The Gel/CS/PPy-C and Gel/CS/PPy-A composite hydrogels with light-sensitive performance were prepared by uniformly dispersing the polypyrrole (PPy) into the gelatin/chitosan (Gel/CS) matrix,and using copper chloride dihydrate (CuCl2·2H2O) and ammonium persulfate (APS) as oxidants.The structure of the hydrogels was characterized by scanning electron microscopy (SEM),fourier transform infrared spectroscopy (FT-IR) and ultraviolet visible spectroscopy (UV-Vis).The adsorbed and in situ reduction Cr(Ⅵ) ability of the hydrogels were also investigated.The results showed that after NaBH4 reduction treatment,Gel/CS/PPy-C composite hydrogel showed higher adsorption capacity and in-situ reduction rate of Cr (Ⅵ).In addition,the prepared materials showed excellent photosensitivity,and the in-situ reduction of Cr(Ⅵ) could be enhanced by illumination.
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基金资助
陕西省自然科学基础研究计划资助项目(2020JM-226);中央高校基本科研业务费专项资金(310829161015)
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