Revista de Nanomedicina y Nanotecnología

Abstracto

Nano-Metal Borides of Cobalt, Nickel and Copper

Al-Zain Omar Ali, Al-Masoudi and Reem Soliyman

The magnesiothermic reaction of CoO, NiO with B₂O₃ and Mg yielded only Co₃O₄, NiO. Similarly, direct reaction of CoO, NiO with elemental boron yielded CoB₂O₄ and NiO respectively. The reaction of CoCl₂, NiCl₂ with elemental boron yielded Co₂B, NiO respectively. On the other hand direct reaction of pure Co, Cu metal with elemental boron in 1:1, 1:2 and 1:3 ratios produced metal oxides except 1:3 ratio produced was CoB and Cu(BO₂)₂. So, Solid phase with metal oxides and chlorides ended with metal oxides except with cobalt oxide and elemental Boron where CoB₂O₄ was produced. Reacting pure metals and elemental boron produced nano-metal borides for Co, Ni and Cu. The liquid phase reaction of CoCl₂, NiCl₂ and CuCl₂ with sodium borohydride, NaBH₄, produced black nanocrystals and nanorods of CoB₂O₄, Ni₄B₃, CuB₂₄ and CuO.