Synthesis of Co Filled Carbon Nanotubes by In Situ Reduction of CoCl2 Filled Nanotubes by NaBH4

<table>Illustrations showing the (1) filling of CoCl2 inside the nanotubes, (<a href="https://static.hindawi.com/articles/isrn/volume-2013/732974/figures/#EEq2">2</a>) conversion of CoCl2 into Co inside the nanotubes by NaBH4.</table>

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Figure 4

Figure 4: Synthesis of Co Filled Carbon Nanotubes by In Situ Reduction of CoCl2 Filled Nanotubes by NaBH4