Study On Synthesis And Properties Of Rb-Co-Fe Prussian Blue Analogous Nanomaterials

Multi-function material Prussian blue analogous (PBA) have been focused greatly on during the past decade, for the PBA properties, such as electric catalysis property, magnetic property and dielectric properties, are dependent on both their morphology and composition. In other words, both tuning the content of alkali metal cation in the PBA tetrahedral sites and controlling the PBA particle size could in principle lead to novel nanostructures with distinct properties. But unfortunately, a systematic study on these issues is rather scarce. As is well known, the particle size can be controlled by synthesis method with surfactant. Herein, Rb-Co-Fe PBA materials with different composition and novel morphology were prepared by surfactant template and their properties were thus explored. The characterizations and results are shown in the following two sections:(1) Samples were synthesized in reverse microemulsion, which contains polyoxyethylene tertoctylphenyl ether (Triton X-100), n-hexanol, cyclohexane and water solution. Spherical and cubic nanoparticles PBA with different size and Rb+ content were prepared by adjusting RbCl, K3Fe(CN)6 and CoCl2 content, reaction temperature and aging time. The morphology and dimension of PBA were examined by TEM and SEM. The crystal structure wase characterized by XRD and IR. And the elemental analysis was obtained from EDS. Furthermore, CHI600C and SQUID were exploited to characterize the generation of electric catalytic and magnetic properties, respectively.(2) One-dimensional tube and rough-sphere particles with different structures were synthesized in cetanyl trimethyl ammonium bromide (CTAB), ethanol and water by micelle method. We systematically studied the effects on morphology and composition of products, reaction temperature, CTAB content, the class of surfactant and RbCl, K3Fe(CN)6 and CoCl2 content, for example. The morphology and dimension of PBA were examined by TEM and SEM. The crystal structure wase characterized by XRD and IR. And the elemental analysis was obtained from EDS. Moreover, Vector network analyzer was exploited to characterize the generation of dielectric properties.