Hello,
So I have conducted an experiment looking at the size of silica nanoparticles. However, the results I obtained showed that at a lower mass concentration of SiO2, the volume and radius of individual particles are greater than that of higher SiO2 mass concentration.
I can't seem to find an explanation regarding this and was thinking that at lower mass concentration the individual particles colliding somehow caused them to agglomerate together causing the bigger particle size.
Loh J. J.
Aggregation (not agglomeration) is a given in dry nanosystems or those that are not sterically or charge stabilized in colloidal suspension. Some stuff:
- Dispersion and nanotechnology https://tinyurl.com/y2wfzed7
- Adhesion and cohesion http://tinyurl.com/zwb2wlh
Rudy Rucker: 'I think dry nanotechnology is probably a dead-end'
It may be due to aggregation, use stabilizing agents to reduce aggregation.
I think there is instability in charge
Check this with the Zeta potential device
I guess this will all depend on both the dispersive liquid (if any) and the surface treatment of your silica nano-particles, none of which you said anything about. Alan's statement sums it up.
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