Copper nanoparticle dispersions are of great interest due to its potential applications in a wide variety of areas including electronic and optoelectronic devices, such as microelectromechanical systems, field-effect transistors, electrochemical cells, gas sensors, magnetic storage media, solar cells, field emitters, and nanodevices for catalysis.

Copper nanoparticles dispersion: Water pollution due to organic wastage from industrial production has become a serious problem in the world today. Most of the organic compounds in wastewater are toxic and cannot be decomposed naturally so they need to be treated with care before disposal. Cu is a promising candidate due to low cost and abundance As a p-type semiconductor of narrow bandgap in the visible region, Cu is expected to be a good material for application in photocatalyst and solar energy conversion.

Cupric oxide (CuO) has been studied as a p-type semiconductor material with a narrow bandgap because of the natural abundance of its starting material, low-cost production processing, nontoxic nature, and its reasonably good electrical and optical properties.

Copper nanoparticle dispersion has other unique magnetic and superhydrophobic properties. These nanostructures show very promising applications in heterogeneous catalysis in the complete conversion of hydrocarbons into carbon dioxide, enhancement of thermal conductivity of nanofluids, monoenergetic materials, and super-hydrophobic surfaces or anode materials for lithium-ion batteries.

Copper nanoparticle dispersions have unique optical and semiconductor properties allowing the application of copper oxide nanoparticles in many industrial applications. Controlling the size and morphology of the nanoparticles enables the tunability of these properties. The major methods of synthesizing copper oxide nanoparticles dispersions involve one phase in either a batch or a continuous flow reactor.