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Synthesis of Novel Nickel Sulfide Submicrometer Hollow Spheres


  • This work was supported by the National Natural Science Foundation of China and Open Foundation of Structural Research Laboratory of USTC. We gratefully acknowledge help from Prof. Shunyuan Zhang with EDX spectroscopy and HRTEM measurements.


Nickel sulfide uniform hollow spheres (see scanning electron microscopy image, Figure) have been successfully synthesized by γ-irradiation of a PMMA–CS2–ethanol aqueous solution that contains NiSO4·6H2O at room temperature. Calculation shows that the diameter of the NiS hollow spheres is 500 nm and the thickness of shell is ∼ 20 nm. A possible growth mechanism is also presented.

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