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We have demonstrated a simple, scalable, and tunable method of obtaining densely packed Ni Nanoparticles encapsulated in Carbon Nanocages (Ni@CNCs). Using a facile method, it was shown that via a simple annealing process of precursor based on nickel acetate and citric acid, Ni@CNCs with sizes varying from 5 to 20 nm can be synthesized by changing the heating ramp rate during the synthesis from 25 to 53 °C/min. The final temperature of 600 °C was held for 10 min, and was the same for all the samples. X-Ray Diffraction (XRD) multiple peaks analysis was performed to show large Ni nanoparticles (NPs) peak growing with increasing heating ramp rate. The samples were also characterized with Transmission Electron Microscopy (TEM), and Scanning Electron Microscopy (SEM) to investigate Ni@CNCs structural properties.

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nanocages, nanoparticles, ramp, synthesis, characterization, physics


Condensed Matter Physics

Size-controlled Synthesis of Nickel Nanoparticles Enclosed in Carbon Nanocages