aligned channel and shape memory behavior
	He, Jingxian 1,2; Fan, Yukang 1; Xiao, Chaohu 1; Liu, Fang 1,2; Sun, Hanxue 1; Zhu, Zhaoqi 1; Liang, Weidong 1; Li, An 1
刊名	Composites Science and Technology
	2021-03-01
卷号	204
关键词	Associative storage Conversion efficiency Hydrogels Light absorption Shape memory effect Sodium alginate Steam Steam generators Cross-linked hydrogels Directional freezing Hydrogel composites Polyacrylamide(PAM) Shape memory behavior Shape-memory properties Very high energies Water transmission
ISSN号	02663538
DOI	10.1016/j.compscitech.2020.108633
英文摘要	Solar steam generation with unique and highly efficient interface-evaporation manner by directly harvesting solar energy has emerged as one of promising strategies for production of fresh water. Herein, an acetylene black (ACET) doped dual-crosslinked hydrogel composite, which derived from sodium alginate (SA) and polyacrylamide (PAM), has been fabricated via a simple directional freezing treatment followed by a solvent-free polymerization for solar steam generation. The prepared hydrogel (named as ACET/PAM/SA-LN(25)) shows the long-range vertically aligned channel structures which is entirely different from the same hydrogel prepared by traditional method (ACET/PAM/SA). Due to its unique microstructures, the ACET/PAM/SA-LN(25) hydrogel exhibits excellent light absorption (ca. 95%) and has more fast water transmission performance, e.g., the water content (Q) was up to 14.42 g per gram of the corresponding xerogel, which is higher than that of ACET/PAM/SA (8.28 g g−1). The solar steam generation device based on ACET/PAM/SA-LN(25) hydrogel shows a very high energy conversion efficiency of up to 93% under 1 sun radiation. Interestingly, the hydrogel composite exhibits excellent processability and flexibility with shape memory property in the swelling state, which has great advantages over those traditional fragile hydrogels and thus shows significant potential for real operation in solar steam generation. © 2020 Elsevier Ltd
WOS研究方向	Materials Science
语种	英语
出版者	Elsevier Ltd
WOS记录号	WOS:000615484600007
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/147225]
专题	石油化工学院
作者单位	1.College of Petrochemical Technology, Lanzhou University of Technology, Langongping Road 287, Lanzhou; 730050, China; 2.School of Chemistry and Chemical Engineering, Lanzhou City University, Jiefang Road 11, Lanzhou; 730070, China
推荐引用方式 GB/T 7714	He, Jingxian,Fan, Yukang,Xiao, Chaohu,et al. Enhanced solar steam generation of hydrogel composite with aligned channel and shape memory behavior[J]. Composites Science and Technology,2021,204.
APA	He, Jingxian.,Fan, Yukang.,Xiao, Chaohu.,Liu, Fang.,Sun, Hanxue.,...&Li, An.(2021).Enhanced solar steam generation of hydrogel composite with aligned channel and shape memory behavior.Composites Science and Technology,204.
MLA	He, Jingxian,et al."Enhanced solar steam generation of hydrogel composite with aligned channel and shape memory behavior".Composites Science and Technology 204(2021).