可回收Fe3O4@SiO2-Ag磁性纳米微球对染料污染物的快速脱色处理

催化学报 , 2013, 34(7): 1378-1385. doi: 10.1016/S1872-2067(12)60605-6

可回收Fe3O4@SiO2-Ag磁性纳米微球对染料污染物的快速脱色处理

孙丽娟 ^1, , 何疆 ^2, , 安松松 ^3, , 张军伟 ^4, , 郑金敏 ^5, , 任栋 ^6,

1.兰州大学功能有机分子化学国家重点实验室,甘肃兰州 730000

2.兰州大学功能有机分子化学国家重点实验室,甘肃兰州 730000

3.兰州大学功能有机分子化学国家重点实验室,甘肃兰州 730000

4.兰州大学磁学与磁性材料教育部重点实验室,甘肃兰州 730000

5.兰州大学功能有机分子化学国家重点实验室,甘肃兰州 730000

6.兰州大学功能有机分子化学国家重点实验室,甘肃兰州 730000

基金项目: 国家自然科学基金(J1103307) the Natural Science Foundation of Gansu Province in China(3ZS041-A25-009) 甘肃省自然科学基金(3ZS041-A25-009) the National Natural Science Foundation of China(J1103307)

关键词：四氧化三铁纳米颗粒 , 催还还原 , 染料 , 可回收催化剂

Recyclable Fe3O4@SiO2-Ag magnetic nanospheres for the rapid decolorizing of dye pollutants

SUN Lijuan ^1, , HE Jiang ^2, , AN Songsong ^3, , ZHANG Junwei ^4, , ZHENG Jinmin ^5, , REN Dong ^6,

1.兰州大学功能有机分子化学国家重点实验室,甘肃兰州 730000

2.兰州大学功能有机分子化学国家重点实验室,甘肃兰州 730000

3.兰州大学功能有机分子化学国家重点实验室,甘肃兰州 730000

4.兰州大学磁学与磁性材料教育部重点实验室,甘肃兰州 730000

5.兰州大学功能有机分子化学国家重点实验室,甘肃兰州 730000

6.兰州大学功能有机分子化学国家重点实验室,甘肃兰州 730000

Keywords： Fe3O4@SiO2-Ag nanocomposite , Catalytic reduction , Dye , Recyclable catalyst

介绍了一种采用无毒廉价的前驱物制备Fe3O4@SiO2-Ag磁性纳米微球的快捷方法,制备的Fe3O4@SiO2-Ag纳米微球在NaBH4存在下可以催化还原染料污染物.实验结果表明,Fe3O4@SiO2-Ag磁性纳米粒子保持了Ag纳米粒子和Fe3O4纳米粒子的双重优点,不仅对染料罗丹明B和曙红Y具有良好的催化还原效率,而且可以在外加磁场作用下从溶液中快速有效的分离.催化还原反应速率与反应温度及Fe3O4@SiO2-Ag催化剂用量有关,反应体系中表面活性剂和无机盐(Na2SO4)的存在也会影响催化剂的催化活性.该Fe3O4@SiO2-Ag磁性纳米粒子在工业染料污染物处理方面具有应用前景.

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