Abstract：Magnetic Fe3O4/aminophenolic resin microspheres with core-shell structure (Fe3O4@APF) were prepared by hydrothermal method, and the anchoring effect of the amino groups on the surface of the microspheres was used to load the Au nanoparticles to prepare the magnetic nanocomposite catalyst Fe3O4@APF@Au with core-shell structure by surface in situ reduction method. These catalysts were examined for reduction reaction of 4-nitrophenol. The morphology and surface properties of composite magnetic nanoparticles were characterized by transmission electron microscopy (TEM), infrared spectroscopy (FTIR), X-ray diffraction analysis (XRD) and thermogravimetry (TGA). Their catalytic activity and stability for the reduction of 4-nitrophenol were tested by an ultraviolet-visible spectrophotometer (UV-Vis). The experimental results showed that the composite catalysts Fe3O4@APF@Au were spherical core-shell structure, and had a good catalytic effect on the reduction of 4-nitrophenol. The superparamagnetism of the magnetic core gave it the characteristics of rapid magnetic recovery, controllable separation and redispersion.
ZHAO Xiaoqing. Preparation and Performance Study of Core-Shell Structured Magnetic Composite Catalyst Loaded with Au Nanoparticles[J]. 化学反应工程与工艺, 2020, 36(3): 239-245.
