改性PANF铁配合物催化降解偶氮染料的研究

Study on Catalytic Degradation of Azo Dyes with Modified PANF Iron Compound

分别使用多胺类化合物（乙二胺、四乙烯五胺、超支化聚乙烯亚胺）和盐酸羟胺对聚丙烯腈纤维（PANF）进行了改性，将改性PANF纱线分别与三氯化铁反应得到 PANFs‐Fe ，并将其作为催化剂应用于偶氮染料活性红195的催化降解反应中。通过增重率、有机元素分析、SEM、XRD及 FTIR对改性 PANF进行了表征，利用EDS对PANF铁配合物中的铁含量进行了分析，并对PANFs‐Fe去除染料的方式及效率进行了探讨。结果表明：四种化合物均成功地对PANF进行了改性。其中，盐酸羟胺改性PANF易与金属铁离子络合形成稳定的铁配合物，铁含量达到11．59％，对染料催化降解具有较高的活性，50 min降解率可以达到90％以上，循环利用3次后，仍具有较高催化活性。

Polyamine compound （ ethylenediamine , tetraethylenepentamine and hyperbranched polyethyleneimine） and hydroxylamine hydrochloride were used to modify polyacrylonitrilefiber （PANF） . The modified PANF fibers reacted with FeCl3 respectively to produce PANFs‐Fe ,and PANFs‐Fe as the catalyst was applied in catalytic degradation of azo dye reactive red 195 .Modified PANF was characterized by weight gain rate ,organic element analysis ,SEM ,XRD and FTIR ;EDS was applied to analyze the iron content of PANFs‐Fe ,and the dye removal methods and efficiency by PANFs‐Fe were also discussed .The results show that the four compounds successfully modify PANF . PANF modified by hydroxylamine hydrochloride is easy to complex with metallic iron ion to form stable iron compound ;the iron content reaches 11 .59% ;it has high activity for catalytic degradation of dyes ;the degradation rate at 50min can reach 90% ;after cyclic utilization for 3 times ,it still has high catalytic activity .