Preparation and characterization of Fe3O4/Ag composite magnetic nanoparticles

作者：C. H. Liu, Zhiren Zhou, Xiaopeng Yu, Bihu Lv, Jiefei Mao, Dan Xiao · 发表于：Inorganic Materials · 年份：2008 · DOI：10.1134/s002016850803014x · 被引用次数：45 · 研究领域：Magnetic Properties and Synthesis of Ferrites、Nanomaterials for catalytic reactions、Nanoparticle-Based Drug Delivery

Fe 3 O 4 magnetic nanoparticles being used as seeding materials, Ag + ions on the Fe 3 O 4 magnetic nanoparticles reduced to the metal form by tartaric acid using heated treatment. Thus, Fe 3 O 4 /Ag composite core-shell magnetic nanoparticles were synthesized. The products were characterized by transmission electron microscope (TEM) and x-ray diffraction (XRD). Both TEM and XRD results showed that the Ag nanoparticles were well distributed on the surface of Fe 3 O 4 magnetic nanoparticles. The size for Fe 3 O 4 /Ag composite magnetic nanoparticles which were spherical shape was ≃40 nm. Furthermore, the magnetic properties of samples were characterized on a vibrating sample magnetometer. Under optimal conditions, Fe 3 O 4 /Ag composite nanoparticles showed higher magnetism than pure Fe 3 O 4 nanoparticles.