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| 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 | |
| 引用本文： | 孙丽娟,何疆,安松松,张军伟,郑金敏,任栋. 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[J]. 催化学报, 2013, 34(7): 1378-1385. DOI: 10.1016/S1872-2067(12)60605-6 |
| 作者姓名： | 孙丽娟 何疆 安松松 张军伟 郑金敏 任栋 |
| 作者单位： | a 兰州大学功能有机分子化学国家重点实验室, 甘肃兰州 730000; b 兰州大学磁学与磁性材料教育部重点实验室, 甘肃兰州 730000 |
| 基金项目： | supported by the National Natural Science Foundation of China(J1103307);the Natural Science Foundation of Gansu Province in China(3ZS041‐A25‐009)~~ |
| 摘 要： | 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. |
| 关 键 词： | 四氧化三铁纳米颗粒 催还还原 染料 可回收催化剂 |
| 收稿时间： | 2013-01-14 |
Recyclable Fe3O4@SiO2-Ag magnetic nanospheres for the rapid decolorizing of dye pollutants |
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| SUN Lijuan a , HE Jiang a, AN Songsong a , ZHANG Junwei b , ZHENG Jinmin a , REN Dong. Recyclable Fe3O4@SiO2-Ag magnetic nanospheres for the rapid decolorizing of dye pollutants[J]. Chinese Journal of Catalysis, 2013, 34(7): 1378-1385. DOI: 10.1016/S1872-2067(12)60605-6 | |
| Authors: | SUN Lijuan a HE Jiang a AN Songsong a ZHANG Junwei b ZHENG Jinmin a REN Dong |
| Affiliation: | a State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, Gansu, China; b Key Laboratory of Magnetism and Magnetic Materials of Ministry of Education, Lanzhou University, Lanzhou 730000, Gansu, China |
| Abstract: | A simple electroless plating method using non-toxic, cost-effective precursors to fabricate Fe3O4@SiO2-Ag nanospheres for catalytic reduction of dye pollutants is developed. Incorporating the individual advantages of Ag and Fe3O4 nanoparticles, the Fe3O4@SiO2-Ag nanospheres exhibit enhanced catalytic reduction efficiency for rhodamine B and eosin Y compared with those of pure Ag or Fe3O4 nanoparticles, and can also be rapidly separated from aqueous solution using a magnet. The catalytic reaction rate is strongly dependent on both reaction temperature and Fe3O4@SiO2-Ag dosage. The presence of surfactants and inorganic salt (Na2SO4) influences the catalytic activity of the Fe3O4@SiO2-Ag nanospheres. Fe3O4@SiO2-Ag nanospheres show great promise for the treatment of industrial dye pollutants. |
| Keywords: | Fe3O4@SiO2-Ag nanocomposite Catalytic reduction Dye Recyclable catalyst |
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