What is the black precipitate in Ni Nanoparticle Synthesis?

Hello, I am creating Nickel nanoparticles and I am always creating a black precipitate. I either use NiCl2/NiSO4 with citrate or PEG in water/Ethanol. My reducing agent is NaBH4. No matter what...

08 March 2021 2,832 8 View