Abstract
Uniform bismuth selenide hollow nanospheres were synthesized on a large scale in a mixed solvent of ethylene glycol (EG) and oleic acid (OA). The diameter of the Bi 2Se 3 hollow nanospheres is about 600 nm and the thickness of the shell is about 40 nm. The shape evolution of Bi 2Se 3 nanostructures with different volume ratios of EG and OA was also observed: nanoflakes in EG solution, hollow nanospheres as V EG / V OA of 2/3, and finally flower-like nanostructures in OA solution.
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