What type composite would like to prepared? Is it CuO nanoparticles dispersed in PANI matrix, a blend of CuO/PANI or hybrid core-shell composite particles?

first one . .CuO nps dispersed in PAni matrix. Please consider that I have made them separately.

have a look at ultrasound irradiation methods if you've already made separate synthesis. 

Thanks for your suggestion. can you provide me any paper?

If you make the nps and PANI separately, I would suggest you (1) dissolve the PANI in an appropriate solvent. (2) Add the amount of nps that as required (3) use a homogenizer e.g Silverson (4) Use a stainless beaker. A large amount of heat is likely to be generated. The beaker should be chilled. (5) Allow the solvent to evaporate  

thanks  . .I'l try this method. can you provide me any paper based on this process?