D-PAN@PDA@Ag core-shell nanofibrous membrane-based evaporator for sustained and efficient solar-driven interfacial desalination

被引:8
作者
Li, Shuying [1 ]
Guo, Longfei [1 ]
Xia, Yuguo [1 ]
Chen, Dairong [1 ]
Jiao, Xiuling [1 ]
机构
[1] Shandong Univ, Sch Chem & Chem Engn, Natl Engn Res Ctr Colloidal Mat, Jinan 250100, Peoples R China
基金
中国国家自然科学基金;
关键词
Core-shell fiber; Ultra-thick PDA shell; Ag nanoparticle; Solar-driven interfacial desalination; STEAM-GENERATION; INSPIRED POLYDOPAMINE;
D O I
10.1016/j.seppur.2023.124385
中图分类号
TQ [化学工业];
学科分类号
0817 ;
摘要
Polydopamine (PDA) has been regarded as a meaningful and auxiliary photothermal material owing to its natural mussel foot protein-like functional groups, which can be facilely adhered to other substrates. Nevertheless, simply depositing a uniform and thick PDA shell on the fiber surface remains a challenge. Herein, a uniform super-thick PDA-shelled dopamine/polyacrylonitrile nanofibrous membrane (D-PAN@PDA NFM) with outstanding flexibility and mechanical stability was successfully constructed by the electrospinning and self-polymerization methods. Coupled with plasma Ag nanoparticles, the fabricated D-PAN@PDA@Ag core-shell NFM-based evaporator performed an efficient evaporation rate of 1.91 kg m � 2 h-1 under one-sun irradiation, and the corresponding energy conversion efficiency can reach to 85.5%. Interestingly, the absorption of PDA molecules could be enhanced when it was combined with water molecules, which was further demonstrated through density functional theory calculation. This work provides a new pathway for the construction of pho-tothermal fibrous membranes, expanding their potential application in the photothermal fields.
引用
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页数:9
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