制备了一种具有磁响应的有机纳米半导体复合光催化材料，并将其用于吸附及光催化降解有机物。利用SEM、TEM、FT-IR及DRS对产物的形貌结构及光吸收性能进行了表征。可见光条件下吸附降解有机染料实验结果表明，Fe₃O₄-PTCDI纳米复合材料具有较好的吸附及光催化活性；经过4 h的紫外光或6 h的吸附及可见光光催化降解，亚甲基蓝的去除效率分别为76.4%及72.2%。6次光催化重复利用实验结果表明，其有机染料的去除效率未出现明显下降。

An organic nano semiconductor composite photocatalytic material with magnetic response is prepared and applied in photocatalytic adsorption and degradation of organic dye (methylene blue).The morphology,structure and optical absorption properties of the as-prepared product are characterized by scanning electron microscopy (SEM),transmission electron microscopy (TEM),infrared spectroscopy (FT-IR) and ultraviolet-visible spectroscopy.It is found through the adsorption and photocatalytic degradation experiments of organic dye under visible light that Fe₃O₄-PTCDI nanocomposites exhibit good adsorption and photocatalytic activity.The removal efficiencies of methylene blue over Fe₃O₄-PTCDI nanocomposites reach 76.4% and 72.2%,respectively after adsorption and photocatalytic degradation under ultraviolet and visible light,respectively.After six runs of cycling experiments,the removal efficiency decreases slightly.In addition,as a photocatalyst,Fe₃O₄-PTCDI nanocomposites exhibit relatively high magnetic responsiveness.

金英伟(1995-),男,硕士研究生,研究方向为环境毒理、化学吸附及多孔材料吸附与表征