27 November 2018 8 8K Report

Good day everyone. I used onion peel extract as the reducing agent to produce Chromium nanoparticles(precursor 1mM ofCrCl3 solution). 10ml of onion peel extract was added drop wise into the 100ml of chromium chloride solution. Changing of color for the solution was observed clearly. The problem is when send it to the SEM analysis, the particles size are between 300nm to 400nm, which out of range to be nanoparticles. Can I know what procedures that I could improve so that I can get within 1 to 100nm for the particle size? Other than the size, the particles are well poly dispersed with spherical shape.

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