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Banana pseudostem-inspired fluidic photothermal structure towards efficient solar steam generation and continuous salt rejecting

文献类型： 外文期刊

作者： Li, Jiakai 1 ; Lv, Rongxin 1 ; Li, Guiqiu 1 ; Luo, Wenqi 1 ; Wang, Jiashui 2 ; Xia, Meng 1 ; Zhao, Peng 1 ; Chen, Yongyao 1 ; Wu, Senjia 1 ; Chen, Qi 1 ; Shen, Yijun 1 ; Li, Meng 4 ; Xiao, Wei 5 ; Dong, Wang 3 ; Xiao, Juanxiu 1 ;

作者机构： 1.Hainan Univ, Sch Marine Sci & Engn, State Key Lab Marine Resource Utilizat South China, Haikou 570228, Peoples R China

2.Chinese Acad Trop Agr Sci, Key Lab Crop Gene Resources & Germplasm Enhancemen, Haikou Expt Stn, Minist Agr,Trop Crops Genet Resources Inst, Haikou 571101, Peoples R China

3.Hainan Univ, Sch Biomed Engn, State Key Lab Digital Med Engn, Key Lab Biomed Engn Hainan Prov, Haikou 570228, Peoples R China

4.Chongqing Univ, Sch Energy & Power Engn, MOE Key Lab Low grade Energy Utilizat Technol & Sy, CQU NUS Renewable Energy Mat & Devices Joint Lab, Chongqing 400044, Peoples R China

5.Wuhan Univ, Sch Resource & Environm Sci, Hubei Int Sci & Technol Cooperat Base Sustainable, Wuhan 430072, Peoples R China

关键词： Solar-driven steam generation; Biomass; Banana pseudostem; Fluidic photothermal structure; Continuous salt rejecting

期刊名称：DESALINATION （ 影响因子：9.9； 五年影响因子：9.7 ）

ISSN： 0011-9164

年卷期： 2023 年 567 卷

页码：

收录情况： SCI

摘要： Solar-driven steam generation (SSG) is emerging as a promising off-grid strategy to relieve freshwater shortage. In recent years, extensive research works have been conducted to develop full biomass-based SSGs due to their unique hierarchical structural features. However, the long-term durability of biomass-based SSGs remains a concern. Herein, the discarded banana pseudostems have been demonstrated as an excellent potential SSG through a simple surface flame treatment. Firstly, the well-developed pore structure, superior light absorbance, extremely low thermal conductivity and superhydrophilic properties of the surface carbonized banana pseudostem (SCBP) have been well revealed respectively. In addition, it is also demonstrated that the SCBP evaporator can achieve an impressive evaporation rate of up to 2.548 kg center dot m- 2 center dot h-1 with a 91.96 % solar-thermal conversion efficiency superior to most reported biomass based SSGs. Furthermore, a SCBP inspired one-way fluidic photothermal structure is dedicatedly constructed. It is found that the salinity on the top surface of the SCBP evaporator remains far below 26 wt% and the evaporation rate is maintained at 2.384 kg center dot m- 2 center dot h-1 in a 15 wt% NaCl solution even after 200 h. Finally, from a proof-of-concept demonstration, the SCBP evaporator also shows an excellent water purification and seawater desalination performance in a real ocean situation.

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