A Scalable Route to Constructing Hydrogel-Encapsulated Lithium-Ion Sieves-Based Photothermal Fabric Adsorbent for Solar-Enhanced Lithium Extraction from Seawater

被引：1

作者：

Han, Zihang ^{[1
]}

Qi, Shumao ^{[1
]}

Fu, Mengtao ^{[1
]}

Han, Li ^{[1
]}

Hong, Chenxiao ^{[1
,2
,3
]}

Shen, Zhongyi ^{[1
]}

Wang, Xuecheng ^{[1
]}

Su, Kaiyuan ^{[4
]}

Xue, Xiaogang ^{[4
]}

Zhang, Bowu ^{[1
,2
,3
]}

Gu, Jianzhong ^{[1
]}

Ma, Hongjuan ^{[1
]}

机构：

[1] Shanghai Univ, Shanghai Appl Radiat Inst, Sch Environm & Chem Engn, Shanghai 200444, Peoples R China

[2] Shanghai Normal Univ, MOE Key Lab Resource Chem, Shanghai Key Lab Rare Earth Funct Mat, Joint Int Res Lab Resource Chem,Minist Educ, Shanghai 200234, Peoples R China

[3] Shanghai Normal Univ, Shanghai Frontiers Sci Ctr Biomimet Catalysis, Shanghai 200234, Peoples R China

[4] Guilin Univ Elect Technol, Sch Optoelect Engn, Guangxi Key Lab Optoelect Informat Proc, Guilin 541004, Peoples R China

来源：

ADVANCED FUNCTIONAL MATERIALS | 2025年

基金：

中国国家自然科学基金;

关键词：

electron beam irradiation; interfacial solar evaporation; lithium extraction from seawater; lithium-ion sieves; photothermal adsorbent; COMPOSITE ADSORBENT; RECOVERY; LI+; DESALINATION; EFFICIENT; CHITOSAN;

D O I：

10.1002/adfm.202422901

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Lithium extraction from seawater is deemed as the promising solution to coping with the booming demand for lithium. However, the trace lithium concentration and low temperature in seawater limit the adsorption amount of lithium on conventional adsorbents. Here, a novel scalable method is developed for constructing a photothermal fabric adsorbent for lithium extraction by encapsulating graphite powder (GP) and lithium-ion sieves (LISs) with polyvinyl alcohol (PVA), which is then simultaneously coated onto commercial cotton fabric through electron beam (EB) irradiation-induced crosslinking. Benefited from the evaporation-induced ion concentration effects and solar-heated microenvironment, the lithium adsorption kinetics of the adsorbent is accelerated with the assistance of solar illumination, which achieve a 55.0% lithium removal ratio in seawater in just 30 min sun illumination, whereas just 30.0% under dark condition. A 21-day solar-assisted offshore adsorption test confirmed the photothermal fabric adsorbent can sequester 15.71 mgLi g-1, approximate to 25.9% increase in comparison with that without solar illumination. Considering the cost of the adsorbent as low as 2.98 $ kg-1, this research provides a simple and scalable method for the preparation of low-cost photothermal adsorbent for efficient extraction of lithium from seawater on an industrial scale.

引用

页数：14

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