Chemistry

[Ayat]

Hello, I am a physics student, i want to make thin film of Cu₂O via solution process method of dip coating, but i dont know how to make the solution, read many papers i have copper ii sulfate pentahydrate, NaOH, Gulocose, and lactic acid, please guide me with proper way so that i make a solution of Cu₂O, thanks

[ChenBeier]

You cannot make Cu₂O solution, because it is not soluble. If you create it, it will precipitate imidiatelly.
Probably can make nano particles or spray version.
Maybe Fehling solution could be used.

https://en.m.wikipedia.org/wiki/Fehling%27s_solution

Your solution can be made dissolve coppersulfat and lactic acid. If this is dissolved add sodium hydroxide until the precipitate gives a blue violet clear solution.
Then you add the glucose and heat the solution until it changes to red brown.

[Ayat]

Thank you so much, I tried using copper sulfate pentahydrate, glucose, and sodium hydroxide, the color was red-brown exactly as Cu₂O has but there was precipitation,
then my supervisor told me to use the electrodeposition method, I tried Copper sulfate pentahydrate with NaOH and lactic acid, the color was blue-violet but i did not add any glucose and left as it as, because i am very disappointed from the supervisor behavior he is not even cooperating with me, he told me do what you can, i don't know its your work you have to do it.

[ChenBeier]

You cannot deposit copperoxide by electrolysis. This is only possible with copper itself.