| CPC B01J 23/835 (2013.01) [B01J 23/75 (2013.01); B01J 35/19 (2024.01); B01J 35/393 (2024.01); B01J 35/45 (2024.01); B01J 35/51 (2024.01); B01J 35/55 (2024.01); B01J 37/04 (2013.01); B01J 37/08 (2013.01); B01J 37/12 (2013.01)] | 20 Claims |

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1. A PbO/Co3O4/MgO nanocomposite material comprising:
an orthorhombic PbO crystalline phase;
a cubic Co3O4 crystalline phase; and
a cubic MgO crystalline phase,
wherein an average crystallite size of the PbO/Co3O4/MgO nanocomposite material is in a range from 75 to 90 nm.
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