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 Fe_2O_4;再用一步水热合成法制备G/TiO_2/Co Fe_2O_4三元纳米复合材料.用FT-IR、XRD、AFM、TEM对氧化石墨烯和G/TiO_2/Co Fe_2O_4复合材料进行表征,并在紫外光照下对比G/TiO_2,TiO_2/Co Fe_2O_4,G/TiO_2/Co Fe_2O_4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/TiO_2/Co Fe_2O_4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/TiO_2,TiO_2/Co Fe_2O_4,光催化40 min后,脱色率达90%.G/TiO_2/Co Fe_2O_4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.
Graphene oxide（ GO） was synthesized from natural flake graphite via a modified Hummers method. G / TiO_2/ Co Fe_2O_4 ternary nanocomposite was synthesized from Co Fe_2O_4 via hydrothermal method,while Co Fe_2O_4 was synthesized from Fe Cl_2 and Fe Cl_3 via coprecipitation method. The synthetic production（ GO and G / TiO_2/ Co Fe__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 / TiO_2,TiO_2/Co Fe_2O_4,G/Co Fe_2O_4/ TiO_2 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/ TiO_2 composite material is significantly greater than by pure G / TiO_2 and TiO_2/ Co Fe2O4. Therefore,G / Co Fe2O4/ TiO_2 composite material shows more opportunities for application in photocatalytic degradation of dye wastewater.
出处
《湖北大学学报（自然科学版）》
CAS
2016年第3期195-200,207,共7页
Journal of Hubei University：Natural Science
基金
湖北省教育厅科学研究基金(Q20110010)资助
关键词
氧化石墨烯
二氧化钛
钴铁氧体
复合材料
光催化
亚甲基蓝降解
graphene oxid（GO）
titanium dioxide
cobalt ferrite
composite materials
photocatalytic
degradation of methylene blue
