I have synthesized a material using sol-gel synthesis method adding PVA as surfactant. i observed that particle size has increased compared to sample prepared without addition of PVA. kindly give explanation what could have cause such result in increase in the particle size.
You'll need to provide a lot more information about the particles you are making in order to attempt to answer.
Dear Ranjan Rai,
you can read this article I hope will be very helpful
Article The Effects and Role of Polyvinylpyrrolidone on the Size and...
Dear Ranjan Rai
There is a complete information regarding your quries in the article “The evolution of ‘sol–gel’ chemistry as a technique for materials synthesis”. The term ‘sol–gel’ is now used for a diverse range of chemistries. In fact, it is perhaps better defined more broadly as covering the synthesis of solid materials such as metal oxides from solution-state precursors. These can include metal alkoxides that crosslink to form metal–oxane gels, but also metal ion–chelate complexes or organic polymer gels containing metal species. What is important across all of these examples is how the choice of precursor can have a significant impact on the structure and composition of the solid product.
https://pubs.rsc.org/en/content/articlehtml/2016/mh/c5mh00260e
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