离子液体辅助水热法制备TiO2/CoFe2O4复合材料及光催化性能
Journal of the Chinese Ceramic Society(2015)
Abstract
以离子液体([C4MIM]BF4)为辅助剂、铁酸钴为磁核,用水热法制备了可磁分离TiO2/CoFe2O4新型复合光催化材料.利用X射线衍射、N2吸附-脱附和透射电子显微镜对样品进行表征;以亚甲基蓝溶液为模拟污染物,在模拟太阳光下考察样品光催化性能.结果表明:加入离子液体制备的TiO2/CoFe2O4样品具有介孔结构,TiO2稳定的包覆在CoFe2O4上,其比表面积可达238.3 m2/g;在模拟太阳光下照射2h,对亚甲基蓝的降解率可达97.9%.样品经磁场回收后重复使用3次光降解率为96.1%,依然保持较高的光催化活性.
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Key words
titanium dioxide,cobalt iron oxide,ionic liquid,hydrothermal method,adjuvant
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