JUJUNCAO-Stem-Based Interfacial Solar-Driven Evaporator with Natural Two-Phase Composite Structures of Functional Partition and Inherent Ultralow Vaporization Enthalpy of Water for Stable and Efficient Steam Production,ACS Applied Materials & Interfaces

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JUJUNCAO-Stem-Based Interfacial Solar-Driven Evaporator with Natural Two-Phase Composite Structures of Functional Partition and Inherent Ultralow Vaporization Enthalpy of Water for Stable and Efficient Steam Production
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2024-01-13 , DOI: 10.1021/acsami.3c17962
Chenshu Tan _{1,

2} , Xiaomei Wu _{1,

3} , Linmin Xia _{1,

2} , Jiayun Su _{1,

2} , Jianyu Wu _{1,

2} , Yan Yu _{1,

2} , Rilong Yang _{1,

2}

Affiliation

The interfacial solar-driven evaporation has been deemed as an environmentally friendly approach for freshwater generation. Nevertheless, there is still a challenge to obtain solar evaporators with efficient vapor production from low-cost and renewable biomass through a simple preparation process. Herein, the JUJUNCAO stem was selected as the substrate material, and a kind of interfacial solar-driven evaporator with natural two-phase composite structures and inherent ultralow water vaporization enthalpy was constructed by a dip-coating process. The natural two-phase composite structures were utilized as independent functional partition: the low-tortuosity and hydrophilic vascular bundles served as hierarchical channels for rapid water transportation and continuous steam escape, and the honeycomb-like parenchyma cells were considered natural heat insulators for effective thermal management. Furthermore, the JUJUNCAO stem exhibited inherent ultralow water vaporization enthalpy which was only 1.15 kJ g^–1. Benefiting from the natural two-phase composite structures of functional partition and inherent ultralow water vaporization enthalpy, the C-Js evaporator could achieve an evaporation rate of 2.77 kg m^–2 h^–1 with an efficiency of 85.6% under 1 sun illumination. Meanwhile, the C-Js exhibited a stable and ideal evaporation performance and metal ion rejection behavior in the actual brine desalination process. Owing to the cost-effective and simple pretreatment process, the C-Js evaporator has the potential for freshwater generation in undeveloped areas.

中文翻译：

JUJUNCAO-基于茎的界面太阳能驱动蒸发器，具有功能分区的天然两相复合结构和水固有的超低汽化焓，可稳定高效地产生蒸汽

界面太阳能驱动蒸发被认为是一种环保的淡水生产方法。然而，通过简单的制备过程从低成本和可再生的生物质中获得高效蒸汽生产的太阳能蒸发器仍然存在挑战。本文选择聚菌草茎为基材，通过浸涂工艺构建了一种具有天然两相复合结构和固有的超低水汽化焓的界面太阳能驱动蒸发器。天然两相复合结构被用作独立的功能分区：低曲折度和亲水性的维管束作为快速水输送和连续蒸汽逸出的分层通道，蜂窝状薄壁细胞被认为是有效热的天然隔热体。管理。此外，聚菌草茎表现出固有的超低水汽化焓，仅为1.15 kJ g ^–1 。得益于功能分区的天然两相复合结构和固有的超低水汽化焓，C-Js蒸发器在1太阳照度下可实现2.77 kg m ^–2 h ^–1的蒸发速率，效率高达85.6%。同时，C-Js在实际盐水淡化过程中表现出稳定、理想的蒸发性能和金属离子截留行为。由于成本效益高且预处理过程简单，C-Js蒸发器具有在欠发达地区生产淡水的潜力。

更新日期：2024-01-13

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