In plant extract based synthesis of ZnO nanoparticles, does extract alone reduce the precursor (Zn salts) to ZnO NP or NaOH based pH control required?

01 January 2018 1 10K Report

Literature suggests the reaction of Zn salts with plant extract alone can yield ZnO NPs. Many of the literatures also mentions the addition of NaOH to the solution to maintain pH around 12 for formation of white precipitate resulting in NPs. I could not obtain ZnO NP unless I added NaOH solution. Reaction between Zn salts and NaOH can alone give ZnO NP. Then what is the role of plant extract if NaOH needs to be added?

P.E. Kumar

All plant extracts not reduces you must select suitable plant extract to reduce zn salts to Kno.for this you go through previous literature if any

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