LAUSR

Prussian blue (PB) and its analogues (PBA) have been recognized as promising materials for the catalysis, energy storage and bioapplications because of the varied constructions and tunable composition. The approaches for surface modification with metal oxide and boosting the performance, however, it is rarely reported. Herein, a facile surface anchoring strategy has been proposed to realize CeO2 nanocrystals uniformly depositing on the surface of PB. Besides, the size, thickness and the depositing density of CeO2 nanocrystals can be regulated through adjusting the amount of precursor and the proportion of ethanol and deionized water. Furthermore, after a step of confined pyrolysis treatment under air atmosphere, CeO2 nanocrystals encapsulated iron oxide structure has been obtained. When evaluated as an anode of lithium-ion battery, it shows a remarkable cycling and rate performance. This CeO2 nanocrystals surface anchoring approach may not only promote the various applications of PB-based materials, but also provides the opportunity for the architecture of other CeO2-based core-shell nanostructures.