One-step fabrication of Fe3O4–Cu nanocomposites: High-efficiency and low-cost catalysts for reduction of 4-nitrophenol

摘要: Abstract Transition metal Cu nanocrystals have shown promising prospects for degrading organic pollutants. Herein, high-efficiency Fe3O4–Cu nanocomposites (NCs) been successfully synthesized though a facile one-step thermal decomposition method. With turnover frequency of 6.4 min−1, our NCs (heated temperature: 225 °C) could degrade the 4-nitrophenol in less than 15 s and showed almost unchanged catalytic efficiency (>90%) after recycled reactions up to six times. Furthermore, influence heat treatment on structure, elemental distribution, magnetic property performance was investigated. As temperature increased from 225 °C 285 °C, saturation magnetization decreased 7.27 26.2 emu/g, owing enlarged mass ratio Fe3O4 nanocrystals: nanocrystals. This work provides practical design guidance large-scale fabrication low-cost catalysts, which shows future nitro compounds wastewater.