石墨烯
材料科学
光热治疗
气凝胶
海水淡化
太阳能淡化
蒸发
太阳能
气流
工艺工程
气象学
纳米技术
环境科学
机械工程
工程类
电气工程
物理
化学
生物化学
膜
作者
Sujuan Wu,Jinlei Zhang,Shuyi Wu,Yunsong Di,Cihui Liu,Lifeng Dong,Liyan Yu,Zhixing Gan
标识
DOI:10.1002/ente.202100757
摘要
Solar steam generation (SSG) is a promising approach to solve the shortage of fresh water resources. Despite intensive research on photothermal materials, the SSG performance is still unsatisfactory for practical applications. Moreover, the actual solar trajectory is a semicircular arc, resulting in a continuous change of the incident angle, which is often ignored in previous reports. Herein, an inverse‐bowl‐shaped graphene aerogel (IBGA) is synthesized as the photothermal component for the SSG, which can always maintain a high water evaporation rate with the change of the incident angles. Furthermore, a solar‐driven airflow is introduced based on a modified Stirling engine to enhance the SSG performance. The SSG device based on IBGA with solar‐driven airflow exhibits a high evaporation rate of 2.46 kg m −2 h −1 under 1 sun irradiation. The outdoor experiments demonstrate that an SSG device with 1 m 2 of IBGA can collect 15 kg freshwater on a sunny day, showing great potential for seawater desalination and wastewater treatments in practical applications.
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