Abstract
The seed particle growth technique was developed to achieve the mono-dispersed large silica particles (about 2 m) by controlling the particle growth and primary particle nucleation processes in sol-precipitation. Using the salt additive of KCl, the mono-modal distribution of particles could be achieved because KCl enhanced the seed particle growth by charge neutralization and impressed the secondary particle formation. At KCl concentration of 10−2 mol/l, the seed particles were monotonically enlarged without a secondary particle formation, as increasing the TEOS concentration to 0.2 mol/l. Further increasing the TEOS concentration resulted in the bi-modal distribution of the product particles due to the secondary particle formation. Also, the amount of seed particles influenced on the particle size and distribution because the particle growth rate and the secondary particle formation were changed. In addition, it was observed that the mono-modal particles of about 2000 nm were produced by multi step growth technique of the seed particles.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.