纳米Fe_3O_4@SiO_2复合材料的疏水改性与吸油性能  

Hydrophobic modification and oil-absorption property of Fe_3O_4@SiO_2 nanocomposite

作　　者：徐洋[1] 王维[1] 谈发堂[1] 芦红飞[1] 陈建国[1] 乔学亮[1] 

机构地区：[1]华中科技大学材料成形与模具技术国家重点实验室,武汉430074

出　　处：《化工新型材料》2016年第6期78-80,共3页New Chemical Materials

基　　金：中央高校基本科研业务费专项资金资助(2014TS025)

摘　　要：采用一步法制备Fe3O4@SiO2纳米复合物,经疏水改性后,获得超顺磁性和超疏水性纳米复合材料。其饱和磁化强度为61.03emu/g,接触角为153.4°。对润滑油的吸附实验结果表明：对润滑油有较好的吸附能力,在30min内就可以达到吸附平衡,最大吸油量为1.40g/g;在pH为5-8范围内,该纳米复合材料呈现出较高的吸附容量;连续循环使用6次,其吸油量仍可达1.34g/g。可见,所制备的疏水型纳米Fe3O4@SiO2复合材料是一种易回收和可循环使用的高效吸油材料。Fe3O4@SiO2 nanocomposites were synthesized by a simple one-pot coprecipitation method.After hydrophobical modification,nanocomposites exhibited superparamagnetic and superhydrophobic properties,and the saturation magnetization and contact angle were 61.03emu/g and 153.4°respectively.The results of oil-absorption tests showed that the as-obtained composites had excellent adsorption performance for lubricant oil,the adsorption equilibrium could be reached within 30 min,and the maximum adsorption capacity was about 1.40g/g.Moreover,the adsorption capacity of namocomposites could still reach 1.34g/g after repeated use for 6times,and the namocomposites exhibited a better performance in the pH range of 5-8.In a word,the synthesized hydrophobic Fe3O4@SiO2 nanocomposites were excellent oiladsorbing materials due to high adsorption capacity with easy recovery and reusability.

关 键 词：Fe3O4@SiO2 纳米复合材料 疏水性 吸油性能 

分 类 号：TB332[一般工业技术—材料科学与工程]