• In the present era, Copper is an essential trace micronutrient and dietary mineral which assists in certain metabolic functions for the life sustenance of the human beings & other living organism.
• Further, copper is one of the most utilized metal elements in the world in electrical units as wires & motors, agricultural poison, architectural materials, corrosion-resistant coating for marine environments etc.
• Moreover, Zinc Oxide (ZnO) is a well-known semiconductor material that is widely used in optical and electrical equipments.
• Based on prior arts patent literature survey, it is noted that copper-zinc oxide (Cu/ZnO) composites have superior antibacterial action than the pure components, i.e. copper & zinc oxide, the prior art of preparation of Cu-ZnO material is laborious, time-consuming, expensive.
• Hence, there is a need to address the issues in efficient manner.

Present invention describes a method of preparing metallic Cu-ZnO nanocomposite with high antibacterial activity by low temperature solid-state reactions of Cu and zinc acetate combinations. (Refer FIG.1)

The method comprising the steps of:

1. metal acetate precursor namely copper acetate monohydrate and zinc acetate
2. dihydrate are taken in equal proportion by weight from 0.1 gram to 1.0 gram
3. The salt mixture of (a) taken in equal proportion by weight is grounded to get a homogeneous phase
4. the homogeneous mixture of (b) is taken in a silica crucible and is placed in a muffle furnace without closing the crucible
5. washing the product with distilled water 3 to 4 times with occasional
6. ultrasonication and centrifuged
7. washing the centrifuged product with ethanol 2 to 3 times with occasional ultrasonication and dried at 60 degree centigrade to remove any ethanol present
8. Further, the copper remains metallic in the prepared nanocomposite.