Enhanced Catalytic Properties of PAN Nonwoven Supported Cu-Fe Bimetallic Complex for Formaldehyde Degradation
HAN Xu1, HAN Zhenbang1,2, ZHAO Xiaoming1,2, ZHAO Jin1, ZHAO Shihuai3
1 School of Textiles, Tianjin Polytechnic University, Tianjin 300387; 2 Key Laboratory of Advanced Textile Composite Materials of Ministry of Education,Tianjin Polytechnic University, Tianjin 300387; 3 School of Environment and Chemical Engineering, Tianjin Polytechnic University, Tianjin 300387
Abstract: A Cu-Fe bimetallic catalyst was prepared by immersing amidoximated PAN nonwovens into the mixed metal solution containing CuSO4 and FeCl3. The catalyst was characterized by X-ray photoelectron spectroscopy (XPS) and ultraviolet-visible spectroscopy (UV-vis), and then employed in the oxidative degradation of formaldehyde. The results suggested that Cu2+ and Fe3+ was immobilized onto the catalyst through coordination bonds with O-H and -NH2 in amidoxime group, and there may exist interaction between the two kinds of metal ions through the ligands. In addition, doping Cu2+ make the bimetallic catalyst exhibited better catalytic activity than the monometallic Fe3+ catalyst in formaldehyde degradation, especially under visible light and dark state, this should be attributed to the valence state transformation between Cu2+ and Cu+ which accelerate the generation of high oxidizing Fe(Ⅳ)=O.
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2017, Vol. 31 
