Abstract
A facile solvothermal route was developed to prepare flower-like Co microcrystals composed of Co nanoplates, in which water/ethanol mixture was used as solvent and ethylenediamine tetraacetic acid sodium was used as complexing agent, respectively. X-ray diffraction pattern showed that the synthesized Co microcrystals were present in hexagonal close-packed phase and x-ray photoelectron spectroscopy analysis indicated that the surface of the sample was oxidized. Scanning electron microscope images revealed that each of the flowery Co microcrystals was composed of several pieces of Co plates with uniform thickness of ca 200 nm. It was found that the solvents played a crucial role in determining the morphology of the Co products and the introduction of a certain amount of ethanol was indispensable for the formation of flower-shaped morphology. Magnetic measurement at room temperature indicated that the coercivity (Hc) of the flower-like Co microcrystals came up to 407.3 Oe, which was much higher than that of bulk Co metal.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
