双金属改性PAN纤维催化活性染料降解反应

series of bimetal modified polyacrylonitrile (PAN) fibers were prepared by reactions between hydrazine and hydroxylamine modified PAN fibers and mixed metal salt aqueous solutions of ferric chloride and copper sulfate, and then used as heterogeneous Fenton catalysts for the oxidative degradation of Reactive Red 195. The degradation reaction kinetics and UV-Vis spectra changes were investigated, and the catalytic stability of these metal modified PAN fibers was also studied. The results indicated that bimetal modified PAN fibers showed much higher catalytic activities than that of Fe monometal modified PAN fiber for degradation of Reactive Red 195, and the dye degradation followed the pseudo-first order kinetics. UV-vis measurements demonstrated that these metal modified PAN fibers could catalyze the degradation of both aromatic parts and azo form of the dyes. Moreover, their catalytic performance gradually decreased with recycle number increasing, and the introduction of Cu ions could improve the recycling capability of Fe monometal modified PAN fiber.