A novel heterogeneous Fenton photocatalyst prepared using waste wool fiber combined with Fe3+ ions for dye degradation
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Wool fiber Fe complex (Fe-Wool) was prepared with waste wool fiber and Fe3+ ions by a simple exhaust method, and characterized using SEM, FTIR, XRD, XPS, and diffuse reflectance UV-vis spectroscopy. The activity of Fe-Wool was tested as a novel heterogeneous Fenton catalyst for dye degradation in a wide pH range. Effect of Fe content, incorporation of Cu2+ ions, and light irradiation on its catalytic activity was also examined. The results indicated that amino and carboxylic groups or disulfide crosslinks from wool fiber as the ligand sites could react with Fe3+ ions to form Fe-Wool, and the Fe content in Fe-Wool was highly dependent on Fe3+ initial concentration and temperature. Fe-Wool showed a better catalytic activity on the dye degradation under light irradiation than in the dark because it was activated in the UV and visible regions. Incorporation of Cu2+ ions could significantly increase catalytic activity of Fe-Wool for the dye degradation, especially in neutral and alkaline pH range.
KeywordsWaste wool Fe3+ ion Complex Fenton Catalyst Dye degradation
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