The reduction of 4-nitrophenol (4-NP) to 4-aminophenol (4-AP) with less toxicity and easier biodegradable is a promising strategy for industrial wastewater treatment. Herein, we developed a rapid and facile method for loading gold nanoparticles into the surface of NH₂-MIL-101(Fe) (the carrier MOFs) obtained Au@NH₂-MIL-101(Fe) with great structural stability and superior catalytic activity. The as-prepared Au@NH₂-MIL-101(Fe) nanoparticles can absolutely reduce 0.1 mM 4-nitrophenol to 4-aminophenol in 20 s. The well-dispersed Au NPs on interface of NH₂-MIL-101(Fe) provided highly dense active sites and the stable mesoporous structure of the carrier MOFs made the substrate 4-NP closer to the active center, leading to the improvement of the catalytic reduction efficiency. In addition, the composite membranes obtained from Au@NH₂-MIL-101(Fe)-60 could treat for high concentration of 4-NP (2 g/L). This kind of nanoparticles not only lays the foundation for the development of novel catalysts, but also provides a practical and efficient method for industrial 4-NP wastewater treatment.

将 4-硝基苯酚 (4-NP) 还原为 4-氨基苯酚 (4-AP)，毒性更小，更易于生物降解，是一种很有前景的工业废水处理策略。在此，我们开发了一种快速简便的方法，将金纳米颗粒负载到 NH ₂ -MIL-101(Fe)（载体 MOFs）的表面，获得了具有良好结构稳定性和优异催化性能的Au@NH ₂ -MIL-101(Fe)活动。所制备的Au@NH ₂ -MIL-101(Fe)纳米颗粒可以在20 s内将0.1 mM 4-硝基苯酚完全还原为4-氨基苯酚。_{NH 2}界面上分散良好的Au NPs-MIL-101(Fe)提供了高密度的活性位点，载体MOFs稳定的介孔结构使4-NP基体更接近活性中心，从而提高了催化还原效率。此外，由Au@NH ₂ -MIL-101(Fe)-60获得的复合膜可以处理高浓度的4-NP (2 g/L)。这种纳米粒子不仅为新型催化剂的开发奠定了基础，而且为工业4-NP废水处理提供了一种实用、高效的方法。