【摘要】 以天然鳞片石墨为原料,用改进的Hummers法氧化制备氧化石墨烯;以Fe Cl2,Fe Cl3为原料,用共沉淀法合成Co Fe₂O₄;再用一步水热合成法制备G/TiO₂/Co Fe₂O₄三元纳米复合材料.用FT-IR、XRD、AFM、TEM对氧化石墨烯和G/TiO₂/Co Fe₂O₄复合材料进行表征,并在紫外光照下对比G/TiO₂,TiO₂/Co Fe₂O₄,G/TiO₂/Co Fe₂O₄复合材料对亚甲基蓝的降解效果.结果表明,在紫外光照射下,G/TiO₂/Co Fe₂O₄复合材料光催化降解亚甲基蓝的催化效率明显大于单纯G/TiO₂,TiO₂/Co Fe₂O₄,光催化40 min后,脱色率达90%.G/TiO₂/Co Fe₂O₄复合材料不失为一种有潜力的光催化降解染料废水催化材料.更多还原

【Abstract】 Graphene oxide（ GO） was synthesized from natural flake graphite via a modified Hummers method. G / TiO₂/ Co Fe₂O₄ ternary nanocomposite was synthesized from Co Fe₂O₄ via hydrothermal method,while Co Fe₂O₄ was synthesized from Fe Cl₂ and Fe Cl₃ via coprecipitation method. The synthetic production（ GO and G / TiO₂/ Co Fe_<sub>2O4 composite materials） was characterized by using FT-IR,XRD,AFM,TEM. Then compared the effect on the degradation of methylene blue under the condition of UV irradiation among G / TiO₂,TiO₂/Co Fe₂O₄,G/Co Fe₂O₄/ TiO₂ composite materials. After catalyzing 40 min,the decolorization rate could reach up to 90%. The result suggests that the catalytic efficiency of photocatalytic degradation of methylene blue by G /Co Fe2O4/ TiO₂ composite material is significantly greater than by pure G / TiO₂ and TiO₂/ Co Fe2O4. Therefore,G / Co Fe2O4/ TiO₂ composite material shows more opportunities for application in photocatalytic degradation of dye wastewater.更多还原