Silver Nanoparticle-Enabled Photothermal Nanofibrous Membrane for Light-Driven Membrane Distillation
文献类型： 外文期刊
作者： Ye, Haohui 1 ; Li, Xiong 2 ; Deng, Li 1 ; Li, Peiyun 1 ; Zhang, Tonghui 1 ; Wang, Xuefen 1 ; Hsiao, Benjamin S. 3 ;
作者机构： 1.Donghua Univ, State Key Lab Modificat Chem Fibers & Polymer Mat, Shanghai 201620, Peoples R China
2.Chinese Acad Fishery Sci, East China Sea Fisheries Res Inst, Minist Agr, Key Lab Ocean & Polar Fisheries, Shanghai 200090, Peoples R China
3.SUNY Stony Brook, Dept Chem, Stony Brook, NY 11794 USA
期刊名称：INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH （ 影响因子：3.72； 五年影响因子：3.99 ）
ISSN： 0888-5885
年卷期： 2019 年 58 卷 8 期
页码：
收录情况： SCI
摘要： We demonstrate a novel, innovative photothermal nanofibrous composite membrane for ultraviolet light-driven membrane distillation (UVMD) in which the photothermal nanoparticles, i.e., silver nanoparticles (Ag NPs), are embedded in a porous membrane to capture light (provided by an ultraviolet LED light) without any other heating methods, completing the photothermal transformation at the interface between the surface of the membrane and the water, providing a high-efficiency (53 +/- 7%) heating method for the MD process. Here, Ag NPs were incorporated into the hydrophobic polyvinylidene fluoride (PVDF) nanofibrous membranes by an electrospinning technique. The photothermal heating effect on the desalination capability of the PVDF-Ag nanofibrous membrane was investigated by a UVMD module coupled with a 50 W, 400 nm LED light irradiation source. During the 60 h UVMD test period (3.5 wt % NaCl salt feed), membranes with 20 wt % Ag NPs (with respect to PVDF polymer) presented a flux of 2.5 kg/(m(2).h) and low permeate conductivity (2.65 mu s/cm) with no pore wetting detected. These results indicate that UVMD has prospective application for desalination with the help of novel photothermal nanofibrous membranes through efficient utilization of renewable energy, such as solar energy.
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