| abstract |
The present invention is in the field of synthesis of nanoparticles. It relates in particular to manufacturing processes for nanoparticles with a lattice consisting essentially of Z sulfate (Z = magnesium (Mg), calcium (Ca), strontium (Sr), barium (Ba) or binary mixtures thereof), in which the nanoparticles are characterized by crystal growth a Z ion source and a sulfate ion source can be synthesized in a liquid phase synthesis mixture. In order to easily produce barium sulfate nanoparticles with a significantly smaller average particle diameter, the particles being supposed to be homogeneously dispersible in water or other solvents, it is proposed to use coordinating solvents such as glycerol, ethylene glycol and other polyethylene glycols, polyalcohols or dimethyl sulfoxide (DMSO) in the synthesis mixture , For this purpose, the barium is preferably presented as chloride and the sulfate source preferably as tetrabutylammonium hydrogen sulfate. Further metal dopants which can optionally be incorporated into the lattice of the nanoparticles during synthesis are also preferably used as chlorides. |