Can any body tell me how can i disperse Fe3o4@sio2 in water?

I synthesize Fe3o4 nanoparticles and then i modified it by Sio2, how can i make stable dispersion of this coreshell (Fe3o4@Sio2) in water? should i use any surfactant?or should i functionalized it...

15 December 2016 7,591 2 View