Abstract:
The Fe3O4@Ag/(N-isopropylacrylamide-co-3-methacryloxy propyl trimethoxy silane)(Fe3O4@Ag/P(NIPAM-co-MPTMS)) organic-inorganic composite materials were synthesized through seed-emulsion polymerization method, using Fe3O4@Ag nanoparticles as cores, NIPAM and MPTMS as monomers. The technologies of transmission electron microscopy, X-ray photoelectron spectroscopy, X-ray diffraction, thermogravimetric analysis and UV-Visible spectroscopy were used for analyzing the structure, composition and properties of the prepared Fe3O4@Ag/P(NIPAM-co-MPTMS) materials. It was demonstrated that the dispersity of Ag nanoparticles, loaded on the Fe3O4 nanoparticles, could be regulated by adjusting the initial concentration of silver-ammonia solution. The thickness of the shell of the organic-inorganic hybrid network can be adjusted by the amount of monomer. Furthemore, the Fe3O4@Ag/P(NIPAM-co-MPTMS) composite materials exhibit excellent catalytic activity, temperature sensitivity and reusability.
