柔性 CuFe2O4/Fe2O3 纤维的制备及其对 Pb(II) 的吸附性能
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中图分类号：TG178；TB35 文献标志码：A 文章编号：1671-8755（2025）03-0011-08
Preparation of Flexible CuFe2O4/Fe2O3 Fibers and Their Adsorption Performance for Pb（II）
SHI Shuying'，LIU Zetao1，YANG Ailin’，YOU Yongshuang1，GUO Zitao1，GAO Pengfei 1，2 （204号 （1. School of Materials and Chemistry，Southwest University of Science and
Technology，Mianyang 621010，Sichuan，China；2. State Key Laboratory of Solid Lubrication，Lanzhou Institute of Chemical Physics，Chinese Academy of Sciences，Lanzhou 73ooOo，Gansu，China）
Abstract： A simple sol -gel method was developed to prepare precursor spinning solution，and then the magnetic CuFe2O4/Fe2O3 fiberswith excellent flexibility were prepared through electrospinning and heat treatment process，and were applied to the adsorption of heavy metal ions Pb（II） . The results show that the saturation magnetization of the flexible CuFe2O4/Fe2O3 fibers is ，and the surface area is calculated to be 13. 162m2/g . In the adsorption experiment， the maximum adsorption capacity of CuFe2O4/Fe2O3 fibers for Pb（II） calculated from Langmuir model is 50.53mg/g ，which is better than that of CuFe2O4 and Fe2O3 nanoparticles. The high adsorption capacity is due to the self-supporting and non-agglomeration of CuFe2O4/Fe2O3 fibers in aqueous solution，which can fully utilize the adsorption effect of the active sites on the material surface.At the same time， CuFe2O4/Fe2O3 fibers have a strong affinity for Pb（II） and excellent cycling performance. The adsorption priority order of heavy metal ions on CuFe2O4/Fe2O3 fibers is Pb（II）>Cu（II）>Cr（II）>Zn（II）>Ni（II） ，and the fiber adsorbent stil maintains more than 71% of the original adsorption capacity after five adsorption - desorption cycles. Flexible magnetic fibers provide a new solution for simultaneously improving the adsorption capacity of pollutant and achieving rapid magnetic separation.
Keywords： Magnetic adsorbent; CuFe2O4/Fe2O3 ；Sol-gel method；Flexible fiber；Pb（II）
水资源短缺是一个全球性的问题[1]。（剩余12656字）
