| 超声法制备Au/Fe3O4及其催化还原4-硝基苯酚性能 | |
| Ultrasonic Synthesis and Application in Catalytic 4-Nitrophenols Reduction of Au/Fe3O4 | |
| 摘要: 通过简易的超声法以及原位还原法成功制备出了负载型可再生Au/Fe3O4催化剂。利用3-氨丙基三乙氧基硅烷（APTES）作为有机桥键，将Au固定在Fe3O4的表面，得到单分散磁性Au/Fe3O4。Au0在氨基的作用下不会团聚，因此具有较高的催化活性及稳定性。XRD、HRTEM、EDS和XPS等测试结果表明Au/Fe3O4已被成功制备。将其用于催化还原4-硝基苯酚得到4-氨基苯酚，表现出较高的催化活性，速率常数可达0.225 6 min-1。重复性实验表明该催化剂具有良好的稳定性，反应9个循环之后，催化还原反应的转化率仍可达到94%。 | |
| 关键词: 纳米金 四氧化三铁 4-硝基苯酚 催化还原 | |
| 基金项目: 国家自然科学基金（No.21576054，21407028）资助项目。 | |
| Abstract: The Au/Fe3O4 catalyst was successfully prepared by the simple ultrasonic method and in-situ reduction method. Au was immobilized on the surface of Fe3O4 using APTES as an organic bridging bond to obtain monodisperse magnetic Au/Fe3O4. Au0 could not agglomerated in the condition of NH3+, so that it had high catalytic activity and stability. The results of XRD, HRTEM, EDS and XPS showed that Au/Fe3O4 has been prepared successfully. It was used to catalyze the reduction of 4-nitrophenols to 4-aminophenols, which showed high catalytic activity with rate constant of 0.225 6 min-1. The repeatability test showed that the catalyst had good stability. After 9 cycles of reaction, the conversion rate of the reaction was still 94%. | |
| Keywords: Au nanoparticles Fe3O4 4-nitrophenols catalytic reduction | |
| 投稿时间：2016-12-22 修订日期：2017-03-22 | |
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| 顾岩,刘冠廷,邹铖亨,张真,刘娟,孙明,程高,余林.超声法制备Au/Fe3O4及其催化还原4-硝基苯酚性能[J].无机化学学报,2017,33(5):787-795. | |
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