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Boosting Water Evaporation by Construction of Photothermal Materials with a Biomimetic Black Soil Aggregate Structure
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2023-07-31 , DOI: 10.1021/acsami.3c09288 Jing Liu 1 , Luoqing Wang 1 , Tao Jia 1 , Zuoyu Wang 1 , Tao Xu 1 , Nan An 1 , Meng Zhao 1 , Ruoyu Zhang 1 , Xiuhua Zhao 1 , Chenglong Li 2
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2023-07-31 , DOI: 10.1021/acsami.3c09288 Jing Liu 1 , Luoqing Wang 1 , Tao Jia 1 , Zuoyu Wang 1 , Tao Xu 1 , Nan An 1 , Meng Zhao 1 , Ruoyu Zhang 1 , Xiuhua Zhao 1 , Chenglong Li 2
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Solar-driven interfacial evaporation is considered an efficient way to get fresh water from seawater. However, the low evaporation rate, surface salt crystallization, and low energy collection of the photothermal evaporation layer limit its further application in an outdoor freshwater field. And the aggregate structure design of the material itself is often ignored in solar-driven water evaporation. Black soil (BS), with a unique soil aggregate structure, is rich in tubular pores, which can be used for multilevel sunlight utilization and good capillary water transport. Based on the extraordinary photothermal properties and pumping capacity of BS, a reasonable unidirectional salt-collecting device is designed, which can realize long-term collection of mineral salts and continuous evaporation of seawater and generate electric energy in the continuous evaporation. Inspired by the unique aggregate structure, the photothermal material doping of halloysite and nigrosin will simulate the generation of this aggregate structure and retain a good water transport effect while obtaining multistage utilization of sunlight. The solar-driven evaporation rate of a nigrosin–halloysite solar steam generator is 1.75 kg m–2 h–1 under 1 kW m–2 mimic solar radiation; it can achieve stable salt leaching-induced voltage generation of 240 mV. This work demonstrates not only a solar evaporator that can continuously achieve desalination but also the design strategy of BS-like aggregate photothermal materials, which promotes the development of low-cost resource recovery and energy generation for practical outdoor seawater desalination.
中文翻译：
仿生黑土骨料结构光热材料的构建促进水蒸发
太阳能驱动的界面蒸发被认为是从海水中获取淡水的有效方法。然而，光热蒸发层的低蒸发速率、表面盐结晶和低能量收集限制了其在室外淡水领域的进一步应用。而在太阳能驱动的水蒸发中，材料本身的聚集体结构设计往往被忽视。黑土（BS）具有独特的土壤团粒结构，富含管状孔隙，可多层次的阳光利用和良好的毛细管水输送。基于BS非凡的光热性能和泵送能力，设计了合理的单向收盐装置，可实现矿物盐的长期收集和海水的连续蒸发，并在连续蒸发中产生电能。受独特的聚集体结构的启发，掺杂埃洛石和苯胺黑的光热材料将模拟这种聚集体结构的生成，并在获得太阳光多级利用的同时保留良好的水传输效果。苯胺黑-埃洛石太阳能蒸汽发生器在1 kW m –2模拟太阳辐射下的太阳能驱动蒸发率为1.75 kg m –2 h –1 ；它可以实现240 mV的稳定盐浸感应电压产生。这项工作不仅展示了一种可以连续实现海水淡化的太阳能蒸发器，而且展示了类BS聚集体光热材料的设计策略，促进了实用户外海水淡化低成本资源回收和能源发电的发展。
更新日期：2023-07-31
中文翻译：
仿生黑土骨料结构光热材料的构建促进水蒸发
太阳能驱动的界面蒸发被认为是从海水中获取淡水的有效方法。然而，光热蒸发层的低蒸发速率、表面盐结晶和低能量收集限制了其在室外淡水领域的进一步应用。而在太阳能驱动的水蒸发中，材料本身的聚集体结构设计往往被忽视。黑土（BS）具有独特的土壤团粒结构，富含管状孔隙，可多层次的阳光利用和良好的毛细管水输送。基于BS非凡的光热性能和泵送能力，设计了合理的单向收盐装置，可实现矿物盐的长期收集和海水的连续蒸发，并在连续蒸发中产生电能。受独特的聚集体结构的启发，掺杂埃洛石和苯胺黑的光热材料将模拟这种聚集体结构的生成，并在获得太阳光多级利用的同时保留良好的水传输效果。苯胺黑-埃洛石太阳能蒸汽发生器在1 kW m –2模拟太阳辐射下的太阳能驱动蒸发率为1.75 kg m –2 h –1 ；它可以实现240 mV的稳定盐浸感应电压产生。这项工作不仅展示了一种可以连续实现海水淡化的太阳能蒸发器，而且展示了类BS聚集体光热材料的设计策略，促进了实用户外海水淡化低成本资源回收和能源发电的发展。
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