I prepared Zinc Oxide following a protocol to get size larger than 100 nm , using 1M zinc acetate and 1M sodium hydroxide at 30 degree, but I got 5 nm particles , why ?
Dear Amr
The only thing I can think of is that, in the protocol you are using the authors probably got ZnO NPs with smaller sizes but after a while these NPs have agriggated and larger sizes are obtained.
How do you measure the particle size?
One more thing, please describe the method or paper you follow to get more helpful advice.
@Amr Mahmoud, The experimental condition may not be described in full details such as whether magnetic stirring was used or not and also ambient environment. This could be a key. You could try to test in modified way to achieve what you want. I am sure you will succeed.
Dear Amr,
I think this table might help you. Despite it is on Copper Nanoparticles but I think the idea is the same that synthesis temperature and broth concentration are factors affecting the Average particle size. Try to alter the method by changing the synthesis temperature and broth concentration and I hope you get the size you need.
The table is from this paper check it out.
Lee, H. J., Lee, G., Jang, N. R., Yun, J. H., Song, J. Y., & Kim, B. S. (2011). Biological synthesis of copper nanoparticles using plant extract. Nanotechnology, 1(1), 371-374.
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