Environmental applications

Collaboration: M.P. Krafft, G. Waton Charles Sadron Institute

Nanoparticle-decorated microbubbles have been stabilized on long periods of time using a synergism between a soluble surfactant and nanoparticles. The soluble surfactant is the perfluoroalkyl phosphate C8F17(CH2)2OP(O)(OH)2 (labeled F8H2Phos), and the nanoparticles (NPs) are 20-25 nm cobalt ferrite (CoFe2O4).

The bubbles align in a magnetic field.

PhD thesis : A. Kovalenko Université de Strasbourg November 6th 2013 Stabilisation de microbulles de gaz par des tensioactifs semi-fluorés et des nanoparticules d’oxyde de fer.

Publications :

  • Compressible multi-scale magnetic constructs: decorating the outer surface of self-assembled microbubbles with iron oxide nanoparticles Nguyen P. N., Nikolova G., Polavarapu P., Waton G., Phuoc L. T., Pourroy G., Krafft M. P. RSC Advances (2013), 3(21), 7743-7746
  • Hollow magnetic microspheres obtained by nanoparticle adsorption on surfactant stabilized microbubbles A. Kovalenko, J. Jouhannaud, P. Polavarapu1, M. P. Krafft, G. Waton, G. Pourroy SoftMatter 2014, 10 ,5147–5156