论文类型：期刊论文
第一作者：Jiaxin Ren
通讯作者：Jiang Gong,Ran Niu
合写作者：Ling Chen,Jinping Qu
发表刊物：Chemical Engineering Journal
收录刊物：SCI
学科门类：工学
一级学科：材料科学与工程
文献类型：J
卷号：485
页面范围：141511
发表时间：2023-02-15
摘要：Porous hydrogel with intrinsic hydrophilicity and reduced vaporization enthalpy has emerged as a rising star for solar-driven interfacial water distillation and desalination. However, the development of facile, general and scalable approaches capable of simultaneously engineering the molecular and microporous structure is urgently needed for hydrogel evaporators but a daunting challenge. Herein, a freeze-soak method based on Hofmeister effect is used to fabricate porous hydrogel evaporators with tunable molecular and microporous structure in large scale. The interconnected porous structure endows the hydrogel with adjustable water transport rate and exceptional desalination performance, while the changeable crystallinity allows the hydrogel with tunable water states. Benefiting from these properties, the hydrogel shows a high evaporation rate of 3.52 kg m-2h−1 with the conversion efficiency of 97.2 % under 1 Sun irradiation. Additionally, the integration of the hydrogel evaporator with a thermoelectric module enables the low-grade heat to electricity conversion. A power density of 0.65 W m−2 is achieved under 1 Sun irradiation. It is anticipated that the Hofmeister effect-mediated porous hydrogel without the assistance of freeze-drying will lay a solid foundation for the industrial fabrication of hydrogel for energy conversion and storage, environmental remediation, etc.
发布期刊链接：https://www.sciencedirect.com/science/article/pii/S1385894723002425?via%3Dihub