In this work, we report a facile synthesis of Fe₃O₄@Carbon core-shell nanoparticles (NPs) entrapped satellite Au NPs (denoted as Fe₃O₄@[email protected]). First, multiple Au NPs are directly deposited within the resorcinol-formaldehyde layer of Fe₃O₄@RF in the absence of any external reducing agent. Fe₃O₄@[email protected] NPs obtained after direct carbonization of Fe₃O₄@[email protected] remain the well dispersion of Au NPs within the carbon layer, even after high temperature treatment at 700 °C. Fe₃O₄@[email protected] NPs exhibit ultra stability, high catalytic performance, easy separation and efficient reusability for the reduction of 4-nitrophenol (4-NP). The simple synthesis method of ultra stable Fe₃O₄@C encapsulated with catalytic Au NPs in this work provides a platform for the preparation of other functional nanocomposites.

在这项工作中，我们报告的简便合成的Fe ₃ ö ₄ @Carbon核-壳纳米颗粒（NP）中夹住卫星金纳米粒子（表示为铁₃ ö ₄ @ [电子邮件保护]）。首先，在没有任何外部还原剂的情况下，多个Au NP直接沉积在Fe ₃ O ₄ @RF的间苯二酚-甲醛层中。将Fe ₃ O ₄直接碳化后获得的Fe ₃ O ₄ NPs，即使经过700°C高温处理后，仍能在碳层中良好地分散Au NPs。铁₃ O ₄@ [受电子邮件保护] NPs具有超强的稳定性，高催化性能，易于分离和有效的可重复使用性，可用于还原4-硝基苯酚（4-NP）。在这项工作中，用催化金纳米颗粒包裹的超稳定Fe ₃ O ₄ @C的简单合成方法为制备其他功能纳米复合材料提供了平台。