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结合静电纺丝技术和凝胶-溶胶法制备了PVDF-SiO2复合纳米纤维膜,通过3-羟丙基三甲氧基硅烷进行巯基修饰,成功制备出具有多级结构的巯基修饰PVDF-SiO2复合纳米纤维膜。除Cu2+实验表明该复合纳米纤维膜对Cu2+的最佳吸附pH为2,吸附符合Langmuir吸附模型,用Langmuir吸附等温式计算得巯基修饰的PVDF-SiO2复合纳米纤维膜对Cu2+的最大吸附量达到145.56mg/g,同时,该复合纳米纤维膜容易在水体中取出,循环利用性能良好。因此,在去除重金属离子(Cu2+)方面具有很好的应用前景。
PVDF-SiO2 composite nanofibrous membranes were prepared by electrospinning and gel-sol method. The mercapto-modified PVDF-SiO2 nanocomposite nanostructures with multi-level structure were successfully prepared by thiol modification with 3-hydroxypropyltrimethoxysilane Fiber membrane. In addition to Cu2 + experiments showed that the composite nanofibrous membrane of Cu2 + optimum adsorption pH of 2, adsorption consistent with Langmuir adsorption model, using Langmuir adsorption isotherm calculated the mercapto-modified PVDF-SiO2 composite nanofibrous membrane of Cu2 + maximum adsorption capacity of 145.56 mg / g, at the same time, the composite nanofiber membrane is easy to remove in water and has good recycling performance. Therefore, the removal of heavy metal ions (Cu2 +) has good application prospects.