I am following Sun et.al's well known procedure. There are times when I get a mix of this colloidal sticky emulsion (as I call it) and proper precipitated MNPs, but sometimes all I get is the sticky emulsion. What am I doing wrong?
Thank you for the reply. I have removed all water from the mixture. Plus the reaction peaks to 298C. So water is lost by then. I wonder if it has something to do with less reducing agent and more surfactant.
Hemant Motiram Vishwasrao
If you perform decomposition of the complex in diphenyl ether, then your problem is not. 5 nm nanoparticles are formed.
Roca A.G., Morales M.P., Serna C.J. Synthesis of Monodispersed Magnetite Particles From Different Organometallic Precursors // IEEE Trans. Magn., V. 42. P. 3025 – 3029
Hence your problems arise from alcohol. The complex is chiral. It has in solution two optical isomers and a racemic mixture. Together with adsorption on nanoparticles during decomposition, it forms
complex mixture with high viscosity.
- Badges
- Science topic
- Similar topics
- Chemistry
- Nanotechnology