Abstract
Nickel nanoparticles (<10 nm) were successfully synthesized using a reductive method of nickel chloride with sodium borohydride in the ethanol/polyvinylpyrrolidone (PVP) system. The effects of three factors, such as the concentration of the nickel ions, the time of reaction, and the amount of PVP (surfactant), were discussed. The possible growth process of the particles and optimum reactive conditions was also investigated. The result of transmission electron microscopy (TEM) reveals that these nickel nanoparticles are spherical. The average diameter could be controlled as 2–5 nm under selected conditions. High-resolution TEM and energy-dispersive spectroscopy results indicates that the nickel nanoparticles are pure. The UV–visible light absorption spectrum shows that the peaks of nickel nanoparticles moves toward the short wavelength along with the decrease of sizes.
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Acknowledgments
The work was financially supported by the National Natural Science Foundation of China (Nos. 51272025 and 50872011), the National Key Basic Research Development Plan (973 Program) (No. 2007CB613608), and the New Century Excellent Researcher Award Program from Ministry of Education of China (No. NCET-08-0732).
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Guo, X., Zheng, F., Guo, M. et al. Preparation and UV property of size-controlled monodisperse nickel nanoparticles (<10 nm) by reductive method. Rare Met. 32, 179–185 (2013). https://doi.org/10.1007/s12598-013-0042-0
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DOI: https://doi.org/10.1007/s12598-013-0042-0