I have tried various protocol but no satisfactory results obtained,some time on addition of reducing agent into precursor -capping agent mixture black colour appears but precipitation stucked on stirring bar and walls of breaker , while some time no colour appears even stirring several hours,I want know that where is the problem,is any one tell me what I should do ?and what actually be the changes that shows presence of perfect nanoparticles in my system regarding colour changes that confirm nanoparticles are prepared in the nano ranges. Is further stirring required ? Temperature required? What would be the exact situations or changes while adding reducing agent ? particular colour appears or not ?or will it remain colorless and give colour specific to Ni NPs after stirring 12 ,24 or 48 hrs ? please suggest me.
Thanks to all in advance
Dear Muhammad Imran Khattak :
We also were not able to synthesize nickel nanoparticles. It was necessary to synthesize a hybrid nickel/ platinum (2.5%). See our work
Russian Journal of Physical Chemistry 82(3):385-389 · March 2008
Best regards
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